ATOTO

CarWave CB4 Series

Car Smart Box

CarWave CB4 Series User Manual

For SKUs below:

(1)  CB4A, CB4B

(2)  CB4CT, CB4DT

*The CB4 Series belongs to the CarWave AI Box family of adapters.

Preface

Thank you for choosing ATOTO

As an innovative brand with a decade of dedicated expertise in automotive electronics, ATOTO upholds the core philosophy of "Different. Better. Trusted". We seamlessly integrate professional audio-visual technology and user-friendly interactive features to elevate every journey with refreshing experiences.

Copyright Statement

The copyright and related intellectual property rights of ATOTO brand CarWave Wireless Car Smart Box product manuals (including electronic and printed versions) are exclusively owned by ATOTO. Without explicit written authorization from ATOTO, no organization or individual may use the content in any form (including but not limited to copying, distributing, adapting, translating, mirroring, or reposting) for commercial purposes or provide it to third parties.

Permitted Use Scope:

These manuals are provided exclusively for reference by users who have purchased genuine ATOTO CarWave Wireless Car Smart Box products. Users may view, store, or print the content for personal and reasonable needs, but must not remove or alter copyright notices, statements, or product information. The content shall not be used for technical support, promotion, training, or third-party service scenarios involving non-ATOTO products.

Liability Statement:

ATOTO reserves the right to pursue legal action against any party for legal disputes, financial losses, or damage to brand reputation caused by unauthorized use, reproduction, modification of the manual content, or infringement of ATOTO's copyright. For cooperation authorization, content citation, or technical inquiries, please contact ATOTO through official channels (Customer Service Email: Email: support@atotoglobal.com).

FCC Compliance Statement:

The FCC Compliance Statement is an official declaration by ATOTO to users indicating that the product complies with the radio frequency interference and electromagnetic compatibility (EMC) regulations of the U.S. Federal Communications Commission (FCC). The specific statement is as follows:

This device strictly complies with all provisions of Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

1.This device must not cause harmful interference;

2.This device must accept any interference received, including interference that may cause undesired operation.

Contact ATOTO Customer Support

If you encounter any issues during installation or use, our support team is ready to assist.

Email: support@atotoglobal.com

Chapter 1 Important Information

1.  About this Manual

To ensure proper use of your CarWave Wireless Car Smart Box, please read this user manual carefully and fully understand its contents before operation.

1） Interface Differences

The screenshots shown in this manual may differ slightly from the actual interface of your CarWave Wireless Car Smart Box. This is because the system is continuously optimized and enhanced through OTA updates.

2）System Updates

ATOTO may release new system updates from time to time. These updates may include modifications or newly added features that are not described in this manual.

3）Additional Assistance

This manual may not cover all possible questions or scenarios. If you encounter any issues or have questions that are not addressed here, please contact ATOTO Customer Support for further assistance.

2.  Operation Warnings

1. Place the box on a flat and stable surface. Avoid positioning it where it may fall or obstruct driving visibility.
2. Ensure proper ventilation. Do not place the box in enclosed spaces such as glove compartments or armrests. Proper airflow helps prevent overheating.
3. Do not disassemble, pierce, or short-circuit the device. Any unauthorized modification may result in damage or fire hazards.
4. Keep the device away from liquids. Avoid contact with water or other fluids to prevent short circuits and corrosion.
5. Do not operate the box with wet hands. Using the device with wet or sweaty fingers may cause moisture to enter the unit, leading to malfunction or electric damage.
6. If you notice smoke, odor, or excessive heat during use, immediately disconnect the USB cable and contact customer support.

3.  Important Notice

Apple CarPlay is a trademark of Apple Inc.

· iPhone® is a trademark of Apple Inc., registered in the U.S. and other countries.

· Use of the Apple CarPlay logo means that this user interface meets Apple performance standards.

· Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards.

· ATOTO are not affiliated with Apple Inc.

Android Auto is a trademark of Google LLC.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by ATOTO are under license.Other trademarks and trade names are those of their respective owners.

Chapter 2 Product Overview

For SKUs below:

2.1 What Comes in the Box

2.2 Product Appearance

2.2.1 CB4A / CB4B

① USB-C Port

Connect to the car's USB port using the supplied USB-C cable to enable both power in and communication.

② TF Card Slot

Insert a TF card to expand local storage for offline music and video playback.

③ CP/AA Switch Pinhole

Use an ejector pin to press and hold for 5 seconds, release, then quickly press once again. to manually switch between CP and AA modes.

Green = CP | Blue = AA

This switch matches the connection mode of your car's original system, not the phone type:

● If your car's original system supports only wired CarPlay, set the CB4 to CP mode (default).

● If your car's original system supports only wired Android Auto, switch the CB4 to AA mode using the pinhole.

● If your car supports both wired CarPlay and Android Auto, either mode can be used to connect the CB4 to the head unit.

2.2.2 CB4CT/ CB4DT

① USB-C Port

Connect to the car's USB port using the supplied USB-C cable to enable both power in and communication.

② CP/AA Switch Pinhole

Use an ejector pin to press and hold for about 2 seconds to manually switch between CarPlay (CP) and Android Auto (AA) modes. Green for CarPlay and blue for Android Auto.

This switch is used to match the connection mode supported by your original vehicle system, not the phone type:

● If your car's original system supports only wired CarPlay, set the CB4 to CP mode (default).

● If your car's original system supports only wired Android Auto, switch the CB4 to AA mode using the pinhole.

● If your car supports both wired CarPlay and Android Auto, either mode can be used to connect the CB4 to the head unit.

③ USB-A Port

Used for connecting external storage devices (such as USB flash drives) to store and access media files.

④ HDMI OUT Port

Outputs video/audio to external displays such as sunvisor/headrest/rear screen.

2.3 Before installation

Before installation, please make sure your vehicle or head unit is compatible with the CB4.

1. Compatibility Requirement:

The CB4 is compatible with car stereos that support wired CarPlay or wired Android Auto (at least one wired connection is required).

Note: If your car stereo meets the above requirements but the connection still fails, please contact ATOTO Customer Support for assistance.

1. Power Supply Requirement:

For stable operation, the CB4 requires a stable power supply of 5V / 1A.

If the vehicle’s USB port cannot provide sufficient and stable power, please use the provided Y-shaped power cable to connect to an additional power source.

1. Control Requirement:

Your car stereo must also meet at least one of the following conditions:

① The stereo supports direct on-screen touch control.

② If it does not, the stereo must have a touchpad or remote control for navigation.

Reason:

The CB4's built-in Android 12 system relies on touch input for operation. Without a touchscreen, touchpad, or equivalent input device, users will be unable to operate apps, access menus, or control system settings effectively.

1. Compatibility Limitation:

The CB4 is compatible with vehicles whose OEM systems support wired CarPlay or wired Android Auto.

❌ Not compatible with:
BMW vehicles
Most Subaru vehicles
Vehicle’s systems that support wireless CarPlay or wireless Android Auto only

⚠ Aftermarket head units:
Compatibility may vary. Some aftermarket head units may work if their CarPlay / Android Auto interface follows Apple’s or Google’s official specifications and hardware requirements.

2.4 Installation Process

Before starting the installation, please read the instructions carefully and follow each step as described.

Important Notice:

If you are unable to complete the installation successfully after following the instructions in this chapter, please contact ATOTO Customer Support immediately. Our support team will provide personalized assistance, including a step-by-step installation guidance video, to help you complete the setup correctly.

2.4.1 Wiring Connection Instructions

Method 1: Standard Connection

Use the appropriate USB cable (Included) to connect the CB4 to the car stereo based on your car’s CarPlay/Android Auto port type:

Important:

To ensure stable power supply and reliable operation, it is strongly recommended to use the provided Y-shaped power cable.

This is especially important for vehicles with insufficient USB power output, such as some 2016–2020 Nissan, Isuzu, Toyota Camry, 2023 Toyota Crown, 2023 Lexus NX, and Volkswagen models.

Please proceed to Method 2 or Method 3 and connect the device using the Y-shaped cable to provide additional power.

Method 2: Enhanced Power from Cigarette Lighter via Y-Cable 

(For car stereos with a USB A port)

1. Plug the USB A-C Cable into the CB4.
2. Connect it to the Y-shaped Cable.

1. Connect the Y-shaped cable to the cigarette lighter and the car stereo for power.

Method 3: Enhanced Power from Cigarette Lighter via Y-Shaped Cable

(For car stereos with a USB-C port)

Follow steps 1-3 from Method 2.

1. Connect the Y-shaped cable to the USB-C adapter.
2. Connect the USB-C adapter to the car stereo.

Note: The cigarette lighter power adapter is not included in the CB4 package.

Avoid placing it in closed spaces like glove boxes or armrests.

Insert the SD Card

(Applicable Models: CB4A / CB4B models equipped with a SD card slot.)

Insert a MicroSD card into the SD card slot.
Refer to the diagram below to ensure the correct card orientation.

Gently push the card inward until you feel a slight click or spring-back response, indicating it is securely locked in place.

【AI图解：This diagram shows the correct orientation for inserting the MicroSD card】

Note: Inserting the SD card incorrectly may cause damage to the card or device and 

may void the warranty.

2.4.2 Accessing the Android 12 System of CB4

Step 1: Check Your Car's Wired System

First, determine which wired system your car supports: CarPlay or Android Auto, as the AI Box operating mode depends on your factory system.

CP / AA Mode Guide:

● Wired CarPlay only → Set CB4 to CP mode (Initial Default Mode)

● Wired Android Auto only → Switch CB4 to AA mode

● Supports both → Either mode can be used

Step 2: Manual Mode Switching (If Needed)

Use an ejector pin:

1. Press and hold the CP/AA switch pinhole for 2~5 seconds.

2. Release, then quickly press once again.

3. The indicator light will change to confirm the selected mode.

Indicator Lights

Step 3: System Loaded

Once the correct mode is set and the CB4 is powered on, tap CarPlay, Android Auto, or a similar CarLink icon on the factory head unit to enter the system.

Initial Setup Wizard

When the AI Box is powered on for the first time, the Setup Wizard will guide you through several basic settings.

Follow the on-screen instructions to complete the initial configuration.

① Select Language

Choose your preferred system language and tap Next Step to continue.

 ② Set Time and Units

Configure the following settings according to your preference:

• Time Format
• Date Format
• Temperature Unit
• Speed Unit

After completing the settings, tap Continue.

③ Connect to Wi-Fi

Connect to the Wi-Fi to Activate the System

Steps

1. Turn on WLAN.
2. Select an available Wi-Fi network.
3. Enter the password if required.
4. Once connected successfully, tap Continue.

④ Sign In to SSHub

Signing in to SSHub enables access to additional services and device management features.

Steps

1. Download and install the SSHub app.

1. Register for an account or sign in.
2. Open the SSHub app and scan the QR code displayed on the AI Box screen to complete the login.

⑤ Pair Your Phone via Bluetooth

To enable wireless CarPlay / Android Auto and Bluetooth calling, pair your phone with the AI Box.

Steps

1. Enable Bluetooth on your phone.
2. Search for the Bluetooth device name displayed on the screen (for example, CB4-D886) and complete the pairing process.
3. After Bluetooth pairing is successful, the system will automatically switch to the Wireless CarPlay or Android Auto setup page.

(*If it does not switch automatically, you can open the “ CarPlay” or “Android Auto” app later when the AI Box is connected to the internet to activate Wireless CarPlay / Android Auto.)

1. Follow the on-screen prompts of your phone to complete the setup.

Chapter 3 Basic Features

3.1 First-time Setup

3.1.1 How to Set the Date and Time

1)  Go to Settings > Date and Time.

2)  Enable Automatic date & time.

The date and time will be updated automatically after connecting to the Internet.

3)  Select your preferred time format.

● Use locale default

or

● Use 24-hour format

3.1.2 Language Setting

Set a Preferred Language for your system. Tap Settings > Language.

If you can’t find your language on the “Languages” page, scroll to the bottom and tap “+ Add a language” to add it.

When many languages are added to the Preferred Language, you just need to simply swipe up the most preferred one to the top to switch the system language.

3.2 Home Page

Upon powering up your CB4 system, familiarize yourself with the icons and menus to quickly access the features you need for an enhanced driving experience.

3.3 Floating Button

After startup, the floating button will automatically appear on the home screen.

【AI图解：This image shows the floating button. The floating button icons, from left to right, are labeled ①–⑤】

① Home icon (house): Taps return to the home screen.

② Back arrow (curved left arrow): Taps return to previous page.

③ Microphone (voice input): Activates the voice assistant.

④ Rocket (launch / boost): Tap to clear cache.

⑤ Car (vehicle): Tap to exit CB4's system.

3.4 Bluetooth Connection

The CB4 is equipped with two independent Bluetooth modules, designed to enhance connectivity and multitasking performance. Each module serves a distinct purpose:

Bluetooth 1 — Handles CarPlay / Android Auto (CP/AA) connection, hands-free calling, and Bluetooth music streaming, and Bluetooth screen lock integration.

Bluetooth 2 (SoC Bluetooth) — Used for BLE accessories.

3.4.1 Bluetooth Setting

You can access the Bluetooth settings through Settings, BT Music, or BT Phone.

【AI图解：This image shows the Bluetooth settings interface, which appears after tapping the Settings (gear) icon in the left-side menu.】

3.4.2 Bluetooth Connect

1.  Enable Bluetooth on both your smartphone and the CB4.

2.  On your phone, search for “CB4_XXXX” and tap to pair.

3.  On the Bluetooth Connection interface, the connected device will be displayed

【AI图解：The screen shown after tapping the “Bluetooth Connection” icon in the left menu. In the top-right corner, you’ll see three icons, labeled ①, ②, and ③ from left to right.】

① Tap to connect or disconnect the selected device.

② Tap to search for available devices.

③ Tap to forget/delete the selected device.

Note:

● CarPlay/Android Auto can only be used with one device at a time.

● To use a different phone, disconnect the current device, then pair/connect the new device.

● When Auto Connect is enabled, the CB4 will automatically connect to the most recently paired/used device at startup.

To ensure auto connection:

1.Keep Bluetooth and Wi-Fi enabled on your iPhone or Android phone.

2.Do not remove “CB4” from your phone’s Bluetooth device list.

3.5 Network

The CB4 supports internet access via Wi-Fi, including connections to external Wi-Fi networks or mobile hotspots.

[It features a dual Wi-Fi design:

One Wi-Fi connection is dedicated to wireless CarPlay / Android Auto

The other Wi-Fi connection is used for internet access]

Operation Steps：

1)  Prepare a Wi-Fi Network or Hotspot

Ensure Wi-Fi network or mobile hotspot (from a smartphone, portable router, etc.) is active.

2)  Enable Wi-Fi on CB4

Go to Settings >WIFI> Internet, then turn on Wi-Fi.

3)  Connect to a Network

Tap the desired Wi-Fi network name (SSID) from the list.

If prompted, enter the Wi-Fi password and tap Connect.

3.6 Screen Lock

The default passcode is "0123".

The screen lock feature is designed to protect your CB4 from unauthorized access and supports two locking methods: passcode and Bluetooth.

Main Purposes:

1.  Prevent others from operating your car system without permission.

2.  Protect personal data, such as navigation history, account information, and app settings.

Screen Lock Methods

Method 1: Bluetooth Lock

When enabled in Screen Lock Settings, the CB4 can automatically unlock the screen when a paired Bluetooth device (such as your smartphone) is nearby, and lock it when the device moves out of range.

Quick Setup

1)  Ensure your smartphone is connected to the device via Bluetooth.

2)  Open the BT Lock app.

3)  Inside the app, tap the top‑right icon (keyboard icon) to view phones that are currently connected to the device's Bluetooth.

4)  Tap the target phone to enable Bluetooth unlocking for that device.

Notes:

● When the selected phone connects via Bluetooth, the screen will unlock automatically within 1–2 seconds.

● You may add multiple phones for Bluetooth unlocking.

To change the unlock password, following the on‑screen prompts to set a new code.

Method 2: Passcode Lock

1)  Open the BT Lock app.

2)  Inside the app, tap the lock icon at the bottom-right corner to lock the screen.

3)  Enter the set passcode to unlock the CB4 system.

Note: If you forget the passcode, tap the Clear key five times. When the confirmation prompt appears, tap Continue to confirm.

The system will then automatically reset to factory settings.

3.7 Bootup App Setup

You can set apps to launch automatically when the CB4 powers on.

Setup Path:

Settings → Other → Bootup App

Note: Only apps listed in the Bootup App menu can be configured for auto-start.

To disable auto-start:

1. Scroll to the bottom of the list.
2. Select “None”

Chapter 4 Wireless CarPlay/Android Auto Setup

CarPlay / Android Auto App is a pre-installed smartphone connectivity application in the CB4, enabling wireless connection between iPhone / Android smartphones and the CB4, allowing users to mirror essential smartphone functions—such as navigation, phone calls, music playback, and voice assistants and more onto the car head unit's display, greatly enhancing driving safety, and operational convenience.

4.1 Compatibility

4.1.1 Phone

Wireless CarPlay is available on iPhone 5 and later models with iOS 9.0 and higher.

Wireless Android Auto is compatible with these Android versions:

1.  Any phone with Android 11.0 and higher.

2.  A Google or Samsung phone with Android 10.0.

3.  A Samsung Galaxy S8, Galaxy S8+, or Note 8, with Android 9.0.

4.1.2 Car

Your vehicle must support wired CarPlay or wired Android Auto, as the AI Box operating

mode depends on the factory system.

Not compatible with:

❌ BMW vehicles

❌ Most Subaru vehicles

❌ Vehicle’s systems that support wireless CarPlay or wireless Android Auto only

⚠ Aftermarket head units:

Compatibility may vary. Some aftermarket head units may work if their CarPlay / Android Auto interface follows Apple’s or Google’s official specifications and hardware requirements.

4.2 Wireless CarPlay

1)  Enable Bluetooth and Wi-Fi on both your phone and the CB4.

(Note: Before pairing, ensure the CB4 is not already connected to another phone via Bluetooth.)

2)  On your phone, search for and select "CB4_xxxx" from the available Bluetooth devices list.

3)  On the CB4's Android system, tap the "CarPlay" app to start the CarPlay connection.

4)  Follow the on-screen prompts on your phone to complete the pairing process.

"CarPlay" app

4.3 Wireless Android Auto

1)  Enable Bluetooth and Wi-Fi on both your phone and the CB4.

(Note: Before pairing, ensure the CB4 is not already connected to another phone via Bluetooth.)

2)  On your phone, search for and select "CB4_xxxx" from the available Bluetooth devices list.

3)  On the CB4's Android system, tap the "Android Auto" app to start the Android Auto connection.

4)  Follow the on-screen prompts on your phone to complete the pairing process.

"Android Auto" app

Note: The CP / AA switch pinhole is not related to wireless CarPlay or wireless 

Android Auto pairing. No adjustment is required during wireless connection.

*Android Auto Troubleshooting (Wireless Connection Issues)

If wireless Android Auto fails to connect, try the following steps:

1) Clear Google Play Services Cache/Data

Go to:

Settings → Apps → Google Play Services → Storage

Tap “Manage Storage” → “Clear All Data” and “Clear Cache.”

2) Clear Android Auto Cache/Data

Go to:

Settings → Apps → Android Auto → Storage.

Tap “Clear Cache” and “Clear Data.”

After completing the steps above, try reconnecting to Wireless Android Auto.

Tip:

You can enable “Wireless Auto-Connect” in Settings to automatically enter wireless connection mode.

When enabled, the CB4 will detect your paired smartphone at startup and automatically launch Wireless CarPlay/Android Auto—no manual action required.

4.4 Exiting CarPlay / Android Auto

To return to the CB4's Android system, tap the "Car" app on the screen.

To re-enter CarPlay or Android Auto, tap the "CarPlay" or "Android Auto" app again.

"Car" app icon

Chapter 5 HDMI-OUT

Applicable Models: CB4CT / CB4DT models equipped with a mini HDMI port

(CB4A / CB4B models not supported)

The CB4 supports HDMI output via a mini HDMI port, allowing the main head unit’s screen to be displayed on an external screen, such as a co-pilot display or rear-seat monitor.

Features:

● Mirror Display (Mirror Mode): Outputs the same content as the main screen.

Chapter 6 App Management

6.1 FindApps — Exclusive App Store

FindApps is an app store designed specifically for compatible Android-based in-car systems, offering a curated selection of applications to enhance the in-car experience.

How to Use FindApps

Navigation Path: Home Screen > APP Drawer > FindApps

Operation Steps:

1)  Open FindApps

Tap the FindApps icon to enter the app store interface.

2)  Install an App

Scroll through the app list to find your desired application.

Tap "Install" to complete the installation.

3)  Manage Apps

On the Manage page, scroll through your installed apps to update, uninstall, or configure an app as needed.

Select the desired action and follow the on-screen instructions.

6.2 DriveChat App — AI Voice Assistant

The CB4 comes pre-installed with the DriveChat application, an innovative AI voice assistant powered by SSHub and ChatGPT.

Key Features:

● Engage in AI conversations directly from your CB4.

● Control the CB4 via voice commands for hands-free operation.

● Interact with multiple AI chatbots. (Agentic AI Chatbots are under development)

Note:

● Optional Agentic AI Chatbots are under development and may not be available on all models.

● The types of AI chatbots available may vary depending on your device model. Please refer to the actual options on your CB4.

● You can enable or disable AI chatbots according to your preference.

6.2.1 Introduction to DriveChat & SSHub App

DriveChat Functionality:

● Supports voice-based Q&A and natural-language conversations.

● Enables voice control of CB4 functions (e.g., music playback, Volume adjustment).

● Interact with multiple AI chatbots, including optional Agentic AI Chatbots (still under development).

Note: DriveChat controls the CB4 software, not your car stereo system.

SSHub Companion App (Required):

To fully use DriveChat, you must download and use the SSHub app on your smartphone.

The app allows you to:

● Create and manage your SSHub account.

● Configure DriveChat settings.

● Sync settings between your phone and the CB4.

● Manage potential paid features or premium AI models for DriveChat (check within the SSHub app for details).

Potential Costs: Some advanced DriveChat features or specific AI models may require purchases, which are managed through the SSHub app.

6.2.2 Sign In to SSHub

1) Open the SSHub app, then create a new account or log in with a third-party account.

2)  Sign in to the SSHub app.

6.2.3 Access DriveChat App

1)  Open the DriveChat app to display a QR code.

2)  Open the SSHub app on your phone, tap “Scan Now”, and scan the QR code to bind the device.

3) Tap the DriveChat card to access and configure DriveChat features.

Note: Device binding is required to use DriveChat and other supported cloud services.

6.2.4 Wake Up DriveChat

Method 1: Tap the Voice Assistant button on your vehicle (commonly located on the steering wheel).

Method 2: Tap the Voice Assistant button on your car stereo's panel (if available).

Method 3: On the CB4 interface, tap the Microphone icon on the floating bar.

Method 4: Use the ATOTO Bluetooth Remote (AC-44F9, sold separately).

Note: CB4 does not support wake-up words.

6.2.5 Configure the Chatbot Settings

Before using the chatbot feature of DriveChat on the CB4, it is typically necessary to pair and configure it using the pre-installed DriveChat App on the CB4 and the SSHub App on your smartphone.

Preparation Requirements

Ensure the following conditions are met:

(1)The CB4 is connected to the internet

(2)The SSHub App is installed and logged in on your smartphone.

(3)  The DriveChat App is pre-installed on the head unit or downloaded via FindApps.

The following is the standard setup procedure:

1)  Log in SSHub App and pair CB4.

2)  Configure the Chatbot. From the SSHub App on your phone, tap DriveChat to enter the chatbot configuration interface.

3)  Tap to View All Available Chatbots.

4)  Select the desired chatbot, then tap "① Use on Car Stereo" to activate it. (In the future, it will not be limited to in-car audio systems and will also be available on more Android devices that support the SSHub App.)

5)  In the "Mine" list, toggle the chatbot on or off to enable or disable it on the CB4.

6.2.6 DriveChat Feature Update

DriveChat has been enhanced with new capabilities.

After waking up “DriveChat” on the device, you can try the following new voice commands:

① Travel Assistant

Get location-based recommendations for nearby services.

Example Commands:

“What restaurants are near Times Square?”

“What shopping malls are nearby?”

② Vehicle Diagnostics

Check vehicle status and diagnostic information using voice commands.

Example Command:

“What’s wrong with my car?”

Note:Requires connection to a compatible OBD hardware device.

③ Music Playback

Control online music playback using voice commands.

Example Command:

“Play country music”

Note:

The Spotify app must be installed.

Account authorization must be completed via

DriveChat → All Skills → Online Services.

④ IoT Device Control

Control connected in-vehicle IoT devices by voice.

Example Commands:

“Send ‘Thank you’ to the interactive display”

(Requires AI Interactive LED Sign)

“Set the ambient light to rainbow mode”

(Requires Ambient Light)

Note:

These devices can also be controlled manually via the

CarIoTHub or LumiAuto app.

6.2.7 Syncing Settings to DriveChat

After completing all settings on the SSHub app, tap "Sync" on DriveChat to synchronize the information to DriveChat.

This feature ensures that settings such as language and Chatbot selections configured in SSHub are synchronized with DriveChat.

6.2.8 Important Notes (DriveChat)

1.  Account Owner Recognition: Voice recognition and response times may be slightly faster or more accurate when commands are spoken by the primary account owner linked via SSHub.

2.  App Updates: Both the DriveChat app (on the CB4) and the SSHub app (on your phone) are updated periodically. Instructions or features may change. Always refer to the latest app versions for the most current information.

3.  Network Dependency: DriveChat relies on an active internet connection on the CB4 for processing commands and AI responses. Response times may vary depending on network speed and stability.

6.3 LumiAuto App - Ambient Lighting Control

The LumiAuto app is pre-installed on the CB4, enabling control of compatible ATOTO lighting accessories (such as the CI-FLT01 Interior Footwell Lights). It allows users to customize in-cabin ambient lighting according to personal preferences.

(CI-FLT01 Interior Footwell Lights.The CB4 does not include the lighting accessory.)

Key Points

• The CB4 comes with the LumiAuto App pre-installed.
• Users can pair compatible lighting accessories to experience in-cabin lighting customization.
• Detailed setup, installation, and usage instructions for the accessory are provided in the CI-FLT01 User Manual.

Accessory Setup & Reference

For full instructions regarding compatible accessories, including installation and app configuration, please refer to the dedicated CI-FLT01 User Manual available on the Eproductcare website:

Navigation path: Eproductcare → More → Footwell Light Kits →

CI-FLT01

Alternative method:

You can also scan the QR code below to access the CI-FLT01 User Manual directly on your smartphone.

6.4 OBD II Apps

CB4 supports OBD II. Compatible OBD accessories can be connected to run OBD II–related applications, such as Torque.

For optimal OBD functionality, it is recommended to pair the CB4 with the ATOTO AC-4450 On-Board Diagnostic Scanner (not included).

Setup & Usage:

1. Install the OBDII Device

In most vehicles, the OBDII port is located in one of the following areas:

• Under the dashboard on the left side of the steering wheel
• Beneath the steering column, near the fuse box
• Above the driver’s footwell, along the lower edge of the dashboard panel

Insert the OBDII device firmly into the vehicle’s OBDII port.

2. OBDII Bluetooth Connection

Step 1: Enable Bluetooth on CB4

On the CB4, turn on Bluetooth, then navigate to:

Settings → More → Connected devices

Step 2: Pair the OBDII Device

Tap “+ Pair new device” to search for available Bluetooth devices.

When “OBDII” appears, tap it to start pairing.

Step 3: Enter the Pairing Password

When the Bluetooth pairing request window appears, enter the password: 1234

Then tap “OK”.

Step 4: Confirm Successful Connection

After pairing is complete, “OBDII” will appear in the Paired Devices list, indicating that the connection is successful.

3. Configure the Torque App

① Launch the Torque app.

② Tap the Adapter Status icon in the lower-right corner.

③ Tap the three-dot icon in the upper-right corner, then select “Settings” to enter the settings interface.

④ Go to "OBD2 Adapter Settings".

⑤ Tap "Connection Type" and select "Bluetooth".

⑥ Tap "Choose Bluetooth Device" and select the previously paired OBDII device.

For detailed installation procedures and usage instructions, refer to the AC-4450 User Manual on the Eproductcare website.

Navigation path: Eproductcare → More → OBD II Diagnostics → AC-4450

Alternative method:

You can also scan the QR code below to access the AC-4450 User Manual directly on your smartphone.

Important:

The upgraded version of DriveChat integrates a set of agentic AI services that are continuously being developed and released. Certain functions within these services rely on real-time vehicle ECU data obtained via an external OBD diagnostic device. Without the AC-4450, these specific agentic AI services will not function as intended.

6.5 CarIoTHub App

CarIoTHub is an in-vehicle IoT control platform, designed to centrally manage compatible Bluetooth BLE devices such as ambient lighting systems, OBD II Diagnostic, and interactive LED displays. When integrated with DriveChat, voice-based control and automation can further enhance the overall user experience.

Limited Device Compatibility

CarIoTHub supports only specific Bluetooth BLE devices that are officially compatible with ATOTO and use supported communication protocols.

It does not support all Bluetooth devices that can normally pair with smartphones.

6.5.1 Compatible BLE Accessories

① Bluetooth LED Message Sign

CI-VIALD13* – 13.5" AI Interactive LED Display

CI-VIALD19* – 19" AI Interactive LED Display

INT21A* – 21" Interactive LED Display (Single Unit)

INT21B* – 21" Interactive LED Display (Dual Pack)

② Car Interior Ambient Light:

AL-ILS150-150* – RGB Dashboard Hidden Ambient Light

③ Car Interior Footwell Light

CI-FLT01* – In-Car Ambient Lighting

AL-ILS60-100* – RGB Footwell Ambient Lighting

④ Smart LED Lights:

AL-F14-18W* – 4" 18W Work Light (2-pack)

AL-F14-36W* – 36W Work Light (2-pack)

AL-4_5O14-42W* – 42W Work Light (2-pack)

AL-12IN24-72W* – 12" 72W Combo Light (Single)

* All BLE accessories are sold separately. Availability may vary by region. Compatibility is subject to official ATOTO approval and firmware support.

6.5.2 Connecting Devices

(Example: Bluetooth Interactive Display)

Prerequisites

Before connecting the LED message sign, make sure that:

① The LED message sign is powered on.

② Bluetooth is enabled on your compatible or AI box.

Steps

1. Open the CarIoTHub app.
2. Tap the “+” icon in the top-right corner to go to the device connection page.

1. Tap the [Premium Bluetooth LED message] icon to search for nearby Bluetooth devices.

1. Choose your LED message sign from the device list to connect.

1. Tap the connected LED message sign to open its device management page.

Chapter 7 System Information

7.1 System Update

System Update App is a pre-installed system maintenance tool on the CB4, designed to help users easily check for, download, and install firmware updates.

Features:

1.  Check for Updates

Automatically check for new firmware versions to ensure users receive the latest feature enhancements and bug fixes.

2.  Online Download and Installation

Supports downloading update packages directly via Wi-Fi, and installing them without needing a computer or TF card or USB flash drive.

Operation Steps:

Tap the System Update App to check if a software update file is available. (The system will automatically detect if a new version is available.)

1)  If an update is found, tap the "Download" button to begin downloading the update file to finish system update.

2)  Once downloaded, tap "Install" and confirm the prompt to start the installation. The system will reboot automatically to complete the update.

7.2 Wallpaper

Method : Pictures From Settings >THEME

Step 1: Tap "Browse more", then select the picture you desire.

Step 2: Tap "SET WALLPAPER"

7.3 Phone Mirror

The Phone Mirror function allows you to cast your smartphone screen to the CB4 display.

Steps:

1)  Ensure that both your CB4 and smartphone are connected to the same Wi-Fi network, or that the CB4 is connected to your phone's hotspot.

2)  Open the "Mirror" app on the CB4, then tap the corresponding icon for your phone type.

3)  On your smartphone, swipe down the quick settings panel,

and tap the "Mirroring " or "Cast " icon to start mirroring.

Troubleshooting:

If screen mirroring does not work after following the steps above, restart the CB4 and try again.

7.4 LED Color Setting

Applicable Models: CB4CT / CB4DT models with LED light

(CB4A / CB4B models not supported)

You can adjust the lighting color and brightness on the CB4.

1)  Go to Settings >DISPLAY> LED Color Settings, enter the Settings page.

You will see three modes on the left: Daytime Mode, Night Mode, and Auto Mode.

On the right, there is a color wheel icon.

2)  Tap the center “Cycle” icon in the color wheel to browse through 11 preset color modes, or use the color wheel to select a custom color.

7.5 Factory Reset

If the device experiences system issues such as connection errors, abnormal operation, or unresponsive behavior, you may restore the system to its factory default settings.

Reset Steps

Go to:

Settings (app) → More → System → Reset options → Erase all data (factory reset).

Tap “Reset Phone” , “ERASE EVERYTHING” to confirm the reset.

The device will automatically restart after the reset process is completed.

Important Notes：

● A factory reset will erase all user data and settings on the device.

● Please back up important data before performing this operation.

● After the reset, you will need to set up the device again, including Wi-Fi, Bluetooth, and other system settings.

7.6 Exit CB4 Operation

If you want to exit CB4 without unplugging it, you can tap "Car" in the Apps, or tap "car" icon in the floating button.

"Car" app icon

Chapter 8 Troubleshooting

Important Note:

1.  If you have checked the points described in this chapter and the problem persists, unplug the CB4 for 10 seconds and then plug it back in.

2.  If the problem still occurs after following the suggestions, please contact Customer Service for further assistance.

1. General Issues

Issue 1: CB4 does not respond / does not power on / restarts randomly

Reason & Solution:

● Confirm wired CarPlay / Android Auto support

Make sure your original car head unit actually supports wired CarPlay or wired Android Auto.

CB4 cannot work with systems that support wireless CarPlay / Android Auto only.

● Check the correct USB port

Ensure the CB4 is connected to the original USB port specifically used for wired CarPlay / Android Auto.

Some vehicles have multiple USB ports, but only one supports CarPlay/Android Auto data transmission.

● Verify vehicle compatibility

Confirm that your car model is compatible with CB4.

● Check cable connections

Ensure all cables are securely connected.

● Insufficient USB power supply

For vehicles with weak USB power output (e.g., certain Nissan, Isuzu, Toyota, Lexus, and Volkswagen models), use the included Y-shaped power cable and connect it to a cigarette lighter socket or a high-power USB port.

● Possible power cable issue

If the CB4 still does not power on, the supplied power cable may be defective.

Please contact your dealer or ATOTO official customer support to request a replacement cable.

Issue 2：Original car head unit cannot recognize CB4 system even when properly connected and powered

Reason & Solution

● Incorrect connection mode:

Ensure CB4 is in the correct mode (CarPlay or Android Auto) according to your head unit. Press and hold the "CP/AA" pinhole for 2–5 seconds to switch between CarPlay and Android Auto.

● Compatibility limitation:

Certain car models or head units may not fully support external Android system overlay. Check CB4 compatibility list.

● Aftermarket head unit compatibility:

Certain aftermarket head units may experience protocol incompatibility or unstable connections. If this occurs, please contact ATOTO Customer Support for further assistance.

● Try “Link” app again:

Tap the “Link” or similar app on the original head unit to manually access CB4.

● Restart devices:

Power off CB4 and original head unit for 10 seconds, then reconnect.

Issue 3: CB4 loses power after being used for a while

Reason & Solution:

● Insufficient or unstable power supply: For stable operation, the CB4 requires a stable 5V / 1A power supply. If necessary, please use the provided Y-shaped power cable to ensure adequate and stable power.

● Overheating due to poor ventilation. Avoid placing CB4 in enclosed spaces like glove boxes or armrests.

Issue 4: CB4 disconnects and restarts when releasing the brake pedal at a stoplight

Reason:

● Vehicles with a Start-Stop system automatically turn off the engine at temporary stops. When the engine restarts, the battery may experience a brief voltage drop, causing CB4 to reset.

Solution:

● Confirm whether your vehicle has a Start-Stop system.

● If yes, try disabling the Start-Stop system.

● If the problem is resolved, check whether the Start-Stop function can be permanently or manually turned off. 

2. Bluetooth Issues

Issues1: Bluetooth fails to pair

Reason & Solution：

● CB4 or phone may already be connected to another device: Disconnect the current Bluetooth connection before pairing again.

● Device not in range or not discoverable: Enable Bluetooth on both CB4 and phone. Ensure device is discoverable and within range.

Issues2: Bluetooth screen lock not working

Reason & Solution：

Device not paired or out of range: Ensure phone is paired with CB4. Enable Bluetooth unlocking in BT Lock app.

3. CarPlay / Android Auto Connection Issues

Issue1：Wireless CarPlay/Android Auto cannot connect

Reason & Solution：

Bluetooth or Wi-Fi not enabled, device not compatible:

Enable Bluetooth and Wi-Fi on both phone and CB4. Ensure phone is not connected to other networks. Pair through CB4_xxxx device in Bluetooth.

Issue2：LED indicator flashes slowly

Reason & Solution：

Unable to connect to CarPlay / Android Auto: Check phone compatibility (iOS 9+ for CarPlay; Android 11+ for Android Auto; older devices may have limited support). Reboot CB4 and retry connection

4. TF Card Issues

Issue: Cannot play media files

Reason & Solution:

● Unsupported file format. Supported video formats: TS, 3G2, AVI, MKV, WEBM, MPG, MOV, 3GP. Supported audio formats: MP3, OGG, FLAC. Convert the file if necessary.

● Unsupported file system. Replace the TF card with one formatted in a supported file system.

Chapter 9 Technical Specifications