ZERTRAN ZT-A9CAR-4G64
ZERTRAN Android Car Stereo Instruction Manual
Model: ZT-A9CAR-4G64
1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your ZERTRAN Android Car Stereo. This unit features a 9-inch touchscreen with 4G RAM and 64G storage, offering functionalities such as CarPlay, Android Auto, FM Radio, GPS Navigation, Bluetooth, and support for a backup camera. It is designed for Toyota Corolla and Matrix models from 2003 to 2008 (Left-Hand Drive).
Please read this manual thoroughly before installation and use to ensure proper functionality and to maximize your experience with the product. Keep this manual for future reference.
2. Package Contents
Verify that all items listed below are included in your package:

Image: Overview of the ZERTRAN Android Car Stereo and its included accessories.
- 9-inch Headunit
- Power Cable
- Cable Plug
- Camera Input Cable
- USB Cable (4-pin)
- USB Cable (6-pin)
- GPS Antenna
- RCA Wire Harness
- AHD Reverse Camera
- External Microphone
- Crowbar (for trim removal)
3. Setup and Installation
The ZERTRAN Android Car Stereo is designed for a direct fit in Toyota Corolla and Matrix models (2003-2008 LHD). While installation is generally straightforward, professional installation is recommended if you are unfamiliar with car audio systems or electrical wiring.
3.1 Pre-Installation Checklist
- Ensure the vehicle's battery is disconnected before starting installation.
- Verify all package contents are present.
- Gather necessary tools (screwdrivers, trim removal tools, wire cutters/strippers if needed).
3.2 Installation Steps
- Carefully remove the original car stereo and dashboard trim using the provided crowbar or appropriate tools.
- Disconnect the existing wiring harness and antenna cable from the original unit.
- Connect the ZERTRAN power cable and other necessary cables (GPS antenna, USB cables, camera input, RCA harness) to the new headunit.
- Connect the vehicle's wiring harness to the corresponding connectors on the ZERTRAN unit. The provided harness is designed for plug-and-play compatibility.
- Route the GPS antenna to a location with a clear view of the sky (e.g., dashboard, under the windshield).
- If installing the backup camera, route its cable from the rear of the vehicle to the headunit and connect it to the camera input.
- Carefully mount the new headunit into the dashboard opening. Ensure all cables are tucked away and not pinched.
- Reinstall the dashboard trim.
- Reconnect the vehicle's battery.
- Turn on the vehicle and test the stereo's functions.

Image: Visual comparison of the dashboard before and after installing the ZERTRAN Android Car Stereo.
4. Operating Instructions
4.1 Power On/Off and Basic Interface
- Power On: The unit will power on automatically when the vehicle's ignition is turned on.
- Power Off: The unit will power off automatically when the vehicle's ignition is turned off.
- Touchscreen: Navigate the interface by tapping, swiping, and pinching on the 9-inch touchscreen.
4.2 CarPlay and Android Auto
Seamlessly integrate your smartphone for navigation, music, calls, and more.

Image: CarPlay and Android Auto integration with the ZERTRAN car stereo.

Image: Connection options for Wireless Apple CarPlay, Wireless Android Auto, and Mirror Link.
- Connection: Connect your iPhone or Android phone via USB or Bluetooth. The unit supports both wireless Apple CarPlay and wireless Android Auto.
- Activation: Once connected, select the 'T-link' or corresponding CarPlay/Android Auto app on the headunit's screen.
- Voice Control: Use voice commands (e.g., Siri for CarPlay, Google Assistant for Android Auto) to control navigation, make calls, send messages, and play music without diverting attention from the road.
- Mirror Link: The unit also supports Mirror Link for both Android and iPhone devices via USB connection, allowing you to mirror your phone's screen.
4.3 FM Radio
Enjoy your favorite radio stations with clear sound.

Image: FM Radio interface with frequency display and station controls.
- Tuning: Use the touchscreen controls to scan for stations or manually tune to a specific frequency.
- Saving Presets: Long-press on a frequency to save it as a favorite station.
4.4 GPS Navigation
Utilize satellite GPS for real-time location and navigation.

Image: Examples of supported navigation applications.
- Offline Navigation: The unit can locate in real-time using satellite GPS without a network connection.
- Online Navigation: Connect to Wi-Fi to use real-time navigation apps (e.g., Google Maps, Waze) for traffic updates and live routing.
4.5 Bluetooth (BT) Function
Enjoy wireless audio streaming and hands-free communication.

Image: Bluetooth calling interface and music playback.
- Pairing: Enable Bluetooth on your smartphone and search for the headunit. Select the unit from your phone's Bluetooth device list and confirm pairing.
- Hands-free Calling: Make and receive calls directly from the stereo's touchscreen.
- Music Streaming: Play audio from your phone wirelessly through the car's speakers.
4.6 Steering Wheel Control (SWC)
Control essential functions without taking your hands off the steering wheel.

Image: Steering Wheel Control configuration screen.
- Configuration: Access the 'Steering Learn' or 'SWC Settings' menu in the unit's settings. Follow the on-screen prompts to assign functions (e.g., volume up/down, track skip, mode) to your vehicle's steering wheel buttons.
4.7 Dual Screen Display
Operate different applications simultaneously for enhanced multitasking.

Image: Dual screen display showing navigation and media playback simultaneously.
- Activation: Some applications support split-screen mode. Refer to the unit's software interface for instructions on how to activate and manage dual-screen functionality.
4.8 Car Reverser Camera
Enhance safety with a clear view of the area behind your vehicle when reversing.

Image: Car stereo displaying the rear view camera feed with parking assistance lines.
- Automatic Display: When the vehicle is shifted into reverse gear, the stereo automatically displays the video feed from the connected backup camera.
4.9 Wi-Fi Connectivity
Access online features and download applications.

Image: Car stereo interface demonstrating Wi-Fi enabled app access.
- Connecting: Go to the 'Settings' menu, select 'Wi-Fi', and connect to an available network (e.g., mobile hotspot, home Wi-Fi).
- Functionality: Once connected, you can browse the internet, use online navigation, stream videos, and download additional applications from the app store.
5. Maintenance
- Cleaning the Screen: Use a soft, lint-free cloth to gently wipe the touchscreen. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals or abrasive materials.
- Software Updates: Periodically check for software updates through the unit's settings menu. Updates can improve performance, add new features, and fix bugs. Ensure a stable Wi-Fi connection during updates.
- General Care: Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
6. Troubleshooting
If you encounter issues with your ZERTRAN Android Car Stereo, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Loose power connection, blown fuse, vehicle battery issue. | Check power cable connections. Inspect vehicle fuses. Ensure vehicle battery is charged. |
| No sound or distorted audio. | Incorrect wiring, volume too low, equalizer settings. | Verify speaker wiring. Adjust volume. Check equalizer settings. |
| CarPlay/Android Auto not connecting. | Incorrect USB cable, Bluetooth not paired, app not launched. | Ensure using a high-quality USB cable. Re-pair Bluetooth. Launch the 'T-link' app on the headunit. Restart phone and headunit. |
| GPS signal weak or inaccurate. | GPS antenna obstruction, poor placement. | Ensure GPS antenna has a clear view of the sky. Reposition if necessary. |
| Backup camera not displaying. | Loose camera connection, incorrect wiring, camera malfunction. | Check camera input cable connection. Verify reverse trigger wire is correctly connected. |
| Touchscreen unresponsive. | Software glitch, temporary freeze. | Restart the unit (turn vehicle ignition off and on). If issue persists, perform a factory reset (refer to settings menu). |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | ZT-A9CAR-4G64 |
| Screen Size | 9 inches (23 cm) |
| Display Type | Touchscreen |
| Operating System | Android |
| RAM | 4GB |
| Internal Storage | 64GB |
| Connectivity | Bluetooth, Wi-Fi, USB, RCA |
| Compatible Devices | Smartphone (iOS & Android) |
| Audio Output Mode | Stereo |
| Surround Sound Channel Configuration | 4.0 |
| Video Encoding Support | H.264, H.265/HEVC, MPEG-4, etc. |
| Package Dimensions | 15.75 x 9.45 x 5.12 inches |
| Item Weight | 5.06 pounds |
8. Warranty and Support
The ZERTRAN Android Car Stereo comes with a one-year warranty from the date of purchase.
For any questions, technical assistance, or warranty claims, please contact ZERTRAN customer support. Your consultation is always welcomed, and our team is ready to provide support.
Please refer to your purchase documentation or the seller's contact information for the most direct support channels.