>I can’t get my steering‑wheel buttons to learn. When I go into the steering‑wheel key learning menu and hit “Start Program”, it tells me to press buttons on the steering wheel. But nothing happens at all when I press any of the buttons; the unit won’t pick up any input.

Head Unit: VWX7A

1. Try resetting the head unit first.

2. Perform factory data reset and test again.

3. Verify the Canbus wiring and Canbus option settings. Ensure the 8‑PIN cable is connected to the head unit (as noted in the dedicated user manual). Re‑select the correct protocol — no modification needed, just reselection.

Reference link: https://www.eononsupport.com/SearchDetail.html?SupportId=781

4. Unplug and re‑plug the Canbus decoder box, then test.

5. If steering‑wheel controls still fail to work: please send us screenshots of version info shown in the Carinfo App, head‑unit software version, and full wiring photos of the unit for further analysis and recommendations. Thank you.

https://www.eononsupport.com/ContactUs.html

>I can’t get my steering‑wheel buttons to learn. When I go into the steering‑wheel key learning menu and hit “Start Program”, it tells me to press buttons on the steering wheel. But nothing happens at all when I press any of the buttons; the unit won’t pick up any input.

Head Unit: VWX7A

1. Try resetting the head unit first.

2. Perform factory data reset and test again.

3. Verify the Canbus wiring and Canbus option settings. Ensure the 8‑PIN cable is connected to the head unit (as noted in the dedicated user manual). Re‑select the correct protocol — no modification needed, just reselection.

Reference link: https://www.eononsupport.com/SearchDetail.html?SupportId=781

4. Unplug and re‑plug the Canbus decoder box, then test.

5. If steering‑wheel controls still fail to work: please send us screenshots of version info shown in the Carinfo App, head‑unit software version, and full wiring photos of the unit for further analysis and recommendations. Thank you.

https://www.eononsupport.com/ContactUs.html

>I get no sound out of the head unit. Looks like several cables are missing.

Head Unit: DGRMX6S2

The optical and coaxial audio outputs of DGRMX6S2 are enabled by default, and there are no relevant setting options available in the system. You may directly connect the output ports to your aftermarket amplifier for use.

If the audio output fails to work properly, please follow the troubleshooting steps below:

1. Replace the connecting cables/wiring harness.

2. Open the Update Program app and upgrade the car audio firmware to the latest version.

If the problem persist, kindly provide a video showing the exact issue and wiring connection for our further analysis. https://www.eononsupport.com/ContactUs.html

>My head unit suddenly stopped working. The screen is completely black, no response at all. Feels like it’s dead.

Head Unit: E46A12S

1. Check the fuse following the steps in the reference video: https://youtu.be/jry8RZSW1NU). Replace it with a 15A fuse if damaged.
2. Disconnect the CANBUS first, then short-circuit the red and yellow wires connected to CANBUS (refer to this video: https://youtu.be/wP9G3GTeOSI) and test if the unit powers on:

• If it turns on: Replace the CANBUS cable and power cord.
• If it still fails to power on: The main unit likely has hardware damage, which cannot be resolved remotely. Please contact customer support for after-sales service. https://www.eononsupport.com/ContactUs.html

Regarding the issue with button responsiveness on the X6S / X6S2 following the recent update, our technical team is actively investigating the cause.

In the meantime, you can try this temporary workaround to restore functionality:

1. Press the RST reset button to reboot the head unit once.

2. Follow the tutorial video to re-learn touch buttons:

https://www.youtube.com/watch?v=6I0o2IRwZT8&list=PLBvHSrl30ivcrRVNP2nKUo3SRaRKi3uNM&index=5&t=36s

We are working to release an official fix as quickly as possible. Thank you for your patience and support!

https://www.eononsupport.com/ContactUs.html

>My head unit stopped working properly all of a sudden. After the MCU upgrade, I can’t get into the home menu at all.

Head Unit: UA12TS

Please follow the steps shown in the attached video: tap the specified button. Once redirected to the next page, long-press the display screen on all 5 devices to recalibrate the touch keys.

If the issue persists, kindly restore the system via the steps below. You may refer to this video: https://youtu.be/39Lx428G804

1. Keep the main unit powered on, then press and hold the RST reset button without releasing it.

2. Hold the reset button for roughly 20 seconds. Release the RST button only after the indicator light flashes rapidly three times for the second time; the device will boot into the system restore & upgrade interface afterward.

3.Tap the screen briefly to navigate options, and long-press to confirm. Select Wipe data/factory reset to restore factory settings.

4.Once restoration finishes, choose Reboot system now to restart the device.

5. If the above operations fail to resolve the problem, download the firmware to update the main unit and repeat the preceding steps. Replace the option Wipe data/factory reset with Apply update from Sd card or USB instead, and complete the following preparations first:

a. Download the firmware upgrade file.

b. Format your USB flash drive to FAT32 file system.

c. Copy the downloaded compressed file directly to the root directory of the formatted USB drive — do not unzip the file.

d. Plug the USB drive into the USB port of the main unit.

Firmware download link: https://drive.google.com/file/d/1tPmGQ8COvGmoAsQ4LIzNcSZa9dai7zRO/

>I need to re-pair every time the head unit powers on to get Android Auto working. Is there any setting I can adjust so the unit automatically connects with my phone after startup?

Head Unit: X3

Normally, if connected before the head unit shuts down, it will auto-reconnect upon restart.

1. Reset the head unit.

2. Restore the head unit to factory settings.

3. Turn on Bluetooth and Wi-Fi on your phone.

4. Verify vehicle battery voltage remains stable at 12V; unstable voltage causes memory loss.

5. If unresolved, please provide the head unit firmware version, phone Android Auto version and fault video to customer support for further investigation. https://www.eononsupport.com/ContactUs.html

>My V0056 won’t connect to the ECU. I’ve already checked my OBD II port, everything works fine and it can communicate with the ECU using other scanners. What possible causes could lead to this issue?

Head Unit: GMX6S-PRO

1. Please follow the instructions in this video:

https://www.youtube.com/watch?v=pQF-uCJNfOQ

2. First download and install the Torque APP on your phone. Next, turn on phone’s Bluetooth, search for and pair with your OBD device. Once the connection is established, go back to the Torque APP to proceed with operations.

3. If phone fails to connect to V0056, we recommend replacing the V0056 device. If the connection succeeds but the ECU data still cannot be read, this means vehicle’s OBD port does not grant access to ECU data, and this issue cannot be resolved.

>The touchscreen is totally unresponsive.
Head Unit: SD1X6S

1. Turn off device power ➜ detach control panel ➜ reinstall the panel ➜ tighten fixing screws ➜ restore power and perform function testing

2. Try upgrading the software via this link: https://drive.google.com/file/d/1-5v2butBArXCmPRFl2p3VW1QV5Jil-Mt/view?usp=sharing

   a. Copy the downloaded upgrade file to the root directory of your USB drive. Do NOT unzip it.

   b. Plug the USB drive into the main unit’s USB port; an upgrade prompt will pop up automatically.

   c. Tap "Yes" to start the upgrade. Do not disconnect the USB drive or cut power during the process. The unit will restart and return to the home screen once completed.

3. If the issue persists, please contact our customer support for after-sales assistance. https://www.eononsupport.com/ContactUs.html

>Installing A0125 AHD camera. All wiring seems right, yet reverse triggers a black screen. Just parking guidelines + No Signal show. Need help figuring this out.

>Head Unit: M3BKX7

1. Please follow the installation method shown at the 1:10 mark in Video 1 to install the rear view camera: https://youtu.be/H1mqN1Pfi0U?t=70

Directly connect the red trigger wire of the rear view camera to the 12V camera power supply wire at the back of the main unit, so the camera can draw power straight from the main unit.

2. Please adjust the reverse video system standard by following the guidance in this video: https://youtu.be/lrVe718R5vQ

3. If you have an alternative display screen available, we recommend connecting the rear view camera to it to check if the image displays normally.

4. If the issue persists after trying the above steps, please take clear photos of your wiring setup and send them to our customer support team. We will conduct further analysis and provide targeted troubleshooting suggestions for you. Thank you for your cooperation.

https://www.eononsupport.com/ContactUs.html

The head unit I bought automatically reboots roughly every 40 seconds. I’ve tried restoring factory settings and checking for available firmware updates, yet nothing fixes the recurring reboot issue.

Head Unit: GMSX7A

Please press the RST button first to reset the head unit, then proceed with the host software upgrade.

USB Upgrade Guide for X7 & X7A

1. Firmware Download

Firmware version: X7&X7A\_20260403

Download link:https://drive.google.com/file/d/1RUo8b73ZGnIGsFLgA0wMFhyrdDUm1DwY/view?usp=sharing

2. Upgrade Steps

a. Unzip the downloaded compressed file. Copy the extracted files "update.zip" and "onekey_upgrade_config.ini" to the root folder of your USB flash drive.

b. Plug the USB drive into the head unit. The system will upgrade automatically. The upgrade succeeds once the home screen reloads, then remove the USB drive.

3. Troubleshooting If Issues Remain

If the problem persists after the upgrade, please send us a video showing the malfunction. Meanwhile, check the items below:

a. Vehicle battery voltage: Unstable vehicle voltage causes abnormal operation of the head unit.

b. Wiring connection: Check for loose wires or poor contact. Reconnect the CANBUS adapter firmly.

>Charged the battery yesterday, ran an update this morning, and now my screen’s fully black on startup. Backup cam also doesn’t show anything when in reverse.

Head Unit: Eonon M3BLX6S

1. Press the RST button once to reset the unit, then retry power-on.

2. Reconnect the power harness and CANBUS cable. For universal units, only reattach the power harness.

3. Inspect the unit’s built-in fuse:

If blown: Replace with a matching rated fuse.

If intact: Check the vehicle’s audio fuse in the car fuse box.

If you cannot locate the car fuse: Reinstall the factory OEM head unit and test startup. If the OEM unit also fails to power on, the vehicle fuse is blown and vehicle wiring inspection is require.

4. For vehicle-specific dedicated units if the above steps fail:

- Disconnect the CANBUS harness, then short the CANBUS red wire and yellow wire together and attempt power-on. Refer to this tutorial video: https://youtu.be/wP9G3GTeOSI

- If the unit boots normally after shorting, replace the CANBUS adapter/harness.

5. If the issue persists after all troubleshooting: Record a complete video showing the abnormal status and submit it for technical analysis. https://www.eononsupport.com/ContactUs.html

>Spotify and MP3 keep cutting out/stuttering mid-drive. Can’t run navigation and music at the same time.

Head Unit: E46X7

1. Can’t run navigation and music at the same time?

Adjust navigation audio mixing here:

Settings > Device > Navigation Settings > Navigation Mix Mode

Settings > Device > Sound > Navigation Volume

2. Spotify/MP3 playback cuts out?

Update your unit firmware following this guide: https://youtu.be/JjoqqEjGr5A

3. If issues remain:

Capture your system info (Settings > System > System Info) and record a video of the fault. Send them to our support email for professional troubleshooting: https://www.eononsupport.com/ContactUs.html

Thanks!

>My touchpad buttons died yesterday, every single one does nothing. It worked flawlessly just a day prior.

Compatible with A13 / X6 / X7 Series

Please follow the instructions in the video below to perform touch calibration, then re-learn the key touch functions.

https://youtu.be/Akeg54DC2l4

>The CarPlay icons and entire UI show up way too big. There’s no Smart Display Zoom option in the head unit settings to tweak the DPI scaling.

Unit details:

Firmware version: 6.033 (stock factory build)

Latest MCU firmware

iPhone running iOS 26

Please reinstall the Zlink6 APP via the link below. This version restores the CarPlay smart zoom function:

https://drive.google.com/file/d/1T0GLRCtLC52GOe9CzoaGkW3eBChs3Qoz/view?usp=sharing

1. Download the APK file to a USB flash drive using a computer, plug the USB drive into the USB port of the device host, then complete the installation via the host's file manager.

2. Open the download link in the browser built into the unit, download the APK file and install it directly.

>The screen goes black even when the unit has full power. I’ve tried resetting, but nothing changed at all.

Head Unit: DGRMX6S2

1. Press the RST reset button once to reboot your unit.

2. Double-check all wiring connections and verify if the fuse has blown out.

3. Confirm whether button backlights, audio output and Bluetooth functions work normally besides the blank screen.

If the unit shows no response at all, follow the troubleshooting guide via this link: https://www.eononsupport.com/SearchDetail.html?SupportId=524

4. Inspect if the head unit power cables (BATT+, ACC, GND) are properly matched and connected to the corresponding vehicle wiring.

Stable 12V power supply is required for both the yellow BATT wire and red ACC wire to power on the stereo. You may use a multimeter to test the voltage of BATT and ACC terminals if available.

5. For vehicle-specific dedicated models: Disconnect the CANBUS harness first, then short-circuit the red and yellow wires originally linked to CANBUS. You may refer to this tutorial video: https://youtu.be/wP9G3GTeOSI

>Does the original dash LCD still show my trip computer info after installation?
Fuel consumption and other vehicle information were previously controlled via the original radio buttons. How can I toggle these features following the installation?

Head unit: EONON M3BKX6S

After installing the main unit, you can also control the trip computer on the original vehicle LCD screen.

You may refer to the video: https://www.youtube.com/watch?v=P0suhaVKObQ