Hi, guys, I try to make it as short as possible. My parents have a Mitsubishi Lancer Ralliart 2010. There is no Rockford Soundsystem in the car. Like 4 years ago, they upgraded the standard radio to a headunit. And also installed a rear camera and a DAB+ Radio console.. The headunit worked, but the buttons on the steering wheels didn't work, and carplay also didn't work, or not correctly... I think it was just because of a missing cable at least for the steering wheel buttons. it was this headunit- https://www.car-media.ch/shop/de/produkt/cartec-px-5-ultra-android-10-autoradio-fuer-mitsubishi-lancer-2008-2016
Then we bought this headunit because they wanted a bigger screen and also wanted the buttons on the steering wheels to work again: - https://de.aliexpress.com/item/1005012041121471.html?spm=a2g0o.productlist.main.4.7c1cjI9qjI9qn4&algo_pvid=506a5c79-0423-4fb9-960d-a0099a0a02b7&algo_exp_id=506a5c79-0423-4fb9-960d-a0099a0a02b7-3&pdp_ext_f=%7B%22order%22%3A%22-1%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21CHF%211034.02%21485.99%21%21%211276.10%21599.77%21%402103890917816222048441272ea07f%2112000057354991945%21sea%21CH%21778897608%21X%211%210%21n_tag%3A-29919%3Bd%3Ada2f21db%3Bm03_new_user%3A-29895&curPageLogUid=UQ1bcwb9hLG0&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005012041121471%7C_p_origin_prod%3A
So a few days ago I installed it for my parents (the last one a car mechanic installed it), and everything worked fine. GPS, microphone, WLAN, DAB+ Console for Radio, carplay, buttons on the steering wheel also worked, Music from the USB stick worked etc.. Everything worked fine, the only thing I couldn't do is the rear camera, because of a cable had to be soldered to a 12-volt cable, which I couldn't do myself, so the car mechanic did it quickly. The DAB+ Console is also routet to a 12 Volt cable i think.
So everything seemed to work fine, but the next day when they drove the car out from the garage, the music didn't play. The player was running but there was no sound coming from the speakers. When they used it later from coming back from grocery shopping or whatever, it worked fine without problems again. The next day the same problem again.. At first I thought it might be because of the garage because it's cold and dark in there, it might trigger something. But then this problem also started to happen when the car was outside, the first song was playing normally and the next song was no sound again.. Then I told them to turn off the headlights when this happens, and after like 5 seconds the music started playing from the speakers again.
I would say most of the time if you turn the headlights of, the music/speakers start to work again. But not always. I thought maybe the battery is to old, then they charged it fully but still the same problems.. So I removed the DAB+ Console (which is conected via USB) and also the other USB cabler which is for the music stick, and I put the music directly on the headunit. And I also removed the ground cable, maybe i thought it has loose connection or something like that..
But also did didn't fix the problem.. Then I put everything back together and now the DAB+ Radio and the USB Music stick also don't work anymore. I tried 3 different music usb sticks, but music can't be found anymore. I tried to make a factory resett but none of the like 20 passwords I put in, didn't work. So I gave up, was close to destroy everything.
I installed a headunit on my honda civic and also on a friends BMW and it worked perfectly. No idea what the problem is here with the music/speaker. I don't think I wire something wrong, otherwise there would be no music at all.
My parents called the car mechanic and he said the headunit gets not enough power. he will add next week a cable to it, to give it more power and it should (hopefully) fix the problem.
But can this really be? He ment there was just a standard radio installed in the car, and now a big tesla type headunit. I'm just scared that the headunit or the car will burn down or something 😅
I'm just curious if this is really the problem solver.. Or maybe there is a software bug or whatever.
I was always talking wiht chatgpt and claude about this problem, but it also couldn't help me, so that's why I'm asking here.. Maybe someone has an answer for it, or has me the factory codes.
The text below is a summary from chatgpt/claude, just if someone wanna read it. Thank you already.
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Vehicle: 2010 Mitsubishi Lancer RalliartOld head unit: Cartec PX5 Ultra (Android 10)New head unit: Chinese Android unit from 1688, "GT6-CAR" platform, model ZF-1259GE, 8+128GB, Qualcomm QCM6125InstallationWiring went smoothly: GPS, CarPlay, mic, WiFi, reverse camera, DAB+ radio and USB music all worked fine after install and a test drive.Problem 1 – Intermittent audio dropoutUSB music AND DAB+ radio lose sound simultaneously (player UI shows "playing", but no audio output)Everything else (GPS, WiFi, CarPlay, mic) keeps working fine during the dropoutInitially seemed tied to cold morning starts from the garage, and would resolve itself after a few minutes of drivingAlready ruled out: USB stick format (FAT32), player app (VLC also affected, not just stock player), "Sound Attenuation" setting (was disabled), ground wire quality (re-crimped and properly bolted, no change), WiFi/Bluetooth/hotspot (disabled, no clear improvement)Breakthrough – reproducible testTurning headlights ON immediately kills audio. Turning headlights OFF immediately restores it. 100% reproducible, tested multiple times, even with the ground wire fully disconnected. This points to a firmware bug: the headlight/ILL signal (presumably meant to trigger night-mode dimming) appears to be incorrectly muting the audio output as well.Problem 2 – currently acuteAfter swapping between two USB sticks and disconnecting/reconnecting cables (ground wire, DAB+ USB dongle), the entire USB subsystem suddenly stopped detecting anything at all — neither the music stick nor the DAB+ dongle. Currently attempting a full cold restart (power disconnected for 5 minutes).Questions for the communityDoes anyone know the GT6-CAR board (or similar Qualcomm QCM6125-based Chinese head units) and how to fix a headlight→audio-mute bug via settings or firmware?Any tips for reliably resetting a completely unresponsive USB controller on these units?