Audio not working

Hermann · September 20

Hi , i drive an 2015 Rc-f and have now since some months the problem that on start up either the audio is working or not.

I checked the fuses and they were all fine. So i thought the amp was gonna bad since it is an common problem on the ML amp. The Trunk was also dry so no water damage. I sent the ML amp to Unitedradio for repair and guess what they told me,. Exactly the amp is fine and they cant reproduce the problem and now i really dont know what i could do next. Maybe someone of you have an idea?

RadicalCoupe-Fuji · September 21

You can do a diagnostic test that will see if its the amp or not.

Next time you turn on the ignition & theres no sound hold the MENU button & turn the headlights on & off 3 times.

If you get a code B15C3 its the common amp issue. Sounds like its the amp anyway though.

Hermann · September 21

44 minutes ago, RadicalCoupe-Fuji said:

You can do a diagnostic test that will see if its the amp or not.

Next time you turn on the ignition & theres no sound hold the MENU button & turn the headlights on & off 3 times.

If you get a code B15C3 its the common amp issue. Sounds like its the amp anyway though.

I did this what you said above before i sent it away for repair and it showed exactly as you said the B15C3 code. Well i have to try my amp when it arrives back from unitedradio back and if it still dosent work i have to sent it to another company to repair it.

RadicalCoupe-Fuji · September 21

Some websites say if you have that code they can fix it, so they must know what causes it. Im assuming its a fractured joint on a component or something because of all the heat cycling the thing gets in the boot of the car.

This place is one that seems to already know what to do with them while others will "take a look" which isnt easy with an intermittant problem. https://electronicrepairs.com.au/product/lexus-rcf-mark-levinson-amplifier-repair-3180/