Siraj

Hello, I just got me a 2006 E60 550i, i don't have any sound in the vehicle and i've been looking around and looks like the usual suspect is the fiber optic lines, all the lights work on these lines for the GPS, Bluetooth and the AMP, even in the glovebox there is a line for the IPOD i believe and the light still works on it, i've tried resetting the display, pulling out the fuses and putting them back, got me a jumper and connected to each line still nothing worked. got me a cable and downloaded ISTA to get a TCU and some other codes pop up. any help is appreciated!

ISTA CODES

seanjordan20

You're going to have to walk the issues out. First make sure the battery is in good condition and clear the codes to see what comes back. Then troubleshoot one by one

Siraj

so all the other issues i found that there was some water leaking into the fuse integrated power supply module in the engine bay so that will take care of one of the Valvetronic Actuator getting power then disconnecting, but my main issue was the SOS and no sound while the fiber optics work can't seem to find any answer to this and i don't want to start changing the hardware and spending money guessing.

seanjordan20

Since you have ISTA have you calculated test plan to troubleshoot the issue or you stopped at reading the fault codes. You're going to have to troubleshoot. Also purchase a MOST loopback to isolate why you have no sound and SOS light is on.

Siraj

I have just started to use ISTA, i just did the code reading, tried clearing the memory thought it might help but it didn't, and the loop that i used is the MOST loopback, as mentioned above i have tried installing it after each fiber cable even though it had lights on but still no sound was coming from the vehicle and still had the SOS light, i started to think it's the amplifier what's broken

Rvn10

TCU: GPS Areal, Open Circuit
Troubleshoot that