Model S P85 most speakers not working

[raffiniert]

Hi

I had my former (already sold!) Model S P85 AP1 MCU-2 (upgraded) in service because of panoramic roof problems. They replaced the pano motor, rear glass etc., quite costly, but I did this for the new owner while he still lets me drive his car until I get my Plaid back from paint protection film installation.
When picking the fixed car up from service, I noticed that the premium sound system does not work. Most speakers and the sub are off. It was late at night and I needed the car, so I picked it up anyway.

I tried reboots, nothing is fixing this. I wanted to look at the fuse, but Tesla specifically says to NOT change a fuse at fusebox 1 on your own, so I will not touch it.

Ideas?
Thanks

 

[raffiniert]

wow, so many responses, need some time to read through all of them ;-)

 

[vcor]

Some questions - Is this premium or basic sound? Which speakers work? How about the sub-woofer (if premium sound)?

On basic, 5 amplifiers in MCU1 drive 7 speakers. For premium, an additional amp offboard (on the left, inside the dash) that has 7 additional channels. You can follow the schematics to see where each speaker is connected.

I assume you've tried a reboot? Often fixes oddities.

 

[rxom]

HI, I've got a P85+ and no sound on rear speaker : anyone could have indeas from where is the problem ? fuse proble, or cable problem ? or something else ?

 

[rxom]

i think this video could help...i will try this in few days ...:

 

[raffiniert]

In my case, they simply forgot to reconnect a wire-harness after the sunroof service