Loss of audio

[Dannydyn]

Sup fellas,

I was wondering if anyone with a B8.5 has experienced loss of sound in their cars, specifically those with B&O.

I’ve had it happen a couple of times now, randomly where sound would cut-off all of a sudden, for no apparent reason. Usually it happens when listening to music through Bluetooth (Spotify).

If I switch source at that point, like say, change to Sirius, SD card, FM, etc., the sound is non-existent there either (stations are listed on the MMI screen, but it’s as if the system is muted). The only thing that fixes this is turning the car off for a minute or so, and restarting it.

I’m trying to figure out if the culprit is the Bluetooth on my phone, the Bluetooth interface in the car, the MMI, or the B&O system. The fact that once this problem surfaces, and other sources (SAT, SD, AM/FM) are affected as well, makes me think this is something to do with the MMI/B&O, and not the Bluetooth interfaces on either the phone nor the car….

Any thoughts?

The car is under warranty, but if there’s something I can do to avoid a trip to that #$%@#^%$ dealership, I would like know.

TIA

[evanb]

Have you reset the MMI?

[Dannydyn]

Have you reset the MMI?

I did a specific reset just for the radio. Didn't feel like losing other non-related settings.... The radio reset didn't do anything.

[whiped]

I've had this happen once or twice when listening to music off an SD card.

Usually resetting MMI fixes it.

I always assumed it was something to do with the SD card as that is the only time it happens.

[wangshuo1989]

what's your MMI version, upgrade it to 0814 might fix it.

[Dannydyn]

what's your MMI version, upgrade it to 0814 might fix it.

I assume I need to take it to the dealer? If so, is there a cost associated with doing this upgrade?

[jygesq]

your car is 2014, should still be under warranty , dealer should fix it even if requires software up grade at no charge

[moose_head]

Once or twice. I think once was after a car wash. Also, a few times I had one of the speakers not working and it took a while to notice the sound wasn't right. I don't really use the Bluetooth audio fwiw.

I had the MMI unit replaced because of the volume knob problem (where it goes down two notches before increasing by one, etc) and I haven't noticed the audio cutoff since, but it was very rare anyway.

[Dannydyn]

your car is 2014, should still be under warranty , dealer should fix it even if requires software up grade at no charge

Ugh... I hate taking it to these incompetent, careless morons.

[wangshuo1989]

Yes, there were some codings involved. As for cost, it's free with warranty, otherwise expecting couple hundreds bucks from stealership..

[jmeenach]

Could this be an amplifier issue? In one of my previous vehicles, I installed an aftermarket system and one of my amps had a fan that went bad, which would make the unit overheat. Once that happened, some - and sometimes all - of the channels would shut down as a safety for the amp so it wouldn't completely fry. If I turned my stereo off for a few minutes to let it cool, it would play music again.

[Dr GP]

I've had it happen 3 times on my 2011. There have been previous threads about this and it is not uncommon. In my case, it came back after I turned off the ignition and started the car back up. Only happens with the B&O radios. BTW, mine happened while listening to the radio.