Had that happen two or was it three times, even before the latest update (3.4.4)

 

My turn sounds actually sound louder and I didn't adjust anything. Haven't it had it not work

 

When my indicator had no audible sound, I also lost all sound from the sound/infotainment system
Happened twice

 

A reset via the center display (CD) fixes this. Long press the little white line at the bottom of the CD past the screen cleaning display. Muted sounds (turn signal and/or radio) happens on occasion. I had this this past SUN. Last one before that was over a year ago.

 

Had this once in 28,000km/7 months. Cleared it via reset described above.

 

An interesting fix I've discovered is that I often realise the audio system isn't working before I get a chance to use the indicators - and that when that happens, turning on the indicators kicks the audio into working. Works 3 times out of 5 and the other 2 times the indicators don't work either and you have to do a reset. It happens to me about 3 times a month I would say...

 

That happened to me a few times. A reset should clear it up.

 

Yes I've had this too - mid drive. The car audio also went silent. I restarted the Infotainment system while driving, but this did not fix it. After turning the car off and going to they gym, it all worked fine again from then.