Since the weather got cold, my 2013 TL's audio system has decided it has to warm up before it will play. When I turn the car on, the audio remains silent for at least two minutes, irrespective of input source (FM, XM, disc, iPod, etc.). After about 2 minutes, it produces sound, but only for about 20 seconds before going silent again. This repeats for 6 or 7 times. Then it plays normally.
Has anyone else seen this behavior?

 

Most likely you have a cold solder joint in the amp. Im afraid this is going to require a trip to the dealer. I read this forum everyday, and I do not recall anyone with this issue.

 

any update on this?

 

The dealer scratched their collective heads and called tech support in California. Their solution was to replace the amplifier. That has fixed the problem - at least for now.