It's never happened to me, thankfully.

Can you switch screens through the menu?

 

No sir!

 

WTF!? Take it in.

 

Never seen that before.

 

+1

It may be worth a call to the service dept. to see what the say.

 

Just be careful the dealership is mod friendly. You don't want them to make excuses about how your mods were the cause of it.

 

Reboot. Disconnect the battery, hook her back up.

 

I see the problem.

Driving in C mode. Happens all the time. Switch to S or M. Poor car

 

Very funny.

I had this problem when I had my C63. one of the Fuses has malfunctioned. go to the dealer and find out which one it is and replace it

 

My service department is really friendly towards mods, so I am good on that front. It only happens rarely, and yeah I can scroll through the menu options, just when this happens, it shows up for the audio/navi/tel but nothing else. Also, nothing on my headunit is affected. Going in this morning to see if they can diagnose it again, tried last time but of course (the problem didnt replicate itself). They are reinstalling my MACarbon steering wheel because I had the suede changed out for perforated leather.

I think it has something to do with the battery, because this all began to occur when the battery lost its juice during my stereo install and I had issues with re-setting/re-learning the sunroof and had TPMS issues.