My 2005 CLK 500 with only 23000 miles the multi-function steering wheel control are completely not function at all.Early this year I am out of country for 6 months (I did not disconnect the battery) when come back the car start every things work fine but all the function on steering wheel are not function at all. What will be the problem? Any one can help?

 

how about reset the ECU ? have u tried ? 23000 miles huh ? How did you do that ?

Andy

 

fuse?

 

Not the fuse,I reset ECU twice does not work,my mechanic told me there is power to the multi-function control but does not sent signal back.
Another question "what will happen while driving with KEYLESS-GO suddenly the battery gone dead" Is the engine will shutoff?

 

i think the car will still on... but when u turn it off , it won't turn back on

 

CAR BATTERY ITSELF might be the problem,about a week later the battery will not hold charge I went to auto parts store to have them check they said the battery was fine,I change new one anyway.....EVERY THINGS COMEBACK ON

 

That's weird. If the battery was juicy enough to start the car it shouldnt affect the steering wheel functions.

I had the opposite problem. My car sat in a parking lot for nearly 8 months before I bought it. The battery was dead, it wouldnt start but all the functions including keyless go worked fine.