The antenna on my C220 has a mind of its own. It is stuck in the up position most of the time, sometimes i see it lower, and then it goes back to the up position. But most importantly it does not retract itself like it used to do when i turn off the car. Does anyone have any ideas?

 

Check the relay unit that controls the antenna. The connections could be loose or
corroded. If OK, check the rlay itself.
Shan.