95 C280, Rear headrest won't go down
 

I can hear it click when I push the button on the dash, but they still stay locked in the up position. Is there a relay somewhere that might not be working properly?
And I'm having the same problem with the radio antena, it no longer goes up.
Any advice anyone, Thanks

When mine did the same I was told it was a vacuum line.

Could be the PSE vacuum pump. On our '99 C230K, it was the motor that runs the pump that died. Symptoms were inoperative central locking and non-functioning headrest drop. I think the motor and the pump are in the right side of the trunk. Have your mechanic check these two items first before checking the vacuum lines. Might save you some diagnostic time.

Here's a link to that discussion on my problem... http://www.peachparts.com/shopforum/showthread.php?t=164967