I'm not a tech, but it sounds like a wire is not hooked up or a relay or fuse has a problem.

Have you checked your fuses and or relays?

If you were working on the engine, did you unplug anything and forget to hook it back up?

Hope that helps,

Alon

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon