The drivers power window on my 1996 C-280 won't go down. All the other windows work fine going both up and down. When I push the switch to the UP position I can hear the motor (or a relay in the door) click and the dash lights slightly dim momentarily; when I push the switch to the DOWN position no sound and no slight dimming of the dash lights.

I took the switch mechanism out of the console and manually operated the little booted button with no success.

Does this car have relays for the power windows? If so, where are they located?

Any ideas on how I can determine if it is the motor, switch, relay, or whatever?

Thanks,

Fearless