From STAR service manual library:
1. After failure of the front power window, replace ONLY the drive / motor + door control module / and NOT the complete power window / mechanism + drive /.
2. Motor defective
3. Door control module defective.

 

How can I check if it is the Door control module ? Where do I buy it from ?

I think for sure it is not the motor or regulator. Coz as I told I replaced with the new motor and kept the motor on the floor and press window down button, motor rolls, I press window up button, motor does not roll. So this means motor is fine (as both old and new motor do the same), regulator is not conencted and I have same problem so I guess regulator is not a problem.

Now what else it can be ?

Switch (No) - Coz I get same problem if I press passenger side switch and driver side switch.

Door Control Module - May be, How do I check this ? Where do I buy it from ? How much would it cost ?

Fuse - I dont know if there is any fuse. if yes where do I check ?




Another new thing happened. Driver side switch group all indicators are off now. They were on earlier after motor stopped. Only 1 day back those indicators went off. I guess that is something different. Unless you guys tell me it is related .... (((((

Please help !!!

 

To get door control module try this www.adsitco.com
They sell new, used and rebuilt parts for MB.
Good luck.

 

is there any way I can test my existing module ?

 

I checked this website "www.adsitco.com" , but could not find it there... anyone please help .. where can I find door control module ? How can I test that my existing one is a problem ...

 

My '03 C240 driver side power window switch will only raise windows if lowered by other switches.. New switch did not help. I noticed this.. at night when attempting to lower windows using the driver side switch: When I push the driver-side window button; I can hear a click, and the light at the bottom of the door blinks and comes back on. Same for rt/frt, lft/rear.. But when I push the down button on the driver door for the rt rear window; the light goes off and stays off till I release the rt/rear down button. Any ideas ? (I replied to this because I don't know how to post a question)

 

HI, your module on your drivers side door has packed up, get another one.