Hi ,
The ac (auxiliary) fan does not come on in my 96 e300d. Ran some tests and it looks like the control module is faulty. I traced the wire/cable from the aux fan and noticed that it goes into the fuse box. After that i can't see where/what it hooks up to and don't see a control module inside the fuse box either. I have seen other posts in the forum that mention that the control module is located behind the driver's side headlight for 98 & Up W210s . I pulled the driver's side headlight assembly on my 96 w210 but there is nothing behind the assembly.

Please share your thoughts. Thanks & Have a great day !

smk_texas

Did you try the AUTO/AUTO trick?

__________________
CENSORED due to not family friendly words

x2 holding both Auto buttons for 10 seconds to test the fan.

The controller is below, not behind the driver side headlight. Remove the headlight, look behind the bumper frame. The signal is from the AC unit.

Sixto
98 E320s sedan and wagon

I did that (x2 auto button press down) and the blower motor comes on at full blast but the auxiliary fan does not.

You need to press and hold the auto buttons for 10 seconds.

__________________
CENSORED due to not family friendly words