Hi fbotros:

I bought the part from Mercedes Benz Canada for $55.65 (CAD)

The part number is A 006 545 14 24. ("SWITCH.AUXILIARY FAN")

I still haven't installed it as I have to wait for the engine to cool. It looks relatively easy to install.

I've had the Aux fan grounded and running and the car has remained at a constant 84 degrees all day. It's been pretty hot today 23 degrees celcius, and I've had the Air Conditioning on.

I'll summerize everything once I get the switch installed.

Thanks to everyone!

Brad.

__________________
Dr. Brad

2003 C320 4Matic Station Wagon
2002 C240 Elegance
1982 380 SEL Star Certified