First fairly warm days in Atlanta this week, noticed that my coolant temperature was riding what I would consider reasonably high at about 110C. Noticed it would drop significantly when the car started moving again. I looked in the engine compartment, while the car was running at about 105C and even with the AC on I did not see the fan come on.

This leaves me to believe that the fan is non-functional.

Is there a troubleshooting process to determine the cause of a non functioning electric cooling fan on a CID?... and if anyone knows, please tell me where to start...... Thanks guys

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Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.