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Old 10-08-2003, 11:00 AM
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glenmore glenmore is offline
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Join Date: Sep 2002
Location: Los Angeles
Posts: 963
W124 aux fan on at startup with cold engine

Why would my aux fans come on at startup with a cold engine?

For the morning commute, with night time temperatures having been in the low 60'sF, the start is normal. The car will then sit for about 8 hours with ambient air temperatures in the mid 70'sF. With the second start of the day, the aux fans will be on with the start and cycle on and off for about a minute. The temperature gauge is at 40-50C and rising to operating temps. Then everything is normal for the rest of the day. Starts with the car warm are normal.

Any ideas?


1991 300CE
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