Coolant fan

TOMMYHAT

MEMBER
2000 MERCEDES BENZ S430
V8
2WD
AUTOMATIC
145,000 MILES

2000 s430 mercedes I replaced the coolant fan and still not going on but I tested it and it does work but not in car, does it need to be reset is their any fuses or relays? Thanks

Sunday, August 7th, 2011 AT 12:32 AM

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check and test the coolant temperature sensor and fan relay

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Sunday, August 7th, 2011 AT 12:37 AM

TOMMYHAT

MEMBER
3 POSTS

Where is the fan relay loacated?

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+5

Sunday, August 7th, 2011 AT 12:40 AM

TOMMYHAT

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3 POSTS

Also I am not getting power to the fan plug

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Sunday, August 7th, 2011 AT 12:53 AM

RIVERMIKERAT

MECHANIC
6,110 POSTS

The coolant temperature sensor is located on the front of the engine at a 45 degree diagonal toward the front from the oil filler cap. My resources don't mention a fan relay, but that doesn't mean there isn't one. Relays are typically large square components similar to the picture I have attached. They are also usually located in a relay center under the hood. On Mercedes there are two: One by the bulkhead at the rear of the engine compartment and one up front by the battery, just behind the driver side headlight assembly.

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