The fans are not turning on car temperature sits at 90?

RED76

MEMBER
2006 AUDI A3
1.6L
2WD
MANUAL
162,000 MILES

Hi, the fans are not working but I have seen a small switch that's not in place that makes them come on, but I can't find where it goes.

Saturday, August 13th, 2022 AT 5:26 AM

4 Replies

RED76

MEMBER
3 POSTS

Any idea where this goes this triggered the fan when pressed well held down for bit then they come on?

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Saturday, August 13th, 2022 AT 7:03 AM

KEN L

MASTER CERTIFIED MECHANIC
47,280 POSTS

Yep, that is broken. I can tell where it is from the picture, I guess it is a heat sensor for the radiator? Check the image below to see if this could be the part?

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Saturday, August 13th, 2022 AT 10:32 AM

RED76

MEMBER
3 POSTS

If your about I send another pic looks like there is another sensor there maybe a replacement but still the fans not working, is it still okay to drive for now if not stuck in lengthy traffic?

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Saturday, August 13th, 2022 AT 10:54 AM

KEN L

MASTER CERTIFIED MECHANIC
47,280 POSTS

I wouldn't, in the summertime the engine can overheat quickly. Dees the radiator cooling fan come on with the A/C? If not, you may have a bad fan motor. Here is a guide to check for power and how the cooling fan system works in the image below. Check the power to the main fan control module (fuse 3, 50-amp fuse panel A).

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (below). Please let us know what you find.

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