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Mike S.
Mike S., ASE Certified Technician
Category: Lincoln
Satisfied Customers: 7230
Experience:  Lincoln_vehicle_mechanic
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My 2008 Lincoln MKX radiator fan does not come on when vehicle

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My 2008 Lincoln MKX radiator fan does not come on when vehicle is stopped idleing for long periods of time causing the engine to overheat. Is there a defective sensor ?

Well let's take a look at the wiring diagram, click here without trailer tow and here with.

Let's test the fuse first with a 12 volt test light or voltmeter. That will be the F5 or F5 and F6 depending on with or without tow.

Let me know how that goes first.

Mike S. and 3 other Lincoln Specialists are ready to help you
Customer: replied 3 years ago.

the fuse appears to be ok. What's next ?

What do you mean appears? Are you just looking at it or testing it? You must test it with a 12 volt test light or voltmeter.
Customer: replied 3 years ago.

it was tested - sorry bad choice of words.

Ok, next move on to test the violet/gray wire at the cooling fan module. It should have 12 volts all the time.
Does the check engine light remain on? If so check for a P0480 code- Fan 1 Control Circuit.
Actually test for any of these, P0480, P0481, P0482, P1474, P1477 or P1479
Customer: replied 3 years ago.
Check engine lite does not come on
Ok, this is up to you. If you feel like just trying a new cooling fan module or testing i. I found some procedures, click here and here. I started at KF.
Customer: replied 3 years ago.

ok thanks for your help.

Don't forget to rate my work.
Customer: replied 3 years ago.

Sorry we had to go and wasn't able to test the violet/grey wire. I will not be able to test it until this eve. I know you want to get paid so I can go ahead and rate to finish. Thanks