575M Radiator fan stuck on | FerrariChat
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575M Radiator fan stuck on

Discussion in 'Technical Q&A' started by marklotus, Dec 14, 2008.

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  1. marklotus

    marklotus Formula Junior

    May 8, 2007
    258
    Valley Forge, PA
    Full Name:
    Mark
    #1 marklotus, Dec 14, 2008
    I've just gotten a 2002 575M several weeks ago. I came back from a drive today, temperature in the 40's, and the radiator fan came on when I shut off the car. OK, I've had cars do that. An hour later, the car is cold and the fan is still on. I disconnect the battery to shut it off. When I reconnect the battery, the fan goes back on. I assume that it's a thermostatic switch that is stuck on somewhere.
    Any suggestions before I have to go to the dealer?
    Any help is appreciated.
    Mark
     
  2. Jeff Pintler

    Jeff Pintler Formula Junior

    Jul 20, 2005
    537
    Richland
    Full Name:
    Jeff Pintler
    #2 Jeff Pintler, Dec 21, 2008
    Ok so no response on this so My guess is there is a relay that controls the fans that has arc-welded contacts. You should be able to check the owners manual for fuse/relay locations to locate the bad relay. A good test is to switch the relay with the other side cooling fan to verify. My experience has been that thermostats last for decades. Sometimes the process of switching the relays causes the contact to unstick so you might just replace the relay anyway. Good luck.

    Jeff Pintler
    89 348tb, 86tr
     

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