2003 Audi A4 Cabriolet Logo
Posted on Jan 30, 2009

2003 Audi A4 Cabriolet ...cooling fans come on at start up

I have a 2003 Audi A4 Cabriolet 1.8L, turbo DOHC, 39k miles. I've been having a problem with the cooling fans and the check engine light coming on. Upon start up, (cold engine), the fans come on immediately.
I took my car to a local garage and he told me that the thermostat assy. needed to be replaced. After having the work done, I still have the same problem. Is there a cooling fan sender on this engine ? Any help would be appreciated.

  • skrudryver Jan 30, 2009

    Thanks for your reply. I've had this car for about a year and this is the first problem I've had with it. Can you tell me where the cooling fan sending unit is located?

  • Anonymous Apr 09, 2009

    I have the same problem. It only happens when the car is cold.

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  • Posted on Jan 30, 2009
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Yes this car should have a temperature sending unit that tells the fans to kick on. If it has two fans one of them is for you Air-condiontion, and it will turn on whenever the ac is being ran. One other possibility is if you bought the audi used the owner before you may have hard wired the fan to run whenever the car ignition is turned on. The only reason someone would do that is if they were to lazy to fix it properly.

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