Radiator Fans
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Just yesterday I experienced this for the third time in owning the car: I start the car after being shut off for maybe 1-2 hours (engine is still a little warm) and after a few minutes of driving I notice a noise coming from the engine, get out and find the radiator cooling fans are blowing full blast (first time it happened I drove for about 10 minutes and the fans never shut off). I restart the car and everything is fine after. All three times this has happened in the fall/winter, with outside temps in the 30's-40's, with the engine warming up.
I'm thinking it's some sort of software bug and that's why I haven't talked to my SA about it yet. Or maybe my car has a ghost?
Curious if anyone else has experienced this strange behaviour? Car has 40,000 miles on it.
I'm thinking it's some sort of software bug and that's why I haven't talked to my SA about it yet. Or maybe my car has a ghost?
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Curious if anyone else has experienced this strange behaviour? Car has 40,000 miles on it.
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Sounds like your fan clutch may be going out on you. When the fan clutch on E39 went out, it was engaged all the time. Replaced it myself, bit of a pain but doable. They make tools to make it easier. I bought one afterward and have never used it.
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My Ride: '04 530d Executive, all options except sunroof and comfort seats
ECU remapped by ZipTuning to 260+bhp.
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On my other car this is normal (even when the car isn't fully warmed up yet) if the A/C is turned on.
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