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Radiator Fan running

 
Old 06-01-2017, 06:50 PM
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Default Radiator Fan running

Is it normal for the radiator fan (I assume it is the radiator fan) to run after turning off your car? I have a 2015 A8L 4.0T. Now if I restart the car and turn it back off the fan stops.
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Old 06-01-2017, 08:03 PM
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Yes it's normal
has been for most modern high performance German engines as far back as 1999
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Old 06-01-2017, 09:08 PM
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Yes, my S8 after runs the fans commonly, even on a moderate day. D3 W12 only did when it got quite hot. Glad it does given the amount of heat under hood at shutdown. Those of us with D3 W12's saw a number of parts get pretty heat soaked over the years underhood, especially toward the back.
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Old 06-01-2017, 09:39 PM
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Happens on my S8+ pretty much every time I turn the car off, unless I have barely driven the car. It was also a surprise for me initially, coming from a V8 M3 which pretty much never did it.
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Old 06-02-2017, 04:10 AM
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Originally Posted by audisession View Post
Yes it's normal
has been for most modern high performance German engines as far back as 1999
Hmm I guess my other German cars must have been broken as they never did it. Now I know.

Last edited by Bryans; 06-02-2017 at 04:16 AM.
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Old 06-02-2017, 04:17 AM
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Originally Posted by tgomezS8 View Post
Happens on my S8+ pretty much every time I turn the car off, unless I have barely driven the car. It was also a surprise for me initially, coming from a V8 M3 which pretty much never did it.
Yes same here. Didn't have the issue with my Q7, X3, 540, X5, or 911.
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Old 06-02-2017, 06:59 AM
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Same here. I'm forever having people ask me if my car is still running! This motor really puts off some heat.
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Old 06-02-2017, 07:30 PM
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It has a lot to do with the fact the turbos are under a plastic cover on top of the engine. There is a temp sensor under there and if it thinks it might get hot enough to melt the plastic cover it runs the fans.
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