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S5 fan runtime

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Old Today | 07:11 AM
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Diego_t_s_'s Avatar
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Default S5 fan runtime

Hi! I just acquired a B9 S5. I have always used A-series cars, so this is my first S-series car from Audi, and I wanted to know if anyone knows if it's normal that when I shut the car off, the fan starts immediately, even when not driving hard, and stays on for about 2 minutes. I'm most probably overreacting, but if anyone could confirm, it would be a great help.

Have a great day!
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Old Today | 07:32 AM
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A lot of that will depend on the ambient temperatures the car has been driven in as well as the ambient temperatures of the air surrounding the car when you park it. As you do not list a physical location, we have no idea as to where you’re located.

— John
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Old Today | 08:02 AM
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My fan will stay on on particularly hot days or days of somewhat high load (very long drives, stop and go, high highway speeds etc). If I baby the car a bit for the few minutes before I get home it'll usually be silent.
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Old Today | 09:24 AM
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Originally Posted by Nikon1
A lot of that will depend on the ambient temperatures the car has been driven in as well as the ambient temperatures of the air surrounding the car when you park it. As you do not list a physical location, we have no idea as to where you’re located.

— John

Hi John, i live in Mexico, really hot over here. But this was at night, around 26 c.
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Old Today | 09:25 AM
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Thanks! I'll definitely try this out.
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Old Today | 10:21 AM
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At least where I am at, at 26C or there about, if you happen to have been driving hard before you stop, if you put it in D and drive chill for a few minutes so the oil temp drops back down towards "normal" the fan is less likely to kick on and stay on as soon as you stop.
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Old Today | 10:31 AM
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Originally Posted by Diego_t_s_
Hi! I just acquired a B9 S5. I have always used A-series cars, so this is my first S-series car from Audi, and I wanted to know if anyone knows if it's normal that when I shut the car off, the fan starts immediately, even when not driving hard, and stays on for about 2 minutes. I'm most probably overreacting, but if anyone could confirm, it would be a great help.

Have a great day!
If you have a v6 with single turbo (hot V) the fan may continue to run to cool down the turbo and avoid coking (not misspelling) the oil in the turboshaft bushings. Synthetic oils are far less susceptible to this than old mineral oils. I don't know if B9 has an oil circulating pump after the motor shuts down; such a device would also help avoid oil overheat problems. Their IS an electric coolant pump that circulates coolant after engine shutdown.

Last edited by SloopJohnB@mac.com; Today at 10:36 AM.
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