R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Radiator fan question

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Old Sep 4, 2024 | 03:16 PM
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Radiator fan question

Just curious to know if anyone's fan comes on after shutting off the car after a long drive or on hot days.
When I first bought the car new back in 2003, we lived in FL and noticed that the fan would occasionally run after shutting down for about 3-5min on hot days.
Both low and high speeds work as they should. I often take long drives for hours at a time on hot days. But I find it curious that I haven't heard the fan come on after shutting down, in 19 years.

I would have to imagine the car is running cool or at least in the range of normal/safe operating temps (?)
 
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Old Sep 4, 2024 | 06:20 PM
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That's normal.
 
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Old Sep 9, 2024 | 02:24 PM
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Monitor your temps with inpa or similar.

these days all you need is a Bluetooth or WiFi obd device

low speed comes on at 105c. High speed at 112c from my best memory

 
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Old Sep 10, 2024 | 02:46 PM
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All normal (as I'd suspected).
Thanks for the confirmation guys.
 
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Old Sep 19, 2024 | 01:58 PM
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Another possibility

Had this issue myself until I noticed the radiator overflow tank was empty. After filling it to MAX with 50/50 mixture directly I took her out again.
The fan stopped running after the engine was off.
Noticed it needed coolant from time to time, but seemed to me the shortage of coolant was causing to fan to work overtime-even after the engine was off.
This may not be your situation, but worked for me.
Cheers!
 
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Old Sep 20, 2024 | 09:30 AM
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This is normal. The hottest point of the engine is right after shutdown. No coolant is flowing…
 
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