Fan running after shutting off car - MINI Cooper Forum

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post #1 of 6 (permalink) Old Jun 30th, 2010, 09:59 AM Thread Starter
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Hi
I have a 2006 Mini Cooper Cabrio S. I live in Melbourne Australia.
In the last year, only a handful of times I've experienced the fan running after the ignition is turned off.

However, in the past couple of weeks, the fan kicks in almost every time after turning off the engine.

In addition, when driving, and idling at a red light, the temperature gauge will shoot up and redline, but with the fan kicking in on high, it will eventually drop back down. Or once I start driving again, it will drop down to middle again.

I will check the Coolant level in the morning, hopefully I find that it is low, and this is causing the temperature to redline.

If this is the case, do I need to purchase special coolant from Mini? Or what should I be looking for? Is this something I can top up myself?
Or should I take it in to Mini to let them top it up and flush etc?

thanks,
yuf

Last edited by MINIAC; Jun 30th, 2010 at 02:36 PM. Reason: Duplicate posts merged
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post #2 of 6 (permalink) Old Jun 30th, 2010, 11:31 AM
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When you shut off the engine the coolant stops circulating, consequently the heat from the block transfers into the coolant in the block and head raising the temperature significantly, its enough to trigger the fan to switch on until the temperature drops. Designed to do this, happens more in hot weather or if you have been driving hard.
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post #3 of 6 (permalink) Old Jun 30th, 2010, 04:42 PM
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I find this happens every now and then to my car (fan coming on after the ignition is off) but im sure there is nothing to worry about but about your temperature gauge hitting the red mark, this happended to me I took my car to BMW and they said that the thermostat and the housing will have to be replaced replaced (luckly under warranty) and the problem has not happend since.
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post #4 of 6 (permalink) Old Jun 30th, 2010, 09:22 PM
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It's very bad news if the temp gauge is hitting redline often. The gauge doesn't really have any scale to it, it's either warming up, in the middle or overheating. Get it looked at ASAP. You dont want to keep doing that in case you warp your cylinder head or worse.

My fan often comes on after I have been driving enthusiastically and then get stuck in slow traffic or park up. Never any other time.


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post #5 of 6 (permalink) Old Jul 1st, 2010, 03:34 AM
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Funny you should mention. I have a 2004 (MY05) MCS with the exact same problem in Melbourne. I have taken it into BMW Doncaster who have said that it is a faulty thermostat which needs to be replaced (~$450 she quoted me)... it is currently getting fixed as we speak so hopefully that is it. I have also read that it could be the low speed radiator fan not functioning properly due to ?faulty fan or ?faulty fuse. Best to get it checked.

long live the supercharger
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post #6 of 6 (permalink) Old Jul 1st, 2010, 08:35 AM Thread Starter
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Thanks everyone. I have looked into the Mini Manual booklet - and under Coolant - it gives a bit of basic info (locating where the Coolant goes). I've opened up the cap to where the Coolant is housed and found that it was very low (bottom end of minimal).
I then called BMW Brighton and they said to just top it up with water. They recommend topping up with water between services - and they do the full flush and add new coolant at the time of service.

I've driven the Cabrio S today - and so far so good. The fan has not kicked in high at all. Fingers crossed this is the extent of it. Will check it in a weeks time to make sure there's no leakage of coolant.

Cheers.
Yuf
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