Question about 2006 Mini Cooper

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2006 mini s keeps overheating. didnt notice till i stopped, and a fan of some kind is running and running. then today i noticed the thermostat was w a y UP! Is it a coolant problem? I've got less than 15,000 miles on it. It's happened a number of times before.

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  • tolworth39 Mar 13, 2011

    Mini Cooper S 2006 problem: I had the coolant topped off about three months ago becos when I stopped and turned engine off, a fan of some kind kept running kinda loudly. Two days ago, with temp in the low 40's, the same thing happened again, and its happened a number of times in past. There are less than 15,000 miles on it.

  • tolworth39 Mar 13, 2011

    I'll check the antifreeze, but what are the heads?

  • tolworth39 Mar 13, 2011

    Call me dumb, real dumb. But does the radiator take ordinary water? I'd had it in my head that Minis didn't use water. Right, wrong, just dumb??!!

  • tolworth39 Mar 13, 2011

    You seem to have nailed it. I put in more antifreeze (the level of which ain't too easy to see in a container that's not really transparent), went for a fairly longish drive, and no fans went on when I came to a halt. I'll keep an eye on it course, and if the problem returns I'll check for leaks, which I don't think I see at the moment.



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The good news is that the fans are working so we Know that the problem might be the thermostat sticking. If you are not loosing antifreeze anywhere then it is a thermostat or your water pump is bad. I advise you not to drive the car until the problem is resolved. You will end up with more problems if it overheats. And if it did overheat you might have warped your heads. Check youre antifreeze level.

Posted on Mar 13, 2011

  • Joseph Hawkins Mar 13, 2011

    Sorry I meant the upper and lower intake on the motor. If you are not losing antifreeze then this is not bad yet. But the overheating is a sign of the thermostat sticking closed. Or if you live in an area that gets below freezing your antifreeze could be bad and not anti-freezing also. So check and make sure that is not the problem. The worst case is the water pump is broken but usually will leak (but not always) if it is bad.


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Check that the radiator and over flow reservoir is full. It is possible that the thermostat is stuck closed causing the over heating. With that many miles on it you wouldn't think it would be the thermostat but it's possible. Another solution may be that the temperature sensor is bad causing a false reading on the temperature gage.

Posted on Mar 13, 2011

  • Steve Martineau
    Steve Martineau Mar 14, 2011

    You can purchase a 50/50 mix of coolant and water which is what should be present in the radiator. You can also purchase straight coolant and mix it with an equal amount of water.



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