Overheating mini cooper 2004 . just noticed that

mini cooper s heat not working - North American Motoring

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Jan 2, 2013 - mini cooper s heat not working R50/R53 :: Hatch Talk (2002-2006) ...Any way to determine if the heater core is clogged? And could it be ... Overheating issue / heater not working
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www.mini2.com > ... > Second Generation Faults & Fixes

Mar 6, 2010 - I too have a 2007 Mini Cooper with heater problems. It now has 96,000 miles and I have just started having this problem. Heater will not blow out hot air bottom or top vents when ideling or low speeds .... Join Date: Nov 2006. Heating not working - mini one 02plate - MINI Cooper Forum
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Heat not working, MINI overheating! - Motoring Alliance :: MINI ...

www.motoringalliance.com > ... > 1st Generation MINI > Cooper S

Check that your radiator fan is working if not check fan belt if it has one , if not check fuse . Next suggestion if all these are ok you may have a thermostat fault check the wires to this it may need relacing..

Turn off ignition. Press and hold the trip reset button, then turn the ignition on (don't start the engine), within 5 sec the SIA status will be displayed. Release the reset button. Press and hold the trip reset button for 5 sec, "rst" will be displayed. Release and re-press trip reset button.

The new status should be displayed.

sounds like it has a coolant leak, better take it to a qualified shop asap.

You either have a leaky hose or need a thermostat the fan is designed to come on to cool the radiator down when the engine heats up. have flushed your system lately it you may need to do this as well.

I have the same problem with 2004 cooperS.Changed the starter.Ran for a few days.Same problem-won't start.My temp solution is to press the clutch,keep the ignition key turned lift the foot off the clutch and press it again-after 2/3 tries,it starts.I think its the clutch,electronic connection problem and I'm not a mechanic-hit and miss.Any one has a solution,please let me know.

most likely is going to be a bad thermostat. when you are moving cold air comes through the grill cooling engine but when you stop you don't have that air and thermostat is not allowing flow causing overheating.

If it's really hard to replace, and your dealer wants to do it, yea.
You might shop around and find it much cheaper.

I had this exact same problem -- for about a year and a half! Replaced thermostat, replaced sensor twice, replaced overflow tank, replaced radiator cap, placed a grounding kit on the car in case the problem was electrical ... and was ABOUT to replace thermostat again and then the water pump when a new mechanic suggested we bleed air out of the cooling system. The heater core was PACKED with air, as was the upper hose valve area. Previous mechanic had been using a pressurized fill device to bleed the system and this had just been backing air into the heater core. There are two valves under the hood for bleeding air -- one on the heater core and one on the upper hose. It only takes a few minutes to fix this!

Make sure your fan is functional. If the fan is not working this can be a problem as it will not cool the engine.