Bmw Auxiliary Fan. He said those go out alot since they are esposed to lots of weather and such. If it was the problem then the fan wouldnt turn on with the AC on.
Auxiliary Fan for 1987-1995 BMW Part Number 64-54-1-381-633. If a relay sticks in the closed position after the ignition is turned off the following complaints could arise. For full BMW fitment information or for assistance from one of our BMW experts we recommend calling us 877-639-9648.
You would have 2 options with fixing that.
The speed is controlled by the DME with inputs from the temp sensor in the lower hose as well as the pressure switch the HVAC panel. Bapmic 64546921381 Auxiliary Condenser Cooling Fan Assembly for 2000-2006 BMW X5 E53. 330i E46 - 30L 6 Cyl 24 Valve InclFan Blade and amp Motor. -AC heater blower motor continues running.