cooling fan not working. on 2000 BMW 323Ci

Cooling fan isn't working. Car is not overheating I think because it's not warm enough outside. The problem started back in October and I noticed the car getting too warm and so I turned on the heater which brought the temperature back down to normal. Why would the fan stop working and what will it cost to fix it.

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1 answer
the cooling fan will only come on when the engine gets hot if its not getting warm check your t stat