12+ Bmw 3 Series Heater Blower Not Working Pics. Driving your bmw or mini for a while in the colder weather, you may notice a degradation (or complete lack) of output from your heater system. Use direct current to test the blower and if it does not work, replace it.
Apparently it was the original battery, first time it has been changed and registered.
It's easy to forget that the fluid in your ac system is in fact a working part of the system. The blower motor resistor or blower module gets hot as it powers the fan so, often times, they can burn out causing certain speeds another reason why your car ac fan is not working could be due to your cabin air filter. Thanks for all your help! Driving your bmw or mini for a while in the colder weather, you may notice a degradation (or complete lack) of output from your heater system.
