BMW 528i Problem Report
BMW 528i Blower Final Stage Fan Resistor May Fail
The blower final stage fan resistor is known to fail. Symptoms are the heater fan speed varies regardless of the setting, the fan will not turn off when the car is switched off, or the fan will not switch on at all.
Blower motor worked erratically, then gave up entirely. BMW dealer mechanic said this is common for the vintage. - Visitor
Same symptoms as described. Replaced FSU/Blower Motor Resistor and problem seems to be solved. Made the repair myself. Part cost $67 at an import car parts store. Net savings of $183 from dealer costs (labor & parts). - scomer
Fan flows at full blast. Dealer fix under warranty - Visitor
heater motor under hood runs and drains battery after engine shut off.. resets of computer by battery disconnects with turn off of heater fan stops this but is very inconvenient - Visitor
blower fan speed increases and decreases eratically. went away after the internal resistor was replaced. - nschbmw5
Fan motor stopped working. Replaced the final stage fan resister and everything working again. - Visitor
The blower will not come on at all. It's hot outside here in South Carolina and I need help fast. How can I fix this. - Visitor
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