Blower Final Stage Fan Resistor May Fail on BMW 328Ci

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 148,000 (140,000–156,000)
1 model year affected: 2000
4 people reported this problem
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blower has been failing, working on and off, now it stays on even after the car is turned off and it drains the battery