Close
upvote
BMW 330i Car Problems

Blower Final Stage Fan Resistor May Fail on BMW 330i

Problem Description and 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.

(28 people reported this problem)

Problem Data

RepairPal Verified
Average mileage: 122,634 (38,000–210,000)
4 model years affected: 2001, 2002, 2003, 2006

Not Your BMW 330i Problem?

Brake problem? Or maybe a faulty head gasket cylinder?
Learn About Your Car Problems
Search For a Specific Car Problem
Viewing 1-12 of 12 comments
My fan for the a/c just stopped working 2 days ago. It was completely fine on Friday and not turning on at all on Saturday. I checked the heat as well to determine if it was the a/c or the fan. The heat didn't come on either. So, I suspect it's the fan.

Could it be the Final Stage Unit/Resistor that I read about? Could it be a fuse? Is so, where do I look? I took it to a garage and they wanted $140 just to look at it because they said they need to diagnose the problem with a machine. I declined and turned to the internet for an alternate opinion.

Thank you in advance for any help.


Mary.
My heater/Air conditioner blower has always blown intermittently, and at varying speeds. 3 days ago the blower stoped working altogether. I can still feel heat from the vents, but is not blowing out and causes quite a problem in the morning when the windows are foggy, will not defrost.
Electrical burning smell coming from vents inside car. I can turn off AC, wait a little bit and turn it back on an no smell. Does not happen all of the time.
radiator fan making loud noise and car runs hot after a few minutes, sometimes takes longer for hot light to come on but continues to have funny/loud fan noise