Blower Final Stage Fan Resistor May Fail on BMW 325i

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: 115,506 (17,000–250,000)
7 model years affected: 1992, 1993, 2001, 2002, more2003, 2004, 2006
101 people reported this problem
Viewing 1 - 20 of 48 comments
Air conditioner/heater hisses as if it's coming on, but blows no air now in either mode. Is this an easy, inexpensive fix?
Blower motor keeps running after you turn car off and running. Battery. Down
Fan was intermittent. Dealer told me my blower resistor (final stage unit) has gone bad and the repair would cost $350. Didn't have the dealer perform that repair. Bough part online for $65 and found DIY online. Took 45 mins.
AC/Heater blower will not work
Blower fan resistor failed. When I switch on my AC the speed does not increase or decrease. A local technician got a new blower resistor and replaced it for
fan not blowing
Blower will not come on at all.
The heater blower does not work and blows cold air continually. I replaced the resistor back about a year ago. Do you have any suggestions for this.
fan stopped blowing air. One day it worked fine; the next it was dead. It won't work at any speed. Display lights up normally; it sounds like AC compressor runs if I turn on AC. Fuses aren't blown.
The blower speed varies up and down while driving with the AC on. Sometimes the blower will fail to operate at all. I have not had it repaired yet.
fan stays on unless battery is disconnected. if battery is reconnected, fan turns back on.
Blowwer final stage resistor failed. Fairly easy to replace not an expensive part. Problem was I could not control fan speed.
The fan is only blowing at the lowest speed
heater will work but my car warms up and i turn off the engine then turn it back on it doesn;t work at all
blower has stopped working. Lights on dash are working. No AC either
variable blowing, sometimes not at all, then finally just stopped working altogether. $500 for part and labor at a BMW dealer
Fan will not turn on
I was driving my bmw 330 i 06 then show me at the dash the warning of oil then the car turn of Complete can you help me
Fan stayed on when car was off.. replaced the part and it works fine.. took around 30 mins to repair
Heater fan not blowing