Blower Final Stage Fan Resistor May Fail on BMW 530i

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.

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Average mileage: 104,239 (35,000–171,000)
6 model years affected: 1994, 2001, 2002, 2003, more2005, 2007
40 people reported this problem
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problem details
2003 BMW 530i 60,000 mi,
No cool air coming out of vents but you can hear the ac compressor on.
BLOWER RUNS WHEN CAR IS TURN OFF THANKS GLENN 2glmiller@att.net
2002 BMW 530i 42,000 mi,
FAN BLOWER WILL NOT COME ON
2002 BMW 530i 119,395 mi,
The Blower final stage fan resistor switch failed...result, fan blower will continue to run and drain the battery after a couple of hours after being parked. Listen for sporadic fan blower cycling well after the engine has been cut off. In addition, note air flow exiting the arm rest center console between seat. The air flow pressure will fluctuate in strength, but is noticeably obvious as a function that should normally be switched off. New fan blower switch repair will easily run you over $450.00. Be careful not to get caught up with having to replace the entire blower...not necessary.
2002 BMW 530i 171,000 mi,
I live in Florida-the last few weeks my heater would go on by itself getting hotter as I drive in 90 degree weather. It will remain on even with the car off. Brought it to a repair shop and they could not figure it out. Brought it to a BMW Dealer and they want to keep it a couple of days with the diagnotic check started at minimum 250.00 without repair. That means Im held hostage for the entire Labor Day day weekend. Going to try replacing the resistor if I can locate one and find a mechanic to believe thats what it is. Im a single MOM and most mechanics take me for granted.
2003 BMW 530i 113,000 mi,
Blower runs when car is off.
Blower turns on and stays on even when vehicle is switched off. The climate control is also unresponsive.
2002 BMW 530i 127,576 mi,
Blower Fan runs loudly and won't shut off when the car shuts off.
2002 BMW 530i 113,000 mi,
Replaced fan assembly.
2002 BMW 530i 147,000 mi,
Replaced resistor under passenger foot area
2003 BMW 530i 148,000 mi,
A/C blower uneven operation; fan continues to run after ignition turned off; car will not start; no juice.
2001 BMW 530i 135,000 mi,
Blower was acting up, replaced the resistor and it's been working good as new.
Same problem. Bought a new resistor and it works fine now.
2002 BMW 530i 70,000 mi,
fan went on during the night while parked. Battery died. Called road service and replaced the battery. One week later new battery died. Took to dealer, replaced with BMW recommended battery. Died one week later. Took to local shop and paid $100.00 to study problem could not find problem. After a few months of this, I walked into the garage at 11PM one night and heard the heater fan running. Took the car to the dealer the next day, explained what I heard, and they replace some part and the problem is now history. The part was activating the blower to run during the nights which over time drained the battery. My current problem at 170,000 miles is Air Bag is making a knocking noise and cannot find anything in the internet regarding others having this problem.
2002 BMW 530i 35,000 mi,
But problem started long before, I just had no idea until I searched the net.
2001 BMW 530i 164,500 mi,
The blower will not turn off or cool the car
2003 BMW 530i 124,000 mi,
AC/Heater fan does not work
I am having the same problem. can anyone email a solutionand if it is something i can fix myself?