Blower Final Stage Fan Resistor May Fail on BMW 323i

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: 125,193 (47,000–261,690)
2 model years affected: 1999, 2000
38 people reported this problem
Viewing 1 - 20 of 20 comments
It's freezing cold out and when I try to turn the heat up it doesn't blow any air at all. It works when it feels like it, I hit bump and the blower kicked on but started the car the next day and it doesn't want to blow any heat once again. I'm wondering if it is the blower motor "resistor"?
Cant control the fan blower it goes hi and then low even when I adjust it its got a mind of its own.Dealers cost lot of money to fix it, somebody can advise me please.
My AC blower would not run consistently. The AC blower would work intermitedly... but mostly not run. The BMW dealer wanted to replace the blower at $1100. I read online about the "Final Stage Unit" being the problem. I told this to the dealer, and they did not agree. TWO years later, I decided to just replace the Final Stage Unit, and then the blower worked with out issue.
It started out A/C would blow air till I come to a stop. When I was at a light or in traffic air would get real weak,did that for 2yrs. Then the air would go out and come on when it wanted to, as well with the heater. Well eventually both stop working and every now and then it will start blowing, no cold air or hot. My question is,could it be my blower motor.
Blower will not come on. Sometimes it works when I leave the setting on high. Sometimes it works if I turn off the car and turn it back on again. Today neither worked.
I have had this problem ever since I bought the car used, but did not know what it could be. I would like to find an inexpensive fix, if possible...
Air conditioner stops working. Display sometimes fades away but control button lights stay on. I have had the blower motor replaced once and the ac control module replaced 7 times sometimes with oem and sometimes with aftermarket. Doesnt matter which the results are always the same. I can sometimes bang on module and it will slowly start up. I live in texas our first heat wave was in March. Help!!!
no solution just pray for a warm winter.this car has cost me a bundle in repair cost over the years,never again.