Final Stage Resistor BMW owners are probably familiar with this component, as it is a common trouble spot in several models from the late 90s and early 00s. Blower works for 10-15 minutes then stops. 2001 325 ci: April 12, 2015 : Followup from the Pelican Staff: Don't know, you will need to test. The part hasn't arrived so we'll see if I made the right decision. What are the Symptoms of a Bad Blower Motor Resistor? Do they only blow one speed? Blower motor resistors can wear out; the blower motor no longer works correctly if this occurs. 2000 E46 323i, 3.0L and 2.0L Z3's Joined Nov 23, 2016 ... BMW Blower Motor Resistor - OEM Rein 64116923204 Blower motor(ACM): BMW Blower Motor Assembly - ACM 64119204154 . However, it stopped later that afternoon. The "blower motor resistor", which also goes by FSR (Final Stage Resistor) or by FSU (Final Stage Unit), is known to fry itself in almost every single E46 (3-series), E39 (5-series), and E38 (7-series) BMW. A blower motor resistor is an adjustable resistor. Before you buy any parts, first check the blower motor fuse (located in the main fuse panel-rear of glove box-fuse #50) to make sure it hasn’t failed. Would changing the blower motor fix it. I ended up ordering a blower for my 330i, because I recently had the resistor replaced, and the blower had been making a high-pitched whine. I just bought my second 2001 E46 coupe last week in VA, and the blower motor worked the entire trip here to Raleigh, NC, as well as halfway through the first day here. Registered. This article deals specifically with replacing the BMW E46 blower motor only; for details on your blower motor resistor, please read our article BMW E46 blower motor resistor replacement. If you start noticing 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, these are all the symptoms of the Final Stage Resistor failure. There are several symptoms that appear when the resistor of the blower motor is going bad. On a complete failure of the resistor the blower should not turn on at all. Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/112/aF/blower-motorHave the fans stopped blowing in your vehicle? The blower motor resistor controls the blower motor’s fan speed and ensures that the right amount of power reaches the motor. … The blower will make a high-pitched whine if it is failing. The Final Stage Resistor, or Final Stage Output, is the device that controls the speed of the blower motor. If i turn the car of and restart it the blower works again for 10-15 minutes then stops again. The resistor of the blower motor is responsible for transferring the electrical current that's required to move air through the vents of vehicle. electrical problems can be very time consuming and frustrating to sort out. DIY BMW E46 Blower motor Resistor, Final Stage Unit … If you have a BMW E46 or any other vehicle you may be having some symptoms of surging blower motor, or no fan at all, maybe even low blowing blower. Blower Motor Final Stage Fan Resistor Failure. This electrical component is used to control the air conditioning system of a vehicle.