Symptoms of a Bad or Failing Heater Blower Motor Resistor

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Cost of Replacing a Bad or Failing Heater Blower Motor Resistor

Common signs include the car's heater not working or getting stuck on a certain speed, or something getting jammed in the blower motor. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Car Heater Blower Motor Resistor Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2013 Chrysler 300 $209 $139.08 $70.00 15% $246.58
2004 Ford Crown Victoria $122 $51.98 $70.00 23% $159.48
2009 Ford F-150 $93 $23.38 $70.00 28% $130.88
2012 BMW ActiveHybrid 5 $475 $194.98 $280.00 24% $624.98
2011 Land Rover Range Rover $211 $63.68 $147.00 27% $289.43
2008 Ford Mustang $93 $23.38 $70.00 28% $130.88
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How to Diagnose a Bad or Failing Heater Blower Motor Resistor?

blower motor resistor

The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. It is responsible for controlling the blower motor’s fan speed. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor. As the fan speed is one of the most frequently adjusted settings of the air conditioning system, the blower motor resistor is put under constant stress, which can cause it to eventually fail. A failed blower motor resistor can cause issues with the operation of the entire heating and air conditioning system. Usually a bad or failing blower motor resistor will produce a few symptoms that can alert the driver of a potential issue.

1. Blower motor stuck on one speed

A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The heating and air conditioning systems may still function at one speed, however the resistor will have to be replaced in order for full functionality to be restored.

2. Blower motor does not work on certain settings

Another common symptom of a faulty blower motor resistor is a a blower motor that does not function on certain settings. If the blower motor resistors’ internal components fail it may cause the blower motor to malfunction, or not function at all on one or more of the settings. This can also be caused by a blower motor switch, so a proper diagnosis is highly recommended if you are uncertain of what the issue may be.

3. No air from the vehicle’s vents

Another symptom of a faulty blower motor resistor is no air from the vehicle’s vents at all. Power to the blower motor is fed through the blower motor resistor, so if it fails or has any issues power can be cut off to the motor. A blower motor without power will not be able to produce any air pressure, and as a result the heating and air conditioning system will be left with no air coming from the vents.

As the blower motor resistor is the component directly responsible for powering the blower motor, when it fails it major issues with the blower motor and the heating and air conditioning system can be experienced. If your vehicle is displaying any of the symptoms above, or you suspect that your blower motor resistor may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the component should be replaced.

heating
air conditioning
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Recent Car Heater Blower Motor Resistor Replacement reviews

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YourMechanic Car Heater Blower Motor Resistor Replacement Service

Average Rating

4.8/5

Number of Reviews

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Tinashe

10 years of experience
28 reviews
Tinashe
10 years of experience
Tinashe was great. He did an excellent job fixing my vehicle and if I have any other issues I will be sure to request him.
2009 NISSAN SENTRA - HEATER BLOWER MOTOR RESISTOR - ROSWELL, GEORGIA

Shaun

7 years of experience
370 reviews
Shaun
7 years of experience
Sean was on time, fixed the problem really quickly charged a lot less than a local shop was going to do fantastic first experience.
2007 NISSAN SENTRA - HEATER BLOWER MOTOR RESISTOR - MESA, ARIZONA

David

10 years of experience
73 reviews
David
10 years of experience
David was nice and curteous. He listened to me when I explained what was happening with my car; and, explained to me what he believed, based on his experience in working with cars, was wrong with my car before servicing it and afterwards. As well as giving me future recommendations about my car.
1997 SATURN SL2 - HEATER BLOWER MOTOR RESISTOR - MARIETTA, GEORGIA

Stephen

16 years of experience
18 reviews
Stephen
16 years of experience
Great job. Stephen showed up on time, was done quickly, and explained what was done. I will request him next time I need car maintenance.
2012 FORD ESCAPE - HEATER BLOWER MOTOR RESISTOR - LAS VEGAS, NEVADA

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