Symptoms of a Bad or Failing Blower Motor Relay

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Cost of Replacing a Bad or Failing Blower Motor Relay

If the blower motor does not function, car fuses are blown, or relays are melting, you may have to replace the car blower motor relay. 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 Blower Motor Relay Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2010 Toyota 4Runner $89 $18.60 $70.00 29% $126.10
2009 Chrysler 300 $93 $23.37 $70.00 28% $130.87
2012 Toyota Venza $140 $70.21 $70.00 21% $177.71
2014 BMW X1 $105 $34.78 $70.00 26% $142.28
2006 Mercedes-Benz SL500 $112 $42.07 $70.00 25% $149.57
2012 Lexus IS F $127 $57.25 $70.00 22% $164.75
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How to Diagnose a Bad or Failing Blower Motor Relay?

Blower motor relay

The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor. The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air. The blower motor relay controls the current used to power the blower motor, and is subject to the constant on and off switching. Over time, it can eventually wear out. When the blower motor relay does begin to fail, the vehicle will usually display a few symptoms that alert the driver of a potential problem that should be serviced.

1. Blower motor does not function

One of the first symptoms of a problem with the blower motor relay is a blower motor that does not function at all. As the relay is the switch that supplies current to the blower motor, if it fails internally, then power will be cut off from the blower motor circuit, causing the motor to no longer function or blow any air from the vents.

2. Blown fuses

One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.

3. Melted relay

Another more serious symptom of a problem with the blower motor relay is a burned or melted relay. Relays are exposed to high current loads and can sometimes get hot when they develop problems. In serious cases, the relays may heat up to the point where the interior components and plastic housing of the relay will begin to melt and burn - sometimes even causing damage to the fuse box or panel as well.

Since the blower motor relay is essentially the switch that directly controls power to the blower motor, the entire AC system will be left unable to distribute its cooled or heated air if the relay fails. For this reason, if you suspect that your blower motor relay is having a problem, have the vehicle’s AC system diagnosed by a professional technician from YourMechanic. They will be able to determine if the car will need a blower motor relay replacement, or a different repair, to bring full functionality back to your AC system.

relays
air conditioning
blower motors

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Recent Blower Motor Relay Replacement reviews

Excellent Rating


YourMechanic Blower Motor Relay Replacement Service

Average Rating

5/5

Number of Reviews

9

Rating Summary
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Nicholas

8 years of experience
269 reviews
Nicholas
8 years of experience
Nicholas was very pleasant and helpful. He knew exactly what he was dealing with right away. You could tell that he had prepared for the repair. He was very willingly to explain to me and illustrate the problems I had with my A/C-Heater Blower.
1999 CHRYSLER TOWN & COUNTRY - BLOWER MOTOR RELAY - HOUSTON, TEXAS

TJ

23 years of experience
239 reviews
TJ
23 years of experience
TH was great! On time, honest, friendly and explained his process every step of the way. I will definitely recommend him!
2003 GMC ENVOY - BLOWER MOTOR RELAY - PORT CHARLOTTE, FLORIDA

David

10 years of experience
128 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 - BLOWER MOTOR RELAY - MARIETTA, GEORGIA

Jason

14 years of experience
427 reviews
Jason
14 years of experience
As usual Jason was right on top of things and would answer all my questions in a professional manner. Thank you Jason for being my mechanic. For any future problems I am definitely going to request you, and to any of my friends and family. Thanks for doing such a good job, and keep up the good work
2004 HYUNDAI SANTA FE - BLOWER MOTOR RELAY - HAYWARD, CALIFORNIA

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