If your car’s climate control system doesn’t work as it should, it could be due to a problem with the blower motor resistor. In this guide, we will discuss what a blower motor resistor is and the symptoms of a bad blower motor resistor.
What Is a Blower Motor Resistor?
A blower motor resistor is a part of the HVAC system. This electrical component is used to control the heating and air conditioning system of a car.
Within the vehicle’s ventilation system (heating, ventilation and air conditioning), the resistance of the fan motor is responsible for regulating the intensity of the air that enters the passenger compartment.
The electric fan is the one that brings the air -hot or cold- into the vehicle through the air duct and the internal fans of the car.
When you change the fan’s speed on the instrument cluster, the blower motor resistor controls the speed that the blower motor runs at. Since the speed of the fan is adjusted frequently, the blower motor resistor sometimes endures a lot of wear. Also, the constant stress can cause blower motor resistor failure.
Location of the Blower Motor Resistor
The blower motor resistor works between the heater, AC and electric fan controls and is typically located under the dash, on the opposite side of the steering wheel and near the electric fan to keep the fan cool while in use.
What Are the Symptoms of a Bad Blower Motor Resistor
Usually, you can witness some signs of a bad blower motor resistor that can alert you to the potential issue.
Blower Motor Stuck at One Speed
One of the most common symptoms of a bad blower motor resistor is that it is stuck in one setting. The blower motor resistor is directly responsible for controlling the speed of the blower motor fan. In case the motor resistor fails, it may cause the blower motor to remain stuck at a particular speed.
You may still use the heater or the AC; however, you must replace the blower motor resistor to make it completely functional again. Moreover, other bad HVAC parts can also become a reason for the stuck blower motor.
Here are some more reasons why your car’s heater isn’t working.
No Air Coming From a Car’s Vents
Another symptom of a failing blower motor resistor is not getting air from the vehicle’s vents or a weak car air conditioner. The resistor is responsible to send enough power that moves the air with certain pressure; however, if you are getting low or no air from the vents that means there is some problem with the blower motor resistor.
The Blower Motor Does Not Work in Certain Settings
Moreover, another common blower motor resistor failure symptom is that the motor doesn’t perform in certain settings. This happens when the internal components of the blower motor resistor malfunction; therefore, the motor doesn’t work at all on one or more settings.
Another reason for the blower motor not working in certain settings could be a faulty switch. The switch is designed to control the blower motor resistor function. Thus, a proper diagnosis is recommended if you are not sure about the actual issue.
Blower Motor Resistor Repair Cost
The price of a blower motor resistor in the UAE is around AED 150 to AED 200, but the service costs to replace a blower motor resistor vary considering the type of vehicle you drive. It is wise to check the nearby service centres and get a quote from them.
Now you know the symptoms of a bad blower motor resistor. Make sure you quickly check the resistor if you witness any of the symptoms. You can buy a blower motor resistor and other AC and heating parts in the UAE on dubizzle and change it when needed.
Stay tuned to the UAE’s top auto blog for more information on car repair and maintenance.
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