- Faulty blower motor: The blower motor is responsible for circulating the heated air into the cabin. If the motor is faulty, it will need to be replaced.
- Faulty blower motor resistor: The blower motor resistor regulates the speed of the blower motor. If the resistor is faulty, it will need to be replaced.
- Faulty climate control unit: The climate control unit controls the operation of the heating system. If the unit is faulty, it may not be able to send the correct signal to the blower motor or blower motor resistor.
- Wiring problems: There may be a problem with the wiring that supplies power to the blower motor or blower motor resistor.
Check the blower motor resistor if the blower motor itself is working. The blower motor resistor is usually located near the blower motor. If the resistor is burnt or melted, it will need to be replaced.
