What fuse is for the heater in a car?

Locate the blower motor fuse, likely a 30 or 40 amp, it may be marked on the fuse box cover or in the driver’s manual. What is this? Use a test light or voltmeter to check for power at the blower motor fuse with ignition and blower motor on.

How do I know if my heater fuse is blown?

You may also need to use your multimeter to check if your fuses are blown. You can quickly determine by checking resistance with a multimeter. A good fuse will have nearly zero ohms of resistance, if the fuse is blown there will be no reading.

Does heater have a fuse?

An electric furnace is relatively simple. Most fuses are found in the main electrical service entrance. There is a possibility that the furnace has a separate fuse box as well, so be sure to check for another box if it isn’t labeled in the main panel.

What fuse controls the heater fan?

The blower motor is powered by a fuse-like device called a relay. If your heater or air conditioner does not blow air through the vents, this could indicate that the blower motor fuse has probably blown. While replacement is easy, the exact location of your blower motor fuse may vary from vehicle to vehicle.

Can a blown fuse cause heater not to work?

A blown fuse is a symptom not a cause. Always use a replacement fuse with the same amp rating as the original. If a new fuse blows as soon as the blower is turned on, the heater circuit or motor may have a short that should be investigated.

What causes the heater in your car to stop working?

A heater can stop working for a number of reasons, including: A low antifreeze/water level in the radiator due to a leak in the cooling system. A bad thermostat that isn’t allowing the engine to properly warm up. A blower fan that isn’t working properly.

Why does my car heater fuse keep blowing?

The three causes from the most common to the least common are: An electrical device has failed. If a wiper motor or power lock solenoid have fried and melted on the inside, it might start drawing too much power in an attempt to keep working. This overloads the circuit causing a short and a blown fuse.

Why is my car heater not working?

Where is the heater fan fuse located?

Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side.

Why is my car not blowing hot or cold air?

If your blower only works on the highest setting, your blower motor control module probably needs to be changed. If the fan isn’t working, you probably need to have the blower motor fixed or changed. If the air coming through isn’t hot, the heater core is probably clogged.