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Defroster in Car Not Working: Causes and Solutions

Introduction

Winter is here, and it’s time to turn on the defroster in your car to clear the foggy windows. But what if the defroster is not working? It can be frustrating and dangerous, especially when driving in cold and snowy weather. In this article, we will discuss the causes and solutions for a defroster in a car not working.

Causes of Defroster Not Working

There can be several reasons why the defroster in your car is not working. Some of the common causes are:

• Blown Fuse: A blown fuse can cause the defroster to stop working. Check the fuse box and replace the blown fuse with a new one.
• Broken Defroster Grid: The defroster grid is a thin wire that runs across the rear window. If it’s broken, the defroster won’t work. You can check for any visible damage to the grid and get it repaired or replaced.
• Malfunctioning Switch: The switch that controls the defroster may be malfunctioning. You can test the switch with a multimeter and replace it if necessary.
• Low Coolant Level: The defroster uses heat from the engine coolant to clear the windows. If the coolant level is low, the defroster won’t work. Check the coolant level and add more if needed.
• Bad Blower Motor: The blower motor is responsible for blowing hot air onto the windows. If it’s not working, the defroster won’t be effective. You can test the blower motor with a multimeter and replace it if necessary.

Solutions for Defroster Not Working

Once you have identified the cause of the defroster not working, you can take the following steps to fix it:

• Replace the blown fuse with a new one.
• Repair or replace the defroster grid.
• Replace the malfunctioning switch.
• Top up the coolant level.
• Replace the bad blower motor.

If you are not comfortable with DIY repairs, it’s best to take your car to a professional mechanic for a thorough inspection and repair.

Conclusion

A defroster not working in a car can be a safety hazard, especially during winter. By identifying the cause and taking the necessary steps to fix it, you can ensure that your defroster is working properly and keep your windows clear and safe while driving.

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