1. Turn off the engine and allow it to cool down.
2. Open the hood of your car.
3. Locate the fuse box. It is usually a black or gray plastic box with a red or orange cover.
4. Remove the cover of the fuse box.
5. Locate the heater fan relay. It is usually marked with the symbol of a fan.
6. Remove the heater fan relay by gently pulling it out of its socket.
7. Inspect the relay for any signs of damage, such as burnt contacts or loose wires.
8. If the relay is damaged, replace it with a new one.
9. Reinstall the relay in its socket.
10. Replace the cover of the fuse box.
11. Close the hood of your car.
12. Start the engine and check if the heater fan is working properly.
If the heater fan is still not working after replacing the relay, there may be another issue with the electrical system. In this case, it is recommended to take your car to a qualified mechanic for further diagnosis and repair.
