Why is the AC blower motor not working in my car?

When an AC blower motor is not working, the problem is usually related to the electrical system rather than the air-conditioning unit itself.

Common causes include:

• Blown fuse or faulty relay, which can stop power from reaching the blower motor
• Failed blower motor resistor, especially if the fan works on some speeds but not others
• Worn or failed blower motor, which may stop completely
• Wiring or connector issues, such as corrosion or loose connections

Checking the fuse and relay is a good first step, as these are quick and inexpensive to inspect. If those are fine, the resistor and blower motor should be tested.

When I run into issues like this, I usually take it to Bergman’s Auto Repair. They diagnose it properly and explain whether it’s a simple electrical fix or a part that actually needs replacing.