Blower Motor Failure
If the fan works only on some speeds, the resistor has failed. If it does not work at all, check the fuse, then the motor.
Can I drive it? Safe to drive
Safe to drive, but no defrost is a visibility problem. Fix it before bad weather.
Typical repair cost
$10-$30 for a fuse, $50-$200 for a resistor, $200-$500 for a motor.
General US estimates, not quotes. Prices vary by region, vehicle and shop.
Symptoms to Look For
These signs indicate you might be experiencing this issue
- No air from vents at any speed setting
- Blower only works on high speed
- Squealing or grinding noise from behind dashboard
- Burning electrical smell from vents
Potential Causes
Most likely reasons for this problem, sorted by probability
Repair Solutions
Step-by-step instructions to diagnose and fix the problem
1Blower Motor Diagnosis
- 1
Check the blower (HVAC) fuse with the ignition off
- 2
If the fan works only on high, the blower motor resistor is the usual cause
- 3
Listen behind the glovebox for the motor trying to spin or for leaves rattling in the fan
- 4
A burning smell from the vents means switch the blower off and have it checked soon
- 5
A shop tests the voltage at the motor to tell a bad motor from a wiring or switch fault
Need professional help?
Find a repair shop near you, or describe your exact symptoms to the AI mechanic
When to See a Mechanic
Do not wait if any of these apply
- A burning smell
- The fuse blows repeatedly
- Squealing from the dash
How to Prevent It
Simple habits that stop this problem coming back
- Replace the cabin filter on schedule
- Keep liquids away from the vents
- Fix leaks into the HVAC housing
Frequently Asked Questions
Only the highest fan speed works. Why?
The blower resistor or control module has failed.
Why does the fan squeal?
Debris in the blower or worn motor bearings.
Related Issues
AI-generated and informational only. This is not a diagnosis of your specific vehicle and does not replace inspection by a qualified technician.