AC light flashing, but AC working fine

toyota
camry

#1

2000 Camry (4 cylinder) - the AC light started flashing, but the AC is still blowing cold air. There is a bit of noise (sort of a deep whine) that wasn’t there before it started flashing and I hear the noise even when the AC is off. Any ideas?


#2

A flashing AC light means that the compressor didn’t rotate at the speed that the climate control module commanded.

This is usually caused by a loose/worn serpentine belt.

Tester


#3

Is there any way to tell if it’s worn? And will it damage anything if I don’t replace it. (I was just at a mechanic and assume, but I’m not sure, that he checked whether the belt was loose.)


#4

A broken serpentine belt won’t do much damage. Unless you want your alternator, power steering, and possibly water pump to keep working. That’s all.

Yes, go get the belt checked.


#5

It can be determined of a serpentine belt is loose. But it can’t be determined if a serpentine belt is worn by looking at it.

This video explains this.

Tester