I have a 2005 Hyundai Sonata, I just noticed it making a chirruping/squeezing noise when the car is still whether it is in drive and I have my breaks on or it is in park… What can it be?
Sounds like a belt or the belt tensioner. If you squirt belt conditioner on the belt and it stops, replace the belt. The tensioner is just a wheel with a bearing to keep the belt tight and they go bad and can make a chirping noise. Niether are expensive and should be replaced togeher.