Bad serpentine belt symptoms Squeaking, squealing or chirping sound from under the hood of the car. Check engine light or battery light is illuminated on your dashboard. A/C isn't working. Power steering isn't working. The engine's temperature is high or overheating. Smell of burnt rubber. Serpentine Belts: What You Need to Know - Allstate Allstate https://www.allstate.com Allstate https://www.allstate.com