The "Car Squeaks"Troubleshooting Procedure
Brake Pad Warning Sensor - Most brake pads are designed with a warning sensor that creates noise when the brakes are depressed or when the car is in motion without the brakes applied. While driving this design informs the driver with a squeaking noise when the brake material has worn down to the minimum thickness and needs replacement. The brake pads noise sensor is also designed to protect the brake rotor from unnecessary damage.
Brake Pads with Noise Warning Sensor
Replace Front Brake Pads VideoCheck Serpentine Belt Tension. The primary belt function is to supply power to the steering system, water pump, air pump (if equipped) air conditioner and alternator. A serpentine tensioner is designed to hold a prescribed amount of pressure on the drive belt. This tension is needed for belt friction to drive various accessories such as an alternator and water pump. When the belt looses tension a squealing noise is heard, especially on acceleration.
Cracked Serpentine Belt