See also:

How Car Audio Works
AM and FM radio signals are broadcast from transmitter towers located around your city. They are intercepted by the radio antenna on your car. This signal is then received by the radio and sent ...

BRAKE PAD WEAR WARNING SOUND
The front disc brake pads have wear indicators that should make a high-pitched squealing or scraping noise when new pads are needed. The sound may come and go or be heard all the time when the veh ...

Tire Quality Grading
Department of Transportation quality grades - All passenger vehicle tires must conform to Federal motor vehicle Safety Standards in addition to these grades. These quality grades are molded on the ...