Quote:
How do the sensors communicate with the car?
Sorry,I could not resist.
Seriously,Each wheel has a battery powered radio transmitter that reads the tire pressure and sends a signal to the car's computer and displays the pressure on most models and other just have a light that comes on when the pressure is low.
Each manufacture has a setting at a certain pressure to turn the light on.
The valve stem actually doubles as the antennae for the transmitter.
Last edited by 68Cbarge; 11/08/09 09:10 PM.
