Why does 2008 Jeep liberty tire pressure light stays on?
The TPMS (Tire Pressure Monitoring System) is detecting a fault. Check your tire pressure. Most Jeeps run 33psi in the tires. After setting the tire pressure on all tires (including the spare if it’s a full size tire) then drive the vehicle over 20 MPH for 3 -5 miles. The light should reset, if not you may have a bad sensor. If it’s the sensor then you’ll have to take it to a qualified shop (someone that has the propper test / reset equiptment) to have it replaced. Sears and a few others can do it without haveing to pay the high price of a dealership.