Other information:
Each tire, including the spare (if provided), should be checked
monthly when cold and inflated to the inflation pressure
recommended by the vehicle manufacturer on the vehicle placard
or tire inflation pressure label.
(If your vehicle has tires of a different size than the size indicated
on the vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation pressure for those tires...
Reasons for the indicator to come on or blink
A tire pressure is significantly low, or the TPMS has not been calibrated.
If there is a problem with the TPMS or the compact spare tire is installed,
the indicator blinks for about one minute, and then stays on...