Check the inside of the drivers door for the air pressure for your tire set up. Check all 4 wheels and make sure the they are the recommended tire pressure +2 lbs. (Accuracy of your gauge could influence how much + to add.) Drive the car for 3-16 minutes and it should reset itself. Most models don't have sensors on the spare but this would be a good time to check it out too.
If that doesn't work you could add a little more air. Beyond that the battery for one of the sensors is probably dead.
You will find that info in the drivers manual.
radioshack
They are 205/55/16
use consult-III to reinitialize sensors
How to reset the tire pressure light on a 2007 Nissan Sentra?
If you fill your tire to right PSI the light will reset itself.
The sensors are wheel position specific. They should reset themselves. If they are not in correct position they will not reset.
B12 means you need an oil and filter change, tire rotation, and air filter replacement.
how do you reset the tire pressure monitor for the g6 2008
there is a button near the hood release. Press it for a few seconds and it will reset the tire pressure indicator alarm.
what is the best tire for a jetta tdi 2002 at the best price
The tire pressure warning light on a 2008 VW Jetta City , parenthesis enclosing an exclamation point, can be reset once the pressure is restored. Press the set button on the dashboard.