* If you only adjusted the tire pressure: Drive the car for a short distance (usually a few miles or even less). The TPMS sensor will re-read the pressure, and the light should automatically turn off once the pressure is within the acceptable range. If it doesn't go off after driving, you may need to check the pressure again to make sure it's correct.
* If you replaced a tire: This is more complicated. The TPMS light stays on because the system is detecting a sensor problem. Here are the possibilities:
* New sensor needed: If the new tire didn't come with a sensor, you'll need to have a new TPMS sensor installed in the new tire and registered with your vehicle's system. This usually requires a trip to a tire shop or mechanic.
* Sensor needs reprogramming: Sometimes, even if there's a sensor in the tire, it might need to be reprogrammed or "learned" by the car's computer. This can often be done with a scan tool, and again, a tire shop or mechanic is usually needed. Some newer vehicles can relearn the sensors automatically after driving, but it's not guaranteed.
* Sensor malfunction: The sensor in the new (or existing) tire could be malfunctioning, requiring replacement.
In short: For a simple pressure adjustment, driving is usually sufficient. For a tire replacement, you'll likely need professional assistance to get the TPMS light to go off. Consult your car's owner's manual for specific instructions.
