Jim P., Dallas

Depending on what might have happened with your tires recently and the type of system on your vehicle, there are several possibilities.

First, if you haven’t experienced any tire-related problems or haven’t had the tires serviced, the tire pressure monitoring system (TPMS) could be malfunctioning and needs to be checked. The system uses sensors mounted on the wheels to monitor tire pressure, and if you had tire service, such as rotating the tires or replacing a flat, a sensor might have been damaged or knocked loose, so check into that as well.

Another possibility is that a sensor has conked out, which could trigger the warning light. The sensors on the wheels transmit radio signals to a control unit, and a remote possibility is that those signals are being bumped out of the way by other radio signals transmitted on the same frequency.


Before you run back to your dealer or where you had tire work done, try resetting the TPMS as explained in your owner’s manual. That could clear any electronic gremlins and get your TPMS back in business.

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Answered by Rick Popely on August 27, 2010 | Permalink

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