There are several different reasons why a TPMS warning light may come on or flash. The primary reason is a low tire. Once the tire is inflated, the malfunction indicator lamp (MIL) should turn off. When that doesn’t happen there could be other problems a shop may have to address. Other issues that may be triggering a light are dead batteries, faulty sensors, a blocked signal to the TPMS module or an electronics fault.
Whether the customer brings in the vehicle with a TPMS light triggered, or one triggers as a result of performing some tire service, not being able to turn off the MIL can sometimes cause headaches for shops. Here are a few commonly overlooked issues that could be triggering a warning light…
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