Question 1

How does TPMS work?

Accepted Answer

There are two different TPMS designs. Direct TPMS works by using sensors inside each tire to monitor air pressure. Indirect TPMS does not use sensors. With either system, if the pressure drops below the recommended level, the system triggers a warning light on your dashboard, alerting you to check your tires. This helps prevent blowouts, improves fuel efficiency, and ensures better driving conditions.

Question 2

Why is my TPMS light still on?

Accepted Answer

Your TPMS light comes on whenever there is a large drop in your tires' air pressure. Sometimes, the light stays on shortly after you refill the tires with air. While this could be a sign of a punctured tire, a TPMS light that stays on for an extended period can also be caused by a malfunctioning sensor that needs to be replaced. Have one of our certified experts near you check your tires and TPMS and keep your vehicle road ready.

Question 3

Is it OK to drive with the TPMS light on?

Accepted Answer

Driving with the TPMS light may indicate unsafe conditions and it should be addressed promptly. indicates that one or more tires may be underinflated, which can lead to accidents, tire damage, or vehicle instability. If you must drive, keep it short, drive slowly, and check your tire pressure as soon as possible. To help avoid further damage, find a Pep Boys near you for a TPMS service.

Question 4

How often should I check my tire pressure?

Accepted Answer

Check your vehicle’s tire pressure often as part of a routine inspection, at least once a month and before long trips. Check your tire pressure after temperature swings. Cold weather can cause a pressure drop, while warmer weather can lead to an increase.

Question 5

How do I tell which tire pressure sensor is bad?

Accepted Answer

To identify a faulty tire pressure sensor, start by checking the air pressure in each tire and comparing it to the readings on your vehicle’s TPMS display. If one tire shows incorrect pressure despite being properly inflated, that sensor may be malfunctioning. Additionally, if the TPMS warning light stays on even after adjusting tire pressure, it’s a strong sign that one or more sensors need attention. A professional diagnostic check can help pinpoint the exact issue.

TPMS Service & Repair

TPMS Service Options

TPMS Sensor Replacement

Signs You May Need TPMS Service

Your tire pressure monitoring system helps alert you when tire pressure drops or sensors stop working properly. If you notice any of the following issues, it may be time to schedule TPMS service at Pep Boys:

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Where to Find the Correct Tire Pressure

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