Skip the auto shop - Our mechanics make house calls

Q: Tire pressure sensor giving false warnings

asked by on

I am just very frustrated with my 2010 Mazda3. I liked the added safety of sensors that could tell me if my tires were low on air or let air out if they happen to get overinflated. Unfortunately the valve stems and other components that came from the factory perform terribly. Is there an easy fix for this? The light on my dash is annoying and inspection is coming up, I don’t want a big expensive repair at 42,000 miles old.

A: Hello, the tire pressure monitoring system ...

Hello, the tire pressure monitoring system (TPMS) is an important system. It has helped reduce blowouts due to low tire pressure. The battery life of a tire pressure sensor is estimated to be five years. The battery life is reduced if you have tires replaced, or a blowout. The tire pressure sensor battery in each wheel can be checked with a scanner connected to the OBD port or a tire pressure monitor tool that can read data independently at each sensor. If you have to keep correcting tire pressure due to leaks you should have the tires, rims and valve stems checked for leaks. If the valve stems are leaking you might be covered under Mazda warranty technical service bulletin TSB 02-001/12 which covers the valve stems if they have neck breakage, hairline cracks, or the valve nuts have breakage. Mazda only recommends plastic caps. If the cap is made of metal or has a metal insert that will void the warranty due to galvanic corrosion causing more force needed to remove and install the cap causing strain on the valve stem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: 2005 Mazda6 hard to start

Hi there. Since the Check Engine Light is on then I would typically need to scan the computer for codes to see what the computer is seeing as a fault. This is the best way to start the diagnostic on...

Q: Lights not working proper

Your vehicle was not originally designed to run the low voltage led bulbs so some minor issues can occur. Swap the bulb or bulbs, that are not lighting up with the same bulbs from the opposite side of the vehicle....

Q: Just had the front brakes changed yesterday, along with an alignment and when I drive a shearing/screeching sound from the tires.

It sounds like something may have gone wrong with the brakes. I would recommend having the brakes rechecked to make sure that nothing is rubbing the rotors such as the dust shield or the caliper bracket. If you did the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...