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On Nov 28th, Emily, owner of a Mazda 3, asked Patty:
I drive a 2010 Mazda 3. My tire pressure light is on, I have had my 5000mile service done they checked the tires for leaks nothing! When I pulled away it did go off, but that day I was driving to San Diego from Phoenix and sure enough half way there it came back on. This was about a month ago an it's still on. I don't understand what the deal is? Any ideas? Thanks!
Tire Balance Tire Alignment Tire Rotation Tire Pressure

Ask a QuestionAutomotive Expert Answers:


Colleen McGee, Driving Instructor at Americas Driving School
It sounds like something may be wrong with the sensor for the tire pressure light. If you have checked the tire pressure, and the tires are at the CAR MANUFACTURERS suggested tire pressure (usually found on drivers door panel), you have no need to worry about over inflated or under inflated tires. If the tires are inflated to the TIRE manufacturers suggested pressure, it is likely higher than what it should be for your car. Otherwise check to see if there is an electrical problem with the sensor for the tire pressure light. Hope this helps! Colleen
⟩ Answered on Nov 30th, 2010 by Colleen McGee, Driving Instructor at Americas Driving School

Georgia Brown, Director of Education at National Independent Automobile Dealers Association (NIADA)
The sensor for the tire pressure is super sensitive and even a change in the outside temperature can affect the pressure in your tires. We drive a Honda Civic and the first time we had a "Blue Norther", that light came on and stayed on until we added air to ALL the tires. Be sure you check with an air gauge and that they are all at the recommended pressure. Georgia Brown
⟩ Answered on Nov 29th, 2010 by Georgia Brown, Director of Education at National Independent Automobile Dealers Association (NIADA)

Amanda J Valle, Dealer, Certified Mechanic at AMSOIL
Emily, Your tires have an internal sensor inside your valve stem components that send a signal to the main computer. Your tire pressure gauge comes on within just a few pounds off. If you have a full size spare ,that too, has a tire pressure sensor gauge. You may need to just air the spare up a few pounds to have the light go off.
⟩ Answered on Nov 29th, 2010 by Amanda J Valle, Dealer, Certified Mechanic at AMSOIL

Audra Fordin, Owner at Great Bear Auto Shop
Hello Emily, Sure, I have an great idea! Stick with your instinct. If you think there is a leak in a tire and your tire pressure is low and your car says your pressure is low... I would have to agree with you. You have a leak. When checking for leaks, the wheel itself and valve stems can be a tricky leak to spot. Mechanically yours, Audra www.womenAUTOknow.com
⟩ Answered on Dec 21st, 2010 by Audra Fordin, Owner at Great Bear Auto Shop

Lori Johnson, Owner and Instructor at Ladies Start Your Engines
Dear Emily, It's possible the sensor for that wheel is bad. Have a technician test it. Lori Johnson www.ladiesstartyourengines.com
⟩ Answered on Nov 29th, 2010 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines

Pat Fleischmann , Director of First Impressions / Partner/Owner - Community Tire & Automotive Specialist at Community Tire & Automotive Specialist
It’s hard to say without first hand and looking at the issue... First thing to check is what the pressures are set at~ At this time, we also check the spare tire. On some vehicles the spare tire has a sensor as well, and it may not have been checked. There is a possibility of an issue within the tire pressure monitor system, such as a sensor failure. However, it’s usually a pressure setting issue. Good luck and please get it looked at, could be a simple issue. The holidays are too busy to be stuck on the side of the road...
⟩ Answered on Nov 29th, 2010 by Pat Fleischmann , Director of First Impressions / Partner/Owner - Community Tire & Automotive Specialist at Community Tire & Automotive Specialist

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