What is that warning light?!

If you're anything like me, you are very busy on a day to day or even week to week basis.  Checking my tire pressure is the last thing on my mind.  Luckily for me this light turned on to let me know something was needing attention.  As the temperatures finally drop a bit in San Diego, so does the air in your tires.   The Tire Pressure Monitoring System (TPMS) is a warning system that warn's a vehicles operator that there is an unsafe change in pressure in one or more of the tires.  The readings are provided by pressure sensing transmittors that are mounted inside each tire and sent to the ECU.  TPMS was first available in about 20% of 2005 model vehicles (under 10,000 lbs).   In model years 2007 or newer you 100% have TPMS.  
If the TPMS light comes on, the first thing to do is check the air pressure in each tire.  The recommended tire pressure can be found on a placard on the inside door panel.  We do not recommend you using the pressure indicated on the sidewall of your tires, as that is the maximum inflation pressure for the tire itself, not the tire when used on your specific vehicle.

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