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Yes, this is indictating at least 1 low tire of the 5, maybe more...Check ALL 5 tire pressures and set them to 29lbs, as per the specs and then turn your key to"ON"...then push and hold the button under the steering collumn until the light on the dash flashes 3 times, indicating that you have re-set the computer to recognize the pressure that you now have set....
There are two ways to reset the indicator light - the first is to hold down the button (hidden under the dashboard next to the steering column) until the light goes out. That's a reset. There's also a reactivation, you hold the button until the light flashes three times and then release, that's for use after a wheel is changed, etc. Make sure they have done the reactivation, not just the reset. If that doesn't work, have them check the technical service bulletins. Everyone gets confused on this. I see it all the time. Good luck and thank you for using Fixya
The Highlander uses an Indirect Tire Pressure Monitoring System versus Direct type.
There is NOtransponder in the air valve. The H/L uses a plain tire old valve. Thus, there is no PSI reading done by this Indirect Type System. It uses the ABS speed sensors to calculate differences of tire rotationalspeed among the Four rolling tires(the Spare IS NOT included). When the spare tire is put on, say when yu get a flat tire, the TPMS button must be pressed. (Recalibrated)
Direct Type TPMS costs more for Toyota and only puts it on select models. i.e. the Land Cruiser... But for Toyota, the Indirect System meets DOT's TPMS mandated minimum Requirements for 2007 vehicles.
The Direct type system uses a transponder/PSI reader type Air Valve on each tire(including the Spare). Each of the 5 tires send a reading of the PSI to the reciever in the Vehicles TPMS ECU. It has a small battery and is self powered. Battery must be replaced when yu replace your tires. It must be carefully mounted. Each tire has it's owner frequency channel and ID. for it to be recognized by the ECU. This system is more precise. But has it's own set problems as a result.
It is the original design TPMS going back to the 1980's introduced with the Corvette and the Runflat Tire option.
What was the problem you faced when you tried to lower the tire pressure? Why would you need to lower the tire pressure unless 1 tire was over filled if it was low to begin with? You do NOT need to change the tire pressure for summer or winter months. The tire pressure amount should be the same all year.
I have Toyota with TPMS so I have some experience... things that come to mind off-hand are: - Low tire pressure - Pressure sensor damaged during replacement of tires
Check the pressure on the tires.... if the pressure is good,then likely one or more of the pressure sensors were damaged by the shop who installed the tires, have them diagnose and replace it/them (at their expense!). Good luck.
The ! mark islettingyou know that a tire is low. Go put some air in them, you willbe fine.
Nice to know it is not a big problem.
If you wouldlikeyou could got to the dealer and request a printout of a manul for your car.