I just installed bigger tires with a 50 psi rating with new sensors. My problem
isnt that the light is on, it is that the system is still displaying my current psi as
40, not the new tire PSI. How do I correct this? The whole reason for getting
the new sensors was to monitor the new tire psi. Thanks!
There is a reprogramming tool they use to do this. You would think a tire shop would have done this. Otherwise the dealer can.
Ok, I reset the OIC, and now it is registering the front 2 correct tire pressures and nothing on the rear and the warning light is on. Do I need to get a tuner to adjust the computer levels?
You know, I just found out about this tool for reprogramming the tire sensors, so I am not sure on the procedure. Sorry on that one. But probably, What about stop and check at a tire shop? May only take a minute to do, someone just might do it for you.
GM truck: Relearn procedure. Have a air hose and a valve stem core removal tool handy, preferably a TPMS torquing core tool. Lock the parking brake. Set pressures at or near high end of pressure. Hold the door lock and unlock buttons on your key fob simultaneously for several seconds. The horn should chirp and the dash should read TPMS relearn, or something to that effect. Then starting at the drivers front tire, remove the valve core and allow the air to escape for several seconds until the horn chirps. Move to the Passenger front tire and repeat. Then the Passenger rear tire and repeat. Then the Driver rear tire and repeat. When the Driver rear tire relearn is complete, the horn will do 2 chirps to indicate the relearn procedure is completed. Set the tire pressures back to where you want and see if they read correctly. Remember, that the TPMS computer turns on the light when the tire pressure drops below a set point, but it can also turn the light on if there is too much pressure in the tires too, and 50 psi might be too much. The computer has no idea you WANT that much in there and is telling you that you added too much air. Unfortunately there is no fix for this situation as it's in the programming of the TPMS computer, and not a problem with the sensors. The sensors are only telling the computer how much pressure is in the tires. It's up to the computer to evaluate that data. Dodge Ram: Relearn procedure: Self relearn. Retrains as you drive. Ford F-series: Relearn Procedure: Take to Ford.
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