I had to calibrate my TPMS a few times over the past two weeks, after receiving warning for low pressure (finally it was a nail). Each time I run the calibration as described in the manual, but never got the dots turn green even after driving for more than half an hour during the same engine run cycle, as described in the manual. At restart the dots turn green, but the manual says they will, even if calibration is not complete..So my question is, to anyone who has done the calibration before, how long does it take to complete the calibration? Have you seen the dots turn green before switching off the engine?
TPMS Calibration
kospa60
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Mine is an xc90 SPA; but in case the system behaves identically...
Had all 4 tires trigger low tire pressure. I checked all 4 were about 2 psi below the recommended 38psi pressure. I kept the engine running while running a compressor that is powered from the DC socket in the center console to inflate the 4 tires. I inflated it a little over the recommended pressure (maybe 1-2 psi). After finishing, I completed the calibration button presses and returned the vehicle to the garage. Seemed to work ok the day after; I don't think I checked in between. I didn't drive it other than the few meters it took to get (in reverse) from the driveway to the garage. I don't think that small amount of driving would have been sufficient if any kind of rolling data was needed for the process.
Had all 4 tires trigger low tire pressure. I checked all 4 were about 2 psi below the recommended 38psi pressure. I kept the engine running while running a compressor that is powered from the DC socket in the center console to inflate the 4 tires. I inflated it a little over the recommended pressure (maybe 1-2 psi). After finishing, I completed the calibration button presses and returned the vehicle to the garage. Seemed to work ok the day after; I don't think I checked in between. I didn't drive it other than the few meters it took to get (in reverse) from the driveway to the garage. I don't think that small amount of driving would have been sufficient if any kind of rolling data was needed for the process.
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