Quote:
Originally Posted by samr46
I changed out my factory tires for winter tires using Tire Rack and local installer. Long story made somewhat shorter: the installer could never get TPMS warning lights to go out even though the TPMS was reading properly. When I switched back to summer tires, warning lights were still on. The installer indicated that his TPMS software was probably not up to date and that only Porsche could fix this. The dealership charged $60 to reset.
So am I doomed to run to dealer every time I change tires? |
Your dealer cheated you. You have to change
TPMS settings when you switch wheels and tires (summer or winter) to get the system to reset itself and then reacquire new values from the sensors. The only other reset is to disconnect and reconnect the battery, it forces a sensor relearn but will still show up wrong if the right wheel size and tire type isn't connected. Then once it's in re-learn mode, you just drive around for about 30 minutes to send the error away and bring the values up.
Until you do the relearn your add-air errors and wrong
tpms values will be persist.
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TPMS
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TPMS - The Tire Pressure Monitoring System provides early warning of any drop in pressure by continuously monitoring the pressure in each tire and alerting you in the onboard computer display in the event of a pressure deficiency. It communicates the exact pressure of each tire and/or their deviation from ideal pressure. This does away with the need for regular air pressure checks at the service station, which often prove highly inconvenient.
See the TPMS FAQ for more info. |
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