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I'm not buying the motion sensing argument - you got a link to where you read that? I fired up my 07 yesterday after it had been sitting motionless for over a month (in storage/on a battery tender). No TPMS warning. If the PVC pipe and/or spare tire didn't work I don't think it had anything to do with motion sensing.
I've read it on All Data before. They go into a sleep mode after so long of no movement to save the battery life, and need to be woken up by driving.
You car simply had not ran the check.
Let the air out of a tire after the car has sat for a month(actually could be 1 day or less) , then start it up, I bet you wont get a low tire light right away.
Originally Posted by JDWalton
maybe they didnt think to retrain the sensors, after installing in the trunk.... I mean the signal will be different and unless you reprogram you would get a error. the point is you only reprogram once and put them away forever.
Why would the signal be different just because you moved them into the trunk? You would only need to reprogram new sensors, or ones swapped from another car.
Originally Posted by Art161
I guess results vary. I had the temporary spare on the right rear, and the regular tire in the trunk, with a nail or screw in it, but it was at about 30 psi. I never got the TPMS light, and obviously the tire in the trunk was not moving.
As far as Art's issue, I am thinking the tire in the trunks tpm had not gone into a sleep mode so it was still seen with 30psi? Just a guess.
