Resetting the TPMS after tire rotation

[doubledave]

To reset one, you have to reset all. And if the reset all procedure fails, the Volt won't get any tire pressure data until you start and complete the reset all procedure.

[ChuckR]

I had my tires rotated at 7500 miles by my dealer on 10/6/11. Shortly thereafter I received a low air pressure alert on the right front tire. When I added air it turned out that it was the right rear tire that was low, i.e. the dealer did not relearn the TPMS after rotating the tires. No problem once I realized this. I've been monitoring a slow leak (2-4 lbs./week) in that tire ever since. Today I finally got the tire repaired. It had a 3/4" #10 screw imbedded below the surface of the tread, which had to be unscrewed to remove. Then plugged the tire.

Anyway, I had tried the TPMS relearn proceedure with magnets, instead of the relearn tool, with no success. Guess my magnets weren't strong enough. But today I successfully completed the TPMS relearn proceedure by bleeding air from the tires, instead of using the relearn tool.

[Ron C]

Anyway, I had tried the TPMS relearn proceedure with magnets, instead of the relearn tool, with no success. Guess my magnets weren't strong enough. But today I successfully completed the TPMS relearn proceedure by bleeding air from the tires, instead of using the relearn tool.

Do you think the magnets from a hard drive would be strong enough - they're small, but as i believe they're rare earth magnets they seem quite strong?

[ChuckR]

Do you think the magnets from a hard drive would be strong enough - they're small, but as i believe they're rare earth magnets they seem quite strong?

Don't have any experience in how strong the magnets have to be to work, but apparently the parts tray magnet referred to in the link in post #2 worked.

[DQL]

Do you think the magnets from a hard drive would be strong enough - they're small, but as i believe they're rare earth magnets they seem quite strong?

I tried resetting the TMPS last night with a rare-earth magnet from an old hard drive, and couldn't get it to work. I tried moving the magnet to the sidewall, on the side of the rim, and around the valve stem, but never got the horn chirp.

I was able to reset the TPMS by letting air out though. Do remember to push the button again after selecting "yes" to start the learning procedure. Then let air out for about 5 seconds and then stop, and you should get a confirming horn beep (although I recall there being some delay - wait for it). Subsequent pushes on the button after each tire didn't seem necessary - for the first tire I pressed the button again before moving on, but for all the others, the horn chirped and I moved on to the next tire without pressing the button.

After I got through all tires, I didn't go back and experiment to verify I knew exactly what to do, as it was getting late and I didn't want to bug my neighbor with lots of honks. So what I have above is what I recollect. If the reader finds something different, and has the time to keep trying to verify the exact sequence, please post.

Also, on my Volt the turn signals do NOT indicate which tire to do next. So it was important to know the sequence of driver front, passenger front, passenger rear, driver rear.

[Cord]

If our sensors use a centrifugal or centripetal device a magnet might trigger it . Was told it works on some tires.

Sorry in advance I always get centrifugal and centripetal forces wrong.

[Fulgerite]

So basically the TPMS tool is just a strong horseshoe magnet that GM sells for $79??? I have magnets. Guess I gotta try a magnet.

I wonder if this would work???

http://www.amazon.com/Master-Magneti...rseshoe+magnet

[black88mx6]

I tried letting out the air on my 2012, and this method would not work for me. The turn signal indicators did light up to tell which tire to work on. I have purchased the tool and it did work for me. I have read that only the 2011 cars can use the remote air procedure.

[Fulgerite]

I tried resetting the TMPS last night with a rare-earth magnet from an old hard drive, and couldn't get it to work. I tried moving the magnet to the sidewall, on the side of the rim, and around the valve stem, but never got the horn chirp.

Also, on my Volt the turn signals do NOT indicate which tire to do next. So it was important to know the sequence of driver front, passenger front, passenger rear, driver rear.

It may need to see a differential on the magnetic poles. (Not just a single field.) It may need to be a horseshoe magnet.

[Cord]

More TPMS info
http://www.teamji.com/fedex/tpms_serv_bulletin.pdf