Question on TPMS
#3
JK Super Freak
Thread Starter
I know on GM cars you have to program/activate the TPM sensor to each corner, that's the only way they will be recognized.
#4
JK Junkie
Yes. Centrifugal force. The computer will find them and they are not specific to any position meaning you can rotate them without programming.
There is an algorithm that causes the computer to probe a particular wheel (or all wheels...I'm not sure on that). The conditions must be met first. That is why it takes different amounts of time for different Jeeps with regards to how long it takes for their new sensors to be recognized. It's quite elaborate and I wish I had bookmarked it when I saw it because I cannot find it again. The sensors in the wheels have batteries which are rated for approximately 7 years of service. However, to make them last longer, the sensors must be rotating to make the connection to the battery. So by disconnecting when parked, battery life is extended.
There is an algorithm that causes the computer to probe a particular wheel (or all wheels...I'm not sure on that). The conditions must be met first. That is why it takes different amounts of time for different Jeeps with regards to how long it takes for their new sensors to be recognized. It's quite elaborate and I wish I had bookmarked it when I saw it because I cannot find it again. The sensors in the wheels have batteries which are rated for approximately 7 years of service. However, to make them last longer, the sensors must be rotating to make the connection to the battery. So by disconnecting when parked, battery life is extended.
Last edited by 14Sport; 02-06-2016 at 09:45 AM.
#5
JK Super Freak
Thread Starter
Awesome, thanks guys. I need to pull the wheels off the Jeep and go get them balanced and the TPM question was nagging me, if I had been running with only 4 sensors on a 5 tire rotation. Good to know they've all got 'em
#6
JK Junkie
TPMS is waste of technology. I can check my own PSI, it will go off if you air down and you will see that annoying TPMS light on the dash. First week I had my new Jeep I took my stock steel wheels off put new wheels and tires on them and Just turned off TPMS using AEV ProCal and never looked back.
#7
JK Super Freak
TPMS is waste of technology. I can check my own PSI, it will go off if you air down and you will see that annoying TPMS light on the dash. First week I had my new Jeep I took my stock steel wheels off put new wheels and tires on them and Just turned off TPMS using AEV ProCal and never looked back.
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#9
JK Newbie
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I just got an idiot light warning that my TPMS is 'malfunctioning' according to the owner's manual. The light flashes for about a minute, then stays on. Dealer said it is probably a battery in one of the sensors. Sucks. Going to see about disabling the whole system.
#10
JK Junkie
Doubt it's a battery as they are rated for seven years of active time. They are only active when the vehicle is in motion. They use centrifugal force to connect the battery in the sensor. Not sure if it would work but I would try disconnecting the battery negative for 10 minutes to clear the system and then see if it comes back. Otherwise I would disable it rather than putting money into repairing it.