TPS freaking out..FML

SheepDog · **Posted:** Sat Nov 28, 2015 3:56 pm

My TPS light just started flashing and is now constant and looks like it isnt reading the rear starboard tire pressure.... i dont have the manual with me.. what the hell is going on?!?!?!?!.. FML is it the tire or the system how do i check it. The tires are at the correct pressure at 60°F, so i know the tire isnt low.. Can i pull the fuse to make it go away.. or will that screw up other systems or throw a code?.

Scar0 · **Posted:** Sun Nov 29, 2015 12:28 am

SheepDog wrote:

My TPS light just started flashing and is now constant and looks like it isnt reading the rear starboard tire pressure.... i dont have the manual with me.. what the hell is going on?!?!?!?!.. FML is it the tire or the system how do i check it. The tires are at the correct pressure at 60°F, so i know the tire isnt low.. Can i pull the fuse to make it go away.. or will that screw up other systems or throw a code?.

Sometimes the sensor will get stuck. Air it down to 20 PSI and then air it back up. See what happens.

SheepDog · **Posted:** Sun Nov 29, 2015 8:18 am

Rodger will do... Hopefully that works

SheepDog · **Posted:** Sun Nov 29, 2015 1:49 pm

Gosh Darn your good Scar0! Took the culprit tire off the jeep, put it face down with a slight angle so the stem was down hill. As i let air out a little water came out maybe a teaspoon, aired it down to 15, back up to max pressure (55psi) and down to 33... put the tire back on. Took it off the jacks, put the key in and ....BOOM!!! :BANANA:

... TPS is reading it again and the light is gone!!!! Thanks a whole bunch!!! Should i have it replace anyway or do you think it will be ok?

Scar0 · **Posted:** Sun Nov 29, 2015 6:49 pm

Glad you got it fixed up.
It should be good to go. Its a semi common problem with the cold weather setting in.
Condensation gets in the sensor and causes problems. It can even freeze in there if it is cold enough. If possible always us air that has a condensate water separator in the line when airing up.

SheepDog · **Posted:** Sun Nov 29, 2015 7:02 pm

well

.... it worked for about 20 miles and off it went.... then on again... stopped to get gas, turn the igniton key on.... same thing as before... :dead:

.darn oh well we tried for a brief moment we saw the light at the end of the tunnel only to realize it was another train

Scar0 · **Posted:** Sun Nov 29, 2015 9:59 pm

Well bummer... :banghead:

Gageraid · **Posted:** Sun Nov 29, 2015 11:07 pm

That's unfortunate to hear on a 2012.

Scar0 · **Posted:** Tue Dec 01, 2015 12:07 am

It could still have water freezing inside it. You could try airing down & back up again.

ajohns1288 · **Posted:** Fri Dec 18, 2015 9:11 pm

The TPMS flashing means the computer lost contact with one of the sensors. I've had it happen a few times on other cars too. The fact it is the right rear makes sense because that is the furthest from the module, which is located in the steering column. It may be you got a bad sensor and the battery is dying.

Scar0 · **Posted:** Sat Dec 19, 2015 12:54 am

ajohns1288 wrote:

The TPMS flashing means the computer lost contact with one of the sensors. I've had it happen a few times on other cars too. The fact it is the right rear makes sense because that is the furthest from the module, which is located in the steering column. It may be you got a bad sensor and the battery is dying.

Good point.
The RR is also the only wheel well without a transceiver.
There are only 3 transceivers RF, LF and LR. The fourth location of the sensor is determined by process of elimination by the WCM (wireless control module).

TPS freaking out..FML

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