weird TPMS behavior

[astrorob]

just got a "pull over now" emergency notification on my M3P; service menu said right rear tire was at 13lbs. checking with a tire gauge revealed 42lbs after filling a little bit of air into the tire.

subsequently after getting going again the car gave a normal pressure reading for that tire.

is this a failing TPMS battery? or just a glitch? the car is just over 3 years old at this point.

 

[zoomer0056]

after filling a little bit of air into the tire.

Hmmm .... what did your tire guage say before putting air in?

 

[Kimmi]

I would guess a glitch. My G37 is 12 years old and TPMS sensors are still good.

 

[astrorob]

Hmmm .... what did your tire guage say before putting air in?

well, no idea. this is because my wife was driving and she called me, then went to a gas station to try to see what their air gauge attached to the pump might say. however, it was clearly broken (read 3lb on a tire the car was not complaining about) and so i told her not to try to put too much air into the tire. anyway there's no way she put 30-odd pounds into the tire, and i had recently topped them off to 40lb.

i told her to go park someplace and i'd go pick her up, but then she discovered i had left a tire pressure gauge in the driver's side door (which i had forgotten about). checking with that showed the aforementioned 42lb.

I would guess a glitch. My G37 is 12 years old and TPMS sensors are still good.

yeah i agree, same with my 12-year old prius. still, wondered if something like this had happened to anyone else. i tend to take the TPMS seriously since once in another prius i really did have a totally flat tire when the idiot light came on.

 

[astrorob]

LOLLLL, TPMS 2, rob 0.

the tire really was flat. i can't believe my wife actually managed to get the tire to within 2 pounds of the label without a gauge. just unbelievable.

the neighbors are doing a home renovation and their contractors must have spilled some drywall screws on the ground cause that's what i found in the tire.