[DeeK]

I just installed new battery and now the CAL light is on and the tire pressure readings are not showing.I didn't notice anything else not working but there could be other stuff I haven't found.
I assume this has been covered here but a search didn't turn anything up. What can I do? Does this have to go to the dealer to be recalibrated or is there some nice cheat that would work to get things back to normal?

 

[DeeK]

Follow-up: after about 20 minutes of driving the tire pressures started working again.

 

[6speedTi]

I had this happen on my 2019. If you disconnect the battery for a certain amount of time the tire pressure display shows dashes on all positions after you reconnect battery power. Once you start driving and wake up the sensors then the computer does its thing and you're back to normal. This process is probably helpful if you have some weird stuff going on with your display readings but I doubt it recalibrates your sensors. It just picks up the signal again from each tpms sensor.

 

[bigoilbob]

I just installed new battery and now the CAL light is on and the tire pressure readings are not showing.I didn't notice anything else not working but there could be other stuff I haven't found.
I assume this has been covered here but a search didn't turn anything up. What can I do? Does this have to go to the dealer to be recalibrated or is there some nice cheat that would work to get things back to normal?

Very helpful post/thread. We're all going to be doing this sooner or later, and then later than that, and then.....

 

[DeeK]

Fwiw, I bought a $13 took on Amazon that redoes the sensors. After many tire rotations it never occurred to me that if you don't do this each time the tire sensors don't match the dic. I will start doing that now.

 

[SFLTruck]

Very helpful post/thread. We're all going to be doing this sooner or later, and then later than that, and then.....

Bob, when you replace the battery the PSI will come back after you drive for a half hour or so. To conserve battery the TPMS sensors don't transmit very often. Only if they see a rapid pressure change will they transmit right away. The dash only remembers the tire pressure from the last received signal so when you replace the battery the last signal is basically zero until they transmit again. Just drive it it will come back on it's own.

These type of things should be the "Oh By The Way" things that should be listed in the user manual......