low tire sensor help-TPMS

[kntr]

Is there a way to reprogram the TPMS to a lower pressure or turn it off on the 08 Rubi?

[AEV Jordan]

Nope. Government regulated for 2008. There is no defeat.

I don't remember the pressure on and hysteresis for JK off the top of my head, but what is the problem you are having with it ?

What psi do you notice is coming on ?

Is it beeping at you once, now and then, or continuously ?

Are you driving in 2WD, 4WD, and/or 4Lo ?

[JeepinJon]

Is it possible to reflash the TPMS to cfome on at a lower pressure (like 28psi)? Once you get 37" tires on a Jeep not many people tend to run them at the higher PSI.

[kntr]

Is it possible to reflash the TPMS to cfome on at a lower pressure (like 28psi)? Once you get 37" tires on a Jeep not many people tend to run them at the higher PSI.

This is why I ask too.

[AEV Dave]

We're looking into it.

dh

[lightning]

We're looking into it.

dh
And as a side note to sidestep some of the legalities. Why not have the pressure threshold at a lower level only when the transfer case is in 4LO and / or speed is less than 20-30mph.

[AEV Jordan]

It was my understanding that JK's don't beep at you in 4Low. The threshold is the same and the TPM lamp is lit, just no audible chimp.

[paragon]

The threshold is supposed to be 25%, which would be below 30psi.

But the regs do allow for recalibrating (according to the NHTSA) for adding aftermarket tires and wheels. That's supposed to be regardless of tire size. Any company can allow for recalibration (again according to the NHTSA) when adding different sized tires.

A shop though, cannot completely disable the system. From the NHTSA:


We do not believe it is appropriate to permit disablement of the MIL (malfunction indicator lamp) when aftermarket tires and rims are installed on the vehicle that are not compatible with the continued proper functioning of the TPMS. In such cases, the TPMS MIL is performing its intended function. We believe that the MIL should continue to operate when tires and rims that are incompatible with the TPMS are mounted on the vehicle, not only to discourage such actions, but also to provide an ongoing reminder that the TPMS is unavailable to provide low tire pressure warnings.

After first retail sale of the vehicle, we do not believe that installing aftermarket tires and wheels necessarily makes the TPMS ‘inoperable.’ However, the MIL cannot be disabled. If the vehicle owner so desires, the vehicle could be taken to a dealer that has the replacement parts and tools necessary to repair and calibrate the TPMS system