At what pressure does it trigger the TPMS?

[ilikerice]

wait.. i know on lexus tpws you can set the light to whatever pressure you want. for example, i could set my sensor for 40psi.. when the psi drops to around 30ish the light would come on. i know with the techstream at lexus, you can see where the sensors are set at and thier thresholds. i dont remember exactly but i thought that if your sensors were set at 32 psi. the threshold is 6-8psi up or down... i havent checked, but does the yaris have a "set" button somewhere for the light on the yaris? i know some ES350 did not have that button. but other models did

[CTScott]

Originally Posted by ilikerice

wait.. i know on lexus tpws you can set the light to whatever pressure you want. for example, i could set my sensor for 40psi.. when the psi drops to around 30ish the light would come on. i know with the techstream at lexus, you can see where the sensors are set at and thier thresholds. i dont remember exactly but i thought that if your sensors were set at 32 psi. the threshold is 6-8psi up or down... i havent checked, but does the yaris have a "set" button somewhere for the light on the yaris? i know some ES350 did not have that button. but other models did

The Yaris doesn't have a set button. It's TPWS system is quite primitive. It is the only ECU on the Yaris that is not CAN (it is ISO9141) and has no communication interface to the ECM. It is actually a completely stand-alone system and even its indicator light is an isolated circuit in the cluster.

[ilikerice]

thanks for the clearing that up for me.. very interesting..