No it comes on with the ignition and stays on constantly, when you hold down the button it goes off for a milisecond then is back on. Car moving or stationary, igntion only or running it makes no odds. I fear even when I get round to putting it in the dealers I wont know exactly what the fault is.
The whole way these work still confuse me, I know it is linked to ABS sensors even though the dealer tried tell me it was sensors inside the wheels.. But it makes logical sense that the car should be moving when it is set so that it can measure the rotations while the pressures are known to be correct.. Obviously I cant test this but can you set the pressure when not moving? Surely this just means that if you set the pressures then dont drive till the next day the car could have a flat tyre overnight and not know detect it.. Does this then mean that you never set the pressure but in fact just reset the warning? But that doesnt go with the instructions which I think would have you reset the TPM after you have adjusted them or changed tyres not just to clear a warning...
Oh I should mention my ABS works fine.
If i have a faulty sensor where would it be.. I would have thought since it uses abs all the TPM gizmos are actually just software based using the reading the ECU gets from the ABS measurements.. they wouldnt have 2 sensors on each wheel doing the same measurement would they? If it does purely use ABS why do I not have an ABS fault.
Sounds like the original poster has a similar prob.. Surely you could set one tyre at 10psi and another at 30 and reset the TCM and the car would happy until that pressures changed significantly therefore indicating that the inability to reset is not a tyre
problem but a gadgetry
problem?
It's all assumptions on my part but I would be interested to hear how it all plays its part.
