Low Tire Pressure Sensor

[DebbyM46227]

Thanks, Shroomster....it was a stick air gauge - I'll have to get one of those you are talking about - digital sounds good! I've always had the stick kind and didn't know there were other types.

I aired up all my tires and the low pressure light went off, so I guess they were all low. Or at least one of them since I couldn't tell which it was. I looked at the dashboard each time I aired one up, and it didn't go off until I did the last tire.

[bobolinko]

Originally Posted by DebbyM46227

I couldn't tell which it was. I looked at the dashboard each time I aired one up, and it didn't go off until I did the last tire.

It takes a little while for the TPMS to recognize that the air pressure is back to acceptable levels. Sometimes you will actually have to MOVE the car in order to initialize the reset. I have also had to revert to the button reset method on 2 occasions, as it would not reset by itself. The button method:

Press and hold in the TPMS Reset button and then turn the key to the engine run position, wait a few seconds and the light should go out. If ALL the wheels show correct pressure, an it still illuminates the (!) driving a short distance usually resets in about 2 blocks of travel. (It's a pain eh?)

[Shroomster]

Originally Posted by bobolinko

It takes a little while for the TPMS to recognize that the air pressure is back to acceptable levels. Sometimes you will actually have to MOVE the car in order to initialize the reset. I have also had to revert to the button reset method on 2 occasions, as it would not reset by itself. The button method:

Press and hold in the TPMS Reset button and then turn the key to the engine run position, wait a few seconds and the light should go out. If ALL the wheels show correct pressure, an it still illuminates the (!) driving a short distance usually resets in about 2 blocks of travel. (It's a pain eh?)

Unless your model year scion has this, toyota and all manufacturers have non physical interfaces for the tpms now. Most can only be accessed through the DLC or an onboard procedure.

[stschaub]

On a 2009 3-door, where's the reset switch?

[CTScott]

Originally Posted by stschaub

On a 2009 3-door, where's the reset switch?

It doesn't have a physical switch. It can only be manually reset using the Toyota Techstream tool:

3. CLEAR DTC
After repairing the malfunctions, clear the DTCs.
(a) Turn the ignition switch off.
(b) Connect a Techstream to the DLC3.
(c) Turn the ignition switch to ON and the tester on.
(d) Enter the following menus: Chassis / Tire Pressure Monitor / Trouble Codes /
(e) Clear the DTCs following the prompts on the tester screen