DIY - Bypassing Tire Pressure Warning System (TPWS / TPMS)

[CTScott]

Originally Posted by jimmykicker

Hey guys. I have a 2009 Scion (toyota) xb. I have had this light annyoying the bejesus out of me for 2 years....in fact since I bought it. I think the dealer didn't bother putting them back in when they installed new tires when I purchased it. Seeing the dealer was 150 miles from where I bought it, I just left the light on. Question is, does anybody know if this fix will work on my car too? Are the wires the same? Is it in the same relative location? I can't find any info on where the box is in my car. Any info is appreciated. Hate to hijack the forum as I don't own a Yaris, but this is great information and looks super easy. Thanks.

Looking at the EPC, the part number for your TPMS ECU is unique to the 07+ XB (89769-12030). I only have the 06 XB service manual, and since the TPMS wasn't added until 07, it's not covered. If you can track down the TPMS section of the service manual or at least the instrument cluster electrical wiring diagram, then I can tell you if this method will work. As far as location goes, the EPC shows a very poor representation of the location, but I think it is showing it as being behind the lower part of the C-pillar cover.