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

[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.

[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.

[jimmykicker]

Originally Posted by CTScott

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.

Now I am a bit confused about that. There was no 2007 Scion xb. 2006 models ran late, and they didn't introduce the new style to 2008.

Let me see what I can find out about the wiring diagram. Shouldn't be too hard to come up with. I'l probably just buy a service manual. It's the only car I have never bought one for. Thanks.

J

[CTScott]

Originally Posted by jimmykicker

Now I am a bit confused about that. There was no 2007 Scion xb. 2006 models ran late, and they didn't introduce the new style to 2008.

Let me see what I can find out about the wiring diagram. Shouldn't be too hard to come up with. I'l probably just buy a service manual. It's the only car I have never bought one for. Thanks.

J

In the EPC I was looking at build date, so the 2007's were really 2008's for the US.