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How to Disable the TPMS Light!

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9K views 11 replies 3 participants last post by  jay.crisologo  
#1 · (Edited)
SPOILER: Scroll to the end for my conclusions so far!

I've been looking and can't find this info anywhere so far.

In my 2009 Outback, does anyone know if the TPMS light goes through the car's computer and could somehow be disabled in the computer?

I'm thinking no.

Does anyone know where the schematics are for the TPMS that would show some of this info?

Is the TPMS module under the driver's seat somewhere?

Thank you!

Lee
 
#4 ·
So here's some circuit information. PIN 2 is the output for the stupid light. PIN 7 / #7 is the instrument cluster. What is #10 (The "Body Integrated Unit?" ) Could it be as simple as cutting the wire to PIN 2? Is PIN 2 12 volts, or a grounding out, or something else? This Subaru Select Monitor that attaches to PIN 9, is that a tool that among other functions can program TPMS sensors? I'm thinking PIN 9 is serial data? This module is under the front seat. Wire color for PIN 2?
 

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#8 ·
So, this is what I found out tonight about the "body integrated unit,"

"The Body Integrated Unit seems to be a secondary computer of sorts to the ECM. It controls things like the air climate control, windshield wipers, power windows, immobilizer, display gauges - essentially, everything electrical that doesn't directly control the engine."

I've been thinking, there must be some kind of connection between the TPMS module and the OBDII connector, perhaps with the body integrated unit (BIU) as an intermediary. Because I know you hook tools up to the OBDII connector to read and write the TPMS sensor codes.

Also wondering if the Subaru dealers still use this "Subaru Select Monitor," or if they use newer non-Subaru tools to talk to the OBDII connector instead?

Still wondering if the BIU would react if I just unplugged the TPMS module, or if it would be better and safer to just cut the wire coming from PIN 2 to the stupid light? LOL

I'm on a quest! haha