[Hurricane Gio]

All my tires are topped off to specs. Yes the light wont go off on the TPS.
Is there a reset that I am forgetting to check? This is the first time in 2 years I have had this go on.

thanks

 

[bajanut]

I think that I read on here somehere that sometimes it takes a few miles for it to reset.

 

[4wheeldog]

Yep......You have to drive it. As I understand it, the Subaru system checks tire rotations speeds against each other before it will reset the light.

 

[G-Omaha]

Give it about 4 or 5 miles and it will re-sync.

 

[mcbrew]

Yep......You have to drive it. As I understand it, the Subaru system checks tire rotations speeds against each other before it will reset the light.

BMW uses a system like that, but I'm pretty sure there are transmitters at each wheel in Subarus.

 

[4wheeldog]

BMW uses a system like that, but I'm pretty sure there are transmitters at each wheel in Subarus.

Schrader 20081 TPMS Sensor fits Subaru (1-pack) : Amazon.com : Automotive

Yes, Subaru uses sensors......But one system does not preclude the other. All the ECU has to see is the speed reading from all 4 ABS sensors to ascertain whether all are within parameters.

Why else would you have to drive the car to get it to reset?

 

[I call her Sheila]

Just don't misplace your TPS Cover Sheets!

 

[subiesailor]

The Range of accuracy for tire pressure gauges is pretty wide also.

I have 4 or 5 that migrate around the house and between cars and bikes etc. They can range between 2-10lbs different depending which gauges I use.

With the Subaru the TPMS light goes off nearly instantly after I have aired up the tires enough to meet the minimum spec thresh hold on the TPMS system. Pretty sure if I used the gauge that seems to always read 10lbs low and filled the tires just barely to the minimum spec that the TPMS would probably stay on in cold temps. In cold locations you need to up the pressure slightly to keep the TPMS from triggering.

 

[nipper]

Subaru Tire Pressure Monitoring System operation

see if that helps

What’s Inside: Tire Pressure Monitoring System (TPMS)

And found this

TPMS Reset Tool - Subaru Impreza WRX STI Forums: IWSTI.com

Also do you live near any, suspected or otherwise, military or otherwise facilities. Some of those are known to confuse the dickens out of TPM systems.

 

[mcbrew]

Yes, Subaru uses sensors......But one system does not preclude the other. All the ECU has to see is the speed reading from all 4 ABS sensors to ascertain whether all are within parameters.

Why else would you have to drive the car to get it to reset?

One doesn't have to preclude the other... It just happens to in this case.