New TPMS sensor reads high
Thread Starter
Burning Brakes
Joined: Dec 2006
Posts: 1,109
Likes: 1
From: Clayton CA
New TPMS sensor reads high
I just replaced my wheels/tires with Cray Scorpions and Nitto Invos along with new tire pressure sensors. The rear passenger sensor reads about 10 PSI high. Double checked with a couple tire pressure gauges. It does have the proper 30-32 PSI air in it but the DIC always reads 40ish PSI.
Assuming the sensor is not defective, would it have to be retrained? I also was told that deflating and reinflating the tire would fix it; perhaps some of the soap, etc. used in putting the tire on the wheel came in contact with the sensor.
Assuming the sensor is not defective, would it have to be retrained? I also was told that deflating and reinflating the tire would fix it; perhaps some of the soap, etc. used in putting the tire on the wheel came in contact with the sensor.
Team Owner
Joined: Jul 2006
Posts: 22,152
Likes: 4,165
From: Kannapolis NC
Make sure all the tires read the correct pressure. It's possible that the sensors were trained in the wrong order and the tire you're checking is not the one that's too high. Just checking the easy stuff first.
Instructor
Joined: Feb 2007
Posts: 115
Likes: 9
From: Tampa FL
bad sensors
I'm fairly confident that there was a bad batch of sensors (or re-purposed sensors) a year or two ago. I bought a some that read incorrectly - some high, some low - and kept reprogramming and swapping them out with replacements. In total, I think I got six sensors - all bad - off ebay. The swapped a few times, sending back the bad units for replacement, but then he skipped town. I still got a refund thanks to Paypal.
The good news is that I figured a way to swap sensors w/o removing the tire. Evacuate all the air in the tire, lay the wheel/tire flat - tire valve up, spray soapy water around the bead, walk on top of the tire and use a 1"x2" stick of wood plus hammer to work around the tire until it releases and collapses from the top bead. Patience and a little more soap spray helps. Once the bead releases, jam the wood between the bead and the wheel using the stick as leverage to gain access to the TPMS inside the wheel. By only releasing the top bead, you don't have to balance the wheel again.
This handyman TPMS swap isn't for everybody. It's for those looking to save a buck -- and improve their vocabulary of expletives.
Dave
The good news is that I figured a way to swap sensors w/o removing the tire. Evacuate all the air in the tire, lay the wheel/tire flat - tire valve up, spray soapy water around the bead, walk on top of the tire and use a 1"x2" stick of wood plus hammer to work around the tire until it releases and collapses from the top bead. Patience and a little more soap spray helps. Once the bead releases, jam the wood between the bead and the wheel using the stick as leverage to gain access to the TPMS inside the wheel. By only releasing the top bead, you don't have to balance the wheel again.
This handyman TPMS swap isn't for everybody. It's for those looking to save a buck -- and improve their vocabulary of expletives.
Dave
Thread Starter
Burning Brakes
Joined: Dec 2006
Posts: 1,109
Likes: 1
From: Clayton CA
Thanks for the input. Actually, purchased and got the sensors installed at America's Tire, so will leave remedy up to them. Was hoping to have an idea of what is going on before taking the car in. It still reads about 10 psi high and sets off the DIC 'high tire pressure' warning message. Will keep resetting until I can get the car back in to their shop. Am still monitoring the tire with a gauge. It reads the correct 30-32 psi pressure so will assume the issue is with the sensor.
