TPMS question
Thread Starter
Senior Member
Joined: Jul 2008
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From: IOWA
SHO4CY,
Having different size tires and/or tire pressures than specified on the OE placard in the door jam. Your TPMs light will come on if the tire pressures are low, as well as, when over-inflated. In other words, your TPMs sensors may actually be working and your tires may be over-inflated (according to your TPMs sensor). The light may come on because of the parameters the tpms sensors were program to the OEM tire. For example, the tpms sensor was programmed to turn on the light if the tire are below 25 psi or if the tire is above 45psi.
I would check you placard to see what your tires psi should be. Also a side note, your tire pressure can go up when you drive, that is probably why your light did not come on right away, until your tire heated up and rose the psi to over the parameters.
Having different size tires and/or tire pressures than specified on the OE placard in the door jam. Your TPMs light will come on if the tire pressures are low, as well as, when over-inflated. In other words, your TPMs sensors may actually be working and your tires may be over-inflated (according to your TPMs sensor). The light may come on because of the parameters the tpms sensors were program to the OEM tire. For example, the tpms sensor was programmed to turn on the light if the tire are below 25 psi or if the tire is above 45psi.
I would check you placard to see what your tires psi should be. Also a side note, your tire pressure can go up when you drive, that is probably why your light did not come on right away, until your tire heated up and rose the psi to over the parameters.
Thread Starter
Senior Member
Joined: Jul 2008
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From: IOWA
UPDATE: So it turns out the Raptor rims/tires did not have any sensors on them. Go figure. I got my new sensors installed at the local shop, and everything is kosher now. All sensors reading, no error message. You can find some good deals on wheel sensors on Ebay. I was able to pick up used OEM sensors with new valve stems for less than $60 bucks for all four. There were other generic aftermarket sensors that were slightly cheaper, but I thought I'd rather have used OEM ones. Definiley way better than spending $52 per sensor for new ones. As an FYI, the local shop would charge me $100 per tire to purchase sensors through them and have them installed. Saved quite a bit buying my own sensors.
Senior Member
Joined: Apr 2018
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From: Clarksburg, WV
When I put my new wheels and tires on recently, I had a spare set of TPMS sensors from some '15-17 Mustang wheels that I bought for my car, so I had the tire shop put those in when they mounted the tires and wheels. I never even got so much as a TPMS warning light after leaving my house the first time I drove it and still haven't seen anything come up, so that was cool.
Senior Member
Joined: Dec 2013
Posts: 14,975
Likes: 6,035
From: SE Michigan
UPDATE: So it turns out the Raptor rims/tires did not have any sensors on them. Go figure. I got my new sensors installed at the local shop, and everything is kosher now. All sensors reading, no error message. You can find some good deals on wheel sensors on Ebay. I was able to pick up used OEM sensors with new valve stems for less than $60 bucks for all four. There were other generic aftermarket sensors that were slightly cheaper, but I thought I'd rather have used OEM ones. Definiley way better than spending $52 per sensor for new ones. As an FYI, the local shop would charge me $100 per tire to purchase sensors through them and have them installed. Saved quite a bit buying my own sensors.
The seller lied to you.
Used sensors can be had for a great price. Of course the battery made die in them and you'll need a rebuild kit at that point.
Thread Starter
Senior Member
Joined: Jul 2008
Posts: 749
Likes: 197
From: IOWA
True enough. At least I purchased them at a steal and having to spend a couple hundred extra bucks I'm still well money ahead. Sucks though. Yeah, a gamble being used for sure. I just viewed it as less of a gamble then brand new generic sensors that would only save me $10 - $15 bucks total.
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Joined: Sep 2019
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Auto-learn procedure requires the vehicle to be driven over 20 kp/h for 10-20 minutes to learn.