Had anyone ever found a fix for tpms reading incorrectly?

[denialanderror]

On two separate occasions I've had to drive with my low pressure light on when I know my tires aren't low. The first time was on a 4 hour road trip (not ideal) and currently, for the past 3 days. I use two gauges when I fill my tires. The gauge on the pump that reads a little high and a handheld that reads spot on. I've used them both extensively on different vehicles and I know how they read. I'll put 37 psi in all my tires when it's cold and the truck will not read it above 29. It only does this when the temp outside is close or below freezing. I could understand a few psi difference but it refuses to raise about 29 no matter how much air is in there. When it's warm it goes right back to normal. I know these aren't the most reliable sensors but maybe there's an easy fix out there. 

[rusty503]

Disconnect the battery for a few minutes and then connect it back up. That worked for me. I had a very similar problem with one of mine started reading about 8 - 10 psi low all the time. This lasted for a few weeks until my battery died. I charged it enough to get to the dealer. They determined that the battery was bad and replaced it. When I got back in to drive home I didn't get a low pressure warning. Sure thing, all tires were reading correctly.

[denialanderror]

Thanks, I'll unhook it for a while and see if that helps. 

[Bill336]

On 3/6/2019 at 11:23 PM, rusty503 said:

Disconnect the battery for a few minutes and then connect it back up. That worked for me. I had a very similar problem with one of mine started reading about 8 - 10 psi low all the time. This lasted for a few weeks until my battery died. I charged it enough to get to the dealer. They determined that the battery was bad and replaced it. When I got back in to drive home I didn't get a low pressure warning. Sure thing, all tires were reading correctly.

Just go ahead and get the battery checked. Dying batteries cause all sorts of problems on modern vehicles. 

 

Of course, you could go with my solution, which was to buy and older truck without so many electronics. 

[carnau]

On 3/6/2019 at 7:39 PM, denialanderror said:

On two separate occasions I've had to drive with my low pressure light on when I know my tires aren't low. The first time was on a 4 hour road trip (not ideal) and currently, for the past 3 days. I use two gauges when I fill my tires. The gauge on the pump that reads a little high and a handheld that reads spot on. I've used them both extensively on different vehicles and I know how they read. I'll put 37 psi in all my tires when it's cold and the truck will not read it above 29. It only does this when the temp outside is close or below freezing. I could understand a few psi difference but it refuses to raise about 29 no matter how much air is in there. When it's warm it goes right back to normal. I know these aren't the most reliable sensors but maybe there's an easy fix out there. 

Ok so the fix for this is to get the truck re-calibrated back to the p metric standard and the tire pressure to 35psi. Then relearn the tire pressure monitors to the vehicle.

This will take care of your issue.