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Discussion Starter · #1 ·
Saw this today on a cold morning. Why would the 1 tire get flagged as low but now the ones with lower psi...?


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I’ve seen two both low but just one flagged. I suspect it’s an artifact of the fact the TPMS sensors probably “wake up” at slightly different rates/times. If the first sensor to connect is “low”, it sets and highlights. Then the subsequent sensors can come in low and not replace the first warning. Just a guess.
 

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I've seen this before. Put it in drive and move a little bit. That will cause it to wake up and re-poll.
This.

After noticing one tire bump up 2 PSI, I hadn't driven the car for a while. I started it up to check the version update and took a peek at the pressures while the car hadn't moved for a couple of days. It was exactly how it was when I turned the car off. One tire 2 PSI higher, the rest the same. I guess it stores the pressures from when last left.
 

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Discussion Starter · #5 ·
Second pic is after driving 15 miles. Strange. I'll air them up later.

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I had the same thing happen the other day. And then even after putting air in all four tires, only two of the sensors adjusted. Had to drive a couples miles and then they seemed to get themselves sorted out.
 

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Second pic is after driving 15 miles. Strange. I'll air them up later.

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The rears are programmed for 35 PSI. The fronts are programmed for 32 PSI. They are not set to go off just under those pressures, but around 20% lower threshold. Can’t explain the right rear vs left rear.
 

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The rears are programmed for 35 PSI. The fronts are programmed for 32 PSI. They are not set to go off just under those pressures, but around 20% lower threshold. Can’t explain the right rear vs left rear.
You might want to check those numbers....on the Quad :

FRONTS = 35 psi

REARS = 32 psi
 

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Be sure to check all the tires with a real pressure gauge. The TPMS is not very accurate.
 

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I agree with racerz. Especially dont trust gas station gauges. They can vary from station to station. Use a real one if u werent already. It took me a couple days to figure out that was my issue when i first got the car
 
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