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Incompetent TPMS system

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GoodWillHunt
Posts: 32
Joined: Mon Feb 02, 2026 8:37 pm

I think Kia should work on its tpms. After you've inflated the tires, the first step is to find a reset button, which can be either physical or electronic.
The ridiculous automatic reset after 5 kilometres of driving is usually ineffective. It is laborious, but over pumping and deflating work.
The front left is displaying the latest low pressure alert. Find the cold pressure reading at 34 psi. Every other tire had a pressure of 34 to 35 psi. Ignored it for two or three days, and the warning disappeared. After returning three days later, they departed once more. The warning for back left was issued a few days ago. The pressure was 35 psi.

Get the front and rear tyre pressures up to 38 psi, man.
Front and rear left pressures were 35 psi today, but a warning light indicates that front right is low at 33 psi, despite being 35 psi yesterday. A new caution label reading 33 psi has also been added to the back right.
It's almost as if it has found the difference between the two pressure readings, established a new baseline of 35 psi for the greatest reading, and then, to find the lowest value, it subtracts the difference.
THEBESTOFUS22
Posts: 13
Joined: Mon Feb 02, 2026 8:41 pm

It seems like a visit to the dealer is in order to investigate this; something is amiss. After adjusting the tyre pressures and resetting the system, the pressures on most automobiles remain steady and don't cause any problems.
Edmonston33
Posts: 49
Joined: Mon Feb 02, 2026 8:45 pm

In my understanding, the recommended pressure for your EV3 is 36 psi.
xxxMikexxx
Posts: 27
Joined: Mon Feb 02, 2026 8:41 pm

Technology that is "smart"
franchcars
Posts: 41
Joined: Mon Feb 02, 2026 8:38 pm

After seeing it reported on a Polo yesterday, I believe they are all identical. Upon returning home, I proceeded to inflate all four tires to 26 psi. pointless, heinous object. so-called "driver aids" actually end up being a nuisance.
capewell77
Posts: 32
Joined: Mon Feb 02, 2026 8:36 pm

Give it your all rather than just two.
When you're done driving, pump it up; when you leave it overnight, the pressure will decrease. That might be the case as well.
Indirect TPMS uses a sensor to monitor the speed of wheel rotation, therefore inflating a tire alters the wheel diameter; in contrast, direct TPMS (pressure shown for all wheels) does not require a reset because the valves sense the real pressure.


In all my Kias, I've only ever had one TPMS alert—and that was because of a gradual puncture.
nub1ru
Posts: 30
Joined: Mon Feb 02, 2026 8:13 pm

It may be repeating the obvious, but you should set the tyre pressures when the tires are cold. That is the starting point for the TPMS.
briantip
Posts: 24
Joined: Mon Feb 02, 2026 8:37 pm

Sunlight causes the pressure on my car's sunny side to rise in comparison to its shaded side, which in turn changes when the temperature outside does.
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