Sensitive TPM,s

[borderbilly]

My 68 plate sportage tpm,s are very sensitive, one wheel dropped 1 psi, suspect due to cold weather and threw up the dashboard warning ⚠️ light. Anyone else have the same?

 

[otherclive]

Never had that occur on any car fitted with TPMS. As the weather seasons change I adjust the pressures accordingly but 1 psi seems overly sensitive.

 

[RogerL]

My 68 plate sportage tpm,s are very sensitive, one wheel dropped 1 psi, suspect due to cold weather and threw up the dashboard warning ⚠️ light. Anyone else have the same?

It's not TPMS sensitivity - it's Boyles Law - the tyre pressure will naturally drop 1 psi for each 6 degree C drop in temperature - some places have had a 12 degree change from last week to this.

 

[Dustydog]

My VW is the same . The TPMS soon goes off as the tyres warm up. Or do as Clive suggests increase all by 1.

 

[Holiday Pursuit]

I've had a few Kia, s and the tpms are very temperament. Had to increase a few 5/6 psi to get the dashboard warning light to go off & then a few days later lower to correct pressure. Very strange indeed

 

[Sam Vimes]

My 68 plate sportage tpm,s are very sensitive, one wheel dropped 1 psi, suspect due to cold weather and threw up the dashboard warning ⚠️ light. Anyone else have the same?

What you don't state is how close to the lower limit the tyre was before the temperature dropped.

 

[birdman101]

When winter cold starts all tyres need checking whilst still cold and inflated to the correct cold pressure. Then in the menu set them. Unless it comes considerably colder no Tyre Pressure light should come on again. If they are just left at summer setting they are prone to come on until traveled some distance to warm the tyres up.

 

[Mr Plodd]

Kia dont produce their own TPMS sensors, they, like all the other manufacturers, buy them in.

 

[Dustydog]

What you don't state is how close to the lower limit the tyre was before the temperature dropped.

My fronts are 33psi per VW. Drop to 32 the warning comes on. Drive a while and back to normal.
We are told never check tyre pressures when hot🙀

 

[otherclive]

My fronts are 33psi per VW. Drop to 32 the warning comes on. Drive a while and back to normal.
We are told never check tyre pressures when hot🙀

Always do mine when the car has not been run, and there’s no sun on the tyres.

 

[Sam Vimes]

Mine are set to 33 all year round but a couple of days back the temperature was just below 2degC and the TPMS reported 31psi but no warning was set.

 

[borderbilly]

What you don't state is how close to the lower limit the tyre was before the temperature dropped.

Set at 33, front left alarmed at 32, drove 20 miles and still alarmed. Put a couple of pounds in it and it cleared.

 

[birdman101]

Then general rule for tyre pressure is 2 psi for 10 degrees differential. So if Winter temperature when cold is 10 degrees lower than the tyre cold pressure in Summer they need 2psi adding to prevent the monitor light coming on.

 

[otherclive]

Then general rule for tyre pressure is 2 psi for 10 degrees differential. So if Winter temperature when cold is 10 degrees lower than the tyre cold pressure in Summer they need 2psi adding to prevent the monitor light coming on.

I just set mine at 33psi all year around depending on weather conditions in summer or winter. Never had any spurious lights ever.