Tyre pressure monitor question

[maxxo]

How does this work? I pumped up my tyres to 2.7 bar around 4 months ago. I hit the tpm reset. Today the pressure was 1.8 bar. When is it supposed to warn me?

[POW]

I pumped mine to 36psi and 10 days later the light come on and i check it read 31psi on one of the trye.so i guess roughly 15% change?

[maxxo]

Does the light stay on or only go when you start the car? My warning light was not on.

[POW]

The light stay on until u reset it by long press the button in glove box.

[POW]

May be ur tpm havent set yet,thats why not light up.owner manual have a section to explain how it works

[buzuki]

it uses wheel speed to determine a tyre with lower pressure, assuming all 4 tyres had lost equal pressure the system may have just thought everything is ok as wheel speed on all wheels is still identical.