TPMS - what is the threshold for it to come on?

[tkubik]

At what point does the TPMS on the EX-L I4 Sedan come on? i heard somewhere that they usually wait for a 30% deflation which seems like quite a big threshold.

[Demonik]

yeah that seems a bit much.... i think somewhere it was said that at ~ 2-3 psi drop is when it comes on

all i know is that it has been 4300 miles/3 months and I have only check the tire pressure once (last month) and it was exactly at 32....im not sure how it hasnt gone down even 1 psi, but im happy.

[clewttu]

"significantly deflated" per the manual
My Touareg's was almost 10 PSI