Hi serdar..Yes, it's where you initialize the system to start taking notes of your current wheel rotation speed and later comparing it to actual data.
Even if you don't get any warning messages, you may want to check the tyre pressures from time to time, and correct them if you see any inflation/deflation (for example, as small as 1 or 2 psi of difference, which would not trigger the warning message). Whenever you do that, don't forget to hit that button and reinitialise the system.
So the idea being, you first (cold tyres) get tyres to the correct psi figure -if you could tell me/ great- then hit this button?
Actually, I seem to recall (just now as I type).. that the last thing my dealer did whilst doing final checks, was he noticed a tyre warning sign on the dash. Immediately knew what it was, he reassured me (3x new tyres having just been fitted = car hadn't recognised the pressures, or something/ needed re-calibrating) & sat in driver's seat prodding the screen until warning gone >> all set, & I drove off in my "new" car.
If my photo above of the screen, is precisely where he was, then this will mean in all likelihood the tyres pressures were calibrated by him then/ only 4 months ago. And therefore I shouldn't press calibrate then, now then-?
Thanks, Zoot