Tpms On New Gs And Winter Wheels

[Silver Arrow]

So I finally got my winter wheels and tyres on. The wheels are from a Gen 3 GS300SE-L (and they don't look too bad at all).

The problem is this:

I had read the manual before changing the wheels over, but assumed that the TPMS system would be on Premier and F Sport only - but it appears mine has it too. The manual does not say it's a standard item - but mentions that it only applies to certain models.

Anyway, I now have the annoying little yellow light on the dash.

Does anyone know if this can be switched off? The winter wheels just have a regular valve and I am pretty sure that standard 18"s on the car had regular valves too? Is this like a BMW system where the ABS sensors are used to monitor "wheel drag" or is it a module attached to the inside of the rim somewhere?? I know where the TPMS resetr button is, but I'm also scared that if it a transponder system then when the summers go back on Lexus will charge me to re-synch.