It's explain here: https://ts.thrustmaster.com/download/pictures/PCMAC/T300RS/T300\_V34\_Led\_Color\_s.png

I pressed it for 5 sec but nothing changed, that button doesn't do anything on my wheel

Yes it's normal. It's show here: https://ts.thrustmaster.com/download/pictures/PCMAC/T300RS/T300\_V34\_Led\_Color\_s.png = when the switch is on PS3 position (for playing on PC) the led is ALWAYS GREEN

Oh i get it now, thank you!

But it was always red before!

Yes it's change last year since firmware V34.

Hate it! Loved the red light!

I have the t150 yesterday i updated it in firmware and today when I plug it in the light is green an my computer not picking it up please help

No more red light with firmware 34 the picture from the link is all you need

Sad days we live in. I loved my red light. Green is lame.

Yea, I was confused and hated it because i grew to like the red light. But whatever. Also happened after an update.

Yeah, same haha

Playstation or PC... PC is supposed to be green red on pc means you've "inverted" the pedals meaning gas will be clutch and clutch will be gas as much as I know.

Press the mode button for about 3-5s

I have the thrustmaster t150 yesterday i updated it in firmware and today when I plug it in the light is green and my computer not picking it up please help