That is wierd it should say power on the dash if there is a power button. Power is the sport mode for non skyhook cars. I would guess somewhere down the line the switch pack was replaced with the wrong part. I am guessing you have a skyhook car.The button on my '03 Coupe says PWR, but when I push it, a light on the dash cluster says SPORT. So what do you think, Skyhook or not? I suppose I could try and track down the original sticker to find out for sure.
http://www.eurospares.co.uk/partTable.asp?M=3&Mo=384&A=1&B=20505&S=I will say the chassis seems to tighten up when I push this button and the road feel seems keener, but that may be all in my imagination. Anyone know a way to check for sure? Some part of the suspension that is a dead giveaway I can look at?