LoveBunny, it's ok to press the PSM switch, nothing will happen - unless you have it floored and are taking a 90 deg corner.
It will interject when the program determines that certain things are happening to the car ...... that shouldn't. You can go to the Porsche site or other sites and google PSM.
Try it out in a slippery location (ie. empty wet parking lot) and floor the car and turn hard at the same time. See what happens. You'll like PSM if you want to maintain control, but will want it off if you want to power drift.
On the Benz a dash icon lights up when that stability control is working. It's kind of neat to see the little light flash on and off when you lose, then gain grip again. I haven't tried this in the 987S, so I'm not sure if a little light flashes on and off too.
And hey, let your dad drive your car. He should have fun too. I've let only very close family and friends drive mine, and boy do they love it .... especially when I tell them to floor it. They thank me over and over to have a chance to drive a quick car fast and really appreciate the opportunity. And yes my wife drives the car - she knew how to drive stick before we hooked up many moons ago.
Do it, your dad would love you more for it. I know I would if my daughter let me. And yes guys, my wife and kids knows about LoveBunny.
Cheers, peace, out