Boomer80

I’m trying to figure out what is causing a weird vibration. I first noticed this when just before coming to a complete stop. Like the last 15 feet. But also getting the same sensation if I lift up the window switch. More noticeable if for example I lift up both front windows at the same time if they are closed. I’m guessing now that this is some kind of electrical load issue, but never experienced anything like this before.

wkearney99

When this is happening what is your battery voltage reading? You can make it one of the options on the small MFD when on the vehicle page.

http://porscheownersmanuals.com/2017...al/16/337/page
http://porscheownersmanuals.com/2017...er-status-area

Because if you're not seeing consistent voltage numbers or you notice fluctuation when your 'vibration' is happening I'd lean toward checking the alternator, belt and battery.