Hi, Joey From Pearland Texas here!
We have a 2013 Cayenne Turbo.
I am not sure if I am the only one to have to deal with this but every now and again my 2013 cayenne TT brake pedal / brakes acts funny.
it seems like it is being pressed/engaged, and the car definitely acts like the breaks are being pressed enough to where the car won't roll forward or backward in idle when in gear, but not too much to stop motion at all. It also won't shift out of 1st gear when the brake is being pressed unless manually shifted.

This seems to mainly happen when its very hot out and the car has been sitting for a bit.

We live in houston and it's been hot (hot Is an understatement) lately, so just wanting to see why it would be doing this, and hopefully someone else has seen this issue and has a solution or remedy.

I just dont know where to start, as the brakes work fine when it's not doing this, and I can't exactly pinpoint the exact situation to when it happens besides when it's hot inside the car and outside.
Hopefully someone here can help?
Anyone know anything about this?
I see this website, but dont know how legit it is and can't find anything else anywhere about this.

https://pmmonline.co.uk/technical/porsche-cayenne-brake-pedal-not-returning-when-ambient-air-temperature-is-high-autodocta/