My understanding is that it’s related to the frameless glass on the doors, it needs to roll the windows down a smidgen to clear the water seal on the door frame, so you press the button which tells the computer to roll the window down a couple of mm then actuate the door.
Every coupe has had this feature for 40 years, before they had electric windows, even. You just dip the window as the door latch actuates, whether the window is electrically or mechanically hooked to the door handle.
I have one of those cars in my garage with a fully mechanical door handle, with a mechanical lock for the key and everything.
My understanding is that it’s related to the frameless glass on the doors, it needs to roll the windows down a smidgen to clear the water seal on the door frame, so you press the button which tells the computer to roll the window down a couple of mm then actuate the door.
Every coupe has had this feature for 40 years, before they had electric windows, even. You just dip the window as the door latch actuates, whether the window is electrically or mechanically hooked to the door handle.
I have one of those cars in my garage with a fully mechanical door handle, with a mechanical lock for the key and everything.