Originally Posted by HRoi
Interesting, because IME the door close button always works. You don't have to use it because yes, if you do nothing the door will eventually close and you're on your way...but if you want it to go faster, hit the button
Huh, apparently this came up on reddit just today:
People who say they are elevator techs on there are now claiming it works, but there are citations to other techs that say it does nothing when the car is not in firefighter mode. My guess is that the truth is somewhere in the middle...some of the buttons do nothing (or take so long to activate that its like they do nothing) in normal operation while others are very functional.
The most convincing thing I've seen on there is that it works once someone has broken the plane of the optical sensors...the elevator knows that someone has come or gone and thus thinks it is ok to let you close the door early.
I work for an elevator company. The door close button can close the doors quicker or not, depending on how the customer wants it. The most important purpose of the door close button is for when it's placed on independent service, which is the setting used for things like move-ins, etc. On independent service the doors will remain open until the door close button is held in, therefore giving you time to move everything in without having to worry about someone else calling the elevator.