This is the built-in automatic service reminder that was started in 1991.
OK ... that was a joke ....
Is it a stock car or does it have an added keyless remote system?
I have a friend who had experienced his system opening and closing on its own. It was an aftermarket system.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)