Doors and trunk locks not working ...sometime.
My 1985 380 SL is confusing me with the locks on the doors and trunk working sometimes and other times not working. There seems to be no ryhme or reason. When I unlock the driver door with the key most times the truck will then open by pushing the trunk button other times the button will not work. After driving the car with the door unlocked the trunk button will work and sometimes it won't. Do any of you have an idea about why? Is it something to do with the vaccum pump or vacuum system? Is it something electrical? Any help would be greatly appreciated.