Car wiring diagrams: Bmw E46 Key Circuit Board, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Video embedded BMW three button keys were not meant to be taken apart for battery replacement. If the distance to lock unlock has diminished, then this .About this Wiki. The E Wiki should be used as a tool to help all E owners. The greatest feature of the Wiki is that anyone with an account on Bimmerfest has the .E The fourth generation Series E chassis was introduced in and set the standard for engineering and performance during it's years of .