12 14 550 Replacing control unit box (N47 D20 O 1 with SCR)

IMPORTANT: Read and comply with NOTES on protection against electrostatic discharge (ESD protection).

Necessary preliminary tasks:

IMPORTANT: FOLLOW instructions for removing and installing control units

Partially loosen the rear gasket (1) for the engine compartment lid until the screw is accessible from the cover of the electronics box.

Release all screws along line (2).

Tightening torque: 12 90 1AZ .

Remove the electronics box lid (3).

Fig 1: Identifying Rear Gasket, Line And Electronics Box Lid

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen all connectors and relay carriers (1) from the electronics box and set aside.

Installation note:

Make sure rubber grommets are correctly fitted (watertightness).

Fig 2: Identifying Relay Carriers

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque: 12 90 2AZ .

Pull the electronics box from the rubber grommet and remove through the top.

Fig 3: Identifying Screws, Electronics Box And Rubber Grommet

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault message.
Clear diagnostic fault entries from fault memory.