12 14 550 Replacing control unit (DME) (N63): Notes

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection)

Necessary preliminary tasks:

IMPORTANT: Follow instructions for removing and installing control units, see 12 00... Notes/information on removing and installing control units .

Replacement:

Carry out programming/coding
If no data can be read out from the previous control unit, carry out injection quantity adjustment (description at end of instruction).

IMPORTANT: It is absolutely essential to read out the fault memory with the BMW diagnosis system and to create a fault memory printout.

Switch off ignition.

Lever out expander rivet.

Remove gasket (1).

Release screws (2).

Feed out partition (3) and remove.

Fig 1: Identifying Gasket And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Lever out expander rivet.

Release locks in direction of arrow.

Feed out fresh-air duct (1) and remove.

Fig 2: Identifying Fresh-Air Duct

Courtesy of BMW OF NORTH AMERICA, INC.

Open retainers.

Release lock (1) in direction of arrow.

Remove cover (2).

Fig 3: Identifying Cover And Lock

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws and remove retaining bar (1).

Unlock upper section (2) of partition seal in direction of arrow and remove.

Release grommets (3) for wiring harnesses from lower section of partition seal and from electronics box.

Installation:

Make sure grommets are is correctly seated (watertightness).

Fig 4: Identifying Retaining Bar And Grommets

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) on control unit and disconnect.

Remove control unit.

Installation:

Replacement:

Note device identification number and coding.

Fig 5: Identifying Unlock Plug

Courtesy of BMW OF NORTH AMERICA, INC.