61 12 001 Replacing positive battery lead (W11, W17)

CAUTION: Comply with safety regulations. Refer to AIR BAG SAFETY PRECAUTIONS .
Investigate cause of safety battery terminal being triggered.
For this purpose read fault code memory of AIRBAG control unit.
Note down fault messages stored in memory.
Rectify faults.
Then clear fault code memory.

Necessary preliminary tasks:

Disconnect battery negative terminal, refer to 12 00 Disconnecting and connecting battery
Remove rear silencer/exhaust system, refer to 18 12 030 REMOVING AND INSTALLING/REPLACING REAR MUFFLER (COOPER S) .
Remove left wheel arch trim panel, refer to 51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH LINER
Remove intake filter housing, refer to 13 71 000 REMOVING AND INSTALLING INTAKE FILTER HOUSING (COOPER S)

Left side only:

Release nut (1), screw (2) and self-tapping screw (3).

Fig 1: Removing Underbody Panelling

G03309869

Courtesy of BMW OF NORTH AMERICA, INC.

Remove underbody panelling (4).

Release nuts (2) and remove exhaust pipe bracket.

Fig 2: Detaching Heat Shield

G03309870

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 18 00 7AZ. Refer to EXHAUST SYSTEM - TIGHTENING TORQUES .

Release screws (1 and 4), nuts (3) and detach heat shield (5).

Lift up luggage compartment mat.

Fig 3: Identifying Battery Positive Terminal, SBK Connector And Rubber Grommet

G03309871

Courtesy of BMW OF NORTH AMERICA, INC.

Remove cover (1).

Release screw (2) and detach battery positive terminal.

Tightening torque 61 21 1AZ. Refer to GENERAL ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Release nut (3).

Unplug SBK connector (4).

Release clip (5).

Lift out rubber grommet (6) and pass battery positive lead through body.

Unfasten cable clip (1).

Fig 4: Unfastening Cable Clip

G03309872

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten cable clip (1).

Fig 5: Unfastening Cable Clip

G03309873

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten cable clip (1).

Fig 6: Unfastening Cable Clip

G03309874

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten cable clip (1).

Fig 7: Unfastening Cable Clip

G03309875

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten cable clip (1).

Fig 8: Unfastening Cable Clip

G03309876

Courtesy of BMW OF NORTH AMERICA, INC.

Open housing cover (1) and release nut (2).

Fig 9: Removing Housing

G03309877

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 12 42 1AZ. Refer to ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Pull cable (3) out of housing.

Remove housing (4).

Installation note:

Reset clock.

Initialize both power windows. Refer to 67 62 ... NOTES ON INITIALIZING POWER WINDOW UNIT (FRONT) .