61 12 004 Replacing battery positive lead (from battery to engine compartment partition connector)

WARNING: This page is about a different car, the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, and 2007 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe safety instructions for handling vehicle battery, see 61 00 ... Safety instructions for handling vehicle battery

Necessary preliminary tasks:

Remove right luggage compartment wheel arch trim, see 51 47 161 REMOVING AND INSTALLING/REPLACING RIGHT LUGGAGE COMPARTMENT WHEEL ARCH TRIM
Remove instrument panel trim, see 51 45 030 REMOVING AND INSTALLING INSTRUMENT PANEL TRIM
Remove right front seat, see 52 13 015 REMOVING AND INSTALLING / REPLACING CONTROLS ON LEFT / RIGHT FRONT SEAT (NORMAL / MANUAL)
Remove central bass cover, see 65 12 050 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT CENTRAL BASS SPEAKER (UNDER FRONT SEAT)
Remove panel for door pillar on right, see 51 43 150 REMOVING AND INSTALLING OR REPLACING TRIM FOR LEFT OR RIGHT DOOR PILLAR (BOTTOM)

Unfasten plug connection (2) and disconnect.

Disconnect battery negative lead (1), see 61 20 900 Disconnecting and connecting battery negative lead .

Open positive terminal cover (3).

Fig 1: Identifying Plug Connection

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Release nut (3), tightening torque: 61 12 1AZ, see 61 12 AUXILIARY CABLES/LEADS .

Disconnect lead (4).

Release nut (1) of safety battery terminal (2), tightening torque: 61 21 1AZ, see 61 12 AUXILIARY CABLES/LEADS .

IMPORTANT: Do not under any circumstances pull/lever safety battery terminal (2) off by force.

Detach safety battery terminal (2) towards top, lay to one side and secure.

Fig 2: Identifying Battery Terminal And Nut

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Lever out covers (1) and remove.

Unfasten screws (2).

Lift out rail (3).

Fig 3: Lifting Out Rail

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IMPORTANT: Do not kink floor panelling under any circumstances!

Cut and fold back floor panelling (1) in area (2).

Installation:

Cut into floor panelling (2) at marked points. Join cutting lines with cable straps (short).

Fig 4: Folding Back Floor Panelling

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Unlock cable lug mounting (1) and fold back.

Release screw (2), tightening torque: 61 12 2AZ, see 61 12 AUXILIARY CABLES/LEADS .

Unclip cable lug mounting (1) from positive battery cable (3) and remove.

WARNING: Risk of short circuits!
When installing, ensure:

Correct seating of cable lug mounting (1) on positive battery cable (3)
Correct screw connection

Fig 5: Identifying Cable Lug Mounting And Screw

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NOTE: For purposes of clarity, the following illustrations show the front/rear floor panelling removed.

Raise front/rear floor panelling in area of battery positive lead.

Remove front insert (1).

Fig 6: Identifying Front Insert

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Remove battery positive lead (1) from cable guides (2).

Fig 7: Identifying Battery Lead And Cable Guides

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Detach battery positive lead (1) from cable guides (2) and remove.

Fig 8: Identifying Battery Lead And Cable Guides

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