Battery in luggage compartment under spare wheel

WARNING: This page is about a different car, the 2006 BMW X5, 2005 BMW X5, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Remove spare wheel.

Release screws.

CAUTION: Do not kink air pipes.

Set air supply system (1) to one side.

Follow instructions for disconnecting and connecting battery battery.

Disconnect battery negative lead.

Fig 1: Installing Air Supply System

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Disconnect supply cable (1) for vehicle electrical system.

Installation:

Remove faulty fuses and carry out troubleshooting.

Fig 2: Disconnecting Supply Cable
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CAUTION: Pay attention to interface. The repair cable is always a standard length. The heavy-current connector of the repair cable has a larger diameter than the battery positive lead.

Lay repair cable parallel to battery positive lead.

Mark interface of battery positive lead at end of repair cable.

Fig 3: Identifying Battery Positive Lead

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Release cable ties (1)

Disconnect plug connection (2)

Fig 4: Disconnecting Plug Connection

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CAUTION: Do not use bolt cutters or similar tools to cut through the cable. A cable end that has been squashed flat will no longer fit into the clamping sleeve.

Saw through battery positive cable at marked point with an iron saw.

Fig 5: Identifying Battery Positive Cable

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Strip insulation - length (A) - from cable end.

Distance (A) = 15 mm.

Fig 6: Installing Strip

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Push heavy-current connector (1) over stripped cable end and screw into position.

Fig 7: Push Heavy-Current Connector

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Push shrink-fit hose (3) over repair cable.

Screw threaded sleeve (1) of repair cable (2) to heavy-current connector.

Fig 8: Connecting Threaded Sleeve

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Push shrink-fit hose (1) over connecting point and shrink on with a hot-air blower (2).

Fig 9: Installing Shrink-Fit Hose

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NOTE: Heat up shrink-fit hose until it has settled completely around the connection point.

Fig 10: Applying Heat On Shrink-Fit Hose

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When laying the repaired battery positive cable, observe the following:

The shrink-fit hose must not be scuffed during any movement.
The repair cable must not cause any disturbing noises during driving operation.

NOTE: Offsetting cutting line by approx. 10 cm produces excess length of battery positive lead (1). Lay battery positive lead (1) without kinks or abrasions.

Fig 11: Identifying Battery Positive Lead (Typical)

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