BMW X5: Battery Vapor Separator

REPLACING BATTERY NEGATIVE LEAD

WARNING: Observe safety instructions for handling vehicle battery.

Follow instructions for disconnecting and connecting battery.

IMPORTANT: Do not under any circumstances use force to pull/lever off Intelligent Battery Sensor (IBS).

Necessary preliminary tasks:

• Raise luggage compartment floor trim

Release screws (1).

Remove battery cover (2) upwards.

Fig. 157: Identifying Battery Cover

Loosen nut (1).

Tightening torque.

Remove battery negative lead with IBS.

Disconnect plug connection (2).

Unscrew nut (3).

Tightening torque.

Fig. 158: Identifying Plug Connection

DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD

WARNING: Observe safety instructions for handling vehicle battery.

Follow instructions for disconnecting and connecting battery.

IMPORTANT: Do not under any circumstances use force to pull/lever off Intelligent Battery Sensor (IBS).

Necessary preliminary tasks:

• Raise luggage compartment floor trim

Release screws (1).

Remove battery cover (2) upwards.

Fig. 159: Identifying Battery Cover

Loosen nut (1).

Tightening torque.

Disconnect battery negative lead (2) with IBS and secure at side.

Fig. 160: Identifying Battery Negative Lead

PERFORMING BATTERY "POWER RESET" (FOR PROGRAMMING/CODING CONTROL UNIT(S) )

IMPORTANT: Observe safety instructions for handling vehicle battery.

The following steps must be carried out for a "power reset":

• Switch off and disconnect battery charger
• Switch off ignition
  Cars with ignition key: Turn ignition key to 0 position
  Cars with identification sensor: Remove identification sensor from slot
  Cars with comfort access system: Make sure terminal is in 0 position
• Disconnect battery negative terminal
• Reconnect battery negative terminal (to ensure bus activity)
• Waiting time (5-10 seconds)
• Disconnect battery negative terminal
• Waiting time (1 minute)
• Connect battery negative terminal and tighten, tightening torque.
  Tightening torque.
• Connect and switch on battery charger
• Switch ignition on

REMOVING AND INSTALLING/REPLACING BATTERY

WARNING: Observe safety instructions for handling vehicle battery.

Notes and instructions on Intelligent Battery Sensor IBS.

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

Necessary preliminary tasks:

• Disconnect negative battery cable.
• Remove distribution box.

Detach vent (1) in direction of arrow.

Unlock positive terminal cover (2).

Slacken nut (3) of safety battery terminal.

Tightening torque.

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

Release threaded pin (4).

Release screw (6) and remove holder.

Release screw (5) and remove holder.

Lift out battery.

Fig. 161: Detaching Vent

Installation:

Make sure battery is correctly seated in associated fixture.

Replacement:

Version with Intelligent Battery Sensor:

• Carry out programming/coding. Code Car Access System (CAS) and delete fault memory entries relating to battery replacement in engine control unit.

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