BMW X5: General Information On Intelligent Battery Sensor (IBS)

WARNING: Danger of destruction in event of mechanical strain

• Do not introduce any additional connections at the battery negative terminal.
• Do not modify the grounding cable.

  The grounding cable also serves to dissipate heat.

• Do not establish any connection between the IBS and the sensor screw.
• Do not use force when disconnecting the pole shoe from the battery terminal:
  • Do not pull on the grounding cable.
  • Do not place any tools under the IBS to lever off the pole shoe.
• Do not use IBS connections as levers.
• Use a torque wrench and set tightening torque in accordance with repair instructions.
• Do not release or tighten down sensor screw (screw with Torx head).
• Avoid contact between IBS and ground.

WARNING: Danger of destruction to IBS and cables when battery is replaced

NOTE: Battery draining possible in spite of the intelligent battery sensor IBS being fault-free.

• A battery can be drained (e.g. with lights or radio switched on) even when the IBS functions perfectly in conjunction with power management.
• For this reason, only replace the IBS when a corresponding fault is entered in the DME or DDE.

OPENING PLUG HOUSINGS AND REMOVING CONTACTS OF DIFFERENT PLUG SYSTEMS

Special tools required:

• 61 0 300
• 61 0 400
• 61 1 150

Abbreviations and what they mean:

ABBREVIATIONS MEANINGS

Ultrasonic-welded connectors:

Ultrasonic-welded connectors (1) can be identified by the welds (2) on their longitudinal side.

The contacts of these connectors cannot be replaced. Replace plug completely.

Fig. 3: Identifying Ultrasonic-Welded Connectors

NOTE: Special tools referred to in the repair instructions below are contained in the following special tool kits:

Release and press-out tool 61 1 150

Replaced as from 09/2005 by: 61 0 300

61 0 400

Repair instructions for opening plug housings and removing contacts of different plug systems

For plug contact systems not listed, refer to appropriate Service Information.

Plug system D 1.5/D 2.5:

• Circular plugs, 7 -, 8-pin, System D 2.5
• Circular plugs, 13-pin, System D 2.5
• Circular plugs, 20-pin, System D 2.5
• Circular plugs, 4 -, 7-, 10 -, 12 -, 25-pin, System D 1.5/D 2.5
• In-line plugs, 15-pin, System D 2.5
• In-line plugs, 8-, 12-pin, System D 2.5
• In-line plugs, 30-pin, System D 2.5
• In-line plugs, 20-pin, System D 2.5

Plug system JPT/MDK/DFK:

• In-line plugs, 2-pin, System JPT ELA
• In-line plugs, 2-pin, System MDK 3plus 2.8
• In-line plugs, 4-pin, System DFK ELA

Plug system Elo/Elo-Power:

• In-line plugs, 4-, 10-pin, System Elo
• In-line plugs, 6-to 50-pin, System Elo
• In-line plugs, 3-, 6-pin, System Elo-Power 2.8

Plug system MQS/MPQ:

• In-line plugs, 6-, 8-pin, System MQS
• In-line plugs, 2-pin, System MPQ 2.8
• Control unit plugs, 25-, 35-, 55-, 83-, 88-pin
• In-line plugs, 24-pin, Hybrid System MQS/MPQ
• Socket housing 42-, 43-pin, Hybrid System MQS / MPQ
• Socket housings 2x21-, 2x27-pin, Hybrid System MQS/MPQ, Elo/Elo-Power
• In-line plugs, 30-pin, Hybrid System MQS/MPQ
• Socket housings, 5-, 8-pin, System MQS/MPQ
• Socket housing (radio plug), Hybrid System MQS/MPQ

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