BMW 7 Series: Replacing Battery Negative Lead
WARNING: Observe (SAFETY) INFORMATION ON AGM BATTERY and follow INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY.
Read and comply with notes and instructions on INTELLIGENT BATTERY SENSOR.
Necessary preliminary tasks
- Clamp off BATTERY NEGATIVE LEAD
- Remove LUGGAGE COMPARTMENT STORAGE COMPARTMENT
Slacken nut (1) on negative battery terminal.
Tightening torque 61 21 1AZ.
IMPORTANT: Do not under any circumstances use force to pull off negative terminal.
Detach battery negative lead with intelligent battery sensor (IBS) in upward direction, lay to one side and secure.
Disconnect plug connection (2).
Release nut (3) and battery negative lead (4).
Tightening torque 61 21 6AZ.
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Fig. 24: Identifying Battery With Nut, Plug Connection And Negative Lead
REPLACING POSITIVE BATTERY CABLE (FROM BATTERY TO LUGGAGE COMPARTMENT CABLE CONNECTOR)
WARNING: Observe SAFETY INSTRUCTIONS for handling vehicle battery.
Necessary preliminary work
- Clamp off BATTERY NEGATIVE LEAD
If necessary, unlock and disconnect plug connection (1) of safety battery terminal lead.
IMPORTANT: Do not under any circumstances pull/lever off safety battery terminal (1) by force.
Loosen nut (2).
Tightening torque 61 21 1AZ.
Unscrew nut (3).
Tightening torque 61 21 2AZ.
Slacken nut (4).
Tightening torque 61 21 4AZ.
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Fig. 25: Raising Power Distribution Box
Unclip locking brackets from power distribution box (5) in direction of arrow.
Raise power distribution box (5) in direction of arrow and remove positive battery cable (6).
REPLACING WIRING HARNESS FOR FRONT BUMPER
IMPORTANT: Read and comply with notes on HANDLING WIRING HARNESSES and cables.
Necessary preliminary tasks
- Remove FRONT BUMPER TRIM.
Disconnect plug connections (1) on five ultrasonic transducers.
Unclip wiring harness (2) from bumper trim.
Remove wiring harness (2).
Remove PDC.
Installation: Make sure wiring harness (2) is laid correctly.
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Fig. 26: Identifying Ultrasonic Transducer Plug Connections And Wiring
Harness
READ NEXT:
Replacing Wiring Harness In Left Or Right Front Door
IMPORTANT: Read and comply with notes on HANDLING WIRING HARNESSES and
cables.
Necessary preliminary work
Close front side window completely
Disconnect BATTERY CABLE
Remove SOUND INSULATION IN FR
Butt Connector For Repairing A Plug Connection
Notes
IMPORTANT:
1. Identify cause of damage (e.g. sharp-edged body parts, faulty
electrical
loads, jammed mechanisms, corrosion caused by ingress of water, etc.).
2. Read out fault memory.
3. Elim
SEE MORE:
New Components
Integrated Chassis Management
The new ICM control unit in the F01/F02 essentially performs the calculations
for the control functions that
influence the longitudinal and lateral dynamics. The ICM control unit also
contains the control functions of
"Dynamic Cruise Control" and "Active Cruise Contro
Vertical Dynamics Control
General Information
When driven vigorously or on an uneven road surface, a vehicle tends to
respond with undesirable body
movements. BMW first developed Vertical Dynamics Control for the E70 and was
able to effectively reduce
such body motion as a result.
VDC improves the following driver-percept
