BMW 7 Series: Safety Information For Working On Vehicles With Automatic Engine
Start-Stop Function (MSA)
WARNING: If the engine hood/bonnet contact is pulled upwards (workshop
mode), the information "switch closed" is output. The automatic engine
start-stop function is active.
An automatic engine start is possible.
Observe safety precautions when working on MSA vehicles
Before carrying out practical work on the engine, always ensure that the MSA
functionality is deactivated so as
to prevent automatic engine starting while work is being carried out in the
engine compartment.
MSA function is deactivated by
- Deactivate MSA by means of button (1) in passenger compartment
- Open seat belt buckle and driver's door
Fig. 12: Identifying MSA Button
- Open engine bonnet/hood and ensure that engine hood/bonnet contact is
not in workshop mode
- Workshop mode
A = 10 mm
- Basic setting (engine hood/bonnet open)
B = 7 mm
To make sure that the engine hood/bonnet contact is at the basic setting, if
necessary press the hood/bonnet
contact up to the limit position before starting work and slowly release.
Fig. 13: Identifying Engine Hood/Bonnet Basic Setting And Workshop Mode
When working with diagnosis tools
- Observe instructions in diagnosis tool
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REPLACING ALL SPARK PLUGS (N54, N63, N74)
Necessary preliminary tasks
Switch off ignition.
Remove IGNITION COILS.
IMPORTANT: Wear safety goggles.
Oil and dirt particles may get into your eyes!
Cl
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting
Fault in fuel injection system
Spark plug faults
Ignition coil faults
Further fault patterns with evaluation
Additional fault notes for troubles
SEE MORE:
REPLACING ALL CONNECTING ROD BEARINGS (N63)
Notes
IMPORTANT: Note grinding stages on crankshaft.
Necessary preliminary work
Removing all PISTONS
Install new connecting rod bearing shells.
Install one blue bearing shell (1) and one red bearing shell (2) in each
connecting rod.
Install PISTON.
F
Necessary preliminary tasks
Remove INSTRUMENT PANEL TRIM
Position of actuator drive:
OVERVIEW OF ACTUATOR DRIVES ON HEATING AND AIR-CONDITIONING UNIT
Release screws (1) and remove grounding cable.
Installation note:
Replace screws (1).
Take off holder (2).
Fig. 53: Identifying Holder And Screws