BMW 7 Series: Checking Setting Engine Emission
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
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Fig. 1: Identifying Automatic Engine Start/Stop Switch (MSA)
- 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.
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Fig. 2: Identifying Engine Hood/Bonnet Basic Setting And Workshop Mode
When working with diagnosis tools
- Observe instructions in diagnosis tool
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Check Fuel Pressure
Necessary preliminary work:
Connect BMW diagnosis system.
IMPORTANT: Lines are under pressure!
Wear protective goggles and gloves.
Fuel can emerge spontaneously at high velocity when the fuel line is
Checking Fuel Delivery Pressure (N20, N53, N54, N55, N63, N74)
Necessary preliminary work:
Connect BMW diagnosis system.
IMPORTANT: Lines are under pressure!
Wear protective goggles and gloves.
Fuel can emerge spontaneously at high velocity when the fuel line is
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Central Locking Unit/Unlocking Units
REMOVING AND INSTALLING OR REPLACING DRIVE UNIT FOR ROLLER SUN
BLIND
Necessary preliminary tasks
Remove REAR WINDOW ROLLER BLIND
Release screws (1).
Remove drive linkage (2).
Installation
Drive linkage (2) can only be installed in one position.
Fig. 3: Identifying Drive Linkage With Mounting Sc
General Information And Definitions
Toe angle difference
a - Toe difference angle
D - Centre point of operating circle
The toe angle difference is the angle adjustment of the inner cornering wheel
relative to the outer cornering
wheel when negotiating a curve. Steering is designed in such a way that angular
position of wheels change
