General Information
Working on ignition system
Removing and installing electronic control units
Welding work (overload protection of control units)
Disconnecting and connecting battery
Disconnec
IMPORTANT:
Disconnecting the vehicle battery will cancel the fault memories
of control
units. Consequently, before disconnecting the car's battery, always
interrogate the fault memories. Invest
1. Quick-connect coupling with ID marking
Fig. 79: Identifying Quick-Connect Coupling With ID Marking Components
Removing:
Push quick-connect coupling (1) against pipe (4) (thereby relieving strain on
spring (2) ).
Press plastic ring (3) into quick-connect coupling (1) and remove coupling (1).
As
Special tools required:
11 4 430
11 4 470
IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical
corrosion.
A magnesium crankcase requires aluminium screws/bolts exclusively.
Aluminium screws/bolts must be replaced each time they are r