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
Special tools required:
11 4 270
11 4 450
11 4 481
IMPORTANT: Aluminium screws/bolts must be replaced each time they
are released.
The end faces of aluminium screws/bolts are painted blue for the purposes of
reliable identification.
Jointing torque and angle of rotation must be observed with
WARNING: Xenon headlights: Danger to life due to high voltage!
Work on the entire xenon lighting system (ignition unit, control unit and
lamp) may only be carried out by specialist personnel.
WARNING: Halogen lamps are under pressure:
To avoid injury, wear protective goggles and gloves.
IMPORTANT: