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
FIRING ORDER
Fig. 3: Firing Order (V8)
REPLACING ALL SPARK PLUGS (N62, N62TU)
Special tools required:
12 1 171
12 1 172
Necessary preliminary tasks:
Switch off ignition
Remove all IGNITION CO
Minimum set: Mechanical tools
Note: For straightening and assembly jobs on vehicle bodies, e.g. fitting
trim panels, removing window
weatherstrips, repairing small-scale dents, removing residual adhesive
materials, measuring gap widths,
levering out trim panel parts
Series: E12, E21, E23, E24, E28
REMOVING AND INSTALLING/REPLACING ELECTRONICS BOX
IMPORTANT: Read and comply with notes on PROTECTION AGAINST
ELECTROSTATIC DAMAGE (ESD PROTECTION).
NOTE: Follow instructions for removing and installing electronic
control units.
Necessary preliminary tasks:
Read fault memory
Disconnect negative