IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
IMPORTANT: Aluminum-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they arereleased.
The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
NOTE: Installation location of pulse generator for crankshaft is underneath starter motor.
Preparatory tasks:
Detach plug (1) from crankshaft pulse generator (2).
Release screw.
Installation
Replace aluminum screws.
Tightening torque 12 14 2AZ.
Withdraw pulse generator (2) from crankcase.
Installation:
Replace sealing ring.
NOTE: Check stored fault messages. Now clear the fault memory.

Fig. 13: Locating Pulse Generator Plug
REPLACING INLET CAMSHAFT PULSE GENERATOR (N52, N52K, N51, N53)
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
Unlock plug (1) and remove.
Release bolt.
Installation:
Replace screw.
Tightening torque 12 14 3AZ.
Remove pulse generator (2).

Fig. 14: Locating Pulse Generator Plug
NOTE: Check stored fault messages.
Now clear the fault memory.
Replacing Pulse Generator On Inlet Camshaft (N52K)
Replacing Control Unit (DME)
Alternator With Drive
BMW Digital Key
Replacing Front Left Wheel Arch