BMW X5: Ignition Wires, Spark Plugs
FIRING ORDER
Fig. 3: Firing Order (V8)
REPLACING ALL SPARK PLUGS (N62, N62TU)
Special tools required:
Necessary preliminary tasks:
- Switch off ignition
- Remove all IGNITION COILS.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171 and special tool 12 1 172
(torque limiter).
Without special tool 12 1 172, observe tightening torque.
Tightening torque 12 12 1AZ.
Fig. 4: Tightening Down Spark Plugs With Special Tool 12 1 171 And 12 1 172
READ NEXT:
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting
Fault in fuel injection system
Spark plug faults
Ignition coil faults
Further fault patterns with evaluation
Additional fault notes for troubles
REPLACING CONTROL UNIT (VALVETRONIC)
Switch off ignition.
Follow instructions for disconnecting and connecting battery.
Disconnect battery.
CAUTION: Follow instructions for removing and installing e
REPLACING ALTERNATOR BELT PULLEY
Special tools required:
12 7 110
Remove and install alternator drive belt.
Depending on alternator type, grip shaft with:
hexagon socket
multi-tooth socket or
SEE MORE:
> E65, E66
The fuel supply system on the BMW 7-Series is requirement-orientated and thus
depends on consumption.
The DME calculates the amount of fuel required on the basis of various operating
variables.
In turn, the engine's current fuel requirement is calculated from this value.
The DME r
Principle
Dynamic Traction Control (DTC) is a version of
the Dynamic Stability Control (DSC) where drive
power is optimized.
The system ensures maximum drive power on
unusual road conditions, for instance unplowed
snow covered roads, or loose road surfaces, but
with somewhat limited driving stabili