BMW X5 Owners & Service Manuals

BMW X5: Engine Electrical System

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 Troubleshooting

CONTENTS OF ENGINE ELECTRICAL SYSTEM GENERAL General Information -> Working on ignition system. -> Removing and installing electronic control units. -> Welding work (overload protection of co

 Ignition Wires, Spark

REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51) Special tools required: 12 1 171 12 1 200. Necessary preliminary tasks: Switch off ignition Remove ignition coils. Unscrew spark

 Ignition Coil

NOTES ON CHECKING IGNITION SYSTEM Troubleshooting -> Fault in fuel injection system -> Spark plug faults -> Ignition coil faults -> Further fault patterns with evaluation -> Additional

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 Emissions Management

The N54 and N52KP meet ULEV II requirements for 2007. There are not many changes to the emission systems on these engines. The N54 engine has 2 underbody catalysts in addition to the "near engine" catalysts already in use from the N52. The N51 engine, however, is a SULEV II compliant engine which

 Crankcase

As far as the physical appearance and dimensions, the crankcase on the N54 is the same as the N52. The main change is in the materials, the N54 uses an all aluminum alloy crankcase. There is also cast iron cylinder liners similar to the previous M54 engine. The reason for using the all aluminum c

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