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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 Convenient-Start System - System Functions

The convenient-start system allows the engine to be started in a user-friendly manner as the starter motor automatically remains engaged until the engine is running. When the START-STOP button is pressed, the CAS control unit first activates terminal 15. The relief relay for the ignition coils is

 Valvetrain

The valvetrain on the N52 introduced in 2006, used 5 mm valve stems on both the intake and exhaust. To increase durability, the exhaust valve stems were increased to 6 mm from 6/06 production. All of the new NG6 engine have adopted the 6 mm valve stem for the exhaust, the intake stem remains at

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