BMW X5 Owners & Service Manuals

BMW X5: Instructions For Removing And Installing Electronic Control Units

IMPORTANT:

Comply with the following when replacing the DME/DDE (Digital Motor Electronics/Digital Diesel Electronics):

NOTES ON CHECKING IGNITION SYSTEM

Troubleshooting

Oscillograms

Check

REMOVING AND INSTALLING ENGINE COMPARTMENT SUPPRESSION LINES (GROUNDING CABLES) (N62/TU)

Necessary preliminary tasks:

Release screw connection (1) of intake filter mounting.

Pull ignition coil covers (2) out of rubber grommets.

Troubleshooting
Fig. 1: Identifying Holder And Ignition Coil Covers

Release front screw connection of fuel injector wiring harness, screw down grounding strap with crimp connection again in upward direction.

Release ignition coil ground screw connection and screw other end of grounding strap to ignition coil ground again.

Installation:

Tightening torque: 12 52 3AZ.

The picture shows the right cylinder bank, the procedure for the left cylinder bank is identical.

Add final details to vehicle, read out fault memory.

Troubleshooting
Fig. 2: Identifying Ignition Coil Ground Wire

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 Ignition Wires, Spark Plugs

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

 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 fault notes for troubles

 Electronic Switching Or Control Unit

REPLACING CONTROL UNIT (VALVETRONIC) Switch off ignition. Follow instructions for disconnecting and connecting battery. Disconnect battery. CAUTION: Follow instructions for removing and installing e

SEE MORE:

 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

 In-Line Plugs, 30-Pin, Hybrid System MQS/MPQ

Manufactured by AMP: The following contact types without strand sealing can be fitted in the plug housing MQS (Micro Quadlock System) MPQ, width 2.8 mm (Micro Power Quadlock) MPQ, width 5.2 mm (Micro Power Quadlock) Socket housing: Raise lock (1) on housing (2). Push contact carrier (3) from

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