BMW X5: Troubleshooting
- Contents Of Engine Electrical System General
- Instructions For Removing And Installing Electronic Control Units
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Contents Of Engine Electrical System General
General Information
Working on ignition system
Removing and installing electronic control units
Welding work (overload protection of control units)
Disconnecting and connecting battery
Disconnec
Instructions For Removing And Installing Electronic Control Units
IMPORTANT:
Disconnecting the vehicle battery will cancel the fault memories
of control
units. Consequently, before disconnecting the car's battery, always
interrogate the fault memories. Invest
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
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Overview
Engines with 4 or 6 cylinders
Vehicle identification number
Filler neck for washer fluid
Jump-starting, negative battery terminal
Jump-starting, positive battery terminal
Oil filler neck
Coolant reservoir, auxiliary cooling
Coolant reservoir, engine
8-cylinder engine
Filler neck for was
Removing And Installing / Replacing Control Unit For Transfer Box (ATC
700)
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Replacement:
Before and after replacement, execute the "Repair" service function with
the BMW diagnosis system.
Necessary preliminary tasks:
Raise luggage compartment floor trim
Release screws
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