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
SEE MORE:
Instructions For Opening And Replacing Parts In Refrigerant Circuit
WARNING:
Avoid contact with refrigerant and refrigerant oil
Follow safety instructions for handling R 134a refrigerant.
Follow safety instructions for handling refrigerant oil.
CAUTION:
Always use new O-rings each time A/C connections are opened.
Moisten O-rings with refrigerant oil
Air Conditioner Refrigerant
FREON
The refrigerant Freon R12 is used in most BMW automobiles with an air
conditioner up through the 1992
model year. It has a boiling point of - 29.8ºC (sea level), at which the
refrigerant is transformed from a liquid
into a gaseous state. This boiling point, however, is not constant. It is
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