BMW X5: Control Unit Box
REPLACING FAN FOR ELECTRONICS BOX
NOTE: Follow instructions for removing and installing electronic control units.
- Remove control unit.
- Read fault memory. Switch off ignition.
Unclip plug (1).
Remove DDE control unit (3).
Remove relay plug-in (5) towards top.
Release screws (4).
Lift out device carrier (2).
Unfasten plug connection and disconnect.
Release air cowl (1).
Remove electric fan (2) with bracket.
Add final details to vehicle.
Read fault memory.
Additional Fault Notes For Troubleshooting
Necessary preliminary tasks:
- Connect diagnosis system
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Fig. 79: Identifying DIS
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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
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Control Unit Box
REMOVING AND INSTALLING/REPLACING ELECTRONICS BOX
IMPORTANT: Read and comply with notes on PROTECTION AGAINST
ELECTROSTATIC DAMAGE (ESD PROTECTION).
NOTE: Follow instructions for removing and installing electronic
control units.
Necessary preliminary tasks:
Read fault memory
Disconnect negative
Auto Start/Stop function
Principle
The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, for instance in traffic jam or at traffic lights.
Drive-ready state remains switched on. The engine
starts automatically for driving off.
General information
After each engine start using the
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