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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General Information
The brake system is one of the most important safety systems on any motor
vehicle. It is therefore essential to
act with utmost care when working on the brake system and to follow the
instructions below.
General:
Ensure cleanliness and only use rags which do not lose lint.
Wash away or vacuum u
Checking Brakes On Test Stand
IMPORTANT: Only brake test stands (analyzers) with test speeds of 2.5 -
6 km/h may be used.
Before driving onto the brake test stand (dynamic brake analyzer), switch off
the Hill Descent Control (HDC) and keep it switched off while testing the
brakes.
The HDC indicator lamp must not light up!
NOT
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