BMW X5: Removing And Installing/Replacing Control Unit For Active Front Steering
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection)
Necessary preliminary tasks:
- Disconnect battery negative lead.
- Remove front left wheel arch cover (rear section).
Release nut (1) and disconnect ground cable.
Disconnect plug connections (2).
Unclip cable holder (3).
Installation:
Replace damaged cable holder.
![Ecus Modules](images/books/1905/index458.png)
Fig. 229: Identifying Plug Connections And Cable Holder
Release nuts (1, 2).
Tightening torque.
Remove active front steering control unit (3).
![Ecus Modules](images/books/1905/index459.png)
Fig. 230: Identifying Active Front Steering Control Unit
After installation:
- Replacement only: Carry out coding.
- Only when replacing / programming / coding: Carry out adjustment for
active front steering.
OVERVIEW OF CONTROL UNITS
![Ecus Modules](images/books/1905/index460.png)
Fig. 231: Overview Of Control Units
- Distribution box (on battery)
- Distribution box (luggage compartment)
- Airbag control unit
- Roof switch centre
- Rain/light sensor
- Footwell module
- Car Access System control unit
- Junction box electronics
- Fuse box, vehicle interior
- Dynamic Drive control unit
- Control unit/module for seat adjustment
- Controller
- Control unit for comfort access system
- Rear lid module
- Trailer module
Control unit for air supply unit
- Control unit, Vertical Dynamics Management
- Control unit, Park Distance Control
NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE)
Special tools required:
NOTE: Electrical components which are particularly sensitive to
electrostatic
discharge (electronic control units, sensors, etc.) are marked with the ESD
warning symbol.
E -Electro
S -Static
D -Discharge
IMPORTANT: Read and comply without fail with the notes on this subject
from Service
Information 2 06 04 128.
Statically charged persons can discharge by touching electrical components.
NOTE: Humans can only detect a discharge starting from a level of
approx. 3000 V.
The danger threshold for electrical components already starts from a level of
approx. 100 V.
![Ecus Modules](images/books/1905/index461.png)
Fig. 232: Touching Electrical Components For Discharge
Example:
Mechatronic control unit.
![Ecus Modules](images/books/1905/index462.png)
Fig. 233: Identifying Mechatronic Control Unit
![Ecus Modules](images/books/1905/index463.png)
Fig. 234: Precaution For Touching Pins Or Multi-Pin Connectors Directly
IMPORTANT: Do not touch pins or multi-pin connectors directly!
Touch electrical components by their housings only.
IMPORTANT: To prevent electrical components from being damaged or
destroyed by
electrostatic discharge, it is absolutely essential to comply with the following
instructions:
- When replacing electrical components, leave the replacement
components in their original packaging until immediately before they are
to be installed
- If necessary, always return a removed component in its original
packaging (always pack the component away immediately)
- Read and comply with user information on using the associated
special
tool 12 7 060
READ NEXT:
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD protection).
Necessary preliminary tasks:
Remove flap in luggage compartment panel on right.
Lift back insulat
NOTE: Initialization is necessary:
After replacing windshield
When installing a used rain/light sensor
NOTE:
Connect BMW diagnosis system
Initialize rain/light sensor.
REPLACING OPTICAL ELEME
RELAY CARRIER
Place special tool 61 1 153 on relay carrier (1) and carefully pull in
direction of arrow until retaining lugs (2) on
relay carrier are raised.
Fig. 257: Pulling Relay Carrier
Pull rel
SEE MORE:
Principle
Dynamic Traction Control (DTC) is a version of
the Dynamic Stability Control (DSC) where drive
power is optimized.
The system ensures maximum drive power on
unusual road conditions, for instance unplowed
snow covered roads, or loose road surfaces, but
with somewhat limited driving stabili
Special tools required:
00 9 120 TORQUE ANGLE MEASURING DIAL
00 9 250 TORSION ANGLE WRENCH WITH FLEXIBLE EXTENSION
11 0 300
11 4 280
11 4 281
11 4 282
11 4 283
11 4 290
11 9 340
Necessary preliminary tasks:
Remove cylinder head cover
Remove fastener (1) in direction of arrow.
Installat