BMW E90 - Locking the Steering

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E90 General Vehicle Electrical
Feedback
The ELV module sends the "unlocked and secured" status to the CAS2, which stores
the status of the ELV.
Switching off the ELV control module
The final item of information the CAS2 receives is the request to switch off the ELV.
On receiving this request, the CAS2 switches off the power supply.
Locking the Steering
The following procedure is necessary to lock the steering:
1. Lock request to the CAS2
2. ELV module switched on
3. Locking the steering
4. Feedback
5. Switching off ELV control module
Lock Request
The CAS2 initiates the steering locking procedure when the remote control
is removed from its holder.
The following conditions must apply in order to lock the steering:
• Vehicle speed < 1 km/h. The CAS2 receives this signal directly and
redundant via the K-CAN from the DSC module.
• Terminal 15 OFF
• ELV Hall sensor status
• Remote control/ID transmitter removed from plug-in slot
• Central locking secured (terminal 0).
Note: In connection with the Comfort Access system, the lock function is
initiated by detecting terminal 0.
ELV Control Module Switched on
The CAS2 switches on the ELV module. The Hall sensor of the electric steering lock is
then checked along with the “lock” conditions. On successful completion of the check,
the CAS2 issues the enable signal to lock the steering.