IMPORTANT: Risk of damage!
There is a hard disk installed in the head unit.
Carry out mechanical work on the head unit and adjacent components with
care.
Avoid subjecting the head unit to vibration/
Necessary preliminary tasks
Remove FRONT SEAT, DRIVER'S SIDE
Remove PANEL FOR DOOR PILLAR.
Pull trim (1) in direction of arrow towards rear and lift out.
Fig. 12: Identifying Trim
Release plastic
IMPORTANT: Read and comply with NOTES on protection against electrostatic
damage (ESD
protection).
NOTE: Comply with notes and instructions on NOTES ON HANDLING OPTICAL
FIBRES.
Necessary preliminary
Input/output Central Locking
Fig. 10: Central Locking Input/Output Diagram
COMPONENTS DESCRIPTION CHART
ID transmitter
Central locking button
Interior trunk button in the A-pillar
Car Access System 4 (CAS 4)
Center-lock button
Central locking, fuel filler flap
Exterior trunk button
Junctio
General information
A Check Control message is displayed.
Vehicle key recognition by the vehicle may malfunction
under the following circumstances:
The battery of the vehicle key is discharged.
Interference of the radio connection from
transmission towers or other equipment with
high transmitt