89
58s
J589
J518
E408
Block diagram
E408 Entry and start authorisation button
J518 Entry and start authorisation
control unit
J589 Driver identification control unit
SSP287_008
Convenience CAN High
Convenience CAN Low
Restriction of functions
The following operating statuses result in
the restriction of functions:
– Undervoltage < 9 V
– Overvoltage > 15 V
– CAN bus fault
– Component protection active
Possible fault messages in the dash panel
insert display and in the front information
and display unit (MMI):
– "User not identified"
Remedy: Finger must be applied again
– "Sensor contaminated"
Remedy: Clean sensor with a clean
lint-free cloth
The user ID is read in by the following
components:
– Sunroof electronics control unit J528
– Parking aid control unit J446
– Data bus diagnostic interface J533
– Convenience system central control unit
J393
– Climatronic control unit J255
– Seat adjustment and steering column
adjustment with memory control unit
J136
– Door control unit, driver side J386
