Mercedes Benz C 300 4MATIC # LI82-85_P-051952 Date: 120326 COMAND(R) - Switches ON With Vehicle Locked COMAND: System switches on without obvious cause with vehicle locked Topic number LI82.85-P-051952

Mercedes Benz C 300 4MATIC # LI82-85_P-051952 Date: 120326
COMAND(R) - Switches ON With Vehicle Locked
COMAND: System switches on without obvious cause with vehicle locked
Topic number LI82.85-P-051952
Version 1
Design group 82.85 Navigation and communication systems (CNS, ICS, COMAND, FleetBoard)
Date 03-26-2012
Validity Model 204 up to chassis #A531239, #F660210 and COMAND (code 512 or 527)
Reason for change
Complaint:
COMAND (A40/3) and central display (A40/8) switch on without obvious cause with vehicle locked. The system runs and can be operated
normally.
This complaint only occurs on COMAND (A40/3) with hardware release 08.11.
Note:
The fault profile does not cause the on-board electrical system battery to discharge. Generally, the head unit switches back off after 30 min. at the
latest with the ignition key removed.
Cause:
COMAND (A40/3) software error in combination with hardware release 08.11
  63
Remedy:
Update COMAND (A40/3) software. The modified software as of software release 08.28 is available since the Telematics CD Version 11/2008.
Note:
In isolated cases, the complaint may not be rectified after the COMAND software update. The cause my be the switch on the Audio/COMAND
display (A40/8). In this case, replace the Audio/COMAND display (A40/8).
Symptoms