2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI82-85_P-0490662 Date: 120509
Audio 50/COMAND APS - Theft Protection Active Displayed
Audio 50 APS / COMAND APS: The display shows the message "Theft protection active", as a result initial startup not possible/cannot be
completed
Topic number LI82.85-P-049066
Version 2
2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 68
Design group 82.85 Navigation and communication systems (CNS,
ICS, COMAND, FleetBoard)
Date 05-09-2012
Validity Models 169, 245, 171, 230, 211, 219, 203 CLC, 164 and 251 with COMAND (code 512 or 527) or Audio 50 APS (code 511 or 525) and code 809 or 800 NTG2.5
Model 463 with COMAND (code ET4) NTG2.5
Reason for change Removed note to fax CAN log
Complaint:
Fault profile 1/2: The display of the COMAND unit (A40/3) or Audio 50 APS (A2/56) shows the message "Theft protection active".
Fault profile 3/4/5: Initial startup of the COMAND unit (A40/3) or Audio 50 APS (A2/56) cannot be performed with DAS/Xentry Diagnostics or is
aborted prematurely.
Cause:
Re. 1. The COMAND (A40/3) or Audio 50 APS (A2/56) is in the "as-delivered state". In DAS/Xentry Diagnostics go to Actual values/Theft
protection and check the status of the COMAND (A40/3) or Audio 50 APS (A2/56). Initial startup of the COMAND (A40/3) or Audio 50 APS
(A2/56) with DAS/Xentry Diagnostics was not performed during the last installation. The PIN is still stored in the COMAND (A40/3) or Audio 50
APS (A2/56). The COMAND (A40/3) or Audio 50 APS (A2/56) locks after approx. 50 activation sequences.
Re. 2. The COMAND (A40/3) or Audio 50 APS (A2/56) is in the "as-delivered state". Initial startup was performed approx. 2-4 weeks ago and the
PIN has already been redocumented in VeDoc. However, the initial startup was not completed properly due to a procedural error in DAS/Xentry
Diagnostics.
Re. 3. The COMAND (A40/3) or Audio 50 APS (A2/56) is in the "as-delivered state" and is new from the warehouse. Initial startup cannot be
performed with DAS/Xentry Diagnostics because the PIN cannot be read from the COMAND (A40/3) or Audio 50 APS (A2/56). During initial
startup, the PIN was erased with DAS/Xentry Diagnostics too early to allow initial startup to be completed successfully.
Re. 4. In model series 164 and 251 the EZS/EIS control unit (N73) A164 545 15 08 or A164 545 16 08 is installed. The EZS/EIS control unit (N73)
and the COMAND (A40/3) or Audio 50 APS (A2/56) are not compatible with the "Theft protection" function.
Re. 5. The COMAND (A40/3) or Audio 50 APS (A2/56) is in the "CAN signal disrupted" state. The fault code DA00 is stored in the fault memory
of the COMAND (A40/3) or Audio 50 APS (A2/56). Initial startup is not possible because there is a CAN fault. CAN communication to the
EZS/EIS control unit (N73) is disrupted or faulty.
Remedy:
Use at least DAS/Xentry Diagnostics version 11/09 with add-on 1352 or DAS/Xentry Diagnostics version 01/10 with add-on 1354!
Re. 1. Perform initial startup of the COMAND (A40/3) or Audio 50 APS (A2/56) with DAS/Xentry Diagnostics.
Re. 2. Perform another initial startup of the COMAND (A40/3) or Audio 50 APS (A2/56) with DAS/Xentry Diagnostics.
Re. 3. Report the case to your market coordinator with a control unit log of the telematics control unit. He will forward the case to Daimler AG
headquarters. They may be able to determine the PIN again. When the PIN has been determined, perform initial startup of the COMAND (A40/3) or
Audio 50 APS (A2/56) with DAS/Xentry Diagnostics.
Re. 4. Replace the EIS (N73). To do this, determine the part number in the EPC system. Perform initial startup of the EIS (N73) and transfer the
chassis number to the EIS (N73). Be sure to use the correct upper and lower case letters. Perform another initial startup of the COMAND (A40/3) or
Audio 50 APS (A2/56) with DAS/Xentry Diagnostics.
Re. 5.a:
Check whether the chassis number has been transferred correctly in the EIS (N73).
1. Use DAS/Xentry Diagnostics to access the menu "EZS/EIS /Control unit adaptations / Write VIN" and check that the chassis number is
written correctly (including upper and lower case letters).
2. Perform a "MOST ring restart" in the COMAND (A40/3) or Audio 50 APS (A2/56) with DAS/Xentry Diagnostics. The menu item
"Restart optical ring" can be found in DAS/Xentry Diagnostics under Audio, Video, Navigation and Telematics.
3. Erase the stored fault in the Audio 50 APS (A2/56) and COMAND (A40/3).
4. Perform initial startup of the COMAND (A40/3) or Audio 50 APS (A2/56) with DAS/Xentry Diagnostics.
2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 69
Re. 5.b
b: Check whether CAN communication is functioning correctly at the COMAND (A40/3) or Audio 50 APS (A2/56). Perform a quick test
to check other control units for CAN faults and process these faults completely. Then perform initial startup of the COMAND (A40/3)
or Audio 50 APS (A2/56) with DAS/Xentry Diagnostics.
Re. 5.c:
If there are no other CAN faults stored in other control units and the EZS/EIS control unit (N73) contains the correct chassis number,
but the fault code DA00 is still stored and current in the COMAND (A40/3) or Audio 50 APS (A2/56), please log the CAN-B as
described in the attachment. Create a PTSS case and attach the CAN-B log.
Note:
When an Audio 50 APS (A2/56) or COMAND APS (A40/3) with PIN theft protection is installed in a vehicle, the PIN code is
automatically redocumented in the VeDoc system (online) as of DAS version 11/09. After successful initial startup, please check whether
the PIN has been redocumented correctly in the VeDoc system.
Attachments
Symptoms
Control unit/fault code
Work units
WIS-References
Attachment
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Instruction Sheet for logging the CAN-B
