LI54.21-P-064054 Service Bulletin/Repair Instructions

7G-DCT: FC 051300 in fault memory after voltage fluctuations in on-board electrical system

Topic number
LI54.21-P-064054
Version
1
Design group
54.21 Control modules/modules
Date
05-10-2016
Validity
All vehicles in MFA model series (BR117, BR156,

BR176, BR242, BR246) with 7G-DCT transmission 724.0

with VGS2 transmission control unit:

VGS2 transmission control unit can be identified through

following numbers in quick test: MB object number for

hardware: 005 446 36 10 or 005 446 37 10

Production month for vehicle later than 12/2013 (VGS2

first use)
Reason for change
Country distribution adapted again
Reason for block
Complaint:
Gear range P cannot be disengaged after voltage fluctuations occurred in on-board electrical system (e.g. after extended idle time for vehicle or as consequence of a dead battery). If necessary, fault codes that refer to an undervoltage

may be stored in various control unit in a quick test.

Basic adaptation for transmission cannot be performed.

FC 051300 active or stored in transmission control unit.

The following fault message is shown in XENTRY in the dual clutch transmission control unit in the actual values display for the drive authorization values for all menu items "Fault: Error details: Conditions not correct" (Examples in Attachment).
Attachments

File
Description
XENTRY Werte Fahrberechtgung DKG.pdf
XENTRY fault message when drive authorization values

shown in dual clutch transmission control unit
XENTRY Drive authorization values DKG.pdf
XENTRY screen for drive authorization values in dual

clutch transmission control unit
Cause:
Drive authorization values in control unit for 7G-DCT transmission.
Remedy:
Replace transmission control unit. Please refer to P-B-27.00/128 before ordering.
Symptoms

05-10-2016 6:04 PM

© Copyright Daimler AG
PARKEGL
Page 1/2
Power transmission / Function / No power flow

Power transmission / Automatic transmission / Function / No power flow

Power transmission / Automatic transmission / Automatic transmission operation / Drive position selection / Function / Blocks

Power transmission / Automatic transmission / Function / Electrical fault/Fault code

Power transmission / Automatic transmission / Automatic transmission operation / Drive position selection / Function / Gear cannot be engaged

Power transmission / Automatic transmission / Automatic transmission operation / Drive position selection / Function / Nonfunctional

Power transmission / Automatic transmission / Automatic transmission operation / Drive position selection / Function / Electrical fault/Fault code
Control unit/fault code

Control unit
Fault code
Fault text
N15/13 - Electronic transmission control for double-plate clutch transmission (DKG)

(DCT)
051300
The start enable was not issued. _
Parts

Part number
ES1 ES2 Designation
Quantity Note
EPC
A 000 270 36 00
Controller unit parts kit
1
VGS2 with DAS3
X
A 000 270 39 00
Controller unit parts kit
1
VGS2 with DAS4
X
Operation numbers/damage codes

Op. no.
Operation text
Time
Damage

code
Note
54553 81
05-10-2016 6:04 PM

© Copyright Daimler AG
PARKEGL
Page 2/2

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