LI54 10-P-066341

Service Bulletin Details

Public Details for: LI54 10-P-066341

Vehicle does not start, battery discharged.


- 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 -

Vehicle does not start, battery discharged.
Topic number
LI54.10-P-066341
Version
3
Function group
54.10 Battery, power supply, voltage converter
Date
08-08-2017
Validity
BR231 and BR172
Reason for change
Examples added
Reason for block
Complaint:
Vehicle does not start, battery discharged.
The on-board electrical system data indicates a high discharge in the engine-off cycle; "CAN bus awake unusually
long", "Charge balance UNUSUAL"
Attachments
File
Description
Beispiel_Buswachhalter.pdf
Example_bus keepawake control unit
example_BUS_keep_awake.pdf
Example_BUS_keep_awake
Cause:
To be able to assess whether a bus keepawake event caused the battery discharge, it is necessary to examine the
stationary cycles. A constantly active CAN is identified by the text "Interior CAN awake unusually long" (see attachment). If this text is not displayed, the battery discharge has a different cause.
Cause 1:
IC (instrument cluster) is keeping the CAN bus awake. Vehicle battery is being discharged.
Affects vehicles with code 807 (Model Year 2017).
Fault identification:
1. Affects vehicles as of code 807.
2. The on-board electrical system data indicates a high discharge in the engine-off cycle; "CAN bus awake unusually
long", "Charge balance UNUSUAL"
3. The bus keepawake entry names the IC
NOTE: See examples in attachments below
Cause 2:
HERMES is keeping the CAN bus awake, only affects USA (code 494). Refer to LI82.85-P-066086.
08-08-2017 5:27 PM
© Copyright Daimler AG
MYNELSO
Page 1/3
With code 362 (HERMES LTE communication module), code 522 (Audio 20) and code 807
***If the vehicle does not match Cause 1 or Cause 2 please open a PTSS Case, see "Remedy" 3 below.***
Remedy:
Remedy 1:
DO NOT REPLACE ANY PARTS. This complaint can only be resolved by a software update.
Remedy (with Clean Point) to be published per TIPS.
Please open a PTSS Case including documentation described in Remedy 3 below.
Damage code: 54201-54
Remedy 2:
Refer to LI82.85-P-066086.
Damage code: 8209Z-90
"Remedy" 3:
**If not identified in Cause 1 or 2, please create a PTSS case with all the documents listed below and include in the
case attachments.**
Engineering may provide further instruction upon reviewing each case.
Documents needed in case attachments:
1. Quick test
2. Control units event log for signal acquisition and actuation module (SAM)
3. Bus keepawake event detection (from EIS --> Actual values)
3.1. Last bus keepawake entry
3.2. Last-but-one bus keepawake entry
4. Up-to-date quiescent current measurement.
Symptoms
Overall vehicle / Power supply / Battery/On-board electrical system / Battery function / Battery discharges
Overall vehicle / Power supply / Battery/On-board electrical system / Battery/on-board electrical system display message / Low voltage Charge battery
Operation numbers/damage codes
Op. no.
Operation text
08-08-2017 5:27 PM
© Copyright Daimler AG
Time
MYNELSO
Damage
code
Note
54201 54
Instrument cluster - no-load current
too high
Page 2/3
8209Z 90
08-08-2017 5:27 PM
© Copyright Daimler AG
MYNELSO
Communication module for telematics service - software release
Page 3/3
CAN activity during the entire park
cycle when vehicle is locked!
Interior CAN bus is
awake unusually long.
Charging balance
suspicious.
BODY-CAN keeps
awake – technical
issue


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