LI54 10-P-066344

Vehicle does not start, battery discharged.
Topic number
LI54.10-P-066344
Version
1
Design group
54.10 Battery, power supply, voltage converter
Date
06-02-2017
Validity
BR166/ BR292
Reason for change
Reason for block
Complaint:
Vehicle does not start, battery discharged.
For the analysis/identification of the cause, the following documents are required:
1. Quick test
2. SAM control unit log
3. Bus keepawake event detection (from EIS --> Actual values)
3.1. Last bus keepawake entry
3.2. Last-but-one bus keepawake entry
4. Instrument cluster control unit log
5. Up-to-date quiescent current measurement
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. Vehicle battery is being discharged. Vehicle battery is
being discharged for option code 807.
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
06-02-2017 4:35 PM
© Copyright Daimler AG
MYNELSO
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Cause 2:
HERMES is keeping the CAN bus awake, only affects USA (code 494) and China (code 830). [Refer to LI82.85P-066086]
With code 362 (HERMES LTE communication module), code 522 (Audio 20) and code 807 (Model year 2017)
Cause 3:
Under analysis; If complaint is not identified in Cause 1 or Cause 2 please open a PTSS case with the documents listed above.
Remedy:
Remedy 1:
Remedy not yet available. Do not replace any parts
Remedy with cleanpoint will be published.
Report all cases
Damage code: 54201-54
Remedy 2:
Refer to LI82.85-P-066086
Damage code: 8209Z-90
Remedy 3:
Remedy not yet available; If complaint is not resolved in Remedy 1 or Remedy 2 please open a PTSS case with the
documents listed above.
Symptoms
Overall vehicle / Power supply / Battery/On-board electrical system / Battery function / Battery discharges
06-02-2017 4:35 PM
© Copyright Daimler AG
MYNELSO
Page 2/2