LI54 10-P-064762

213 Battery discharged, vehicle does not start - Event code U116000 "A
bus keepawake control unit has been detected" is stored in quick test
Topic number
LI54.10-P-064762
Version
5
Design group
54.10 Battery, power supply, voltage converter
Date
07-18-2017
Validity
Model series 213
Reason for change
Remedy updated
Reason for block
Complaint:
Battery discharged, vehicle does not start
Event code U116000 "A bus keepawake control unit has been detected" is stored in quick test (EZS (N73))
Cause:
Various possible causes.
1. The EZS control unit (N73) crashes. Event code: FF-FFFFFF
This causes the CAN BUS to be kept awake. A reset by the (internal) battery disconnect switch is not effective.
2. The KEYLESS-GO control unit (N69/5) crashes. Event code: 14-040000
This causes the CAN BUS to be kept awake. A reset by the (internal) battery disconnect switch is not effective.
3. Customer had activated the hazard warning lights for longer than 15 min. Event code: 00-100000
During hazard warning lights "ON", all CAN BUS systems are awake and active. Required current approx. 20 Ah.
4. All other cases must be reported for further analysis.
Remedy:
The remedies correspond to the event codes in gateway shown below.
1. Event code: FF-FFFFFF
Up to production date 01.02.2017; up to FIN ...A2086618
--> Flash EZS
Invoice to damage code 8000N-90
07-18-2017 4:57 PM
© Copyright Daimler AG
MYNELSO
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2. Event code: 14-040000
Up to production date 17.05.2017;
--> Flash Key-Go control unit (N69/5) with new SW (min. A213 902 17 12).
Invoice to damage code 82190-90
3. Event code: 00-100000
This is not a vehicle fault. Change the battery and return the vehicle to the customer.
4. Create a PTSS case with the following information and documentation attached to the case:
Documentation Needed:
(1) Control unit event log of electronic ignition lock EZS (N73)
(2) Control unit event log of SAM-F (N10/6)
(3) Up-to-date no-load current measurement
(4) Initial Quick Test
Discuss the following questions with the customer:
(1) Were there any messages in the instrument cluster?
(2) Did this behavior occur once only, or has it occurred before? If so, when (approximately)?
(3) Was the vehicle parked in a particular location or with high traffic levels?
(4) Has the vehicle been modified or are there any installations in the vehicle?
Symptoms
Overall vehicle / Power supply / Battery/On-board electrical system / Battery function / Battery discharges
Overall vehicle / Power supply / Quiescent current/consumer shutoff / Does not switch off
Overall vehicle / Power supply / Battery/On-board electrical system / Battery/on-board electrical system display message / Low voltage Charge battery
Control unit/fault code
Control unit
Fault code
Fault text
N10/6 - Front signal acquisition and actuation module (Driverside SAM) (BC_F213)
-
N73 - Electronic ignition lock
(EZS) (EZS213)
A bus keepawake unit was detected. _
U116000
Operation numbers/damage codes
07-18-2017 4:57 PM
© Copyright Daimler AG
MYNELSO
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Op. no.
Operation text
54-0650
12V
54-1011
QUICK TEST
54-0992
CODE
07-18-2017 4:57 PM
© Copyright Daimler AG
Time
MYNELSO
Damage
code
Note
8000N 90
Flash EZS control unit N73
82190 90
Flash Key-Go control unit N69/5
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