NHTSA ID Number: 11023103
Manufacturer Communication Number: LI54.10-P-079772
TSB/Document Date: 2025-09-12
Summary
Complaint After a software update of component LIB48_222 - G1/3 (48 V on-board electrical system battery) from software release A 000 902 50 48 to software release A 000 902 15 89, the fault code B183319 may be output. B183319 "The battery for the 48V on-board electrical system has a malfunction. The limit value for current has been exceeded" Cause Anomaly in the software update Remedy Please perform the following steps in the specified sequence: 1.) Delete fault codes 2.) Disconnect XENTRY Diagnosis and the 12 V battery charger 3.) Disconnect ground cable from the 12 V battery 4.) Ensure bus idle for at least 10 minutes 5.) Re-connect ground cable to the 12 V battery 6.) Delete fault codes again 7.) Perform a test drive 8.) Check fault codes > If fault code B183319 is still current, continue with the guided fault analysis in XENTRY Diagnosis. > If fault code B183319 goes to stored and can be cleared, no further action is required.
G1/3 (LIB48_222): B183319 after software update
Topic number
LI54.10-P-079772
Version
2
Function group
54.10 - Battery, power supply, voltage converter
Date
9/10/25
Validity
Model series 213, 167, 257, 238, 290 with equipment
code B01
Reason for change
Validity
Complaint
After a software update of component LIB48_222 - G1/3 (48 V on-board electrical system battery) from software release A 000 902 50 48 to software release A 000 902 15 89, the fault code B183319 may be output.
B183319 "The battery for the 48V on-board electrical system has a malfunction. The limit value for current has been
exceeded"
Cause
Anomaly in the software update
Remedy
Please perform the following steps in the specified sequence:
1.) Delete fault codes
2.) Disconnect XENTRY Diagnosis and the 12 V battery charger
3.) Disconnect ground cable from the 12 V battery
4.) Ensure bus idle for at least 10 minutes
5.) Re-connect ground cable to the 12 V battery
6.) Delete fault codes again
7.) Perform a test drive
8.) Check fault codes
> If fault code B183319 is still current, continue with the guided fault analysis in XENTRY Diagnosis.
> If fault code B183319 goes to stored and can be cleared, no further action is required.
Disclaimer
11.09.2025 16:23
© Copyright Mercedes-Benz
AG
CCUSHWA
Page 1 / 2
NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz
approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and
provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect
is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a
symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes
resulting in the same or similar symptoms or conditions described in this document, and trained professional service
technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained
in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.
Symptoms
Overall vehicle > Power supply > Battery/On-board electrical system > Battery/on-board electrical system indicator
lamp > Battery charge indicator/consumer shutoff > Illuminates white
Overall vehicle > Networking > Diagnosis/software > Software update (add-on)
Overall vehicle > Networking > Diagnosis/software > Current problems
Control unit/fault code
Control unit
Fault text
N83/1 - DC/DC converter (DDW) (DCDC48_222)
B183319 - The battery for the 48V on-board electrical
system has a malfunction. The limit value for current has
been exceeded. (LIB48_222)
Operation numbers/damage codes
Op. no.
Operation text
11.09.2025 16:23
© Copyright Mercedes-Benz AG
Time
Damage
code
H
540HY
CCUSHWA
Note
Page 2 / 2
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TSB/Document ID: LI54.10-P-079772
Replacement Service Bulletin Number:
MFR Communication Date: 2025-09-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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