NHTSA ID Number: 11027903
Manufacturer Communication Number: LI54.21-P-079255
TSB/Document Date: 2026-01-31
Summary
Complaint Combustion engine does not start, MIL (Malfunction Indication Light) may light up in instrument cluster, only electric driving possible. Fault code P0E2F00 logged in control unit BMS N82/10. Cause Auxiliary consumer fuse in the HV battery has an open circuit, caused by a short circuit in the auxiliary consumer line. Remedy Requirement: Before carrying out test work, it must be ensured that the person performing the work has successfully completed the required qualification for work on the high-voltage system. Qualification according to WIS is required to replace the auxiliary consumer fuse including eLearning T3057D-US.TTB. Note: If the fault "P0E2F00 The electrical fuse B for the high voltage has a malfunction" is stored in the N82/10 BMS control unit, the HV protocol must also be checked to see whether the fuse for the auxiliary consumers is ok. Check: To determine the causing HV component in the auxiliary consumer line, please follow and process the guided troubleshooting of the fault "P0E2F00 The electrical fuse B for the high voltage has a malfunction" saved in the N82/10 BMS control unit.
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TSB/Document ID: LI54.21-P-079255
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-31
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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Combustion engine does not start, auxiliary consumer fuse in the HV battery defective
Topic number
LI54.21-P-079255
Version
1
Function group
54.21 - Control units / basic modules
Date
1/30/26
Validity
Model 223.182
Reason for change
Complaint
Combustion engine does not start, MIL (Malfunction Indication Light) may light up in instrument cluster, only electric
driving possible.
Fault code P0E2F00 logged in control unit BMS N82/10.
Cause
Auxiliary consumer fuse in the HV battery has an open circuit, caused by a short circuit in the auxiliary consumer line.
Remedy
Requirement:
Before carrying out test work, it must be ensured that the person performing the work has successfully completed the
required qualification for work on the high-voltage system. Qualification according to WIS is required to replace the
auxiliary consumer fuse including eLearning T3057D-US.TTB.
Note:
If the fault "P0E2F00 The electrical fuse B for the high voltage has a malfunction" is stored in the N82/10 BMS control
unit, the HV protocol must also be checked to see whether the fuse for the auxiliary consumers is ok.
Check:
To determine the causing HV component in the auxiliary consumer line, please follow and process the guided troubleshooting of the fault "P0E2F00 The electrical fuse B for the high voltage has a malfunction" saved in the N82/10 BMS
control unit.
WIS-References
Document number
Title
AR47.70-P-0022AMS
Remove/install electrical fuse for high- Fuse is in the control unit box
voltage on-board electrical system
31.01.2026 02:37
© Copyright Mercedes-Benz AG
Note
SAHARRY
Page 1 / 2
Disclaimer
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
Power generation > Engine management > Starter motor > Function > Defective
Power generation > Engine management > Indicator lamp > Engine diagnosis > lit
Power generation > Engine management > Engine start/stop > Does not start
Overall vehicle > Power supply > High-voltage on-board electrical system > High-voltage battery > Malfunction
Overall vehicle > Power supply > Fuel cell > Display message
Parts
Part number
ES1 ES2 Designation
A7899800200
Quantity Note
Auxiliary consumer fuse parts
kit
EPC
1
X
Control unit/fault code
Control unit
Fault text
N82/10 - Battery management system (BMS) (BMS10PB01_AMG)
P0E2F00 - Electrical fuse B for the high voltage has a
malfunction. _
Operation numbers/damage codes
Op. no.
Operation text
Time
Damage
code
Note
540K074
31.01.2026 02:37
© Copyright Mercedes-Benz AG
SAHARRY
Page 2 / 2
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