# Service bulletin LI54.21\-P\-079255

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11027903
- Published by NHTSA: 2026\-01\-31
- Manufacturer's number: LI54.21\-P\-079255
- Manufacturer's date: 2026\-01\-31
- NHTSA component: ENGINE

## NHTSA's 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11027903-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11027903-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Trouble codes named

P0E2F

## Vehicles listed

- 2023 to 2025 MERCEDES\-BENZ AMG S 63 E 4MATIC\+

JSON: [/v1/bulletins/11027903](/v1/bulletins/11027903)

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