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Service bulletin LI82.70-P-077433

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10249479
Published by NHTSA2024-02-01
Manufacturer's numberLI82.70-P-077433
Manufacturer's date2024-01-31
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
MERCEDES-BENZ AMG EQE2023 to 2024
MERCEDES-BENZ EQE 350+2023 to 2024
MERCEDES-BENZ EQE 5002023 to 2024
MERCEDES-BENZ EQE3502023
MERCEDES-BENZ EQE350+2023
MERCEDES-BENZ EQE5002023
MERCEDES-BENZ redundant EQE 350 4MATIC2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.