# Over\-the\-air update OTA\-5497834

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: Over\-the\-air update
- NHTSA id: 11022098
- Published by NHTSA: 2025\-08\-23
- Manufacturer's number: OTA\-5497834
- Manufacturer's date: 2025\-08\-09
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Issue Mercedes\-Benz AG, the manufacturer of Mercedes\-Benz vehicles, has determined that on certain subject vehicles, the software for the Mobile Access Unit \(“MAU”\) control unit may not correspond to the current series production configuration. This OTA software update for the Digital Vehicle Key \(“DVK”\) function within the MAU will improve battery management by disconnecting the vehicle network when it is not required. In addition, the software update contains general improvements for system stability and DVK device compatibility. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022098-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022098-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2025 MERCEDES\-BENZ AMG E 53 4MATIC\+ WAGON
- 2025 MERCEDES\-BENZ E 350
- 2025 MERCEDES\-BENZ E 350 4MATIC
- 2025 MERCEDES\-BENZ E 450 4MATIC

JSON: [/v1/bulletins/11022098](/v1/bulletins/11022098)

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