# Service bulletin LI91.10\-P\-078305

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: 11021153
- Published by NHTSA: 2025\-08\-01
- Manufacturer's number: LI91.10\-P\-078305
- Manufacturer's date: 2025\-07\-31
- NHTSA component: SEATS

## NHTSA's summary

Complaint The "Easy entry and exit feature" function deactivates itself after a brief period. \(see attachment\). Cause The cause is currently being investigated. Remedy 1. Update the A26/17 MBUX multimedia system \(head unit\) to the latest software version FUP5 Opt. \(E505.4\) or newer. 2. Perform a factory reset of the head unit after the update. If the issue continues: • Capture a head unit log and a Body CAN trace during the occurrence of the problem. • Submit both via a TIPS case to the Telematics team. Note: Only collect and submit the log and trace if the symptom can be reliably reproduced.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021153-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021153-9999.pdf)

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

## Components

Seats

## Vehicles listed

- 2023 to 2024 MERCEDES\-BENZ AMG C43
- 2024 MERCEDES\-BENZ AMG C63 S E
- 2022 to 2024 MERCEDES\-BENZ AMG EQS
- 2021 to 2025 MERCEDES\-BENZ AMG GLB35
- 2024 MERCEDES\-BENZ AMG GLC43
- 2025 MERCEDES\-BENZ AMG GLC63 S E
- 2021 to 2022 MERCEDES\-BENZ AMG GLE53
- 2023 to 2024 MERCEDES\-BENZ AMG GLE53 4MATIC\+
- 2021 to 2022 MERCEDES\-BENZ AMG GLE63 S
- 2023 to 2024 MERCEDES\-BENZ AMG GLE63 S 4MATIC\+
- 2022 to 2025 MERCEDES\-BENZ C 300
- 2025 MERCEDES\-BENZ E 350
- 2025 MERCEDES\-BENZ E 350 4MATIC
- 2025 MERCEDES\-BENZ E 450 4MATIC
- 2025 MERCEDES\-BENZ E 450 4MATIC ALL\-TERRAIN
- 2023 to 2024 MERCEDES\-BENZ EQS 450 4MATIC
- 2022 to 2024 MERCEDES\-BENZ EQS 450\+
- 2022 to 2023 MERCEDES\-BENZ EQS 580 4MATIC
- 2020 to 2025 MERCEDES\-BENZ GLB 250
- 2023 to 2025 MERCEDES\-BENZ GLC 300
- 2023 to 2025 MERCEDES\-BENZ GLC 300 4MATIC
- 2020 to 2023 MERCEDES\-BENZ GLE 350
- 2024 to 2025 MERCEDES\-BENZ GLE 350 4MATIC
- 2025 MERCEDES\-BENZ GLE 450 4MATIC
- 2025 MERCEDES\-BENZ GLE 450E 4MATIC

JSON: [/v1/bulletins/11021153](/v1/bulletins/11021153)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20LI91.10-P-078305&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11021153&vehicle=Service%20bulletin%20LI91.10-P-078305)