# Service bulletin LI82.85\-P\-071623

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: 11026952
- Published by NHTSA: 2026\-01\-05
- Manufacturer's number: LI82.85\-P\-071623
- Manufacturer's date: 2026\-01\-02
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Complaint The customer may note the following complaints: \- The central display may remain dark through the entire drive cycle. The instrument cluster display will remain operational. \- No audio is present from the sound system \- MBUX multimedia system \(A26/17\) may not be shown on the initial quick test \- Various other MBUX multimedia system \(A26/17\) related complaints Cause Water ingress through the air vent under the front passenger seat \(see attached, note that the vents are facing the rear of the vehicle\). As a result, the head unit \(A26/17\) may become damaged. Inspect the MBUX multimedia system \(A16/17\) hardware, including all attached wiring and connectors, for traces of water and/or corrosion \(see attached picture for example\). Remedy Avoid using rubber floor mats for the second row seats on which water can collect and subsequently enter the air vent under the front passenger seat. An optimized cover is now available for the air vent under the front passenger seat \(see parts note\). To avoid a reoccurrence of water damage, install this cover. Note: Only primary losses resulting from the ingress of fluids that can be attributed to a production error is covered by the warranty. Fluids that are introduced into the vehicle as a result of environmental influences, incorrect repairs or incorrect use by the customer are not covered by the warranty. The damage code specified in this document only applies for the installation of the fan shroud.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11026952-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11026952-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2021 to 2022 MERCEDES\-BENZ AMG GLE53
- 2023 to 2025 MERCEDES\-BENZ AMG GLE53 4MATIC\+
- 2025 MERCEDES\-BENZ AMG GLE53 4MATIC\+ COUPE
- 2021 to 2022 MERCEDES\-BENZ AMG GLE63 S
- 2023 to 2024 MERCEDES\-BENZ AMG GLE63 S 4MATIC\+
- 2025 MERCEDES\-BENZ AMG GLE63 S 4MATIC\+ COUPE
- 2020 to 2022 MERCEDES\-BENZ AMG GLS63
- 2026 MERCEDES\-BENZ AMG GLS63
- 2023 to 2025 MERCEDES\-BENZ AMG GLS63 4MATIC\+
- 2020 to 2024 MERCEDES\-BENZ GLE 350
- 2024 to 2026 MERCEDES\-BENZ GLE 350 4MATIC
- 2020 to 2024 MERCEDES\-BENZ GLE 450
- 2025 to 2026 MERCEDES\-BENZ GLE 450 4MATIC
- 2025 MERCEDES\-BENZ GLE 450 4MATIC COUPE
- 2024 to 2025 MERCEDES\-BENZ GLE 450E 4MATIC
- 2020 to 2021 MERCEDES\-BENZ GLE 580
- 2022 to 2024 MERCEDES\-BENZ GLE 580 4MATIC
- 2020 MERCEDES\-BENZ GLS 450
- 2022 to 2025 MERCEDES\-BENZ GLS 450 4MATIC
- 2020 MERCEDES\-BENZ GLS 580 4MATIC
- 2022 to 2025 MERCEDES\-BENZ GLS 580 4MATIC
- 2023 MERCEDES\-BENZ GLS 600
- 2021 MERCEDES\-BENZ GLS450
- 2021 MERCEDES\-BENZ GLS580
- 2021 MERCEDES\-MAYBACH GLS 600
- 2022 to 2025 MERCEDES\-MAYBACH GLS 600 4MATIC

JSON: [/v1/bulletins/11026952](/v1/bulletins/11026952)

[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%20LI82.85-P-071623&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11026952&vehicle=Service%20bulletin%20LI82.85-P-071623)