# Service bulletin LI77.21\-P\-075807

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: 10244745
- Published by NHTSA: 2023\-11\-03
- Manufacturer's number: LI77.21\-P\-075807
- Manufacturer's date: 2023\-10\-02
- NHTSA component: STRUCTURE; VISIBILITY:SUN/MOON ROOF ASSEMBLY

## NHTSA's summary

Sliding sunroof panel of panoramic sliding sunroof reversed \(temporarily, once, multiple times\) during closing process without entrapment event. Sensitive parameterization of the automatic reversing function of the panoramic roof. Perform SW update of panoramic roof control unit \(PSD, A98, TSSR254\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244745-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244745-9999.pdf)

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

## Components

Body and frame, Glass, wipers and mirrors, Sunroof

## Vehicles listed

- 2020 to 2024 MERCEDES\-BENZ AMG GLC43
- 2020 to 2022 MERCEDES\-BENZ AMG GLC63
- 2020 to 2023 MERCEDES\-BENZ AMG GLC63 S
- 2024 MERCEDES\-BENZ AMG GLC63 S E
- 2020 to 2024 MERCEDES\-BENZ GLC 300
- 2020 MERCEDES\-BENZ GLC 350
- 2020 to 2021 MERCEDES\-BENZ GLC 350 E

JSON: [/v1/bulletins/10244745](/v1/bulletins/10244745)

[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%20LI77.21-P-075807&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10244745&vehicle=Service%20bulletin%20LI77.21-P-075807)