# 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: 11007961
- Published by NHTSA: 2024\-09\-24
- Manufacturer's number: LI77.21\-P\-075807
- Manufacturer's date: 2024\-09\-21
- NHTSA component: VISIBILITY/WIPER; STRUCTURE:BODY

## NHTSA's summary

Complaint Sliding sunroof panel of panoramic sliding sunroof reverses \(temporarily, once, multiple times\) during closing process without entrapment event: a\) from tilt position b\) from sliding position Cause a\) Sensitive parameterization of the automatic reversing function of the panoramic roof b\) Under analysis Remedy a\) Leave the sliding sunroof panel of the panoramic roof in the rear sliding position \(fully open position\) for at least 30 minutes \(or overnight if necessary\), then perform commissioning of the panoramic roof control unit \(PSD, A98, TSSR254\) b\) Perform commissioning of panoramic roof control unit \(PSD, A98, TSSR254\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11007961-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11007961-9999.pdf)

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

## Components

Body and frame, Glass, wipers and mirrors, Wipers and washers

## Vehicles listed

- 2024 MERCEDES\-BENZ AMG GLC43
- 2023 to 2024 MERCEDES\-BENZ GLC 300
- 2024 MERCEDES\-BENZ GLC 300 COUPE

JSON: [/v1/bulletins/11007961](/v1/bulletins/11007961)

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