# Service bulletin LI77.21\-P\-077779

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: 11000544
- Published by NHTSA: 2024\-05\-30
- Manufacturer's number: LI77.21\-P\-077779
- Manufacturer's date: 2024\-05\-04
- Campaign id or software version: LI77.21\-P\-077779
- NHTSA component: VISIBILITY/WIPER; STRUCTURE:BODY

## NHTSA's summary

Sliding sunroof panel of panoramic sliding sunroof reversed \(temporarily, once, multiple times\) during closing process without entrapment event. Cause remains open. For analysis, the information from the control unit log of the panoramic roof control unit \(TSSR254\) is required via a TIPS case. Further analyses Requirement: • The teach\-in run for the automatic reversing function of the panoramic roof via XENTRY has still NOT been carried out • SW\-SNR is A254 902 9702 with parameter data set A254 903 2902 or A254 903 4802 Please perform the following steps: 1. Create a TIPS case 2. Create control unit log of panoramic roof control unit \(TSSR223, A98, PSD\) \(prerequisite: add\-on 25071\) and attach to TIPS case

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11000544-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11000544-9999.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

- 2023 to 2024 MERCEDES\-BENZ AMG GLC43
- 2023 MERCEDES\-BENZ AMG GLC63 S
- 2024 MERCEDES\-BENZ AMG GLC63 S E
- 2023 to 2024 MERCEDES\-BENZ GLC 300
- 2024 MERCEDES\-BENZ GLC 300 COUPE

JSON: [/v1/bulletins/11000544](/v1/bulletins/11000544)

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