# Service bulletin LI77.21\-P\-074971

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: 10231033
- Published by NHTSA: 2023\-02\-03
- Manufacturer's number: LI77.21\-P\-074971
- Manufacturer's date: 2023\-01\-04
- NHTSA component: STRUCTURE

## NHTSA's summary

Complaint Sliding sunroof panel of panoramic sliding sunroof reversed \(temporarily, once, multiple times\) during closing process without entrapment event. Cause Cause: It is not possible to save the relearning process for force progression after each actuation. A, e.g. mechanical sluggishness caused by aging cannot be compensated for here. Further analyses: Information from the control unit log of the panoramic roof control unit \(TSSR223\) is still required in a TIPS case. Remedy Remedy: Normalize panoramic roof with diagnostic system and carry out teach\-in run for automatic reversing function. IF the above remedy does not solve the issue \(namely\): • The teach\-in run for the automatic reversing function of the panoramic roof via XENTRY has still NOT been carried out

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231033-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231033-9999.pdf)

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

## Components

Body and frame

## Vehicles listed

- 2022 MERCEDES\-BENZ AMG EQS
- 2022 MERCEDES\-BENZ C 300
- 2023 MERCEDES\-BENZ EQE
- 2022 MERCEDES\-BENZ EQS 450
- 2022 MERCEDES\-BENZ EQS 580
- 2023 MERCEDES\-BENZ EQS450

JSON: [/v1/bulletins/10231033](/v1/bulletins/10231033)

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