# Service bulletin LI20.10\-P\-076206

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: 11017687
- Published by NHTSA: 2025\-05\-03
- Manufacturer's number: LI20.10\-P\-076206
- Manufacturer's date: 2025\-05\-01
- NHTSA component: ENGINE

## NHTSA's summary

Complaint Customer states that the CEL is lit in the instrument cluster Cause Debris in the coolant system. Remedy An updated thermostat will be installed. It must be requested through a TIPS case. In your request include a contact name, phone number, and shipping address for the thermostat. New screws must also be installed with the revised thermostat, PN N000000006341 \(qty 5\) will be used in place of the existing M8 screws. The new screws must be torqued to 8 Nm. Besides these two revisions, follow the instructions in WIS for removal and installation. After replacement, fill and bleed the coolant system per the instructions in WIS for the model that is being worked on.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017687-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017687-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2023 to 2024 MERCEDES\-BENZ AMG C43
- 2023 MERCEDES\-BENZ AMG C43 4MATIC
- 2020 to 2024 MERCEDES\-BENZ AMG CLA45
- 2021 to 2023 MERCEDES\-BENZ AMG GLA45

JSON: [/v1/bulletins/11017687](/v1/bulletins/11017687)

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