# Service bulletin LI05.10\-P\-075373

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: 10225807
- Published by NHTSA: 2022\-11\-04
- Manufacturer's number: LI05.10\-P\-075373
- Manufacturer's date: 2022\-10\-01
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Complaint Chirping or tapping noise originating in area of front crankshaft pulley when engine cold. Noise may lessen as engine reaches operating temperature. Attachments File Description M260 noise.mp4 Noise example Cause Harmonics from timing chain drive. Remedy Replace timing chain tensioner with part A2600502000. Note: This noise will not cause damage to the engine or other symptoms. The chain tensioner should only be replaced in the event of a customer complaint.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225807-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225807-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2019 to 2022 MERCEDES\-BENZ A 220
- 2020 to 2021 MERCEDES\-BENZ AMG A35
- 2020 to 2022 MERCEDES\-BENZ AMG CLA35
- 2017 MERCEDES\-BENZ AMG GLA35
- 2019 to 2022 MERCEDES\-BENZ CLA 250
- 2020 to 2022 MERCEDES\-BENZ GLA 250

JSON: [/v1/bulletins/10225807](/v1/bulletins/10225807)

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