# Warranty extension EW \- Camshaft Adjuster

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: Warranty extension
- NHTSA id: 11031636
- Published by NHTSA: 2026\-04\-28
- Manufacturer's number: EW \- Camshaft Adjuster
- Manufacturer's date: 2021\-05\-17
- NHTSA component: ENGINE

## NHTSA's summary

This NCU replaces the prior NCUs issued on October 30, November 09 \& November 20, 2020 and contains clarification on the replacement of the Camshaft Adjuster under this extended warranty. Mercedes\-Benz AG \(“MBAG”\), the manufacturer of Mercedes\-Benz vehicles, has determined that on certain Model Year \(“MY”\) 2012\-2015 Mercedes\-Benz Model 204 and 172 vehicles \(C250 and SLK250\), the warranty on the camshaft adjuster will be extended from the original 4 years/50,000 miles to 10 years/120,000 miles \(whichever occurs first\) from the original warranty start date. This extended warranty applies to the replacement of the camshaft adjuster if the vehicle falls within the scope of the extended warranty \(e.g., within the time/mileage limitations and where replacement of the part is for a warrantable condition, as set forth below\). The following damage codes and parts kit can only be claimed for the replacement of the camshaft adjuster: Damage Code: 05050 – Camshaft adjustment, intake camshaft Damage Code: 05052 – Camshaft adjustment, exhaust camshaft Parts: A 271 050 21 00 80 – Camshaft adjuster, kit \(ensure all parts in the kit are replaced when performing repair\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-11031636-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-11031636-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2012 to 2015 MERCEDES\-BENZ C250
- 2014 to 2015 MERCEDES\-BENZ SLK250
- 2013 MERCEDES\-BENz SLK250

JSON: [/v1/bulletins/11031636](/v1/bulletins/11031636)

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