# Warranty extension EW \- Intake Line Assembly

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: 11031589
- Published by NHTSA: 2026\-04\-27
- Manufacturer's number: EW \- Intake Line Assembly
- Manufacturer's date: 2024\-07\-09
- NHTSA component: ENGINE

## NHTSA's summary

This NCU replaces the prior NCUs issued on August 25, 2023, August 31, 2023 respectively and, contains clarification on parts ordering. In our continuing efforts to assure the proper performance of Mercedes\-Benz products and to enhance the satisfaction of our customers, Mercedes\-Benz USA, LLC \(“MBUSA”\) is extending the warranty coverage on the intake line assembly in certain Model Year \(“MY”\) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles \(whichever occurs first\) due to the following condition: •Under certain circumstances, the partial\-load ventilation valve \(a part of the intake line assembly\) may not work as intended,resulting in the illumination of the check engine Malfunction Indicator Lamp \(‘MIL’\). A faulty partial\-load ventilation valvemight also increase exhaust gas emission. Please be advised that all repairs being claimed under this extended warranty must have a Quick Test uploaded with the following fault code information and may be audited. •P052E71 – Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has amalfunction.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11031589-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11031589-9999.pdf)

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

## Components

Engine

## Trouble codes named

P052E

## Vehicles listed

- 2018 MERCEDES BENZ C 300 4MATIC
- 2017 to 2018 MERCEDES\-BENZ C 300
- 2018 MERCEDES\-BENZ C 350 E
- 2015 to 2016 MERCEDES\-BENZ C300
- 2016 to 2017 MERCEDES\-BENZ C350E
- 2018 to 2019 MERCEDES\-BENZ E 300
- 2017 MERCEDES\-BENZ E300
- 2018 to 2019 MERCEDES\-BENZ GLC 300
- 2018 MERCEDES\-BENZ GLC 350 E
- 2020 MERCEDES\-BENZ GLC 350 E
- 2016 to 2017 MERCEDES\-BENZ GLC300
- 2019 MERCEDES\-BENZ GLC350E
- 2018 to 2020 MERCEDES\-BENZ SLC 300
- 2017 MERCEDES\-BENZ SLC300
- 2016 MERCEDES\-BENZ SLK300

JSON: [/v1/bulletins/11031589](/v1/bulletins/11031589)

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