# Service bulletin LI01.20\-P076894

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: 11005276
- Published by NHTSA: 2024\-07\-26
- Manufacturer's number: LI01.20\-P076894
- Manufacturer's date: 2024\-07\-08
- NHTSA component: ENGINE

## NHTSA's summary

Complaint Check engine light illuminated Fault code stored in N3/10 control unit\- P052E71 – Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction Cause The partial\-load ventilation valve \(a part of the intake line assembly\) may not work as intended. Remedy Model year 2018 C300 \| Model year 2016\-2018 GLC300 and E300 \| ALL model year SLK/SLC300 and hybrid variants Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. This LI will be updated once the software solution is available for model year 2018 C300 and 2016\-2018 GLC300 and E300 vehicles. Model year 2015\-2017 C300 \| Model year 2019 GLC300 and E300 Perform software update for N3/10 Engine control unit. Replacement of intake line assembly is not required.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11005276-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11005276-9999.pdf)

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

## Components

Engine

## Trouble codes named

P052E

## Vehicles listed

- 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 to 2021 MERCEDES\-BENZ GLC 350 E
- 2016 MERCEDES\-BENZ GLC300
- 2019 to 2020 MERCEDES\-BENZ SLC 300
- 2017 MERCEDES\-BENZ SLC300
- 2016 MERCEDES\-BENZ SLK300

JSON: [/v1/bulletins/11005276](/v1/bulletins/11005276)

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