# Service bulletin LI01.20\-P\-078446

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: 11008712
- Published by NHTSA: 2024\-10\-08
- Manufacturer's number: LI01.20\-P\-078446
- Manufacturer's date: 2024\-10\-04
- NHTSA component: ENGINE; ELECTRICAL SYSTEM

## NHTSA's summary

Complaint Check engine light on. One of the below fault codes is current in the engine control module \(N3/10\). P04DB29, P04DB31, P04DB79 Cause Open circuit or high resistance to crankcase vent line contact Remedy 1. Check the electrical connector for the relevant vent line contact switch noted below. Refer to attached photos of connection locations. 2. Ensure the bolted connection is secure and bolt can be torqued \(9Nm\). 3. Check continuity from vent line connection to ME control unit. Repair wire if damage is found. • The circuit from ME provides 5V and is pulled to 0V when the ground connection is intact. M260 P04DB31\- S88/15 P04DB79\- S88/16 M264 P04DB31\- S88/15 P04DB79\- S88/16 P04DB29\- S88/17 M270/M274 P04DB79\- S88/5 Note: This repair is not warrantable if the connection was left loose during previous repair/maintenance.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11008712-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11008712-9999.pdf)

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

## Components

Electrical system, Engine

## Trouble codes named

P04DB

## Vehicles listed

- 2018 MERCEDES BENZ A 220
- 2018 MERCEDES BENZ C 300 4MATIC
- 2019 to 2022 MERCEDES\-BENZ A 220
- 2020 to 2021 MERCEDES\-BENZ AMG A35
- 2020 to 2024 MERCEDES\-BENZ AMG CLA35
- 2019 MERCEDES\-BENZ AMG CLA45
- 2024 to 2025 MERCEDES\-BENZ AMG GLA 35
- 2021 to 2023 MERCEDES\-BENZ AMG GLA35
- 2021 to 2024 MERCEDES\-BENZ AMG GLB35
- 2017 to 2023 MERCEDES\-BENZ C 300
- 2020 MERCEDES\-BENZ C 350
- 2018 MERCEDES\-BENZ C 350 E
- 2015 to 2016 MERCEDES\-BENZ C300
- 2014 MERCEDES\-BENZ C350
- 2016 to 2017 MERCEDES\-BENZ C350
- 2016 to 2017 MERCEDES\-BENZ C350E
- 2018 to 2024 MERCEDES\-BENZ CLA 250
- 2013 to 2017 MERCEDES\-BENZ CLA250
- 2018 to 2019 MERCEDES\-BENZ E 300
- 2020 to 2023 MERCEDES\-BENZ E 350
- 2021 MERCEDES\-BENZ E 350 E
- 2016 to 2017 MERCEDES\-BENZ E300
- 2014 to 2024 MERCEDES\-BENZ GLA 250
- 2020 to 2024 MERCEDES\-BENZ GLB 250
- 2018 to 2023 MERCEDES\-BENZ GLC 300
- 2018 MERCEDES\-BENZ GLC 350
- 2020 MERCEDES\-BENZ GLC 350
- 2018 MERCEDES\-BENZ GLC 350 E
- 2020 to 2021 MERCEDES\-BENZ GLC 350 E
- 2016 to 2017 MERCEDES\-BENZ GLC300
- 2019 MERCEDES\-BENZ GLC350E
- 2019 to 2023 MERCEDES\-BENZ GLE 350
- 2020 to 2021 MERCEDES\-BENZ GLE 350 E
- 2020 MERCEDES\-BENZ GLE 450
- 2018 to 2020 MERCEDES\-BENZ SLC 300
- 2017 MERCEDES\-BENZ SLC300
- 2016 MERCEDES\-BENZ SLK300

JSON: [/v1/bulletins/11008712](/v1/bulletins/11008712)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20LI01.20-P-078446&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11008712&vehicle=Service%20bulletin%20LI01.20-P-078446)