Complaint Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 – Positive...
Mercedes-Benz technical service bulletin LI01.20-P-076894 for 2015-2018 Mercedes-Benz C300, 2016, 2018-2019 Mercedes-Benz GLC 300 and 2017-2019 Mercedes-Benz E300 and others.
- Bulletin number
- LI01.20-P-076894 (LI01.20-P-076894)
- Component
- Engine
- 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 2015-2018 (non-hybrid), and ALL model year 172 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 hybrid and model year 2015-2018 vehicles. Model year 2019 (Except model 172 and hybrid variants) Perform software update for N3/10 Engine control unit. Replacement of intake line assembly is not required. This LI is in relation to NCU dated 8/31/2023 "Emission Extended Warranty – Intake Line Assembly".
Owners of these vehicles have filed 483 complaints in the engine category.
Vehicles covered
- Mercedes-Benz C300 2015-2018 2015201620172018
- Mercedes-Benz GLC 300 2016, 2018-2019 201620182019
- Mercedes-Benz E300 2017-2019 201720182019
- Mercedes-Benz C350E 2016-2018 201620172018
- Mercedes-Benz GLC 350 E 2018, 2020-2021 201820202021
- Mercedes-Benz SLC 300 2017-2020 2017201820192020
- Mercedes-Benz SLK300 2016 2016
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