Mercedes-Benz C 300 2013–2019 — technical service bulletin
Bulletin LI01.20-P-076894 · NHTSA communication 10243308 · issued Sep 12, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2013–2019
model years
26
vehicle entries
Official summary
Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 â Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction The partial-load ventilation valve (a part of the intake line assembly) may not work as intended Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. Do not perform software update of N3/10 Engine control unit at this time. This LI will be updated once the software solution is available. This LI is in relation to NCU dated 8/31/2023 "E
Vehicles covered
- 2017 Mercedes-Benz C 300
- 2018 Mercedes-Benz C 300
- 2015 Mercedes-Benz C300
- 2016 Mercedes-Benz C300
- 2018 Mercedes-Benz C 300 4MATIC
- 2018 Mercedes-Benz C 350 E
- 2016 Mercedes-Benz C350E
- 2017 Mercedes-Benz C350E
- 2014 Mercedes-Benz E250
- 2015 Mercedes-Benz E250
- 2016 Mercedes-Benz E250
- 2018 Mercedes-Benz E 300
- 2016 Mercedes-Benz E300
- 2017 Mercedes-Benz E300
- 2018 Mercedes-Benz GLC 300
- 2019 Mercedes-Benz GLC 300
- 2016 Mercedes-Benz GLC300
- 2017 Mercedes-Benz GLC300
- 2018 Mercedes-Benz GLC 350 E
- 2019 Mercedes-Benz GLC350E
- 2013 Mercedes-Benz GLK250
- 2014 Mercedes-Benz GLK250
- 2015 Mercedes-Benz GLK250
- 2018 Mercedes-Benz SLC 300
- 2019 Mercedes-Benz SLC 300
- 2017 Mercedes-Benz SLC300
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.