Mercedes-Benz C 300 2015–2020 — technical service bulletin
Bulletin ELW- Intake Line · NHTSA communication 10241531 · issued Aug 24, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2015–2020
model years
27
vehicle entries
Official summary
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 (â MBUSAâ ) is extending the warranty coverage on the intake line assembly in certain Model Year (â MYâ ) 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: â ¢Under certain circumstances, the partial-load ventilation valve (a part of the intake line assembly) may not work as intended,resulting in the illumination o
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
- 2018 Mercedes-Benz E 300
- 2019 Mercedes-Benz E 300
- 2017 Mercedes-Benz E300
- 2016 Mercedes-Benz GLC
- 2017 Mercedes-Benz GLC
- 2018 Mercedes-Benz GLC 300
- 2019 Mercedes-Benz GLC 300
- 2016 Mercedes-Benz GLC300
- 2017 Mercedes-Benz GLC300
- 2018 Mercedes-Benz GLC 350
- 2019 Mercedes-Benz GLC 350
- 2018 Mercedes-Benz GLC 350 E
- 2020 Mercedes-Benz GLC 350 E
- 2019 Mercedes-Benz GLC350E
- 2018 Mercedes-Benz SLC 300
- 2019 Mercedes-Benz SLC 300
- 2020 Mercedes-Benz SLC 300
- 2017 Mercedes-Benz SLC300
- 2016 Mercedes-Benz SLK300
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.