Mercedes-Benz C 300 2018–2023 — technical service bulletin
Bulletin LI27.60-P-080167 · NHTSA communication 11028813 · issued Feb 12, 2026
Technical service bulletin
communication type
Power Train
component
2018–2023
model years
24
vehicle entries
Official summary
Complaint The vehicle cannot disengage “P” (Park), and a red warning message appears in the instrument cluster. Cause Only vehicles with transmission NAG3C 725.0 and engine M264 with transmission software version 19A/B are affected. (see attachments for how to verify software level) Excessive pressure in the disengaging clutch during monitoring of the parking lock (see attachments for diagram). Various parking lock monitoring errors and R/D monitoring errors occur, only with engine M264 and software versions 19A and 19B. Remedy Perform IPR and check for available VGS control unit software (see
Vehicles covered
- 2018 Mercedes-Benz C 300
- 2019 Mercedes-Benz C 300
- 2020 Mercedes-Benz C 300
- 2021 Mercedes-Benz C 300
- 2022 Mercedes-Benz C 300
- 2023 Mercedes-Benz C 300
- 2018 Mercedes-Benz C 300 4MATIC
- 2021 Mercedes-Benz C 300 4MATIC
- 2022 Mercedes-Benz C 300 4MATIC
- 2023 Mercedes-Benz C 300 4MATIC
- 2020 Mercedes-Benz E 350
- 2021 Mercedes-Benz E 350
- 2022 Mercedes-Benz E 350
- 2023 Mercedes-Benz E 350
- 2019 Mercedes-Benz GLC 300
- 2020 Mercedes-Benz GLC 300
- 2021 Mercedes-Benz GLC 300
- 2022 Mercedes-Benz GLC 300
- 2023 Mercedes-Benz GLC 300 4MATIC
- 2019 Mercedes-Benz GLE 350
- 2020 Mercedes-Benz GLE 350
- 2021 Mercedes-Benz GLE 350
- 2022 Mercedes-Benz GLE 350
- 2023 Mercedes-Benz GLE 350
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.