Mercedes-Benz AMG C43 2020–2021 — technical service bulletin
Bulletin LI54.10-P-07407 · NHTSA communication 10206064 · issued Dec 2, 2021
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
10
vehicle entries
Official summary
Eco start/stop nonfunctional due to 12V battery
Vehicles covered
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.