Mercedes-Benz A 220 2019–2020 — technical service bulletin
Bulletin LI54.21-P-070658 · NHTSA communication 10170539 · issued Dec 17, 2019
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
4
vehicle entries
Official summary
SRS Message Displayed in Instrument Cluster
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.