Mercedes-Benz A 220 2019 — technical service bulletin
Bulletin LI41 10-P-070118 · NHTSA communication 10164809 · issued Aug 5, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019
model years
1
vehicle entries
Official summary
Humming, throbbing, droning or vibration in various operating states
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.