Mercedes-Benz AMG GLC43 2019 — technical service bulletin
Bulletin LI54-30-P-069143 · NHTSA communication 10155145 · issued Feb 21, 2019
Technical service bulletin
communication type
Equipment
component
2019
model years
5
vehicle entries
Official summary
BR253 without navigation: time and date automatically reset themselves independently and randomly
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.