Mercedes-Benz GLA 250 2019–2021 — technical service bulletin
Bulletin LI54.71-P-072473 · NHTSA communication 10191267 · issued Mar 29, 2021
Technical service bulletin
communication type
Lane Departure
component
2019–2021
model years
6
vehicle entries
Official summary
X247 code 233 - Blind Spot Assist inoperative (fault message in IC) - Fault code C110178 due Positioning of rear left radar sensor
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.