Mercedes-Benz A 220 2020 — technical service bulletin
Bulletin NCU-2022070018 · NHTSA communication 10222486 · issued Sep 30, 2022
Technical service bulletin
communication type
Structure
component
2020
model years
4
vehicle entries
Official summary
Mercedes-Benz AG (â MBAGâ ), the manufacturer of Mercedes-Benz, has determined that in certain MY 2020 A-Class and GLB-Class (177 and 247 platform) vehicles, the contact surface of the upper hinges to the B-pillar on the right and left rear doors may have been arched. As a result, water could intrude into the gap between the Bpillar and door hinge, which may result in corrosion. What Weâ re Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will rework the upper hinges of the B-pillar on the left and right rear doors.
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.