BMW 428I 2014–2015 — technical service bulletin
Bulletin 410114 · NHTSA communication 10148266 · issued Apr 1, 2014
Technical service bulletin
communication type
Structure
component
2014–2015
model years
4
vehicle entries
Official summary
Service Action: Repair Right Side Panel Corrosion Protection. The right side panel corrosion protection is not sufficient. The sheet metal plate clearance in the right side A-pillar area is too small for complete corrosion protection from the factory.
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.