BMW M4 2015–2017 — technical service bulletin
Bulletin B513515 · NHTSA communication 10146831 · issued Sep 1, 2016
Technical service bulletin
communication type
Structure
component
2015–2017
model years
3
vehicle entries
Official summary
"Service Action: Repair Roof Side Frame Paint. 1. Use Repair Instructions RA 51 13 280 ""Remove and install or replace the trim strip on the roof frame on the left or right side"" to remove the left roof side trim.Paint may be blistered / damaged in the area on the left side roof side frame."
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.