BMW Z4 2009–2016 — technical service bulletin
Bulletin B513815 · NHTSA communication 10147876 · issued Dec 1, 2015
Technical service bulletin
communication type
Structure
component
2009–2016
model years
8
vehicle entries
Official summary
Door Brake Makes Squeaking Noise. The customer may complain of a squeaking noise when opening or closing either front door. Debris inclusions imbed into the door brake slide mechanism.
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.