BMW 535I 2010–2016 — technical service bulletin
Bulletin B370115 · NHTSA communication 10156210 · issued Apr 1, 2015
Technical service bulletin
communication type
Suspension
component
2010–2016
model years
14
vehicle entries
Official summary
Service Action: Replace Left Rear Air Spring. Torsional stress can cause the threaded fabric of the left air spring bellow to rupture and lose its airtightness. If the air spring is not airtight, the vehicle will lean on one side.
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.