BMW 1 Series 2011 — technical service bulletin
Bulletin 510313 · NHTSA communication 10149436 · issued Feb 1, 2013
Technical service bulletin
communication type
Suspension
component
2011
model years
1
vehicle entries
Official summary
ActiveE: Rear Underbody Panel Modification. The customer may complain about rubbing/rattling noises coming from the rear axle area when driving over speed bumps. CAUSE The rear underbody panel may be chafing against the rear sub-frame components or suspension thrust arms.
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.