BMW 335D 2009–2013 — technical service bulletin
Bulletin 170209 · NHTSA communication 10152349 · issued Sep 1, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2013
model years
8
vehicle entries
Official summary
"Oil Leak from Turbocharger Charge Air Hose. The customer may complain of an oil leak from the engine area. The ""Service Engine Soon"" lamp may also be illuminated with fault code ""4674 - FMO injection quantities-observer"" stored. CAUSE The molded seal in the charge air pipe may have been cut by debris abrasions, causing an external leak of air and oil in the charged air system of the turbocharger. An improved seal has been developed to correct this issue."
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.