N20 Engine: Repeated Juddering or Surging While Accelerating
BMW technical service bulletin B111012 for 2012-2013 BMW 328I, 2011-2014 BMW X3 and 2009-2014 BMW Z4 and others.
- Bulletin number
- B111012
- Component
- Engine
- Summary
- N20 Engine: Repeated Juddering or Surging While Accelerating. The vehicle judders or surges repeatedly while accelerating in hot ambient temperatures between 3,000 RPM and 5,000 RPM. The Service Engine Soon lamp is not illuminated, and no fault codes are stored in the vehicle memory related to this complaint. CAUSE The EPDW (electropneumatic pressure convertor) for the turbocharger wastegate valve is binding internally.
Owners of these vehicles have filed 903 complaints in the engine category.
Vehicles covered
- BMW 328I 2012-2013 20122013
- BMW X3 2011-2014 2011201220132014
- BMW Z4 2009-2014 200920102011201220132014
- BMW 528I 2011-2014 2011201220132014
- BMW 335I 2012-2013 20122013
- BMW 535I 2011-2014 2011201220132014
- BMW 550I 2011-2014 2011201220132014
- BMW X1 SAV 2012-2013 20122013
- BMW 320I 2013 2013
- BMW M5 2013-2014 20132014
- BMW 535D 2014 2014
- BMW 535I US 2011 2011
- BMW Active Hybrid 3 2012-2013 20122013
- BMW Active Hybrid 5 2013 2013
- BMW 525d Xdrive 2014 2014
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