Mercedes Benz

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) Technical Service Bulletin # 130409 Date: 130303 Fuel System - Misfire DTC's Set/Rough Running Cold Start SI B13 04 09 Fuel Systems March 2013 Technical Service This Service Information bulletin supersedes SI B13 04 09 dated February 2013. [NEW] designates changes to this revision SUBJECT [NEW] N54 Engine: Diagnosis of Cold Start Rough Running with Misfire Faults MODEL [NEW] F01 [NEW] F02 [NEW] E82 [NEW] E88 [NEW] E89 [NEW] E90 [NEW] E92 [NEW] E93 [NEW] E60 [NEW] E61 [NEW] E71 SITUATION The customer may complain that during the cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated. Various misfire fault codes (e.g., 29CC, 29D2, 29D1, 29D0, 29C0, 29CF) may be stored in the DME control module. The engine rough running complaint can be reproduced on a cold start in the workshop. During the course of diagnosis, the spark plugs, removed from the misfiring cylinders afier the problem ...