Engine - Turbocharger Failure: Oil Supply Line Blockage

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) Technical Service Bulletin # 110711 Date: 110701

Engine - Turbocharger Failure: Oil Supply Line Blockage

SI B11 07 11

Engine

July 2011

Technical Service

SUBJECT

Turbocharger Failure: Oil Supply Line Blockage

MODEL

All

SITUATION

The customer complains of loss of performance and turbocharger noise.

CAUSE

The turbocharger oil supply may be restricted, causing oil starvation and resulting in the seizing of the turbocharger assembly.

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 147

PROCEDURE

Upon replacement of the turbocharger assembly, always remove and inspect the oil supply lines for blockage or restriction. Ensure that the lines are

not collapsed or kinked. Replace the lines if a blockage or restriction is detected. Inspection of the oil supply lines will avoid repeated failure of the

turbocharger assembly.

WARRANTY INFORMATION

This service information bulletin is intended to provide technical diagnostic and/or repair information only.

If a warranty claim results from the above repairs, it should be submitted following the regular warranty claim procedures..