Diesel Eng. - Oil Leaks/MIL ON/Code 4674 Set

SI B 170209
Cooling Systems

November 2009
Technical Service

This Service Information bulletin supersedes SI B17 02 09 dated July 2009.
[NEW] designates changes to this revision

SUBJECT
Oil Leak from Turbocharger Charge Air Hose

MODEL
E70, E90 with M57Y diesel engine

SITUATION
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.

PROCEDURE
Remove the charge air pipe that connects the turbocharger to the intercooler. Thoroughly clean all mating surfaces and the charge air pipe.





^ Replace the seal (1) with P/N 11 61 8 506 786 and reinstall the charge air pipe.





PARTS INFORMATION








WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Warranty.





Disclaimer