Accepted Answer

i would look for a bad pcv valve hear is a tech service bulletin

SI B 11 08 03 Engine   October 2007 Technical Service   This Service Information bulletin supersedes S.I. B11 08 03 dated January 2006 [NEW] designates changes to this revision SUBJECT Oil Separator - Cold Climate Conditions   MODEL E39 5 Series, E46 3 Series, E53 X5, E60 5 Series, E83 X3, E85 Z4 with M54 Engine   SITUATION Certain areas of the US experience extremely cold climate conditions during the winter months. A small number of vehicles in the above series listed have experienced problems ranging from leaking or broken valve covers to complete engine failure.   CAUSE Moisture accumulating in the engine oil separator, hose to oil dipstick guide tube or the orifice in the dipstick guide tube can freeze. When this occurs, depending on the position of the internal valve, this may either cause high crankcase pressures (stuck closed) resulting in valve cover leakage/breakage or cause an oil hydro-lock condition (stuck open) which could result in engine damage.   [NEW] CORRECTION In case of a customer complaint, replace the crankcase vent valve, crankcase vent hoses and dipstick guide tube.

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1.	Replace the oil separator and hoses (1) with the new insulated style (2).
2.	If the vehicle is already equipped with the new insulated crankcase ventilation valve and hose then only replace the dipstick guide tube with part number from list by model below.
3.	If the vehicle is not equipped with the new insulated crankcase ventilation valve and hose then replace those parts with the updated style and replace the dipstick guide tube with part number from list by model.

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[NEW] PARTS INFORMATION

[NEW] WARRANTY INFORMATION

Covered under the terms of the BMW New Vehicle Limited Warranty.

Please refer to the latest KSD for all applicable labor operations and allowances.

If the appropriate labor operation is not contained in KSD, then a work time labor operation should be used.

Defect Code 11 15 03 14 00

 

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Expert:	eauto
Pos. Feedback:	100.0 %
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Answered:	4/22/2009

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