Computer/Controls - Oil Level Sensor Malfunction Displ.

SI B12 06 11
Engine Electrical Systems

May 2011
Technical Service

This Service Information bulletin supersedes SI B12 06 11 dated April 2011.

[NEW] designates changes to this revision

SUBJECT
F25 N52T - Oil Level Sensor Malfunction Warning Is Displayed

MODEL
F25 [NEW] (X3 xDrive28i) with the N52T engine produced from 11/1/2010 to 5/12/2011

SITUATION

The Check Control message "Oil Level Sensor Malfunction" is erroneously displayed; however, there is no oil level sensor (QLT) related fault shown in ISTA/D.

This problem mainly occurs during colder months in conjunction with short distance driving.

Other symptoms might include:

^ Oil level cannot be calculated and displayed

^ CBS forecast for the engine oil service is reduced

The DME fault 1C5008: Oil level sensor permittivity has occurred and can be seen in FASTA data.

This permittivity fault is set if, aggravated by frequent short-distance driving, increased water content from the combustion process enters the engine oil and QLT sensor.

CAUSE
DME software application

CORRECTION
Do not replace the QLT sensor.

[NEW] Program the vehicle using only ISTA/P 2.41.3 or later.

[NEW] Vehicle integration (new): F025-11-03-510 or later

[NEW] Note that ISTA/P will automatically reprogram and code all programmable control modules that do not have the latest software.

[NEW] For information on programming and coding with ISTA/P, refer to CenterNet / Aftersales Portal / Service / Workshop Technology / Vehicle Programming.

Verify that the oil level is correct and displayed properly.





[NEW] WARRANTY INFORMATION