Engine Controls - Engine Low Oil Level Warning
SI B 11 07 03Engine
March 2004
Technical Service
Advance Information
This Service Information bulletin supersedes S.I. B11 07 03 dated February 2004.
[NEW] designates changes to this revision
SUBJECT
Engine Low Oil Level Warning With Ignition Off
MODEL
[NEW] E39 (M54, M62TU) with Xenon lights (option 522) produced in 03/03
[NEW] B53 (M54, M62TU) with Xenon lights (option 522) from 10/02 up to 03/03
MODEL II
All with M52TU, M54, 554, M56, M62, S62, and M73 Engines
SITUATION
In certain instances the customer may complain of the low oil level light on or a low oil level message in the check control after the ignition has been turned off. Checking the oil level with the dipstick shows the correct oil level.
Important Note:
For the complaint of "low oil level message displayed while driving, on X5 4.4 up to 10/02 production", refer to Service Measure B 11 200 04 (January '04).
CAUSE I
Coding data error in Light Check Module IV (LCM IV).
CAUSE II
The oil level sensor has been contaminated, reducing the capability of the sensor to accurately determine oil level.
CORRECTION FOR CAUSE I
[NEW] On a customer complaint basis only, recode the LCM module with DIS CD 34, or higher.
CORRECTION FOR CAUSE II
[NEW] On a customer complaint basis only, replace the oil level sensor and refill engine with fresh oil.
PROCEDURE II
Ensure the engine is warm. Loosen oil filter cover to allow engine oil to drain into oil pan. Raise vehicle on hoist. Remove any underbody paneling or reinforcement as necessary to gain access to the sensor. Drain the oil. Disconnect the plug connection (1) and unscrew the three nuts (2) fastening the sensor to the oil pan. Clean the sealing surface of the oil pan in the location of the sensor. Replace the sensor and gasket ring with new parts. Reinstall the underbody paneling or reinforcement and lower vehicle. Tighten the oil filter housing cover and refill crankcase to proper level with new oil. Do not reuse the original oil!
PARTS INFORMATION
WARRANTY INFORMATION FOR CAUSE I
[NEW] Covered under the terms of the BMW New Vehicle Limited Warranty.
WARRANTY INFORMATION FOR CAUSE II
[NEW] Covered under the terms of the BMW New Vehicle Limited Warranty.