2024-2025 BMW “Check Engine Oil Level” Warning TSB

Owners of certain 2024-2025 BMW models, including the X5, X6, X7, XM, and 760i, may encounter a persistent "Check Engine Oil Level" warning message on their instrument cluster. This issue, detailed in BMW Service Information Bulletin SIB 11 03 25, specifically affects vehicles equipped with S68T and XB1T engines.

The bulletin, which is Revision 1 and supersedes the previous SI B11 03 25 dated May 2025, provides a diagnostic and repair procedure for this specific concern. It is crucial for owners to understand the potential cause and the recommended steps to address the "Check Engine Oil Level" warning.

Symptoms

The primary symptom owners will notice is the "Check Engine Oil Level" warning message appearing while driving. This warning typically occurs under specific conditions:

• Shortly after a detailed engine oil measurement has been performed.
• Shortly after engine oil has been topped up.
• Shortly after an engine oil service has been carried out.

Cause

BMW has identified the root cause of the "Check Engine Oil Level" warning as a Digital Motor Electronics (DME) calibration error. This error can lead to the message being displayed incorrectly, particularly if the engine oil level measurement has not been performed for a long time or if the vehicle is frequently driven short distances.

Important Warnings

BMW provides critical instructions for technicians and owners to prevent unnecessary repairs and ensure proper resolution of the "Check Engine Oil Level" warning:

• "Do not Exchange of the oil-level sensor." This explicitly states that replacing the oil-level sensor will not resolve the issue, as the problem stems from a DME calibration error, not a faulty sensor.
• "Please DO NOT use AIR's 'Packages' section to obtain the vehicle's engine oil 'type' information." Technicians are advised to refer to specific Service Information Bulletins (SI B11 01 21) and the AIR system's Operating Fluids section for correct engine oil specifications, rather than the 'Packages' section.

Repair Procedure Summary

The repair process outlined in SIB 11 03 25 involves determining the vehicle's current I-level (software integration level) and then proceeding based on whether an engine oil service is recommended or due. The procedure emphasizes software programming as a key step.

Scenario 1: Engine Oil Service Is NOT Recommended or Due

1. A comprehensive vehicle test is performed.
2. If the vehicle's I-level is not S18A-25-03-500 or higher, the vehicle must be programmed with ISTA 4.52.4X or a newer version.
3. An oil level measurement is conducted to determine the exact top-up quantity needed.
4. The engine oil is topped up as required.
5. The fault memory is cleared.

Scenario 2: Engine Oil Service IS Recommended or Due

1. A comprehensive vehicle test is performed.
2. If the vehicle's I-level is not S18A-25-03-500 or higher, the vehicle must be programmed with ISTA 4.52.4X or a newer version.
3. The engine oil service is carried out, including a Condition Based Service (CBS) reset.
4. The fault memory is cleared.

For both scenarios, BMW specifies that ISTA will automatically reprogram and code all programmable control modules that do not have the latest software. It is also critical to always connect a BMW-approved battery charger/power supply (as per SI B04 23 10) when performing any programming to maintain stable voltage.

Required Tools or Parts

For the topping-up procedure in Scenario 1, specific engine oil part numbers are listed:

• 83 21 5 A42 D33: 0W-30 LL01FE Bulk 209 Liter Drum
• 83 21 5 A42 D39: 0W-30 LL01FE Bulk Tanker

Up to 20 units (one-tenth liter) of oil may be needed. Technicians should refer to SI B11 01 21 for BMW ENGINE OIL specifications and the AIR system's Operating Fluids section for released motor oils for BMW Group engines.

Owner Action

If you own a 2024-2025 BMW X5, X6, X7, XM, or 760i with an S68T or XB1T engine and are experiencing the "Check Engine Oil Level" warning, it is recommended to schedule an appointment with an authorized BMW service center. Inform them about the persistent "Check Engine Oil Level" warning and mention BMW Service Information Bulletin SIB 11 03 25. The repair involves software updates and is typically covered under warranty.

NHTSA ID: 11020906