2021-2024 BMW X1, X6, X7, XM CBS Data Not Stored in Key

BMW has issued Service Information Bulletin (SIB) 61 27 23 to address a concern where Conditioned Based Services (CBS) data is not properly stored in the vehicle key. This can lead to situations where the Key Reader, used by service technicians, cannot retrieve current vehicle data or the maintenance schedule does not match the vehicle's actual status. This issue affects various 2021-2024 BMW models, including the X1, X6, X7, and XM.

Symptoms

Owners or technicians may notice that when a Key Reader is used to access CBS information from the customer's key, no current vehicle data is available. Alternatively, the data retrieved may not align with the vehicle's actual maintenance schedule. This indicates that the BMW X7 CBS data not stored or similar models are experiencing this problem.

Cause

The root cause of this issue has been identified as software errors within the Basic Central Platform (BCP) of the affected vehicles. These errors prevent the CBS data from being correctly written to and stored in the vehicle key.

Important Warnings for Service

BMW provides crucial instructions for technicians performing this repair:

• Do not press the brake pedal while performing the key update procedure. Pressing the brake pedal will cause the vehicle to start and cancel the Manual Remote Control Update process.
• Always connect a BMW-approved battery charger/power supply (refer to SI B04 23 10) to the vehicle during programming and coding to maintain stable voltage.
• Parts replacement will not provide a solution for this specific issue. The problem is software-related, and replacing components will not resolve it.

Repair Procedure Summary

The correction for the BMW X7 CBS data not stored issue involves programming and encoding the vehicle, specifically updating the Basic Central Platform (BCP). The general procedure outlined in SIB 61 27 23 is as follows:

1. Determine Current I-level: Technicians must first determine the vehicle's current integration level (I-level) using either the AIR (Aftersales Information Research) application or the Key Reader/AWP (Aftersales Workplace) applications.
2. Check Integration Level: The current I-level is then compared against specific target integration levels. For G06, G07, G09 models, the target is S18A-23-07-523 or higher. For G70 models, it's G070-23-07-523 or higher. For U11 models, the target is U006-23-07-520 or higher.
3. Program Vehicle: If the vehicle's current I-level is lower than the required target, the vehicle must be programmed using ISTA 4.42.1x or a newer version (released June 27, 2023, or later). ISTA will automatically reprogram and code all programmable control modules that do not have the latest software.
4. Manual Key Update: After the software update, a manual key update procedure must be performed for all available keys. This involves specific steps like sitting in the vehicle, locking/unlocking doors, setting the correct date/time, pressing and holding the central locking unlock button, pressing the start/stop button three times, and then holding the key against the steering column key symbol until an audible