2024 BMW X1 Double Beep Alarm System Unlocking Doors TSB

Symptoms of the "Double Beep" Alarm Issue

Owners of affected 2024 BMW X1 models may notice a specific behavior from their vehicle's alarm system. When the alarm is activated and the doors are locked, the doors will unexpectedly unlock shortly after. This unlocking is accompanied by a "double beep" acoustic confirmation from the vehicle. This unexpected unlocking and audible signal indicate the 2024 BMW X1 double beep alarm system issue.

Cause of the Problem

The root cause of the "double beep" alarm system unlocking doors is identified as unfavorable software within the Basic Central Platform (BCP). This software falsely detects occupancy inside the vehicle, primarily using data from the interior camera. This erroneous detection triggers the system to unlock the doors and provide the "double beep" acoustic confirmation.

Important Warnings and Owner Information

BMW has issued Service Information Bulletin SIB 65 18 25 to address this specific software issue. Owners should be aware of certain conditions related to the repair. If your vehicle's current I-level software version is already at or newer than 25-07-530, the vehicle should not be programmed further, and standard diagnostic procedures should be followed instead.

It is crucial that a BMW-approved battery charger/power supply, such as those referenced in SI B04 23 10, is always connected to the vehicle during any programming or software update procedure. This ensures stable voltage and prevents potential issues during the update process.

Repair Procedure Summary

The primary solution for the 2024 BMW X1 double beep alarm issue involves updating the vehicle's software. BMW recommends performing a Remote Software Update (RSU) as the preferred method to resolve this. Instructions for the RSU procedure are detailed in SI B09 01 25.

If a Remote Software Update is not available for your vehicle, the software update must be performed using the ISTA diagnostic system. Technicians will first determine the vehicle's current I-level. The vehicle then needs to be programmed to I-level 25-07-530 or higher, utilizing ISTA 4.54.3x (released July 23, 2025) or a newer version.

The programming process includes several steps:

• Connecting a battery charger to maintain voltage.
• Connecting the programming system (ISTA 4) to the vehicle.
• Determining the necessary measures plan.
• Accepting and fully working through the measures plan, which involves programming and encoding all affected control units.
• Following any required rework lists.
• Performing a vehicle test and clearing any fault memory codes as needed, depending on the rework list.

After the programming is successfully completed, the functionality of the alarm system will be checked to confirm the resolution of the "double beep" acoustic confirmation and door unlocking issue.

Required Tools or Parts

The repair procedure necessitates specific tools and software. Technicians will require access to the ISTA 4 diagnostic and programming system, specifically version 4.54.3x or higher. Additionally, a BMW-approved battery charger/power supply is mandatory to ensure a stable power source throughout the software update process.

Warranty and Claim Information

For this repair, BMW has assigned Repair Code 6138450200, described as a "Control unit, Basic Central Platform (BCP) Software error / internal device fault." Dealers will use specific labor operation codes for claiming warranty work, such as 00 00 006 or 00 00 556 for vehicle testing, 61 21 528 for battery support, and 61 00 730 for programming and encoding control units. These labor operations ensure proper compensation for the work performed under the BMW New Vehicle Limited Warranty or the BMW Certified Pre-Owned Program. Further guidance on claiming procedures can be found in SI B01 01 20 and B01 07 20.

Source: NHTSA ID 11020948