2022 BMW iX/X1 Alarm System Unlocking TSB

Symptoms

Owners of 2022 BMW iX and X1 vehicles may experience an issue where, shortly after the alarm system is activated and the doors are locked, the doors will unlock. This is accompanied by a distinct "double beep" acoustic confirmation from the vehicle. This behavior indicates a problem with the vehicle's alarm system functionality.

Cause

BMW Service Information Bulletin SIB 65 18 25 identifies the root cause as unfavorable software within the Basic Central Platform (BCP). This software fault leads to the BCP falsely detecting occupancy inside the vehicle, primarily using data from the interior camera, which then triggers the doors to unlock and the "double beep" sound.

Repair Procedure Summary

Addressing the BMW iX alarm unlocking issue involves updating the vehicle's software. The preferred method for this is a Remote Software Update (RSU). Technicians should refer to SI B09 01 25 for detailed instructions on performing an RSU.

If an RSU is not available for the specific vehicle, the software update must be performed using the ISTA diagnostic and programming system. The procedure begins by determining the vehicle's current I-level (integration level).

If the I-level is currently 25-07-530 or a more recent version, the vehicle should not be programmed. Instead, standard diagnostic procedures should be followed. However, if the I-level is older than 25-07-530, the vehicle must be programmed to I-level 25-07-530 or higher using ISTA 4.54.3x (released July 23, 2025) or a newer version.

The programming process requires connecting a BMW-approved battery charger/power supply (refer to SI B04 23 10) and the programming system (ISTA 4) to the vehicle. After programming, the technician must accept and work through the measures plan, follow any rework lists, perform a vehicle test, and clear any fault memory.

Important Warnings

Owners should be aware that if their vehicle's I-level is already at 25-07-530 or a more recent version, the vehicle should not undergo programming. Attempting to program a vehicle with an adequate I-level will not resolve the issue and may lead to unnecessary work.

Required Tools or Parts

To perform the software update, technicians will need access to:

• ISTA 4 (Integrated Service Technical Application) diagnostic and programming system.
• ISTA 4.54.3x (or higher) software version for programming.
• A BMW-approved battery charger/power supply to maintain stable voltage during the programming process, as detailed in SI B04 23 10.

Warranty Information and Claim Procedure

For customer-related concerns regarding the BMW iX alarm unlocking, the repair falls under Repair Code 6138450200, which covers "Control unit, Basic Central Platform (BCP) Software error / internal device fault." This software solution is typically covered under the terms of the BMW New Vehicle Limited Warranty or the BMW Certified Pre-Owned Program.

Technicians will use specific labor operations for claiming purposes, including 00 00 006 or 00 00 556 for vehicle testing, 61 21 528 for supporting voltage, and 61 00 730 for programming/encoding control units and deleting fault memory. Additional labor codes like 61 00 006* or 00 58 500* may apply for diagnostic work time. Technicians should refer to SI B01 01 20 or B01 07 20 for guidance on documenting and claiming diagnostic work time.

Owner Action

If you own a 2022 BMW iX or X1 and are experiencing the alarm system unlocking doors with a "double beep" after activation, you should contact your authorized BMW dealership. Explain the symptoms you are observing. The dealership will be able to diagnose the issue and perform the necessary software update as outlined in BMW Service Information Bulletin SIB 65 18 25.

Source: NHTSA ID 11021819.