Customers may report issues with the alarm system not functioning correctly
BMW technical service bulletin B650426 for 2025 BMW 430I, 2025 BMW 840I and 2025 BMW Z4 M40I.
- Bulletin number
- B650426
- Component
- Unknown or other
- Summary
- Customers may report issues with the alarm system not functioning correctly. These concerns may includeone or more of the following: Missing confirmation sound (function cannot be selected or deselected in the Central InformationDisplay (CID) menu). Alarm system deactivated (interior mirror light off). Alarm does not function. DWA LED without function after locking (no flashing/flashing). Acoustic acknowledgement is unavailable or cannot be enabled/disabled via the CID menu underdoors/windows. Tilt alarm sensor “SINE” cannot be reached via diagnostics.
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