BMW 3 X1 E84 E91 Ultra Sonic Burglar Alarm System Sensor Module 9200944

BMW 3 X1 E84 E91 Ultra Sonic Burglar Alarm System Sensor Module is an original component from the Electronic control modules and controllers group, designed to work with the factory BMW security system. It enables precise monitoring of the vehicle's interior, increasing the level of anti-theft protection and integrating seamlessly with the car's existing electrical installation.

Specifications and technical data

• SKU: 9200944
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9149672
• Substitutable numbers: 65759260874, 9260874, 65759244135, 9244135, 65756974374, 6974374, 65759200944, 9200944, 65759149672, 9149672, 65756972065, 6972065
• Category: ECUs & Computer Modules

Purpose and function of the ultrasonic module

The ultrasonic alarm module in a BMW is responsible for monitoring the cabin space using sensors operating in the ultrasonic band. When the alarm is armed, it monitors changes in the interior volume, reacting to movement, window opening, or attempts to interfere with the passenger space. As a result, it serves as an important supplement to perimeter sensors, increasing the effectiveness of the entire security system.

In the case of the BMW X1 E84 and E91 series, this module works with the factory alarm controller, communicating with it through the vehicle's wiring and transmitting information about detected breaches. Proper configuration allows for the maintenance of full system functionality, including acoustic and optical signaling.

Construction and integration with BMW electronics

As an element from the Electronic control modules and controllers category, the ultrasonic module is designed to operate within the BMW electronic network, maintaining the parameters required by the manufacturer. It includes an ultrasonic transceiver circuit and electronics responsible for signal analysis and communication with the main alarm controller.

The original design ensures:

• consistency with the vehicle's electrical architecture,
• proper cooperation with factory software,
• stable operation under typical vehicle interior operating conditions.

Thanks to this, the module can be used both as a replacement part in the event of a failure and when expanding an existing security system with interior monitoring functionality.

Part number selection and compatibility

When selecting an ultrasonic module for a specific BMW, it is crucial to pay attention to the manufacturer's markings and interchangeable part numbers, which allow for confirming compatibility with a given model year and equipment version. In practice, this means it is possible to use different factory references within the same module family, provided that hardware and software compatibility is maintained.

To safely plan a replacement, it is worth using the vehicle's VIN and BMW service documentation. A guide on used automotive electronics may also be helpful – it discusses in detail the issues of selection by part numbers, HW/SW compatibility, and practical aspects of installation. More information can be found in the article on choosing used ECU modules and sensors.

Condition, installation, and service application

The offered module comes from the BMW parts group and is a used item, which in practice means it was previously operated in a vehicle and then removed for reinstallation. This type of solution is often chosen by professional workshops and conscious users who are looking for original components at a more favorable price than new replacements.

During installation, it is recommended to:

• apply BMW service procedures regarding work with vehicle electronics,
• disconnect the power supply before starting work,
• check the correctness of connections and perform potential adaptation in the diagnostic system after installation.

Such an approach minimizes the risk of communication errors in the car's electronic network and allows for the quick restoration of full alarm functionality.

Expanding the BMW security system

If you are planning a comprehensive repair or upgrade of the security electronics area in your BMW and need other elements from the same group, such as alarm controllers, comfort modules, or interior monitoring sensors, check the available parts in the BMW electronic control modules and controllers category.

Selecting the right electronic components allows you to build a coherent, effective vehicle protection system that works with factory comfort and safety features, maintaining the performance standards characteristic of BMW.