BMW 1 3 X1 Series E81 E87 E90 E91 E92 Ultra Sonic Module Alarm System 6946528

The BMW E81 E87 E90 E91 E92 Alarm Sensor Module is an original security system component designed for select BMW 1 and 3 Series models. Thanks to its factory design, it ensures proper integration with the vehicle's electronics and stable operation of the alarm system. This is the solution for users who want to professionally restore the full functionality of their factory alarm.

Specifications and technical data

• SKU: 6946528
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6946528
• Substitutable numbers: 65759244134, 9244134, 65759200943, 65756972064, 65756946528, 65759149671, 65756974373, 65756963651, 9200943, 6972064, 6946528, 9149671, 6974373, 6963651
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and Function of the Alarm Sensor Module

The presented alarm sensor module is a security system component responsible for monitoring selected parameters of the vehicle's surroundings and transmitting signals to the alarm control unit. In BMW E81, E87, E90, E91, and E92 series vehicles, it works with the factory electrical system, preserving the original system logic.

The module is part of the comfort and safety system, and its proper functioning contributes to:

• efficient detection of unauthorized access attempts to the vehicle,
• correct communication with other components of the alarm system,
• maintaining factory security features without the need for universal solutions.

Benefits of Using an Original BMW Module

Using an original BMW alarm sensor module helps avoid common problems associated with aftermarket replacements, such as bus communication errors, false alarms, or incompatibility with the vehicle's software. This component has been specifically designed to work with BMW electronics, resulting in:

• consistency with the factory electrical architecture,
• stable operation of the security system,
• easier diagnostics in case of potential faults.

Additionally, thanks to its assigned interchangeable part numbers, the module can be used as a compatible replacement for several factory versions, simplifying part selection for repairs and upgrades.

Item Condition and Installation Aspects

The alarm sensor module is offered as a used part, allowing for an economical repair of the security system while maintaining the original manufacturer's specifications. Before installation, it is recommended to verify compatibility with the part number and software of the specific vehicle, as well as perform post-installation diagnostics to confirm correct communication with other control units.

Due to the nature of electronic components, installation should be performed with electrostatic discharge protection measures and in accordance with BMW service procedures. In many cases, after replacing the module, adaptation or coding using appropriate service software is necessary.

Selection and Compatibility within the BMW Range

When selecting an alarm sensor module for BMW E81, E87, E90, E91, and E92 series, it is crucial to compare the OEM part number and available interchangeable numbers with the vehicle's specifications. This ensures precise matching to the specific equipment configuration and model year. It is advisable to use manufacturer catalogs or professional part identification tools to guarantee full compatibility with the car's electrical system.

If you are planning a comprehensive repair or upgrade of the electronic security area in your BMW and need other parts from the same group, such as additional modules, sensors, or control units, check the available parts in the Other BMW category.

Technical Support and Development of Security Systems

Advanced security systems, sophisticated control units, and comfort modules are now standard in premium cars. For comparison of solutions used in different brands and segments, and for a better understanding of the impact of electronics on performance and safety, it is worthwhile to consult expert materials. A good reference point is an article discussing the structural and equipment differences in sports models, available at the link Audi RS vs. Other Models – What Lies Under the Hood and Chassis?.