BMW Mini Cooper R55 R55N R56 R56N LCi Ultra Sonic Module Alarm System 3449417

The Mini R55 R55N R56 R56N Ultrasonic Alarm Module is an original security system component designed for select Mini models. It is responsible for monitoring the vehicle's interior using ultrasonic sensors, working in conjunction with the factory alarm to enhance the car's protection level. This is a solution for drivers who want to maintain the full functionality of their factory anti-theft system.

Specifications and technical data

• SKU: 3449417
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 3456365
• Substitutable numbers: 65753456365, 3456365, 65753428405, 3428405, 65753449417, 3449417, 65753448501, 3448501, 65753450343, 3450343
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and Function of the Ultrasonic Module

The ultrasonic alarm module in Mini R55, R55N, R56, and R56N models is responsible for detecting movement inside the cabin after the alarm is armed. It emits ultrasonic waves and analyzes their reflection, allowing it to detect:

• doors or windows being opened from the inside after the system is armed,
• movement within the vehicle's cabin,
• attempts to interfere with the passenger compartment.

Thanks to this, the Mini alarm system reacts not only to breaches of locks or external sensors but also to movement inside the car, significantly increasing the level of security.

Benefits of Using an Original Mini Module

Choosing an original ultrasonic module for your Mini ensures proper compatibility with the vehicle's electrical system and electronics. Key benefits include:

• Full integration with the factory alarm – the module works with the comfort module and central locking system as intended by the manufacturer.
• Stable operation of ultrasonic sensors – accurate detection of cabin movement without an excessive number of false alarms.
• Perfect fit for R55, R55N, R56, R56N models – no need for modifications to the wiring or harnesses.

This component, from the Other category within the Mini OE range, is typically installed within the interior and is linked to the vehicle's security system.

Characteristics and Installation of the Alarm Module

The ultrasonic alarm module is an electronic part that communicates with other elements of the security system. In practice, this means:

• it operates based on signals from the alarm control unit and the comfort module,
• it is powered by the vehicle's electrical system and requires correct connection to factory connectors,
• its installation is usually limited to replacement in the location designated by the manufacturer.

When replacing, it is recommended that diagnostics and any necessary adaptation are performed using appropriate Mini service software, which confirms the module's correct communication with the rest of the system.

Product Condition and Practical Application

The offered module is from the Mini OE group and is a part removed from a vehicle, allowing for the preservation of the original manufacturer's specifications. This type of solution is particularly beneficial when:

• the factory alarm has stopped reacting to cabin movement,
• the ultrasonic module has been damaged after a collision or flooding,
• the component needs to be replaced with one compatible with the specific Mini model's equipment.

In many cases, restoring a functional ultrasonic module resolves issues with incorrect alarm operation, such as a lack of reaction to movement inside the car or, conversely, overly frequent, unjustified siren activation.

Related Products and Technical Knowledge

If you are looking for other components from the Other Mini category for your car, check out our offer, where you will find a wide selection of components such as Other Mini.

To compare solutions used in various sports and premium brands, and to better understand the differences in the construction of powertrains and chassis, it is worth reading an article comparing top RS versions with series models: Audi RS vs. other models – what lies under the hood and chassis?.