BMW X5 E53 Radio Remote Alarm Key Fob Ring Antenna Lock 433 MHz SET 8379345

BMW X5 E53 Immobilizer Reader Key 433 Mhz Set is a specialized component from the Switches, Control Elements, and Ignition Switches group, designed for the security system in the BMW X5 E53 model. The set, operating at a frequency of 433 MHz, works with the key and immobilizer, responsible for authorizing vehicle start-up and communication with the body electronics.

Specifications and technical data

• SKU: 8379345-1
• Mark: BMW (Genuine OE)
• Condition: For parts or not working
• OEM Part Number: 8379345
• Substitutable numbers: 8379345, 61358379345, 6964556, 61356964556, 0403532, 61350403532, 8363099, 61358363099, 0141223, 61350141223, 6900016, 61356900016, 3332004, 6 955 749, 6955749
• Category: Switches & Controls

Purpose and Function in the BMW Security System

The presented immobilizer reader with key is an element of the BMW electronic security system, responsible for identifying the transponder and transmitting the signal to the vehicle's control units. In practice, this means cooperation with modules responsible for the start-up lock, which is crucial for protection against unauthorized vehicle start-up.

As part of the original BMW system, the component is structurally adapted to the electrical architecture of the X5 E53, which facilitates integration with the existing wiring harness and other comfort and control modules.

Technical Characteristics of the 433 MHz Set

The set operates at a radio frequency of 433 MHz, used in many remote control and immobilizer solutions in BMW vehicles. This configuration enables:

• stable communication between the key and the immobilizer reader,
• cooperation with the factory start-up lock system,
• integration with the control system within the steering column and ignition switch.

Thanks to the use of an original solution from the Switches, Control Elements, and Ignition Switches group, compliance with the operating logic of BMW security systems is maintained, which is important for diagnostics and potential programming.

Technical Condition and Service Application

The component is offered in a condition described as For parts or not working, which means it is primarily treated as a parts base or a donor for further service work. It can be used, among other things, for:

• obtaining housings, connectors, or electronic fragments for repairing another module,
• comparative analysis during immobilizer system diagnostics,
• training and testing purposes in workshops specializing in BMW electronics.

Due to this condition, before any attempt to restore full functionality, a detailed verification by a workshop dealing with automotive electronics and security systems is recommended.

Compatibility, Reference Numbers, and Brand

The product is an original component of the BMW brand, which ensures structural compatibility with the vehicle's factory system. The technical specification includes the OEM part number and associated interchangeable numbers, which facilitate matching to the specific BMW X5 E53 configuration and verifying compatibility in parts catalogs.

Additionally, the specification table contains the SKU identifier, allowing for unambiguous linking of the offered set to the product card in the store's system and in service documentation.

Support with Selection and Expansion of the Control System

If you are planning a comprehensive repair or modernization of the control and security area in your BMW and need other elements from the same group, such as ignition switch modules, steering column switches, or additional control elements, check the available parts in the BMW Switches, Control Elements, and Ignition Switches category.

When working with used vehicle electronics, it is worth considering the specifics of individual premium brands. For a comparison of approaches to original dismantled components, you can read an article describing the service strategy for another premium brand: Used Parts for Mercedes – Original Dismantled Components as a Way to Reduce Service Costs.