BMW 1 3 4 Series F20 F21 F30 F31 Radio Remote Control Receiver 434 MHZ 8706502

BMW F20 F21 F30 Remote Control Receiver Module 434 MHZ 8706502 is an original part from the Electronic Control Modules and Controllers group, responsible for wireless communication between the key fob and the vehicle's electronics. It ensures stable operation of the remote central locking system and other comfort functions, based on the 434 MHz frequency. This solution is designed for users who expect precise operation of comfort systems in BMW F-series cars.

Specifications and technical data

• SKU: 8706502
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8706502
• Substitutable numbers: 61358706502, 8706502, 61358802918, 8802918, 61356844138, 6844138, 61356806871, 6806871, 61357928663, 7928663, 61357928646, 7928646, 61357928644, 7928644, 61359626113, 9626113, 61359397846, 9397846, 61359374504, 9374504, 61359319081, 9319081, 61319312636, 9312636, 61319304413, 9304413
• Category: ECUs & Computer Modules

Module Purpose and Function

The presented controller acts as the central receiver for the key fob signal, working with the factory BMW electrical system. It is responsible for decoding radio signals, verifying them, and transmitting them to the appropriate vehicle systems, such as door locks or comfort opening and closing functions.

By operating at a frequency of 434 MHz, the module ensures stable communication under typical operating conditions, limiting susceptibility to external interference. The use of an original controller maintains consistency with the vehicle's software and the operating logic of factory safety systems.

Benefits of Using an Original BMW Controller

Using an original module from the Electronic Control Modules and Controllers group translates to high compatibility with the vehicle's installation and predictable comfort system behavior. This reduces the risk of key fob pairing problems, communication errors, or occasional loss of remote range.

Key advantages include:

• maintaining the factory logic for central locking and comfort functions,
• consistency with the electrical architecture and software of BMW F-series,
• possibility of integration with existing key fobs after an appropriate adaptation procedure,
• reduction of incompatibility risks typical for universal aftermarket parts.

Usage Characteristics and Installation

The module is designed to operate within the factory BMW environment, which facilitates its integration with the vehicle's wiring harness. Installation involves placing the controller in its designated location and connecting it to the original connectors, followed by coding or adaptation procedures in the vehicle if necessary.

Used condition means the part comes from a disassembly and has been previously operated in another vehicle, which is a typical solution for original electronic modules. With proper installation and configuration, this allows for the economical restoration of full remote control system functionality without the need for expensive new components.

Application in Service Practice

This type of controller is particularly useful for diagnosing faults related to no response to the key fob signal, unstable central locking operation, or range issues. Replacing the module with a functional unit is one of the basic service procedures, allowing for quick verification of whether the receiving electronics or other installation components are the source of the problem.

In workshop practice, using original BMW modules also facilitates subsequent diagnostic support – the controller is correctly recognized by the factory service software, allowing for error reading, software updates, and configuration of comfort functions according to the specific vehicle's equipment.

Expanding the Control System in BMW

If you are planning a comprehensive repair or upgrade of the comfort electronics area in your BMW and need other parts from the same group, such as comfort modules, central locking controllers, or radio signal receivers, check the available parts in the BMW Electronic Control Modules and Controllers category.

To compare how premium manufacturers approach maintaining brand character in the context of electronics and interior equipment, it is worth reading an article describing how original components affect the driving experience – more information can be found in the material Audi and Emotion in Pure Form. How Used Parts Help Maintain the Brand's DNA?.