Power Supply Module BMW F20 F21 F30 F31 i3 I01 Integrated Relay 7614585

Visual condition of the part 

The product shows signs of use visible in the photos. 

Power Supply Module BMW F20 F21 F30 F31 i3 I01 Integrated Relay is an original electrical system component designed for the 1 Series F20 and 3 Series F30 models. As an OEM BMW component, it ensures consistency with the factory installation architecture, stable relay control, and predictable power system behavior. Using this module allows for a technically correct repair without the need for costly replacement of entire wiring harnesses or additional sub-assemblies.

Specifications and technical data

• SKU: 7614585
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7614585
• Substitutable numbers: 12637614585, 7614585
• Category: Other Starters, Alternators, ECUs & Wiring

Function and role of the power supply relay control module

The presented controller is responsible for controlling the power supply to relays in selected electrical circuits of BMW F20 and F30 vehicles. Its task is to manage control signals so that individual electrical consumers are switched on and off in accordance with the vehicle's system logic. This ensures that the electrical system operates under stable conditions and that loads are distributed according to the manufacturer's specifications.

The module works in conjunction with other control units in the car, transmitting and receiving signals within the vehicle's bus system. A correctly selected OEM component minimizes the risk of communication errors, incorrect relay switching, or fault messages appearing on the instrument cluster.

Why it is worth using an original BMW controller

Using an original BMW power supply relay controller is crucial for maintaining the proper operation of the electrical system. The OEM component is designed for a specific vehicle platform, taking into account load characteristics, comfort system logic, and safety features. In practice, this means:

• reliable compatibility with the factory wiring harness and connectors,
• consistency with the software of other controllers in the vehicle,
• reduced risk of coding and adaptation issues,
• maintaining predictable behavior of electrical systems after repair.

A used OEM component is often a reasonable compromise between cost and quality, especially for vehicles that are several years old, where both technical correctness and repair economy are important.

Scope of application and part selection

Power Supply Module BMW F20 F21 F30 F31 i3 I01 Integrated Relay has been developed for a specific generation of the 1 Series and 3 Series, so when selecting, it is worth paying attention to compatibility with the body version and equipment configuration. The module should be treated as a component that works with other controllers, so it is important to match it to a specific vehicle according to BMW service documentation.

In practice, when replacing this type of component, workshops often use computer diagnostics to verify communication correctness after installation. A properly selected controller allows for the restoration of the correct operation of circuits powered by relays without the need for interference with the factory installation.

Condition, origin, and benefits of choosing a used part

The offered module comes from the group of original BMW parts and is classified as a used item. These types of components are frequently chosen by services specializing in the BMW brand because they allow for maintaining factory specifications while reducing repair costs. In the case of electronic controllers, it is particularly important that they come from a reliable source and are compatible with the vehicle platform.

Before installation, a standard diagnostic procedure is recommended, as well as – if required by the specific model – appropriate coding or adaptation in the vehicle. This allows the module to fully cooperate with the existing electronic architecture, and the relay power supply system regains operational stability.

Technical knowledge expansion and related categories

For those interested in comparing solutions used in different brands and vehicle segments, including advanced powertrain and braking systems, an article discussing structural differences in sports models may be helpful. More information can be found in the material: Audi RS vs other models – what is hidden under the hood and chassis?.

If you are planning a comprehensive repair or upgrade of the electrical system area in your BMW and need other elements from the same group, such as control modules, relays, or wiring harnesses, check the available parts in the category Other BMW.