Mercedes ML W163 Relay 4-Pin Grey Tyco A0025422619

Mercedes ML W163 Relay 4-Pin Grey Tyco is a component from the Electronic control modules and controllers group, responsible for stable switching of electrical circuits in the vehicle's systems. The relay's grey housing ensures clear identification in the fuse box, and the design developed for Mercedes ML W163 models allows for precise compatibility with the factory installation.

Specifications and technical data

• SKU: A0025422619
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0025422619
• Substitutable numbers: A0025422619, A 002 542 26 19
• Color: Grey
• Category: ECUs & Computer Modules

Purpose and role in the electrical system

The Tyco relay used in the Mercedes ML W163 acts as an intermediate control element between electronic modules and power consumers, relieving the load on sensitive control circuits. This ensures the electrical system remains stable, and individual vehicle functions can be switched on and off with the appropriate power reserve.

The component belongs to the Electronic control modules and controllers group, meaning it works in conjunction with other power and signal management components in the vehicle. The grey housing makes it easy for technicians to quickly locate the correct relay during diagnostics or replacement.

Construction and functional features

The grey color of the housing is characteristic of this relay version and helps maintain order in the relay and fuse box. Its compact form allows for installation in the factory socket without the need for modifications, which helps preserve the vehicle's original electrical architecture.

As a Mercedes brand product, the relay has been designed for compatibility with the electrical parameters of the ML W163 installation, which translates into predictable performance under load and correct cooperation with other control modules.

Benefits of using a used relay

A used Tyco relay for the ML W163 allows for an economical repair of the electrical system while maintaining the manufacturer's original specifications. In many cases, this is a more advantageous solution than installing replacements with uncertain parameters, especially in sensitive electronically controlled circuits.

Selecting the component according to the manufacturer's markings and parameters from the Electronic control modules and controllers group facilitates the consistency of the entire system, which is important for both reliability and subsequent computer diagnostics.

If you want to better understand how to safely use used electronics in a car, select modules by markings, and ensure compatibility, the Global Parts guide will be helpful: used car electronics – second-hand modules and sensors.

Integration with the vehicle's other electronics

The relay works with other controllers and modules present in the ML W163, responsible for the correct switching of selected circuits. Because it belongs to the same functional group as other control modules, the consistency of the electrical system's operating logic is maintained.

A properly selected relay reduces the risk of overloads and unstable operation of consumers, which is particularly important in vehicles equipped with extensive onboard electronics. The grey housing facilitates quick service, reducing the time needed to identify the component during diagnostic work.

Support with selection and system expansion

If you are planning a comprehensive repair or upgrade of the electrical installation area in your Mercedes and need other elements from the same group, such as additional relays, control modules, or auxiliary controllers, check the available parts in the Mercedes electronic control modules and controllers category.

For a comparison of approaches to maintaining the character of premium brands using original components, you can read the Global Parts article Audi and pure emotion – how used parts help maintain the brand's DNA, which shows how important it is to use properly selected modules and control elements in other brands as well.