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, designed to operate within the electrical system of Mercedes vehicles. The relay's grey body ensures clear identification in the fuse box, and the OEM design allows for proper integration with the factory wiring harness.

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 function in the electrical system

The TYCO relay used in the Mercedes ML W163 model is responsible for the precise switching of selected electrical circuits while maintaining stable operating parameters. As a component in the Electronic control modules and controllers category, it works with the low-current control system and higher-load circuits, relieving sensitive electronic components.

A solution of this type allows for:

• safe switching on and off of circuits with higher power consumption,
• reduction of contact wear in switches and control modules,
• maintenance of repeatable system operating parameters under typical operating conditions.

Construction and functional features

The grey relay housing facilitates visual distinction from other elements in the electrical box, which speeds up diagnostics and potential replacement. The design is adapted for installation in the factory socket, which promotes proper positioning in the system and adequate cooling of the component.

The advantages of this solution include:

• a compact form enabling installation in the original socket,
• a contact architecture designed for compatibility with the Mercedes ML W163 system,
• a housing resistant to typical operating conditions in the electrical compartment.

Benefits of using an original relay

Using a TYCO relay dedicated to the Mercedes ML W163 allows for maintaining the consistency of electrical parameters with the vehicle manufacturer's specifications. The appropriate circuit switching characteristics promote stable operation of cooperating modules and reduce the risk of malfunctions in dependent systems.

Choosing a component from the same design group as the factory part means:

• greater predictability of the electrical system's behavior,
• better compatibility with the existing wiring harness and control modules,
• reduced risk of problems resulting from mismatched replacements.

Condition and service application

The offered relay comes from the secondary market, making it a cost-effective solution while maintaining the original manufacturer's specifications. This type of component is particularly useful in service repairs when it is necessary to replace a single sub-assembly without interfering with the entire wiring harness or control module.

The relay can be used both for typical maintenance repairs and for diagnosing systems where intermittent power supply issues to selected receivers occur.

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

More about used automotive electronics

When selecting used components in the field of electronics, it is worth paying attention to compatibility with the vehicle's electrical architecture and the method of testing components before installation. To better understand when choosing electronics from the secondary market is justified and how to minimize risks, read the tips in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.