Relay Mercedes C117 GLA X156 ML W166 W176 W246 5 Pins Yellow A0035421019

The Mercedes C117 GLA X156 ML W166 W176 W246 5-Pin Yellow Relay is an original component from the Relays group, designed for use in select Mercedes models. Its yellow, five-pin design ensures precise control of the vehicle's electrical circuits, maintaining factory safety and reliability standards.

Specifications and technical data

• SKU: A0035421019
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0035421019
• Substitutable numbers: A0035421019, A 003 542 10 19
• Color: Yellow
• Category: Relays

Relay Purpose and Function

The presented five-pin relay is used in the electrical system of Mercedes models from the C117, GLA X156, ML W166, W176, and W246 series. It is responsible for stable switching of selected circuits, relieving sensitive control elements and enabling safe operation of the vehicle's electrical systems.

Thanks to its construction compliant with manufacturer requirements, the relay works with the factory wiring harness, which helps maintain correct operating parameters for power and control systems.

Construction and Technical Features

The yellow housing facilitates quick identification of the component in the fuse box or relay module, which is particularly useful during diagnostics and servicing. The five pins provide extensive switching functionality, typical for solutions used in modern Mercedes vehicles.

As a component from the Relays category, the product has been designed for operation in an automotive environment, taking into account current loads, temperature changes, and vibrations occurring in the engine compartment and passenger cabin.

Benefits of Using an Original Mercedes Relay

• Maintains compatibility with the vehicle's factory electrical system.
• Reduces the risk of malfunction in circuits controlled by the relay.
• Easier diagnostics due to the distinctive yellow housing.
• Allows for the use of existing Mercedes service diagrams and technical documentation.

Choosing an original relay helps maintain electrical parameter consistency in the vehicle, which is important for both component durability and the proper functioning of comfort and safety systems.

Condition and Service Application

This item is a used part, sourced from disassembly, and offered as a cost-effective solution for maintenance repairs and restoring the functionality of electrical systems in Mercedes vehicles. This type of component is often used in brand-specific workshops where precise fitment to a particular reference number and adherence to factory operating parameters are crucial.

System Expansion and Selection of Other Relays

If you are planning a comprehensive repair or upgrade of the electrical system in your Mercedes and require other components from the same group, such as starter relays, light relays, or fan relays, please check the available parts in the Mercedes Relays category.

Practical Service Tips

When replacing a relay, pay attention to its correct seating in the socket and the condition of the contacts in the relay box. It is recommended to compare the pin layout and housing color with the removed element to avoid assembly errors and speed up service work.

For drivers interested in a broader perspective on the operation and repair of electrical components in their car, the guide article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers may be helpful, discussing practical aspects of selecting and installing used components.