Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

The Mercedes C140 Brake Pump Fuse Relay is a specialized electrical component responsible for the reliable power supply to the brake pump system in Mercedes vehicles. A correctly selected relay stabilizes the circuit's operation, enhances brake system safety, and reduces the risk of failures caused by current overloads.

Specifications and technical data

• SKU: A0015426519
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0015426519
• Substitutable numbers: A0015426519, A 001 542 65 19
• Category: Relays

Purpose and Function in the Braking System

The Mercedes C140 Brake Pump Fuse Relay operates within the brake pump power circuit, acting as an intermediate element controlling current flow. By using a dedicated relay, the electrical system's load is distributed in a controlled manner, promoting stable pump operation and improving the entire system's resistance to momentary current spikes.

A correctly selected relay in this application:

• supports the proper engagement and disengagement of the brake pump under load,
• reduces the risk of overheating of wires and contacts in the installation,
• helps maintain repeatable braking system performance parameters under varying operating conditions.

Construction, Compatibility, and Identification Parameters

This component belongs to the Relays category, meaning it is designed for use in control circuits with increased reliability requirements. The relay's construction is adapted to the electrical architecture of Mercedes vehicles, facilitating installation in its factory-designated location and ensuring correct connection to the wiring harness.

The product has a dedicated OEM part number and associated interchangeable numbers, allowing for precise verification of compatibility with a specific vehicle configuration. Before purchasing, it is advisable to compare the markings with the service documentation or the removed component to confirm full compatibility with your specific car model.

Condition, Service Application, and Benefits of Installation

The offered relay is a part from the aftermarket, allowing for economical repair of the braking system while maintaining the original manufacturer's specifications. This type of solution is particularly beneficial for vehicles where maintaining the factory electrical architecture without using replacements of uncertain parameters is a priority.

In practice, installing the correct relay in the brake pump circuit provides the following benefits:

• increased reliability of pump power supply under typical road conditions,
• reduced risk of random system interruptions due to unstable contacts,
• maintenance of consistency with the original Mercedes electrical system design.

Installation and Operational Guidelines

When replacing the relay, it is recommended to work according to the vehicle manufacturer's service procedures, observing the correct order of disconnecting and connecting the electrical system. Pay attention to:

• the condition of the relay socket (no signs of burning, deformation, or loose contacts),
• the cleanliness of the contacts and the correct seating of the component in its base,
• verification of the brake pump system's correct operation after installation is complete.

This approach allows for the full utilization of the offered relay's potential and reduces the risk of the fault recurring due to installation issues rather than problems with the component itself.

System Expansion and Selection of Related Components

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other parts from the same group, such as additional relays, control modules, or circuit protection elements, check the available parts in the Mercedes Relays category.

For users interested in a broader approach to powertrain system diagnostics and component selection, a guide describing practical methods for assessing wear and selecting parts for complex systems may be helpful. You can find it in the article Clutch and Dual-Mass Flywheel – Diagnostics and Part Selection for the Powertrain, which organizes service knowledge and facilitates informed purchasing decisions.