Mercedes W117 W156 W176 W242 W246 Electrical Fuse Relay Box A2465403803

Mercedes W117 W156 W176 W242 W246 Fuse Box A2465403803 is an original electrical system component designed for installation in the front left part of the vehicle. This fuse box from the Fuses and Fuse Boxes category ensures organized circuit routing and stable protection for key electrical consumers in Mercedes cars of the mentioned body series. A used OEM component allows for a technically correct replacement of a damaged module without altering the original wiring harness.

Specifications and technical data

• SKU: A2465403803-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2465403803
• Substitutable numbers: A2465403803, A 246 540 38 03, A 246 540 00 24
• Location on the vehicle: Front, Left
• Part type: Fuse Box
• Category: Fuses & Fuse Boxes

Purpose and Function in the Electrical System

The fuse box in Mercedes W117, W156, W176, W242, and W246 models is responsible for the logical distribution of power to individual circuits and their protection with appropriate fuses. Its placement in the front - left side of the vehicle area facilitates service access and integration with the main engine compartment wiring harness.

This component plays several important roles in the electrical system:

• it serves as a central point for protecting circuits against overload and short circuits,
• it ensures organized routing of wires and connectors,
• it facilitates diagnostics due to the clear arrangement of fuse sockets,
• it reduces the risk of electrical system damage resulting from improper modifications.

Construction and Compatibility with Mercedes Models

The offered fuse box is a component specifically designed for selected Mercedes models, which translates to the correct placement of sockets, connectors, and mounting points. Dedicated vehicle placement: Front, Left means that the housing design, brackets, and connector routing are adapted to the factory mounting location in the engine compartment.

Thanks to this:

• it fits original body mounting points and brackets,
• it allows for correct connection of factory electrical harnesses,
• it maintains the original wire routing, which reduces the risk of chafing and damage,
• it ensures compliance with the manufacturer's service documentation.

Benefits of Using an Original Fuse Box

Choosing an original Mercedes fuse box from the Fuses and Fuse Boxes category is a solution that minimizes compatibility issues and eliminates the need for electrical system adaptations. A used OEM component retains the factory connector geometry, which is particularly important in modern vehicles with complex electronics.

Key advantages include:

• reliable fit for a specific body series without the need for custom brackets or harness modifications,
• preservation of the original circuit division and protection logic,
• easier diagnosis of electrical faults due to compliance with factory schematics,
• reduced risk of communication errors between control modules.

Condition, Service Application, and Installation

The offered fuse box is a used component, which in service practice often represents a reasonable compromise between repair cost and maintaining original quality. This type of component is particularly useful for repairs after mechanical damage, flooding, or overheating of the factory fuse box.

When installing, pay attention to:

• correct seating in the factory mounting points on the front left side of the vehicle,
• accurate connection of all connectors according to harness markings,
• checking the condition of the fuses before the first start-up after replacement,
• verifying the correct operation of the main electrical consumers after completing the work.

Related Products and Technical Knowledge

If you are planning comprehensive electrical system service for your Mercedes and also need other components from the fuses and fuse boxes category for this brand, check the available parts in the Mercedes Fuses and Fuse Boxes category.

For users interested in a broader technical context, including the impact of advanced electronics and drive systems on component selection, an article describing various four-wheel-drive solutions may be helpful – find more information in the material xDrive, 4Matic, quattro or 4Motion – comparison of AWD drives from BMW, Mercedes, Audi and VW.