Fuse Box Mercedes W169 W245 Electrical Relay Control Unit A1695450540

Visual condition of the part 

The product shows signs of use visible in the photos. 

Fuse Box Mercedes W169 W245 Electrical Relay Control Unit is an original electrical system component from the Fuses and fuse boxes group, designed for use in Mercedes vehicles. This used fuse box provides a functional solution for workshops and users seeking a factory component to repair or restore the power supply and circuit protection system in the W169 model.

Specifications and technical data

• SKU: A1695450540
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1695450540
• Substitutable numbers: A1695450540, A 169 545 05 40, A1695451940
• Category: Fuses & Fuse Boxes

The role of the fuse box in the Mercedes W169

The fuse box in the Mercedes W169 plays a key role in power distribution and protecting electrical circuits against overloads and short circuits. It houses the circuits responsible for, among other things, lighting, the starting system, comfort controls, and power supply for electronic modules. Using an original component allows you to maintain the proper installation architecture and reduces the risk of compatibility issues.

Construction and technical purpose

The offered fuse box is a component designed by the vehicle manufacturer, which means it is perfectly matched to the factory wiring harness, connectors, and mounting points in the body. The design provides an organized layout of fuse and relay sockets, which facilitates diagnostics and subsequent maintenance. As a result, replacing a damaged module with an original counterpart is predictable and compliant with service documentation.

In practice, this means:

• maintaining the correct layout of circuits and labels,
• secure connection with factory wiring harnesses,
• stable mounting in the intended installation location,
• easier identification of circuits during measurements and repairs.

Benefits of using an original fuse box

Using an original fuse box in the Mercedes W169 helps to limit typical problems encountered with aftermarket replacements, such as differences in pin layout, different types of sockets, or non-compliance with electrical documentation. Proper selection of the component according to the OEM part number and interchangeable numbers allows for precise matching to the specific vehicle configuration, which is particularly important in the case of complex installations with multiple control modules.

For workshops and users, this means:

• reduced risk of installation errors,
• easier diagnosis of electrical faults,
• consistency with factory installation diagrams,
• the ability to maintain the original functionality of the equipment.

Condition and service application

The item is offered as a used part, which makes it an attractive cost-effective solution while maintaining the factory design. Such components are often chosen for post-accident repairs, damage caused by flooding or overheating of the installation, as well as problems with the power supply of selected circuits. Replacing the fuse box with an original module with the correct markings allows you to restore the proper operation of the electrical system without the need to interfere with the wiring harnesses.

Practical service application and part selection

When selecting a fuse box for a Mercedes W169, it is crucial to compare the OEM part number and available interchangeable numbers with the vehicle documentation or the removed part. This ensures that the layout of sockets, connectors, and circuit configuration will be compatible with the equipment of the specific vehicle. In case of doubt, it is worth using manufacturer catalogs or specialized service software to avoid installing an unsuitable module.

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other elements from the same group, such as additional boxes, distribution modules, or housings with sockets, check the available parts in the Mercedes Fuses and fuse boxes category.

Substantive support and vehicle preparation for operation

When working with the electrical system, it is worth paying attention to the general condition of the vehicle, especially during periods of increased system load, e.g., in winter, when heating, lighting, and additional receivers are working intensively. A good practice is to periodically check the condition of fuses, connectors, and elements exposed to moisture. To better plan service work and the replacement of used components, a guide on preparing the car for low temperatures may be helpful – you can find it in the article Winter essentials: which used car parts are worth checking and replacing before the frost?.