Mercedes SLK R172 Rear Fuse Box SAM Relay Control Unit Module A1729060105

The Mercedes SLK R172 Fuse Box SAM Keyless Module is an original electrical system component designed for the rear of the body, responsible for advanced power management and keyless entry functions. This component from the Fuses and Fuse Boxes group ensures stable circuit operation, protecting the installation from overloads and supporting the correct functioning of comfort systems. Thanks to its factory design, the module is precisely matched to the electrical architecture of the SLK R172 model, facilitating service and diagnostics.

Specifications and technical data

• SKU: A1729060105
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1729060105
• Substitutable numbers: A1729060105, A 172 906 01 05
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Function of the SAM Keyless Module in the Mercedes SLK R172

The SAM (Signal Acquisition and Actuation Module) in the rear of the vehicle is responsible for collecting signals from sensors and controlling selected receivers, such as lighting elements, selected comfort systems, or components related to keyless entry. The integrated fuse box allows for logical grouping of circuits, which simplifies fault localization and reduces the risk of secondary damage to the installation.

The integration of Keyless functions with the SAM module allows for cohesive management of signals from the vehicle access and start system, leading to faster diagnostics and more predictable electrical system behavior in case of a single circuit failure.

Construction and Placement in the Vehicle

The presented module is designed for installation in the rear of the body, which is due to the factory division of the electrical architecture in the Mercedes SLK R172. This placement:

• shortens the length of wiring harnesses for rear receivers,
• facilitates service access to fuses and connectors,
• reduces voltage drops in critical circuits.

Thanks to its construction compliant with manufacturer requirements, the module maintains appropriate resistance to typical operating conditions in the rear of the vehicle, such as temperature changes or increased humidity in the luggage compartment.

Application and Benefits of Installation

Using an original SAM Keyless module in the Mercedes SLK R172 allows for the restoration of correct operation of circuits powered by the rear fuse box, especially in cases of:

• problems with power supply to selected receivers in the rear of the vehicle,
• faults related to comfort functions associated with the Keyless system,
• mechanical or thermal damage to the existing fuse box.

Replacing it with a component from the same construction group minimizes the risk of electrical and software incompatibilities, and also facilitates cooperation with factory diagnostic procedures. This solution is particularly beneficial for workshops specializing in the Mercedes brand, where repeatability and predictability of repair results are crucial.

Product Characteristics and Condition

The offered item comes from an operated vehicle, meaning it is a used part that retains the original manufacturer's specifications. Such components are often chosen for professional repairs when the priority is to maintain the factory electrical architecture while optimizing service costs. The module, as an integrated part of the fuse box, allows for quick replacement of the entire assembly without the need to interfere with the internal structure of the circuits.

Support in Selection and System Expansion

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

For users and workshops that simultaneously service comfort, climate control, and heating systems, a practical guide on selecting used OEM components and maintenance schedules may be helpful – you can find it in the article Climate Control and Heating – Part Selection and Maintenance for Year-Round Comfort.