Mercedes W205 Rear Bumper Parking Sensor PDC Wiring Loom Harness A2055402500

Mercedes W205 Rear Bumper Parking Sensor PDC Wiring Loom Harness is an original electrical installation component designed to support parking sensors in the rear of the vehicle. It ensures a stable connection between the PDC sensors and the control module, which translates into the proper operation of the parking assistant. Thanks to its factory design, the wiring harness is perfectly matched to the geometry of the rear bumper in Mercedes C-Class W205 generation models.

Specifications and technical data

• SKU: A2055402500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055402500
• Substitutable numbers: A2055402500, A 205 540 25 00, A205540250007, A 205 540 25 00 07
• Location on the vehicle: Rear
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function in the PDC system

The rear bumper PDC wiring harness is responsible for transmitting signals from the parking sensors to the vehicle's electronics. A properly functioning installation:

• enables precise detection of obstacles behind the vehicle,
• supports the driver when maneuvering in tight parking spaces,
• reduces the risk of damage to the bumper and body components,
• ensures correct cooperation with the factory acoustic and visual warning system.

Due to its dedicated design for the rear of the vehicle, the harness is prepared to operate in an area exposed to moisture, dirt, and temperature fluctuations.

Construction and fitment for Mercedes W205

The component has been designed specifically for the electrical architecture of the Mercedes C-Class W205, which means:

• appropriate placement of connectors for parking sensors in the rear bumper,
• factory-standard plug terminations for the vehicle's installation,
• wiring routing consistent with original mounting points.

Such fitment facilitates installation without the need for modifications, maintains the aesthetics of cable routing, and ensures compliance with factory electrical safety standards.

Condition of the component and benefits of using a used part

The offered harness is a used part, which allows for an economical repair of the PDC system while maintaining the manufacturer's original specifications. In practice, this means:

• maintaining compatibility with the factory parking system,
• no need to adapt universal solutions,
• the ability to restore system functionality after mechanical damage to the rear bumper.

Replacing a damaged harness with an original part from dismantling is particularly beneficial when wires have been severed or connectors damaged as a result of a collision or interference with the bumper.

Installation in the rear of the vehicle

The location on the vehicle in the rear body zone facilitates identification of the component during service work. When replacing the harness, it is worth paying attention to:

• correct routing of wires along the original clips,
• precise connection of all PDC sensor plugs,
• checking the condition of the sockets in the bumper and the tightness of the connections.

Careful installation reduces the risk of subsequent sensor communication problems, parking system errors, and unwanted messages on the instrument cluster.

System expansion and selection of related parts

If you are planning a comprehensive repair or upgrade of the rear bumper area in your Mercedes and need other components from the same group, such as additional harnesses, connectors, or electrical installation elements, check the available parts in the Other Mercedes category.

For a comparison of solutions used in sports models of other brands and a better understanding of the differences in the design of drive and brake systems, you can read the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the manufacturers' approach to designing key vehicle systems.