Volvo V40 Mk3 Rear Parking Sensor Wiring Harness 850002405

Volvo V40 Mk3 Rear Parking Sensor Wiring Harness is a factory electrical component responsible for the proper connection of the rear parking sensors to the vehicle's control system. By maintaining the original geometry of the wires and connectors, the harness ensures stable operation of the parking system and precise signal transmission. It is a practical solution for users who want to restore full functionality of the parking assistant in their Volvo V40 Mk3.

Specifications and technical data

• SKU: 31314503AF
• Mark: Volvo
• Condition: Used
• OEM Part Number: 31314503AF
• Location on the vehicle: Rear
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented harness is an electrical installation component located in the rear part of the body, within the bumper area. It is responsible for connecting the parking sensors to the control module, which enables the proper operation of the parking assistance system during reversing maneuvers. A correctly selected harness minimizes the risk of system errors, signal interference, and communication problems between the sensors and the vehicle's electronics.

Construction and advantages of the original harness

The Volvo V40 Mk3 Rear Parking Sensor Wiring Harness belongs to the Wires, harnesses, and connectors category, meaning it was designed as an integral part of the factory installation. It includes properly routed wires and matched connectors that work with the original sensors and mounting brackets in the bumper. Using the original design facilitates installation, allows for maintaining factory wire routing, and limits the need for any modifications to the installation. Thanks to the maintenance of the correct length and placement of branches, the harness fits well into the workspace of the rear part of the vehicle, which helps to avoid wire tension, insulation abrasion, and accidental disconnection of connectors during operation.

Benefits of using a used OEM part

Using an original, used parking sensor harness is particularly beneficial for cars such as the Volvo V40 Mk3, where electronic systems are tightly integrated. Factory-fit connectors and wires translate into high compatibility with the existing installation and predictable system behavior in the long term. In many cases, this is a more technically consistent solution than universal replacements that require modifications. If you want to better understand why original used electrical installation components are often a more reasonable choice than new replacements in older premium cars, it is worth reading the article: The myth of the ideal new part – why used factory parts often work better in older cars.

Installation and service application

The harness is intended for installation in the rear zone of the vehicle, within the bumper and adjacent structural elements. Its use is particularly useful in situations such as:

• repair after a rear-end collision,
• damage to the factory installation (abrasions, corrosion, broken wires),
• diagnosis of parking system errors related to lack of communication with sensors,
• restoring the completeness of the installation after previous, unprofessional modifications. Replacing the harness allows for restoring the proper operation of the parking system without the need for interference with the vehicle's software, provided that the other elements of the system (sensors, control module, power supply installation) are functional.

Expanding work on the Volvo electrical installation

If you are planning a comprehensive repair or modernization of the electrical installation zone in your Volvo and need other elements from the same group, such as additional harnesses, signal wires, or service connectors, check the available parts in the Volvo wires, harnesses, and connectors category.

Summary

Volvo V40 Mk3 Rear Parking Sensor Wiring Harness is a practical service solution for users who want to restore or maintain the efficient operation of the rear parking system in their car. The original design, fitment for the specific model, and well-thought-out wire routing promote trouble-free installation and stable system operation in daily use. For workshops and individual users, this means a technically consistent, predictable, and economical way to repair the installation in the rear part of the vehicle.