Audi A4 B9 Rear Bumper PDC Wiring Parking Sensor Loom Harness 8W9971104T

Audi A4 B9 Rear Bumper PDC Wiring Parking Sensor Loom Harness is a component from the Wires, harnesses and connectors category, designed to support parking sensors in the rear of the vehicle. A properly selected harness ensures a stable connection between the control module and the sensors, which translates into predictable operation of the parking system. This is a solution for users who expect an efficient, technically correct installation without interfering with the factory electrical architecture.

Specifications and technical data

• SKU: 8W9971104T
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W9971104T
• Substitutable numbers: 8W9971104T, 8W9 971 104 T
• Location on the vehicle: Rear
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented harness is a component of the PDC system installation in the Audi A4 B9 generation model, located in the rear part of the body. It is responsible for transmitting signals between the parking sensors and other system components, which enables correct detection of obstacles behind the vehicle. Thanks to the dedicated fit for the specific model, the proper routing geometry of the wires and compatibility with factory connectors are maintained.

Construction and technical features

The harness belongs to the Wires, harnesses and connectors group, which means the use of integrated signal wires and appropriately selected system connectors. The design is intended for operation in conditions typical for the rear part of the body, where variable temperatures, moisture, and exposure to vibrations occur. The connectors used are prepared to work with factory PDC system sockets, which reduces the risk of installation errors and communication problems in the system.

Benefits of using an original PDC harness

Using a dedicated PDC installation harness in an Audi A4 B9 allows for maintaining consistency with the vehicle's factory electrical installation. The main advantages of such a solution include:

• secure fit to factory mounting points in the rear of the body,
• compliance with the standard of connectors used in the Audi PDC system,
• reduction of the need for electrical installation modifications,
• stable operating parameters of the parking assistance system.

Thanks to this, the installation proceeds in an orderly manner, and the risk of interference in the operation of parking sensors is reduced.

Condition of the item and service application

The offered harness is a used item, which makes it an attractive proposition for post-accident repairs, replacing damaged installations, or restoring the functionality of the PDC system after bodywork and paint interventions. Choosing such a component allows for optimizing service costs while maintaining compliance with the factory electrical architecture of the Audi A4 B9.

Integration with other Audi installation elements

The PDC harness works with other elements of the parking assistance system, such as sensors, the control module, and the vehicle's main installation. When planning a repair, it is worth paying attention to the condition of other wires and connectors in the rear of the body to avoid the return of a fault resulting from local damage to harnesses or contact corrosion.

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

For a broader view on selecting electrical installation components and other aftermarket parts, it is worth reading the guide on original used elements – you will find practical tips in the article The best used car parts – a guide to the most frequently chosen original parts.