Audi A4 B8 Parking Control Module - Used Original Parts

Diagnosis and Common Symptoms

From a workshop perspective, diagnosing the J446 Parking Aid Module on the B8 platform requires a logical approach. The most common driver complaint is a persistent, high-pitched tone upon selecting reverse, followed by a "Parking Aid Malfunction" warning on the Driver Information System (DIS) or MMI screen. The parking system activation button will typically flash, indicating a system fault.

A diagnostic scan is critical. Fault codes often point directly to the module, such as:

• 01327 - Control Module for Parking Aid (J446) - No Communication
• 00445 - Loss of Signal from Control Module
• 65535 - Internal Control Module Memory Error

Be aware that multiple sensor faults (e.g., 01545 - Sensor for Parking Aid; Rear Left (G203) - Open or Short to Ground) logged simultaneously can also indicate a failing module, not individual sensors. The root cause is frequently internal electronic failure or, in some cases, water ingress due to its location in the vehicle's rear quarter panel.

Introduction

This is a Genuine Audi Parking Control Module, carefully recovered from a donor vehicle. It serves as a direct, cost-effective replacement for a failed factory unit, restoring your vehicle's parking assistance system. Each module undergoes rigorous bench testing to verify CAN bus communication and full operational integrity before being dispatched.

Product Details

• Brand: Audi
• Model Compatibility: Audi A4 / S4 (B8 Platform, 2008-2016). Please verify the part number against your original unit for precise fitment.
• Part Name: Parking Aid Control Module (J446)
• Condition: Genuine Used (Tested Working)
• Notes: This module may contain Component Protection. It will require coding and adaptation via VCDS or ODIS diagnostic tools to integrate with your specific vehicle's CAN gateway and MMI system.