Description
Control Unit For Obstacle Detection For Citroën And Peugeot Vehicles
This parking assist control unit is a direct-fit electronic module for Citroën and Peugeot vehicles. It processes signals from the vehicle’s parking sensors to detect obstacles and generate driver warnings, helping to avoid low-speed collisions. The part is often searched by its OEM numbers (for example 9651662680 or 6590T3), so it is ideal for professional garages and skilled DIY mechanics who look up parts by code.
The module Interprets Inputs From Ultrasonic Parking Sensors, Filters False Echoes And Controls Audible And Visual Alerts. It Communicates With The Vehicle Wiring Harness And, On Some Models, With The Central Body Computer To Display Faults Or Status. Correct Replacement Restores Reliable Sensor Functionality, Eliminates False Alarms And Reestablishes Consistent Obstacle Detection.
Symptoms Indicating A Faulty Unit: Persistent Or Erratic Beeping From The Parking System, No Sensor Response When Reversing, Intermittent Detection Or Inaccurate Distance Readings, And Parking System Error Messages On The Instrument Cluster. Diagnose By Verifying Power, Ground And Sensor Signals Before Replacing The Control Unit.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C2, Citroën C3, Peugeot 307
- Product Codes: 9651662680, 6590T3, 6590T4
- Additional Numbers: 601.8826590T3, NFP
Installation Recommendations
- Disconnect The Negative Battery Terminal Before Starting Work To Prevent Short Circuits Or Damage To Vehicle Electronics.
- Access The Module According To Vehicle Trim Layout — It Is Commonly Located In The Rear Luggage Area Or Behind The Rear Bumper Trim. Remove Interior Panels Carefully To Avoid Breaking Clips.
- Inspect Connectors And Wiring For Corrosion, Bent Pins Or Water Ingress. Clean And Protect Contacts With Dielectric Grease If Necessary.
- Swap The Module, Secure Mounting Points And Reconnect All Harnesses Firmly. Restore Battery Power And Run A Full System Check.
- After Installation, Verify Parking Sensor Operation Via Reverse Gear Activation. On Some Vehicles A Diagnostic Tool Or Module Coding/Configuration May Be Required To Register The New Unit With The Vehicle Network.
Most Common Causes Of Failure
- Water Ingress And Corrosion Of Connectors Or Circuit Board Due To Damaged Seals Or Impact To The Rear Bumper.
- Physical Damage From Minor Collisions Or Impacts That Affect The Control Unit Or Sensor Wiring.
- Electrical Surges Or Short Circuits In The Parking Sensor Circuit Causing Component Failure.
- Intermittent Failures Caused By Loose Connectors, Broken Solder Joints Or Aging Electronic Components.
Note: The Parking Assist Control Unit Is Not A Regular Wear Item; Failures Are Usually Linked To Environmental Damage Or Electrical Issues. When Replacing The Module, Also Check Individual Sensors And Harnesses To Ensure A Comprehensive Repair.
