Used Bosch PDC (Park Distance Control) control unit designed for Peugeot 407 vehicles equipped with factory parking assistance. This compact electronic module manages ultrasonic sensors, interprets distance signals and provides audible/visual warnings to the driver. Supplied with original reference numbers 9656174280 / 9659350680 and Bosch internals (0263004095), the unit is an economical choice for mechanics and experienced DIYers who need a direct-fit replacement for a faulty parking assist ECU.

Compatibility And Application

Fits Peugeot 407 models equipped with Bosch Parking Assist systems (factory rear/complete PDC wiring). Commonly used on sedan, SW (estate) and coupe body styles where the original part numbers match: 9656174280, 9659350680. Verify that the vehicle is fitted with a Bosch PDC system before installation.

Technical Information

• Manufacturer: Bosch
• Model: Peugeot 407
• Product Codes: 9656174280, 9659350680
• Additional Numbers: 0263004095, 6590L7, 6590T5

Function And Typical Fault Symptoms

The module processes signals from the ultrasonic sensors and controls the parking aid indicators and buzzer. Common failure symptoms include intermittent or complete loss of PDC warnings, constant beep or fault tone, error messages on the instrument cluster, or disabled parking assist lights. In many cases the sensors themselves report errors to the control unit which then records fault codes.

Installation Recommendations

• Always disconnect the battery before starting removal or installation to avoid electrical damage.
• Access the unit by removing the necessary trim in the rear luggage area (units are typically mounted near the rear bumper or inside the boot behind trim panels).
• Carefully unplug the multi-pin connector(s) and release any mounting clips or screws. Compare connector shapes and pin counts before connecting the replacement.
• After mechanical installation, reconnect the battery and clear fault codes with a diagnostic tool. Verify sensor signals and perform any required initialization or calibration using a compatible diagnostic interface (e.g., PSA/DiagBox or equivalent) to ensure full functionality.
• Use dielectric grease on connectors if corrosion or moisture was present on the original unit to improve long-term reliability.

Why This Part Fails Most Often

• Water Ingress And Corrosion: Moisture penetration into connectors or the housing leads to short circuits and electronic failures.
• Impact Damage: Rear-end impacts or heavy shocks can physically damage sensors or the ECU mounting, causing failure.
• Electrical Surges And Faulty Wiring: Short circuits, poor ground connections or damaged sensor wiring can overload the unit.
• Sensor Failures: Defective ultrasonic sensors can create error conditions that render the control unit inoperative or put it into fail-safe mode.
• Age And Environmental Stress: Thermal cycling and vibration over years of service degrade solder joints and electronic components.

Practical Notes For Mechanics And DIYers

This used Bosch parking assist ECU is a cost-effective replacement for units with confirmed electronic faults. While mechanical replacement is straightforward for a trained mechanic, final commissioning often requires a diagnostic tool to clear stored fault codes and confirm sensor operation. If multiple sensors show errors, inspect wiring and connector continuity before replacing the control unit to avoid unnecessary repeat replacements.

This Bosch Parking Distance Control (PDC) ECU is a direct-fit replacement option for Peugeot 407 vehicles equipped with factory Park Assist. Ideal for professional workshops and experienced DIY mechanics, this control module processes ultrasonic sensor signals and drives the interior/exterior indicators and buzzer to assist with low-speed parking maneuvers. The unit is identified by multiple common part numbers and is suited for vehicles that display parking sensor faults, constant beeping, or no parking guidance at the rear/front.

Technical Information

• Manufacturer: Bosch
• Model: Peugeot 407
• Product Codes: 0263004095
• Additional Numbers: 6590L7, 6590T5, 9656174280, 9659350680, 263004095

Overview

The Parking Assist Control Unit (PDC ECU) interprets signals from the ultrasonic sensors and manages audible and visual feedback to the driver when reversing or maneuvering at low speed. It continuously monitors sensor inputs, validates distances, and triggers the buzzer or dashboard indicators when obstacles are detected. Proper function requires intact sensors, correct wiring, and a healthy vehicle power supply.

Compatibility And Fitment

This module is intended for use in Peugeot 407 vehicles equipped with factory parking assistance systems. Compatibility should be confirmed by matching the unit’s part numbers listed above with the vehicle’s original part number. Typical fitment locations are behind interior trim in the boot/bootside area or near the rear bumper harness, depending on model variant.

Replacement Procedure

Recommended basic steps for experienced technicians or competent DIY mechanics:

1. Disconnect The Battery Before Work To Prevent Short Circuits And Protect Electronics.
2. Access The Module By Removing Relevant Interior Trim Panels In The Boot Or Rear Side Panels—Take Care Not To Damage Clips.
3. Unplug The Electrical Connectors And Release Any Mounting Brackets Or Screws Securing The Unit.
4. Fit The New Unit In Place, Reconnect All Connectors Securely And Reassemble Trim Panels.
5. Restore Battery Power And Verify Basic Functionality. Full Commissioning May Require Coding Or Initialization (See Installation And Coding Section).

Installation And Coding – Important

– The Unit Is Used And May Be Paired With The Original Vehicle (VIN/PIN/Keys).
– Options For Commissioning:
1) Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
2) Virginization And Subsequent Initialization/Telecoding Via DiagBox (Or Online) + Key Adaptation.
– Recommended To Be Performed By A Specialist With PSA Service Equipment (DiagBox/Lexia/PP2000).
– Always Disconnect The Battery Before Removal/Installation And Follow Manufacturer Procedures To Avoid Damaging The Unit.

Why This Part Fails Most Often

• Water Ingress Or Moisture Causing Corrosion On Connector Pins Or Internal Electronics.
• Impact Damage From Rear Collisions Affecting Sensors Or The Control Unit.
• Damaged Wiring Harnesses Or Loose/Corroded Connectors Leading To Intermittent Faults.
• Sensor Failures That Cause The ECU To Report Errors Or Enter A Fault State.
• Aging Components And Thermal Stress Over Time, Especially In Vehicles Exposed To Road Salt And Humidity.

Tips For Diagnosis

• Check Fuses, Ground Connections And Connector Condition Before Replacing The ECU.
• Inspect Sensor Plugs And Wiring For Corrosion, Damage Or Water Traces.
• Perform A Visual Inspection For Signs Of Impact Or Deformation On The Bumper And Sensor Housings.
• Consider Cloning Or Proper Initialization When Installing A Replacement Unit To Ensure Full System Functionality.

Overview

This PDC (Parking Distance Control) control unit is designed for first‑generation Peugeot 3008 and 5008 vehicles and manages both front and rear ultrasonic sensors. Supplied under OE numbers 9800266380 / 1607732680 / 6590KA, the module processes sensor signals and triggers audio/visual warnings to assist safe low‑speed manoeuvring. It is a direct replacement part intended for technicians and experienced DIYers who maintain Stellantis platform vehicles.

Compatibility & Application

Fits:

• Peugeot 3008 (First Generation)
• Peugeot 5008 (First Generation)

Function: Controls Front And Rear Parking Sensors, Evaluates Distance, Generates Warning Tones/Indicators.

How To Replace

1. Ensure Vehicle Is Secure And Parked On A Level Surface.
2. Disconnect The Negative Terminal Of The Battery Before Any Work.
3. Access The Unit According To The Vehicle Manual (Location Varies By Trim; Often Mounted Near The Rear Luggage Area Or Behind Interior Trim Panels).
4. Remove Trim Panels Carefully To Expose The Module; Avoid Damaging Clips And Harnesses.
5. Unplug Electrical Connectors By Releasing Locks; Inspect Connectors And Wiring For Corrosion Or Damage.
6. Unbolt The Module, Transfer Any Brackets If Required, And Install The Replacement Unit Securely.
7. Reconnect Connectors, Refit Trim, Reconnect The Battery.
8. Perform System Checks And Any Required Calibration/Initialization With A Diagnostic Tool.

Installation Recommendations

• Always Disconnect The Battery Before Removing Or Installing The Unit To Avoid Short Circuits And Potential Damage.
• Inspect Sensor Wiring And Connectors While The Unit Is Accessible; Replace Damaged Clips Or Seals To Prevent Future Water Ingress.
• Apply A Thin Film Of Dielectric Grease To Connector Pins If Exposed To Moisture.
• After Mechanical Fitment, Run A Full Diagnostic And Sensor Test. If The System Shows Fault Codes Or Incorrect Sensor Readings, Recheck Harnesses And Grounds.
• Calibration/Initialization: Some Vehicles Require A Diagnostic Tool To Clear Faults And Validate Sensor Operation. Use A PSA‑Compatible Tool (DiagBox/Lexia) Or Equivalent For Full Functional Tests And Sensor Learning.
• If You Are Uncertain About Coding Or Advanced Calibration Steps, Have A Technician With Proper Diagnostic Equipment Complete The Final Setup.

Why This Part Fails

Common failure causes include:

• Water Ingress And Corrosion Of Connectors Or Internal Electronics Due To Damaged Seals Or Impact To The Rear/Front Bumper.
• Physical Impact From Parking Accidents Or Road Debris Damaging The Module Or Sensors.
• Damaged Wiring Or Short Circuits From Previous Repairs Or Rodent Damage.
• Electrical Surges Or Faulty Vehicle Grounds Causing Component Failure.
• Sensor Failures That Cause Excessive Load/Errors On The Module; Replacing The Module Without Addressing Faulty Sensors Or Wiring May Result In Recurring Issues.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Peugeot 3008 I; Peugeot 5008 I
• Product Codes: 9800266380, 1607732680, 6590KA
• Other Numbers: 1607732680 | 6590KA | 9800266380

Notes For Mechanics And DIYers

This unit is commonly referenced by its OE part numbers when sourcing or searching online—include these codes in parts searches to improve results. Replace the module together with a full check of sensor operation and wiring to ensure a long‑term repair. If the vehicle displays persistent faults after swap, confirm sensor integrity and perform a full diagnostic session to identify any residual issues.

High-Quality Bosch Parking Assist Control Unit Designed For Professional Workshops And Enthusiast Mechanics. This ECU Manages Ultrasonic Parking Sensors And Processes Distance Information To Deliver Audible And Visual Parking Alerts. It Is A Direct Replacement Option For Several Citroën And Peugeot Applications And Is Often Searched By Its Part Numbers, Making It Easy To Find When Replacing A Faulty Unit.

Technical Information

• Manufacturer: Bosch
• Model: Parking Assist Control Unit
• Product Codes: 0263004204, 9663821680
• Additional Numbers: 1606383380, 1606383480, 1606516180, 1606516380, 263004204, 6590EV, 6590EW

Compatibility

Fits Select Citroën And Peugeot Models Including Citroën C3, Citroën C3 Picasso, Citroën C4 Picasso, Citroën C5, Peugeot 207 And Peugeot 308. Verify The Correct Part Number For Your Specific Version And Year Before Installation.

Function And Typical Symptoms Of Failure

The Parking Assist Control Unit Receives Signals From Ultrasonic Sensors, Interprets Distance Data And Triggers Dashboard Indicators, Audible Beeps And Multimedia Messages To Assist With Parking Maneuvers. Common Symptoms Indicating A Faulty Unit Include:

• Complete Loss Of Parking Sensors Or Intermittent Operation
• Continuous Or Irregular Beeping From The Park Assist System
• Dashboard Warning Messages Related To Parking Assist
• Individual Sensors Reporting Fault Codes Or Showing Incorrect Distances

Replacement Procedure

1. Disconnect The Negative Terminal Of The Battery Before Any Work To Prevent Short Circuits And Protect Electronic Modules.
2. Locate The Unit. Parking Assist ECUs Are Commonly Mounted Near The Rear Bumper Area Or Inside The Luggage Compartment Behind Trim Panels; Exact Location Varies By Model.
3. Remove Interior Trim Panels Carefully To Gain Access. Keep Fasteners And Clips For Reinstallation.
4. Disconnect The Wiring Harness And Any Sensor Or Antenna Connectors. Note Connector Positions To Avoid Cross-Connections.
5. Remove The Old Unit And Fit The Replacement, Securing It With The Original Brackets Or Fasteners.
6. Reconnect All Connectors, Refit Trim, And Reconnect The Battery.
7. Perform A Functional Test. Clear Any Stored Fault Codes And Run Diagnostic Checks. Sensor Calibration Or Software Adaptation May Be Required Using Appropriate Diagnostic Equipment.

Installation Recommendations

• Always Isolate The Battery Before Handling Electronic Modules.
• Protect Connectors From Contamination And Use Dielectric Grease Where Recommended To Prevent Corrosion.
• Inspect Sensor Wiring And Ground Connections When Replacing The ECU; Damaged Cables Are A Common Cause Of Recurrent Faults.
• Avoid Applying Excessive Force To Plastic Clips And Connectors; Replace Broken Clips To Ensure Proper Sealing Against Moisture.
• After Installation, Run A Full Diagnostic Sequence To Clear Errors And Verify Sensor Operation Across All Parking Zones.
• For Final Verification, Perform A Live Sensor Test While Operating The Park Assist To Confirm Correct Response.

Most Common Failure Reasons

• Water Ingress And Corrosion In Harsh Environments, Especially If Seals Or Trim Panels Are Damaged.
• Connector Corrosion Or Damaged Wiring Causing Intermittent Signals.
• Impact Damage From Rear Collisions That Affect The Unit Or Sensors.
• Electrical Surges Or Short Circuits Due To Faulty Sensors Or Poor Ground Connections.
• Software Or Communication Errors That Require Diagnostic Intervention And Clearing Of Stored Faults.

Search Tip: This Unit Is Commonly Looked Up By Part Numbers Such As 0263004204, 9663821680, 1606383380, 1606383480, 1606516180, 1606516380, 263004204, 6590EV And 6590EW. Including These Codes In Your Search Increases The Chance Of Finding The Correct Replacement Quickly.

Description

This Valeo Parking Assistant Control Unit (PDC ECU) is designed for Peugeot 307 and Citroën C4 vehicles. The unit manages ultrasonic parking sensors, interprets sensor signals and provides audible/visual warnings to assist safe parking and low-speed manoeuvring. Commonly searched by part numbers, this control unit is an essential replacement for workshops and DIY enthusiasts troubleshooting faulty park-assist systems.

Technical Information

• Manufacturer: Valeo
• Model: Peugeot 307; Citroën C4
• Product Codes: 9661594280; 6590V3; 6590V2; 6590N1; 6590N0
• Other Numbers: 601873

Function And Benefits

The control unit receives input from the ultrasonic sensors, filters and processes the signals, and then outputs distance warnings to the vehicle’s speaker or dashboard display. Replacing a faulty unit restores reliable obstacle detection and prevents false alarms or total loss of parking assistance. This unit is ideal for professional garages and competent DIYers who need a direct replacement by part number.

Replacement And Installation Guidance

General replacement steps (overview for trained personnel):

• Disconnect The Battery Before Work To Protect Vehicle Electronics.
• Access The Unit By Removing The Relevant Interior Trim Or Luggage Compartment Linings To Reach The Control Unit.
• Label And Disconnect Electrical Connectors And Any Sensor Harnesses Carefully.
• Remove Mounting Fasteners, Replace The Unit With The New One, Reconnect Harnesses And Secure Mounting.
• Reconnect The Battery And Perform Sensor Self-Test. Some Vehicles Require Initialization Or Coding To Restore Full Functionality.

Note: Inspect Sensor Plugs, Wiring And Fuses During Replacement. Corroded connectors or damaged sensor cables are frequent secondary causes of PDC faults and should be repaired to avoid repeating the failure.

Coding And Initialization

Depending On Vehicle Configuration, The New Unit May Need Initialization Or Coding To Communicate Correctly With The Vehicle Network And Parking Sensors. Professional PSA Diagnostic Tools (DiagBox/Lexia) Are Typically Used For This Purpose.

Recommended Installation

Installation Is Best Performed By A Qualified Technician Or An Experienced DIYer With Proper Tools. Always Disconnect The Battery Before Starting Work, Avoid Short Circuits, And Follow Manufacturer Service Procedures Where Available. Check All Connectors For Secure Fit And Corrosion, And Verify Sensor Operation After Installation.

Common Failure Reasons

• Water Ingress And Moisture Causing Short Circuits Or Corrosion In The Unit Or Connectors.
• Physical Impact To Bumper Or Sensors Leading To Faulty Signals.
• Damaged Or Corroded Wiring And Connectors Between Sensors And Control Unit.
• Electrical Surges Or Battery Related Issues Causing Electronic Failure.
• Sensor Failure Causing The ECU To Report Errors Or Enter A Fault Mode.

Why Buy This Unit

Searching By Part Number Makes Finding A Direct Replacement Fast And Reliable. This Valeo PDC ECU Matches Common OEM Numbers For Peugeot 307 And Citroën C4, Helping You Get The Park-Assist System Back To Proper Operation Quickly — Essential For Workshop Efficiency And DIY Repairs.

Reliable parking assistance starts with the correct control unit. This Bosch Parking Assist Control Unit (ECU) is designed for Citroën and Peugeot vehicles and manages inputs from both front and rear ultrasonic sensors to provide audible and/or visual guidance during low-speed maneuvers. Ideal For Professional Garages And Competent DIY Enthusiasts, This Unit Often Gets Searched By Part Numbers Such As 9663821780, 0263004203 Or 6590EC — Include These Codes When Searching For Compatibility Or Replacement.

Function And Benefits

The unit Processes Sensor Signals, Filters False Echoes And Triggers The Vehicle’s Parking Alerts. It Improves Parking Safety By Calculating Distance To Obstacles And Providing Timely Warnings. Compatible With Both Front And Rear Sensor Arrays, The ECU Ensures Coordinated Operation Of All Parking Sensors And Interfaces With The Vehicle’s Infotainment Or Dash Indicators When Applicable.

Typical Applications

Common Fitments Include Citroën C4 Picasso, Citroën C5 (X7) And Peugeot 407. Because Parking Assist Systems Are Often Shared Across Several Body Variants, Confirming The Exact Product Codes Listed Below Helps Locate The Right Unit For Your Vehicle.

Technical Information

• Manufacturer: Bosch
• Model: Parking Assist Control Unit / Parking ECU
• Product Codes: 9663821780, 0263004203, 6590EC
• Other Numbers: 6590EE, 6590CZ, 6590EA, 6590GN, 6590GP

How Replacement Is Performed

Locate The Parking Assist ECU — It Is Typically Mounted In The Luggage Compartment Area Or Behind The Rear Bumper Trim On Many Citroën And Peugeot Models. Replacement Steps Generally Include: disconnecting the vehicle battery, removing interior panels or bumper trim to access the unit, unplugging sensor and power connectors, swapping the unit and reconnecting all plugs, then refitting trims. After Physical Installation, The System May Require Reinitialization Or Basic Checks To Ensure All Sensors Are Detected And Working.

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits And Protect Vehicle Electronics.
• Handle The ECU And Connectors Carefully To Avoid Bent Pins Or Damaged Clips.
• Ensure Connectors Are Clean And Free Of Corrosion; Use Contact Cleaner If Necessary.
• Secure The Unit In Its Original Mounting Position To Avoid Rattles And Water Ingress.
• After Installation, Perform A System Check By Activating The Parking Sensors And Verifying Audible/Visual Feedback.

Why This Part Fails Most Often

Common Causes Of Failure Include Moisture Ingress And Corrosion Of Connectors, Impact Damage From Rear-End Collisions, Wiring Harness Damage Or Short Circuits, And Electrical Surges. Sensor Failures Or Contaminated Sensor Faces Can Also Cause The ECU To Report Faults. Environmental Exposure And Repeated Mechanical Stress Are Typical Contributors To Long-Term Degradation.

Notes For Mechanics And DIYers

Searches By The OEM Numbers 9663821780, 0263004203 And 6590EC Are Frequent — Including These Codes In Your Listing Improves Findability. When Replacing The Unit, Inspect Sensor Wiring And Mounts For Damage Or Corrosion To Avoid Immediate Recurrence Of Faults. If The Vehicle Displays Persistent Errors After Swap, Check Individual Sensor Resistances And Connector Integrity Before Considering ECU Replacement.

This replacement parking assist speaker is designed to restore clear audible warnings from the reverse parking system on compatible Citroën and Peugeot vehicles. Ideal for professional workshops and DIY mechanics, the unit is often searched by its product codes, ensuring quick identification and fitment. The compact buzzer provides the acoustic signal for parking sensors and is a direct-fit electrical component for systems using the listed part numbers.

Benefits:

• Direct Replacement For Original Equipment Part Numbers — Fast Identification By Code.
• Clear, Reliable Audible Signal To Restore Parking Sensor Alerts.
• Compact Design For Easy Installation Behind Trim Or Bumper Area.
• Cost-Effective Repair Option For Faulty Or Silent Parking Assist Systems.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model(s): Citroën C2, Citroën C3, Citroën Xsara Picasso, Peugeot 307, Peugeot 607
• Product Codes: 9653138980
• Other Numbers: 6590A0

Installation Recommendations

• Disconnect The Vehicle Battery Before Any Work On The Parking System To Avoid Short Circuits.
• Access The Speaker Through The Rear Trim Panel Or Inner Bumper Area Depending On Model. Remove Fasteners And Clips Carefully To Prevent Damage.
• Unplug The Electrical Connector From The Faulty Speaker. Compare Connectors And Mounting Points To Confirm Correct Orientation.
• Fit The Replacement Unit In The Same Position, Secure With The Original Fasteners, And Reconnect The Electrical Connector.
• Reconnect The Battery And Verify Operation By Engaging Reverse Gear Or Using The Vehicle’s Parking Assist Test Function If Available.
• Inspect Wiring And Connector Pins For Corrosion Or Water Ingress; Repair Any Damaged Harness Sections To Prevent Recurrence.

Reason Why The Part Fails Most Often

Parking assist speakers are exposed indirectly to moisture and contaminants, especially when mounted behind bumpers or inside rear trim. The most common causes of failure are water Ingress And Corrosion Of Contacts, Mechanical Damage From Impacts Or Road Debris, And Electrical Issues Such As Short Circuits Or Broken Wires. Age And Repeated Exposure To Humidity Can Also Degrade The Internal Components, Leading To Intermittent Or Complete Loss Of Sound.

Practical Notes For Mechanics And DIYers

When replacing the speaker, always check The Sensor Electronics And Wiring Continuity Before Assuming The Speaker Is At Fault — A Silent Buzzer Can Be Caused By A Faulty Sensor Module Or Broken Supply Wire. Use The Product Codes (9653138980 / 6590A0) To Confirm Compatibility Quickly. Keep Trim Clips And Fasteners In Good Condition To Ensure Proper Refitting And Prevent Vibrations That Can Affect Acoustic Performance.

This unit is an exact-fit replacement option for vehicles listed under the compatible models above and is commonly sought by its product numbers. Replacing a faulty parking assist speaker returns reliable audible alerts and improves safety during low-speed maneuvers.

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.

Part description

This ECU unit PDC (parking assistant) from Bosch is used to evaluate signals from parking sensors and control the parking assistant function. It is intended for Peugeot 308 T9 and according to the description it supports front and rear sensors. A suitable choice for parking system malfunctions when the control unit needs to be replaced with the correct part by number.

Technical information

• Manufacturer: Bosch
• Model: Peugeot 308 T9
• Other numbers: 9811742080, 1613711480

Product codes

• Product codes: 0263004802

Installation recommendations

• Please compare the part numbers (0263004802, 9811742080, 1613711480) with the original unit before assembly.
• It is recommended to perform the replacement with the battery disconnected and to observe the correct seating of the connectors (clean, without oxidation, firmly clicked).
• After installation, verify the function of the front and rear sensors and the reaction of the system when engaging reverse gear / activating the parking assist.

Reasons why the part is damaged

• Moisture and leakage into the unit space (corrosion of connectors, short circuit).
• Damage to wiring or connectors (broken wires, poor contact).
• Electrical overvoltage in the on-board network (e.g. with improper starting via cables).
• Faulty or defective sensor, which can burden the system for a long time and cause malfunctions.
• Mechanical damage due to vibration, impact or improper handling during disassembly/assembly.

This Bosch Parking Assistant ECU Is Designed To Manage Ultrasonic Front And Rear Sensors, Providing Distance Measurement And Audible/Visual Warnings During Low-Speed Maneuvers. It Is A Frequently Sought Replacement By Garages And DIY Enthusiasts Working On Stellantis Vehicles, Especially When The Original Unit Shows Fault Codes Or Intermittent Sensor Behavior. Common Search Terms Include Bosch Parking ECU, Parking Assist Control Unit, And The OEM References Listed Below.

Technical Information

• Manufacturer: Bosch
• Model: Parking Assistant Control Unit
• Product Codes: 9649604380, 0263004089
• Additional Numbers: 6590A3, 6590A4, 6590A1, 6590A2, 263004089
• Compatible Vehicles: Citroën C5 (2006) And Other Citroën/Peugeot Models Sharing The Above References
• Function: Controls Ultrasonic Front And Rear Parking Sensors, Processes Sensor Signals, Communicates With Vehicle Networks, And Triggers Audible/Visual Alerts

Installation Recommendations

• Disconnect The Negative Battery Terminal Before Any Work To Prevent Short Circuits And Fault Codes.
• Locate The Unit According To Vehicle Layout; Remove Trim Panels Carefully To Access The ECU And Sensor Connectors.
• Inspect Wiring Harnesses And Connectors For Corrosion Or Mechanical Damage Before Installing The Replacement Unit.
• Fit The Replacement ECU Using Original Connectors; Ensure Secure Locking Tabs And Proper Grounding.
• After Mechanical Installation, Clear Stored Fault Codes And Perform A Diagnostic Check With A Suitable Scanner (For Example DiagBox Or Bosch-Compatible Tools). Some Vehicles Require Module Coding Or Adaptation Procedures To Register The New Unit.
• Verify Sensor Operation By Performing A Functional Test: Activate Parking Aid And Confirm Audible/Visual Feedback For All Sensor Positions.

Reason Why The Part Most Often Fails

Parking Assistant ECUs From The 2000s Primarily Fail Due To Moisture Ingress And Connector Corrosion, Especially In Vehicles Exposed To Road Salt And Wet Conditions. Mechanical Damage From Impacts To The Bumper Or Sensors Can Also Cause Short Circuits Or Erroneous Signals That Damage The Control Unit. Electrical Surges, Faulty Sensors Causing Constant Load, And Chafed Wiring Are Other Common Causes.

Replacement Tips: When Replacing The ECU, Always Check The Condition Of Individual Ultrasonic Sensors And The Wiring Loom. A New Control Unit May Show Immediate Fault Codes If A Faulty Sensor Remains Connected. For Reliable Results, Repair Or Replace Damaged Sensors And Corroded Connectors Before Finalizing The Installation.

This Bosch Parking Assistant ECU With The Listed References Is A Practical Choice For Workshops And Experienced DIY Mechanics Requiring A Direct Fit Replacement For Citroën And Peugeot Vehicles That Use These Part Numbers.