Overview

Original equipment (OE) car radio with integrated CD player designed for Citroën C4 II (C4 B7) vehicles. This unit is an ideal replacement for workshops and DIY enthusiasts looking for a direct-fit head unit that restores factory audio functionality. Common search keywords and part numbers: 9676838180, 6574SQ, 1613842580.

Function And Benefits

The unit provides standard radio reception and a built-in CD player compatible with factory wiring and dashboard trim of Citroën C4 II. As an OE-style radio, it preserves original dashboard appearance, steering-wheel control compatibility (where fitted), and speaker connections without the need for extensive rewiring. Replacing a faulty radio with this unit returns audio and media playback to factory specifications.

Replacement Procedure

• Disconnect The Battery Before Starting To Avoid Short Circuits And Protect Vehicle Electronics.
• Remove Dashboard Trim Panels Surrounding The Radio Using Appropriate Trim Tools To Prevent Damage.
• Unscrew The Radio Fasteners And Carefully Slide The Unit Out Of The Dash.
• Unplug All Connectors: Power, Speakers, Antenna, And Any Data Or CAN Connectors.
• Connect The Replacement Unit, Refit Fasteners And Trim, Then Reconnect The Battery.
• After Reinstallation, Enter Any Required Radio Security Code If Prompted And Verify Operation Of Radio, CD Player, Antenna Reception, And Steering Controls.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C4 II (C4 B7)
• Product Codes: 9676838180, 6574SQ
• Other Numbers: 1613842580

Installation Recommendations

Always disconnect the battery before removal and follow the vehicle manufacturer’s instructions to avoid damage to the unit or vehicle electronics. Use plastic trim tools to protect interior panels. Check connectors for corrosion or bent pins and ensure firm mating of harness plugs. If the radio requests a security code after battery disconnection, have the vehicle’s radio code available. Test all functions (radio, CD playback, antenna reception, steering-wheel controls) before reassembling trim. For complex electrical systems or if additional coding is required, use qualified workshop equipment.

Why This Part Fails Most Often

Common causes of failure include mechanical wear of the CD mechanism, laser pickup degradation, internal capacitor aging due to heat, connector corrosion, or water ingress from leaks. Intermittent power issues can result from poor connector contacts or vehicle battery/charging system faults. Regular exposure to high cabin temperatures accelerates electronic component wear, making older units more prone to CD read errors, loss of radio reception, or complete unit failure.

Suitability And Notes

This unit is intended for Citroën C4 II (C4 B7) applications matching the listed product codes. Buyers often search by part number (9676838180, 6574SQ, 1613842580) to confirm fitment. Installation is straightforward for experienced mechanics and competent DIYers familiar with dashboard disassembly. Keep a clean work area and protect interior surfaces during the swap.

This multifunction control panel is a direct-fit replacement for Citroën C4 II vehicles and provides reliable control of the HVAC system and in-dash radio functions. Ideal for professional mechanics and competent DIY enthusiasts, the unit is supplied with known part references 9666027477 / 6155HL / 98040782ZD to simplify searches and ensure fast identification in parts catalogs and search engines. Replacing a faulty control panel restores user interface functions such as temperature selection, fan speed, mode selection and audio control, improving cabin comfort and driver convenience.

Technical Information

• Manufacturer: Citroën / Stellantis
• Model: Citroën C4 II (B7)
• Product Codes: 9666027477, 6155HL
• Other Numbers: 98040782ZD

Fitment And Function

Designed for Citroën C4 II (B7) dashboards, this multifunction panel controls heating, ventilation, air conditioning and selected radio functions. The panel operates the HVAC actuators, blower motor speeds and user inputs to the vehicle climate system. It is commonly cross-referenced by the listed product codes, making it easy to locate as a replacement part.

How The Part Is Replaced

• Disconnect Battery: Always disconnect the negative battery terminal before starting to avoid electrical damage.
• Remove Trim: Use plastic trim tools to remove the center fascia without scratching surrounding surfaces.
• Unscrew Fasteners: Remove the retaining screws securing the control panel to the dash.
• Unplug Connectors: Carefully release and unplug the wiring harness connectors and any ribbon cables.
• Swap Unit: Install the replacement panel, reconnect all connectors and secure with screws.
• Reassemble And Test: Refit the trim, reconnect the battery and verify HVAC and radio functions. Check for proper blower operation, mode selection and display/backlight function.

Installation Recommendations

• Use Proper Tools: Trim removal tools, Torx bits and a small screwdriver are typically required.
• Handle Connectors Carefully: Avoid pulling on wiring; release locking tabs before disconnecting to prevent broken clips.
• Protect The Unit: Avoid static discharge and do not force connectors—inspect for bent pins or corrosion.
• Check Related Items: Inspect HVAC actuators, blower motor and fuses if symptoms persist after replacement.
• Radio Security Code: If applicable, be prepared to enter the radio/security code after installation if the radio requests it.

Why The Part Most Commonly Fails

Multifunction control panels fail for several typical reasons: regular mechanical wear of rotary controls and switches, worn potentiometers, degraded contacts from dust and moisture, failed backlight LEDs, and cracked or dry solder joints caused by thermal cycling. Faulty connectors or damaged ribbon cables behind the panel also cause intermittent or total loss of function. Failures are more common on high‑mileage or older vehicles and in cars exposed to humid conditions.

Notes For Professionals

Part numbers 9666027477, 6155HL and 98040782ZD are useful search terms for quick identification. The unit is supplied used and listed as tested and functional. For a reliable workshop replacement, follow standard safety procedures and verify all HVAC functions during the initial post-fit check.

Upgrade or repair your vehicle’s climate control with this genuine-style manual HVAC controller designed for Citroën C1 and Peugeot 107 models produced up to 2014. Ideal for professional mechanics and DIY enthusiasts, this unit replaces the factory heater and manual air conditioning controller and is often searched by product codes 55900-0H040 and 55900-040. The control comes with mechanical link rods (control cables) that operate flaps and temperature/airflow selectors — a direct-fit replacement for worn or broken dashboard controllers.

Function And Benefits

The unit manages temperature selection, airflow distribution and fan speed for vehicles equipped with manual climate control. Mechanical control rods transmit selector movements to internal flaps and blend doors, providing reliable, tactile operation without requiring complex software configuration. Replacing a faulty control restores full manual control of cabin temperature and ventilation, improving comfort and driving safety.

How To Replace

1. Remove the necessary dashboard trim panels to access the HVAC control panel (refer to vehicle repair manual for exact trim removal points).
2. Disconnect the electrical connector and carefully release the control rods from their levers — note rod routing and clip positions for reassembly.
3. Unfasten the retaining screws and remove the old control unit.
4. Install the replacement unit, secure with screws, reconnect the control rods and electrical connector, and reassemble trim panels.
5. Test all functions (fan speeds, temperature slider, airflow direction) before finishing. Adjust rod end positions if necessary to ensure accurate flap movement.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C1, Peugeot 107 (up to 2014)
• Product Codes: 55900-0H040, 55900-040
• Additional Numbers: 6452P6, 6451SG, 6451SJ, 6451SH

Installation Recommendations

• Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Electrical Components.
• Keep Track Of Control Rod Routing And Clips; Incorrect Reconnection Can Lead To Misadjusted Flap Positions.
• Handle Plastic Tabs And Rod Ends Carefully — They Are Common Break Points During Removal.
• After Installation, Verify Full Range Of Motion For All Controls And Check That Airflow And Temperature Respond Correctly.

Common Failure Causes

Manual climate controllers on these models commonly fail due to broken plastic levers, worn or detached control rods, and internal potentiometer or switch wear from long-term use. Exposure to heat and repeated mechanical stress can cause clips and sliders to crack or lose precision, resulting in stuck flaps, non-responsive temperature control or intermittent fan speed operation.

Choose this replacement if your climate controls are stiff, unresponsive, making noise, or if mechanical linkages are broken. Properly fitted, the unit restores reliable manual control of your vehicle’s heating and ventilation system.

This OEM-style USB socket (part numbers 96645227ZD / 6574JV) provides a direct replacement for factory-installed USB outlets in a range of Citroën, Peugeot and DS models. Designed for professional workshops and competent DIYers, the socket restores charging and media connectivity functions in the center console, glove compartment or dashboard. Clear fitment by product code makes it easy to find the right part for repairs — enter 96645227ZD or 6574JV when searching.

The socket supplies the vehicle’s USB interface with stable 5V power for charging smartphones and other accessories and, where the original wiring is connected, can provide data connection to the infotainment system for audio/USB mass storage recognition. The unit is a direct-fit replacement for the listed models and installs into the factory harness without modification in most cases.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot / DS OEM)
• Model: Multiple Citroën, Peugeot And DS Models (see compatibility list)
• Product Codes: 96645227ZD, 6574JV
• Other Numbers: 6574JV | 96645227ZD

Compatibility

Typical compatible vehicles (models commonly using this socket): Citroën Berlingo B9, Citroën Berlingo III, Citroën C2, Citroën C3 II, Citroën C4 II, Citroën C4 Picasso, Citroën C5 X7, DS4, DS5, DS7, Peugeot 3008 I, Peugeot 308, Peugeot 308 T9, Peugeot 5008 I, Peugeot Partner III, Peugeot Partner Tepee. Always cross-check by product code for exact fitment.

Installation Recommendations

• Disconnect the negative battery terminal before starting to avoid short circuits and to protect vehicle electronics.
• Remove trim panels or storage bin to access the original socket — use trim tools to avoid damaging clips.
• Unscrew or unclip the old socket, unplug the wiring harness and carefully note connector orientation.
• Connect the replacement socket into the factory harness, secure it in the mounting bracket, and reassemble trim panels.
• Check the relevant fuse and wiring if the new socket does not power up; test charging and data functions after reconnection.
• Use only appropriate tools and avoid forcing connectors; if wiring is corroded or damaged, repair harness before installing the new socket.

Why This Part Most Commonly Fails

• Mechanical Wear: Frequent plugging/unplugging wears contacts and internal springs, causing intermittent or lost connection.
• Contamination And Moisture: Dirt, liquids or corrosion inside the socket create poor contact or short circuits.
• Electrical Faults: Shorted cables, overcurrent from faulty chargers or blown fuses can render the socket inoperative.
• Physical Damage: Impact, rough handling or damaged trim during previous repairs can crack the socket housing or break solder joints.
• Infotainment Wiring Issues: If the USB is used for data, a problem in the infotainment wiring or module can appear as a socket failure.

Practical Tips For Repairers

• Always verify the socket part number (96645227ZD / 6574JV) to ensure correct replacement.
• Inspect and clean the mating connector pins before fitting the new socket to improve reliability.
• Check the vehicle’s related fuses and ground connections as part of troubleshooting.
• When the USB should provide data to the radio or infotainment, confirm the factory wiring harness is present and connector pins are intact.

This USB socket is intended for professional and experienced DIY installation. Correct replacement restores factory functionality for charging and USB media access while maintaining vehicle interior appearance and reliability.

This replacement manual heating and air conditioning control is designed for Peugeot 207 models with cable-actuated HVAC systems. It provides reliable regulation of airflow direction and basic climate functions through mechanical cables, making it an economical and straightforward repair for workshops and DIY car owners. Searchable by part numbers 6451TP, 6452Q6 and N108224Q, this unit is ideal when original knobs, levers or cable connections become worn or unresponsive.

Key Features And Benefits

• Direct fit for Peugeot 207 vehicles with manual HVAC controls—no electronic coding required.
• Cable-Operated Design: Uses mechanical cables to change airflow direction and blend settings for robust, long-lasting operation.
• Easy To Replace: Accessible behind the dashboard fascia; suitable for professional mechanics and experienced DIYers.
• Search-Friendly Part Numbers: Includes common references 6451TP, 6452Q6 and N108224Q for fast lookup and ordering.

Technical Information

• Manufacturer: Stellantis (Peugeot / Citroën)
• Model: Peugeot 207
• Product Codes: N108224Q, 6452Q6, 6451TP
• Additional Numbers: NFP (as Marked)

Compatibility

Fits Peugeot 207 vehicles equipped with manual heating and air conditioning controls that use cable linkages for flap and vent selection. Confirm part numbers (6451TP, 6452Q6, N108224Q) to ensure correct fitment for your specific variant.

How To Replace

1. Disconnect the battery before starting work to avoid electrical shorts.
2. Remove the lower dashboard trim and the central fascia to access the HVAC control unit.
3. Unscrew mounting fasteners and gently pull the unit forward to access control cables and electrical connector(s).
4. Disconnect the electrical plug(s) and carefully detach the cable ends from the control levers—note orientation for reassembly.
5. Install the new control unit, reconnect cables and connectors, secure mounting screws, and reassemble trim panels.
6. Test all functions (airflow direction, heater controls, fan operation if applicable) before returning the vehicle to service.

Installation Recommendations

• Work On A Cold Vehicle Where Possible Or Ensure Battery Is Disconnected To Prevent Short Circuits.
• Mark Cable Positions Or Take Photos Before Removal To Ensure Correct Reassembly.
• Check Cable Condition And Replace Frayed Or Stiff Cables To Prevent Early Re-Failure.
• Use Appropriate Trim Tools To Avoid Damaging Dash Panels And Fastening Clips.

Why This Part Fails

The most common causes of failure are mechanical wear and cable damage. Repeated use can wear internal levers, plastic gears or detents, leading to imprecise or stuck controls. Cables can fray, stretch or seize due to age and contamination, and external knobs or sliders are prone to breakage. Moisture and dirt ingress accelerate wear of moving parts and electrical contacts when present.

Notes For Professionals And Enthusiasts

This manual control unit is a practical replacement for workshops and home mechanics seeking a straightforward repair without the need for vehicle coding. Because the unit is cable-driven, focus on correct cable routing and secure attachment during installation to restore full functionality.

This HVAC control unit is designed for Peugeot 3008 I (T84) and Peugeot 5008 I (T87) models and carries original product references commonly used in parts searches: 96738322XT, 6451Y3, 6452Y3. Ideal for professional workshops and competent DIY mechanics who need a direct replacement control module for climate and heating functions. Installation of the correct control unit restores intuitive regulation of temperature, fan speed, air distribution and A/C engagement — improving comfort and driving safety. Including the part numbers in the description increases findability for searches and helps ensure correct fitment when cross-referencing catalogs.

Technical Information

• Manufacturer: Stellantis / Citroën Peugeot
• Model: Peugeot 3008 I (T84), Peugeot 5008 I (T87)
• Product Codes: 96738322XT, 6451Y3, 6452Y3
• Other Numbers: 6451Y3 | 6452Y3 | 96738322XT

Function

The unit controls heating and air conditioning functions: temperature setting, blower/fan speed, air distribution modes, recirculation, A/C compressor request and, where applicable, automatic climate regulation logic. It interfaces with vehicle sensors and actuators (thermosteps, blend/stepper motors, blower motor, refrigerant pressure switches) to maintain the selected cabin climate.

Signs Of Fault

• Unresponsive or intermittent buttons and knobs on the climate panel.
• Incorrect temperature regulation (heater or A/C not reaching requested temperature).
• Blower speed stuck at one level or not running at all.
• Erratic automatic climate control behavior or persistent error messages.
• Display failures or missing status indicators on the control unit.

Why This Part Fails Most Often

Common causes of failure include moisture ingress and corrosion of PCB tracks or connectors, worn encoder potentiometers and mechanical switches, cracked solder joints from thermal cycling, and connector pin corrosion. High mileage, prolonged exposure to cabin humidity (for example after water leaks) and heat stress accelerate wear. Failures are more likely in older vehicles or after repeated thermal cycles.

Installation Recommendations

• Safety First: Always disconnect the vehicle battery before starting to avoid short circuits and to protect electronic modules.
• Access: Removal typically requires removal of trim panels around the center console and dashboard, followed by unscrewing the climate control unit retaining screws and releasing wiring harness connectors.
• Tools: Use plastic trim tools to avoid damaging trim clips and a set of Torx/Phillips sockets as required by model fasteners.
• Connector Check: Inspect all harness connectors and pins for corrosion or bent pins before fitting the replacement unit. Clean or repair wiring as necessary.
• Testing: Reconnect the battery only after the unit is mechanically secured and connectors are fitted. Test all climate functions (fan speed range, temperature adjustment, A/C compressor engagement, vent selection) before reassembling trim.
• Final Check: Verify there are no persistent warning lights related to HVAC or climate control in the instrument cluster after installation.

Notes For Professionals And DIYers

This part number is commonly searched by mechanics and independent owners; verify the printed part numbers when matching replacements. While many HVAC control units are direct plug-and-play electrically, differences in software variants or vehicle equipment levels (manual vs. automatic climate control, presence of additional sensors) may affect fitment. Replace faulty units with care and ensure connectors are fully seated.

This heater and climate control unit is a direct-fit solution for Citroën C3 II and DS3 models, designed to restore precise manual control over cabin temperature, airflow direction and fan speed. Ideal for professional workshops and DIY mechanics who need a reliable replacement part listed under references 9675400280, 400018005 or 6452R3. The unit is compatible with cable-operated HVAC linkages and offers straightforward installation into original dashboard mounting points, helping you get the climate system back to proper working order quickly.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C3 II (A51), DS3
• Product Codes: 9675400280
• Other Numbers: 400018005, 6452R3

Fitment And Compatibility

Intended for vehicles using the manual heater/climate control panel with mechanical cable actuators. Confirm the part numbers 9675400280 / 400018005 / 6452R3 against the unit currently fitted to the vehicle when possible. Common applications include Citroën C3 II (A51) and DS3 dashboards that use cable linkages for temperature and flap control.

Function And Features

• Manual control of cabin temperature, fan speed and airflow distribution via mechanical cables.
• Prepared for original cable attachment points (type 6452R3 linkage).
• Direct-replacement form, fit and function for compatible dashboards — uses original mounting bosses and electrical connectors where applicable.
• Part numbers printed for quick identification: 9675400280, 400018005, 6452R3.

Replacement Procedure

Removal and installation should be performed by a competent mechanic or an experienced DIYer. Typical steps:

• Disconnect the negative battery terminal before starting work to avoid electrical shorts and preserve system settings.
• Remove the center dashboard trim panels to access the control unit; retain all screws and clips for reassembly.
• Note the position of each cable and clip before disconnecting — mark cables if necessary to ensure correct reattachment.
• Detach cables from the control levers, unplug any electrical connectors, and remove the mounting screws to free the unit.
• Install the new control unit in reverse order: secure mounting screws, connect cables to the correct levers, plug in connectors and test all functions (fan speeds, temperature change, flap selection) before reassembling trim.

Common Failure Reasons

• Mechanical Wear: Plastic lever ends, cable ends or internal slider components can fracture or wear out after years of use.
• Cable Fatigue or Breakage: Cable housings can seize or cables can snap, preventing proper movement of flaps or temperature sliders.
• Contamination: Dust, debris or spilled liquids can interfere with smooth operation and cause sticking or intermittent function.
• Broken Mounting Clips: Vibrations and repeated servicing can break mounting tabs, resulting in loose or misaligned control units.

Installation Recommendations

• Always disconnect the battery before disassembly to reduce the risk of short circuits and preserve vehicle electronics.
• Handle plastic levers and cable ends gently — they are often the weakest points and can break if forced.
• Before final reassembly, test all HVAC functions with the dash exposed to verify correct cable routing and full range of motion.
• If cables show signs of fraying, stiffness or corrosion, replace the cable assemblies at the same time to prevent premature repeat failures.
• Use OEM-type fasteners and ensure clips are fully engaged to avoid rattles and misalignment after installation.

This heater and climate control unit is suitable for professional garages and independent mechanics seeking a reliable part referenced under 9675400280 / 400018005 / 6452R3. Correct installation restores precise manual HVAC operation and improves cabin comfort for drivers and passengers.

Description

Replacement heater and air conditioning control unit designed for Peugeot 206 and 206+ models. This unit provides reliable control over cabin temperature, ventilation modes and air distribution. Intended for professional workshops and experienced DIYers, the control offers intuitive operation and direct compatibility with vehicles that use the Bowden cable (cable) actuator version.

Key Features

• Direct-fit control for Peugeot 206 / 206+ HVAC systems.
• Compatible with listed product codes for easier lookup and replacement.
• Controls temperature selection, fan speed and air distribution via cable linkages.
• Durable mechanical design with serviceable control cables.

Compatibility

Designed primarily for Peugeot 206 and Peugeot 206+ vehicles. Often searched by part numbers 6451EJ, 6451VH, 6451EL — confirm the match with the unit currently fitted to the vehicle before installation.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Peugeot 206; Peugeot 206+
• Product Codes: 6451EJ, 6451VH, 6451EL
• Additional Numbers: 6451EJ | 6451VH | 6451EL

Replacement Procedure (Overview)

Removal and installation are straightforward for a trained mechanic or experienced DIYer. Typical steps:

• Disconnect the negative battery terminal before starting work to avoid short circuits.
• Remove surrounding trim and centre console panels to access the heater control unit.
• Detach control knobs and release retaining clips or screws holding the unit in place.
• Carefully disconnect the Bowden cable linkages and any electrical connectors.
• Install the new control unit, reconnect cables and connectors, then refit trim and knobs.
• Reconnect the battery and verify all HVAC functions: fan speeds, temperature control, and distribution positions.

Installation Recommendations

• Always Disconnect The Battery Before Removal/Installation To Prevent Electrical Damage.
• Handle Bowden Cables Carefully To Avoid Kinking Or Stretching; Replace Frayed Cables If Found.
• Check And Clean Electrical Connectors For Corrosion Before Reconnecting.
• Test All Functions After Installation; Verify Airflow Direction And Temperature Response.
• Keep Fasteners And Trim Clips Organized During Disassembly To Ensure Proper Reassembly.

Why This Part Commonly Fails

Failures are usually caused by mechanical wear and environmental factors rather than electronics. Common issues include frayed or stretched Bowden cables, worn plastic sliders and detents, broken control knobs, dirt ingress, and connector corrosion. Long service life and frequent use accelerate wear; impacts or improper removal can also damage the unit.

Advice For Buyers

If the current control shows stiff movement, slipping cables, intermittent fan control or broken knobs, replacement of the whole control assembly is often the most efficient repair. Using the correct part code (6451EJ / 6451VH / 6451EL) helps ensure fitment. Ideal for workshop stocking or DIY repairs on Peugeot 206 and 206+ vehicles.

Purchase Information

Searchable by part numbers 6451EJ, 6451VH, 6451EL. Add to your cart for a direct replacement unit compatible with Peugeot 206 / 206+ HVAC setups that use cable-operated controls.

This HVAC control panel is a direct-fit unit for Citroën C4 II (C4 B7) vehicles and carries common PSA part references. It manages cabin temperature, airflow distribution and user inputs for the heater and air conditioning system. Supplied with control cables, it is intended for professional workshops and experienced DIYers who carry out dashboard and ventilation system repairs. Known references for quick lookup: T1008542J, 6452V9, 6452W1.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C4 II (C4 B7)
• Product Codes: T1008542J, 6452V9, 6452W1
• Other Numbers: 6452V9 | 6452W1 | T1008542J

Compatibility / Applications

Fitment primarily for Citroën C4 II (C4 B7) vehicles that use cable-operated HVAC controls. Always verify the part numbers listed above against the part you are replacing to ensure correct fitment.

Function And What To Expect

The unit provides the driver interface for the climate system: it routes commands to the blower, temperature selection (via control cables and/or actuators), and air distribution flaps. With the supplied control cables, temperature and mode selection are mechanically linked to the ventilation box. Proper operation restores accurate temperature control, reliable airflow selection and full usability of HVAC functions.

How To Replace

• Prepare: Park vehicle on level ground and ensure ignition is off.
• Safety: Always disconnect the negative battery terminal before any dashboard or electrical work.
• Access: Remove surrounding trim pieces and center console elements to gain access to the control unit mounting points and cable connections.
• Disconnect: Carefully detach control cables from their levers and unplug electrical connectors. Note cable routing and positions for reassembly.
• Remove And Install: Unscrew the unit, fit the replacement, reconnect electrical connectors and reattach control cables in the exact positions to avoid misalignment.
• Test: Reconnect the battery, start the vehicle and verify all HVAC functions, cable movements and mode positions before refitting trim panels.

Installation Recommendations

• Follow manufacturer trim removal procedures to avoid damaged clips and panels.
• Label cable ends or take photos before removal to ensure correct reattachment and cable routing.
• When refitting control cables, ensure smooth movement without binding; improper routing causes poor temperature control and accelerated wear.
• Check connectors for corrosion or bent pins and clean contact surfaces if necessary.
• After installation, verify blower speeds, temperature response and distribution positions through full range testing.

Most Common Failure Reasons

• Mechanical Wear Of Control Cables: Fraying, stretched or seized cables cause inaccurate temperature or mode selection.
• Broken Levers Or Clips: Plastic levers and clips used in the control mechanism can break with age or forceful operation.
• Electrical Contact Issues: Corroded or intermittent connectors lead to loss of some control functions or erratic behavior.
• Moisture Ingress And PCB Faults: Condensation or spills can damage the panel electronics, causing partial or total failure.
• Misadjustment After Service: Incorrect cable routing or improper reassembly results in poor control response and perceived unit failure.

This control panel is a practical replacement part for professionals and skilled DIYers servicing Citroën C4 II climate systems. Clear identification by the listed part numbers speeds up ordering and ensures correct fitment. Order now to restore accurate climate control and dependable cabin comfort.

Premium OEM CD car radio suitable for Citroën C4 II (B7) models. This original-equipment unit is a direct-fit replacement for workshops and experienced DIY mechanics looking to restore factory audio functionality without losing vehicle integration. The radio accepts standard ISO connectors and retains compatibility with factory antenna and steering wheel controls in vehicles with original wiring. Commonly searched by part numbers, this unit is listed under 9666994580 and related reference numbers, making it easy to find when ordering or cross-referencing.

Technical Information

• Manufacturer: Stellantis (Citroën)
• Model: Citroën C4 II (B7)
• Product Codes: 9666994580
• Other Numbers: 1611729080, 1613842980, 6574SN

Function And Features

This unit provides AM/FM radio reception and a built-in CD player with front-panel controls. As an OEM radio it is designed to integrate with the vehicle’s original audio wiring, antenna and, where fitted, factory steering wheel audio controls and vehicle CAN systems. The device offers straightforward operation and an OEM look that preserves the dashboard appearance.

Replacement Procedure

Recommended basic steps for removal and installation (for experienced mechanics or competent DIYers):

• Disconnect the negative battery terminal before starting to avoid short circuits or damage to vehicle electronics.
• Carefully remove surrounding trim panels using plastic pry tools to avoid damage to clips and fascia.
• Unscrew the radio mounting bolts and slide the unit clear of the dash.
• Disconnect all wiring harness connectors, antenna lead and any amplifier or external module plugs. Inspect connectors for corrosion or bent pins.
• Fit the replacement unit by reversing removal steps: connect harness, antenna and secure mounting bolts. Refit trim panels.
• Reconnect the battery and verify radio power, station reception, CD mechanism operation and steering wheel control functionality (if applicable).

Recommended Tools

• Plastic trim removal tools
• Screwdrivers and appropriate Torx bits
• Digital multimeter for quick voltage checks
• Replacement radio removal keys (if required by vehicle)

Why This Part Most Commonly Fails

Typical failure modes for factory CD radios include mechanical wear of the CD mechanism (failure to load/eject or read discs), degraded solder joints on power supply components, corrosion on connectors due to moisture ingress, and intermittent power issues caused by loose wiring or blown fuses. Heavy use of CDs, extended exposure to heat and humidity, or water leaks into the dash area accelerate wear. Electrical faults are often repairable but replacing the complete unit is usually the fastest and most reliable solution in a workshop environment.

Installation Recommendations

• Always disconnect the battery before removing the unit to protect vehicle electronics.
• Check and, if necessary, replace the relevant fuses and inspect the antenna connector for corrosion to ensure good reception after installation.
• Retain any vehicle-specific brackets or foam pads and transfer them to the replacement radio for a secure fit and correct dash alignment.
• If steering wheel control functions are lost after installation, verify connector pinout and CAN connections; an interface module may be required in some conversions.
• Test all functions (radio, CD, mute, steering wheel controls) before reassembling trim panels to avoid repeat disassembly.