The RD4 radio is specifically designed for integration with Citroën and Peugeot vehicles, guaranteeing compatibility and easy installation. During installation, the radio must be programmed using a diagnostic tool to ensure it operates correctly in your vehicle. Thanks to its compact dimensions and direct corresponding wiring, installation is quick and hassle-free.

Technical Information:
Manufacturer: BLAUPUNKT
Model: RD4 CD, compatible with Citroën Berlingo III, C2, C3, C4, C8, Peugeot 207, 307, 407, 807, and Partner III
Product Codes: 9664769977, 6564K3, 6564FJ, 657927, 1614201480
Additional Numbers: 9664769977

This used BLAUPUNKT car radio serves as an economical alternative to new expensive models without sacrificing quality and functionality. Rest assured that each product is thoroughly checked to ensure proper functionality. Enjoy music, podcasts, audiobooks, or radio broadcasts with the quality you can rely on.

Investing in our used BLAUPUNKT RD4 car radio for Citroën and Peugeot is the perfect solution for those seeking quality at a reasonable price. Experience excellent value for money and enjoy every journey to the fullest.

Original Blaupunkt RD4 N1 unit with integrated CD player designed as a direct OEM replacement for selected Citroën and Peugeot models. This unit preserves the factory fit and finish and is ideal for professional workshops and experienced DIY mechanics who need a reliable in-dash solution. When properly installed and coded, the radio restores original radio and CD functions while maintaining compatibility with the vehicle’s dashboard layout and wiring harnesses.

Technical Information

• Manufacturer: Blaupunkt
• Model: RD4 N1 (CD)
• Product Codes: 9650711477, 657927, 1614201480
• Additional Numbers: 1614201480 | 657927 | 9650711477
• Compatible Models: Citroën Berlingo III, Citroën C2, Citroën C3 (including C3 Pluriel), Citroën C4, Citroën C8, Peugeot 207, Peugeot 307, Peugeot 407, Peugeot 807, Peugeot Partner III

Installation Recommendations

• Disconnect Battery Before Work: Always disconnect the vehicle battery before removing or installing the radio to avoid electrical damage and airbag/system faults.
• Use Proper Removal Tools: Use manufacturer-style radio keys or trim tools to avoid damaging dash trim and retaining clips.
• Preserve Connectors: Carefully unplug antenna, power, speaker and CAN/steering-wheel-control connectors. Inspect locking tabs and pins for corrosion or damage.
• Coding Requirement: This unit Requires Coding/Pairing To The Vehicle With A Diagnostic Tool. Coding Is Required To Restore Radio Function And To Remove Anti-Theft Lock. Common Tools: DiagBox / Lexia / PP2000 Or Equivalent PSA Diagnostic Equipment. Coding Is Recommended To Be Performed By A Technician With Appropriate Service Equipment.
• Firmware And Compatibility: After installation, verify radio firmware and vehicle settings. Some functions (e.g., steering wheel controls, display language, clock) may require software configuration.

How To Replace

1. Disconnect The Negative Battery Terminal.
2. Remove Dashboard Trim Panels With Plastic Pry Tools To Access Radio Fasteners.
3. Unscrew/Release Radio Mounting Brackets And Slide The Unit Out Carefully.
4. Unplug Antenna, Power Harness, Speaker Plugs And Any Data/Can Connectors.
5. Fit The Replacement Unit, Reconnect All Plugs And Antenna, Then Temporarily Reconnect Battery To Check Power-Up.
6. Perform Required Coding/Pairing With Diagnostic Tool To Authorize The Radio To The Vehicle.
7. Reassemble Trim Panels And Verify All Functions (Radio, CD, Clock, Steering Controls Where Applicable).

Why It Commonly Fails

• Mechanical Wear Of The CD Mechanism And Laser Assembly Causing Read Errors Or Failure To Load Discs.
• Moisture Ingress Or Condensation Leading To Corrosion Of Internal Contacts Or Connectors.
• Electrical Issues Such As Blown Fuses, Poor Grounding Or Intermittent Power Supply Affecting Unit Operation.
• Connector Corrosion Or Broken Wiring At The Back Of The Unit, Especially In Older Vehicles.
• Anti-Theft Locking/Radio Coding Problems After Battery Replacement Or Unit Swap, Requiring Diagnostic Reprogramming.

Choose this Blaupunkt RD4 N1 unit for a factory-fit replacement that restores CD playback and factory-style operation. Suitable for professional installation and for experienced DIYers prepared to perform the necessary coding with proper diagnostic equipment.

Product Overview

This original-style Blaupunkt RD4 T5 N1 CD radio is a direct-fit multimedia unit for many Citroën and Peugeot models. Designed for workshop use and competent DIY mechanics, the unit retains factory integration for steering wheel controls, display compatibility and vehicle CAN-bus communication. Key search terms: Citroën radio, Peugeot RD4, RD4 T5 N1, 9659139977, 1614201480, car radio with CD, DiagBox coding.

Technical Information

• Manufacturer: Blaupunkt
• Model: RD4 T5 N1 (CD Radio)
• Product Codes: 9659139977, 1614201480
• Other Numbers: 6564K3, 6564FJ, 657927

Compatible Models

Fits a range of PSA vehicles including but not limited to:

• Citroën C2
• Citroën C3 (I) and C3 Picasso
• Citroën C4
• Citroën C8
• Citroën Berlingo III
• Peugeot 207
• Peugeot 307 II
• Peugeot 807
• Peugeot Partner Tepee / Partner III

How To Replace

1. Disconnect the negative battery terminal before starting to avoid short circuits and preserve vehicle electronics.
2. Remove surrounding trim panels carefully with plastic trim tools to access radio mounting bolts or retention clips.
3. Use appropriate radio removal keys or unscrew mounting bolts, then slide the unit out to reach rear connectors.
4. Disconnect antenna, power, speaker and CAN/vehicle harness connectors. Inspect plugs for corrosion or damaged pins.
5. Fit the replacement radio by reversing removal steps. Secure the unit, reconnect harnesses and antenna, and replace trim.
6. Power up and perform required diagnostic coding to enable full integration (see next section).

Installation Recommendations

• Always Disconnect The Battery Before Removal Or Installation.
• Protect Interior Trim Using Soft Tools To Avoid Scratches.
• Check Wiring And Connectors For Corrosion Or Bent Pins Before Reconnection.
• Use Official PSA Diagnostic Software (DiagBox/PP2000) Or Equivalent To Complete Coding And Activation.
• If Steering Wheel Controls Or Display Don’t Work After Fitment, Re-check Coding And Bus Connections.

Reason Why This Part Fails Most Often

Common failure modes for RD4 series radios include mechanical wear of the CD mechanism and laser, intermittent contacts or broken solder joints on the internal PCB, damage from voltage spikes or poor battery disconnection during vehicle work, and connector corrosion from moisture. In many cases faults present as refusal to read discs, loss of audio on one or more channels, missing display information or failure to power up.

Practical Tips For Mechanics And DIYers

• Test Unit Operation On The Bench With A 12V Supply Before Final Fitment To Isolate Vehicle Wiring Issues.
• When Replacing, Keep Original Mounting Hardware And Brackets To Ensure Correct Fit.
• If The CD Mechanism Is Faulty, Consider Replacing The Unit Rather Than Repairing The Mechanism In The Workshop Unless You Have Specific Spare Parts.
• Store Removed Units In A Dry, Static-Free Environment While Awaiting Diagnostics Or Coding.

Note About Coding

This radio requires diagnostic coding to the vehicle to restore full functionality. Coding is performed with PSA diagnostic equipment to pair the unit with the vehicle network and enable features such as steering wheel control and display messages. If you are performing the replacement yourself, ensure you have access to appropriate diagnostic software and follow manufacturer procedures for activation.