Description
Car radio with CD made by Continental was removed from a Citroën C4 Picasso 2010. The radio must be paired to the vehicle using diagnostic programming. Tested and fully functional.
Original Continental RD4N2M-03 unit, a direct-replacement car radio for many Citroën and Peugeot vehicles. Ideal for professional workshops and competent DIY mechanics looking to restore audio and CD playback in PSA cars. The unit is often searched by part numbers 96660456XT, 16077577XT or code 6574LW, so having the correct reference speeds up identification and installation.
Technical Information
- Manufacturer: Continental
- Model: RD4N2M-03 (Original unit from Citroën C4 Picasso 2010)
- Product Codes: 96660456XT, 16077577XT
- Other Numbers: 6574LW
Compatibility and Fitment
Fits vehicles in the PSA group equipped with the RD4N2M-03 radio unit. Confirm fitment by matching the part numbers listed above. Common application: Citroën C4 Picasso (2010). This unit replaces factory-installed RD4-type radios and uses the vehicle’s original connectors and dash mounting points.
Installation Recommendation
- Always disconnect the vehicle battery before starting removal or installation to avoid electrical damage.
- Remove surrounding trim panels and unscrew the radio mounting screws; carefully pull the unit forward to access connectors.
- Unplug all harnesses and antenna connector, then transfer any brackets or trim as needed between units.
- After mechanical installation, the unit must be paired/coded to the vehicle using diagnostic programming to enable radio and security functions.
- Installation and diagnostic pairing should be performed by a qualified technician with appropriate PSA diagnostic equipment when possible. After fitting, verify all audio functions and steering wheel controls (if equipped).
Why This Part Fails Most Often
Common causes of failure include wear of the CD mechanism over time, ingress of moisture or dust, electrical faults such as connector corrosion or intermittent power, and software/security lock issues that prevent normal operation until the unit is properly coded to the vehicle. Mechanical damage from impact or improper removal can also render the unit inoperative.
Additional Notes
This is an original used radio removed from a Citroën C4 Picasso 2010 and is supplied as shown. Because the unit is paired to its original vehicle, diagnostic pairing is required to restore full functionality after installation. The unit supports standard radio and CD functions as per the original factory specification.
