Description
Car Radio BLAUPUNKT RD4 B5 N1 With CD For Citroën And Peugeot Vehicles. Radio Must Be Coded To The Vehicle Using Diagnostic Equipment.
Description
High-quality aftermarket replacement head unit based on the Blaupunkt RD4 platform, equipped with a CD player and designed for use in a range of Citroën and Peugeot models. This unit is a direct-fit option for workshops and experienced DIY mechanics who need a reliable audio solution that preserves original dashboard integration and factory wiring. Ideal keywords for search and fitment checks include Blaupunkt RD4, RD4 B5 N1, Citroën radio, Peugeot radio and the OEM reference numbers listed below.
Compatibility
- Citroën: C2, C3 (C3 I), C3 Pluriel, C4, C8
- Peugeot: 207, 307 (Mk2 / 307 II), 807
- Fits vehicles from Stellantis group that used the RD4 platform with the matching connector and mounting bracket.
Technical Information
- Manufacturer: Blaupunkt
- Model: RD4 B5 N1
- Product Codes: 9647521077, 9659138977
- Additional Numbers: 657932, 6579PC
Installation Recommendations
- Always disconnect the negative battery terminal before starting work to avoid short circuits and protect vehicle electronics.
- Remove trim panels carefully using appropriate plastic pry tools to avoid damage. Use radio removal keys where required to extract the original head unit from the dash.
- Unplug the antenna lead and wiring harness connectors, noting connector orientation and any retaining clips.
- Fit the replacement unit, secure the mounting brackets, reconnect the antenna and wiring harness, and refit trim.
- Important: The radio must be coded/programmed to the vehicle using diagnostic equipment. Recommended tools and procedures for coding: PSA DiagBox / Lexia / PP2000 or equivalent PSA diagnostic interfaces. Coding should be performed by a technician experienced with PSA systems to ensure proper radio recognition and functionality.
- After coding, verify audio output, CD read function, display illumination and steering wheel control operation (if applicable).
Why This Part Typically Fails
- Mechanical Wear: The CD mechanism is subject to mechanical wear and dust, causing read errors or failure to accept/eject discs over time.
- Electrical Issues: Corroded connectors, blown fuses or intermittent power supply can cause unit malfunction or loss of memory settings.
- Environmental Damage: Moisture ingress, heat cycles and vibration in the dashboard area can degrade internal components, including solder joints and electrolytic capacitors.
- Anti-Theft / Coding Lock: If a unit is swapped without proper diagnostic coding, the radio may remain locked or inoperative until correctly programmed to the vehicle.
Notes For Mechanics And DIYers
This radio suits workshops and competent DIY mechanics who are comfortable removing dash trim and performing electronic reinitialisation. Keep the product codes listed above ready when searching for spare parts or referencing wiring diagrams. Proper coding is essential for full functionality—plan for a coding session with PSA-compatible diagnostic equipment as part of the replacement procedure.
