Description
Blaupunkt RD4 T5 N2 CD car radio. The radio must be coded to the vehicle using a diagnostic tool. It has two antenna inputs.
This Blaupunkt RD4 T5 N2 replacement head unit is intended for Citroën and Peugeot vehicles and is commonly searched by OEM references such as 9660646577, 6564QT, 6564QV and 6579PS. Built with the classic RD4 platform and integrated CD player, it provides a direct-fit audio solution for workshops and DIY enthusiasts who need a reliable OEM-style radio. The unit’s two antenna inputs improve signal routing for vehicles with separate diversity antennas.
Technical Information
- Manufacturer: Blaupunkt
- Model: RD4 T5 N2
- Product Codes: 9660646577, 6564QT, 6564QV, 6579PS
- Additional Numbers: 9660646577
Compatibility
Direct fit for: Citroën C8 and Peugeot 807. Also compatible with vehicles that use the RD4 form factor and the same HVAC/console mounting. Always verify physical connector and mounting dimensions before installation.
Installation Recommendations
Installation should be performed by an experienced technician or a confident DIYer familiar with vehicle electrical systems. Typical replacement steps:
- Disconnect the vehicle battery to avoid short circuits.
- Remove dashboard trim panels surrounding the head unit using appropriate trim tools to avoid damage.
- Unscrew and slide out the original radio, then disconnect all wiring harnesses and antenna plugs.
- Connect the replacement RD4 unit: main harness, power/ground, speaker outputs and both antenna connectors if applicable.
- Refit the radio into the dash, secure with screws and replace trim panels.
- Important: After physical installation the radio must be coded/loaded to the vehicle using a diagnostic tool so that steering-wheel controls, vehicle settings and immobilizer-related functions operate correctly.
Most Common Failure Reasons
- Age-Related Wear: Moving parts in the CD mechanism can fail over time, causing playback errors.
- Electrical Issues: Corrosion or poor connections at the wiring harness or antenna plugs can lead to intermittent power or signal loss.
- Software/Coding Problems: Units that have lost their vehicle coding or have mismatched software versions may not function fully until reprogrammed with diagnostic equipment.
- Environmental Damage: Moisture ingress or prolonged exposure to heat can damage internal electronics.
Advice For Buyers
If you are replacing a faulty RD4 unit, have the vehicle’s diagnostic interface available for coding after installation. Searchable OEM references such as 9660646577, 6564QT, 6564QV and 6579PS are often used by technicians to find the correct replacement quickly. This radio is suited for professional workshops and competent DIY installers who can perform the mechanical swap and post-installation coding.
