Description
SIEMENS VDO RD4 N1-00 radio with CD for Citroën Berlingo III, C2, C3, C4, C8 and Peugeot 207, 307, 407, 807, Partner III. The radio must be paired to the vehicle using diagnostic programming.
The Siemens VDO RD4 N1-00 is a direct-fit factory head unit used across a range of PSA Group vehicles. This single-DIN unit combines AM/FM radio with a front-loading CD player and full integration with vehicle controls, providing reliable in-car entertainment and RDS station identification. Ideal for workshops and DIY mechanics replacing an original RD4 unit, this part restores factory functionality and keeps steering wheel controls and dashboard integration intact (when fitted on the vehicle).
Key Benefits
- Direct OEM fit for many Citroën and Peugeot models — preserves original look and control functions.
- CD playback and RDS radio for clear station and track information.
- Retains steering wheel audio controls and display information where vehicle wiring and equipment allow.
- Sold under manufacturer reference numbers commonly searched by mechanics and parts buyers.
How It Works And What It Does
The RD4 N1-00 is the factory radio unit responsible for radio reception, CD playback and communicating basic audio commands to the vehicle’s audio system. In vehicles equipped with steering wheel controls or multifunction displays, the unit exchanges data over the vehicle bus to show station and track info and to respond to user inputs from the steering wheel.
Replacement Procedure (Overview)
- Disconnect the vehicle battery before starting work to avoid short circuits and unit damage.
- Remove trim panels surrounding the radio, then extract the head unit using the appropriate removal keys or fastener removal tools.
- Unplug the antenna connector and the vehicle wiring harness connectors from the rear of the unit.
- Fit the replacement unit, reconnect the antenna and wiring harness, reassemble trim and reconnect the battery.
- Perform diagnostic pairing/programming so the radio is authorized and fully functional within the vehicle’s electronic network.
Recommended Installation
Disconnect the battery and follow the vehicle manufacturer’s removal procedure to avoid damage. Because the RD4 radio must be paired/programmed to the vehicle electronics, we recommend using PSA diagnostic equipment (DiagBox/Lexia) or having the final coding performed by a workshop with the appropriate tools. Proper coding ensures the unit is fully integrated with the vehicle’s controls and prevents audio or authorization errors.
Common Failure Causes
- CD Mechanism Wear: Mechanical parts and optical reading components in the CD drive degrade over time, causing read errors or inability to load discs.
- Power Supply Issues: Corroded contacts, blown internal fuses or voltage spikes can lead to intermittent power loss or complete unit failure.
- Button/Display Wear: Frequent use and sun exposure can cause faded displays, unresponsive keys or backlight failure.
- Software/Authorization Problems: Units that are not coded to the vehicle may display errors or be locked; diagnostic programming is required to restore full operation.
Technical Information
- Manufacturer: Siemens VDO
- Model: RD4 N1-00
- Product Codes: 96624490XT, 16077504XT, 6564AK
- Other Numbers: N1-00
Why Choose This Unit
For workshops and experienced DIY mechanics replacing a factory RD4 radio, this Siemens VDO unit restores original functionality and appearance. It is suitable for vehicles listed in the compatibility section and is frequently referenced by its product codes in parts searches, making it easy to identify and order the correct replacement.
Compatibility (Examples)
Commonly fitted to Citroën models: Berlingo III, C2, C3, C4, C8. Commonly fitted to Peugeot models: 207, 307, 407, 807, Partner III. Always confirm the unit’s reference number matches the original unit on the vehicle before installation.
Final Notes
This unit requires diagnostic pairing/programming to the vehicle. Follow safe working practices when removing and installing the head unit to avoid damage to connectors and vehicle electronics.
