This Continental RD4N1M CD car radio is a direct-fit entertainment unit commonly used in Peugeot 308 vehicles. Designed for professional installers and DIY mechanics, the unit provides reliable AM/FM radio reception and a built-in CD mechanism in a factory-style head unit. The radio is frequently identified and ordered by product codes, so check the part numbers below when searching or replacing the original unit.

Technical Information

• Manufacturer: Continental (Stellantis OEM supplier)
• Model: RD4N1M
• Product Codes: 98032879XH
• Other Numbers: 16077683XH, 6574QR

Compatibility

Fits: Peugeot 308 (unit specified for vehicles equipped with the RD4N1M head unit). Verify the unit shape and connector type visually when replacing older or different head units.

Function And Purpose

The unit provides standard in-dash audio functions: CD playback and AM/FM radio reception in a factory-style double-DIN/1-DIN mounting depending on the vehicle bezel. It serves as the primary audio source and integrates with the vehicle’s wiring and dash controls. Color finish: Warm Silver (HXH).

Installation Recommendations

• Safety First: Disconnect the negative battery terminal before removing the original radio to prevent short circuits and protect vehicle electronics.
• Removal: Carefully remove surrounding trim panels, release the radio using the correct release keys or unscrew retaining fasteners, and pull the unit out to access connectors.
• Electrical Connections: Disconnect antenna, harness plugs and any amplifier or CAN bus connectors. Inspect connectors and wiring for corrosion or damage and clean if necessary.
• Fitting: Plug in all connectors securely, check antenna connection and seat the unit correctly in the chassis. Refit trim panels and fasteners.
• Pairing/Coding: The radio must be coded/paired to the vehicle using appropriate diagnostic equipment (dealer-level or compatible diagnostic tool) before full functionality is restored. Do not attempt to bypass coding. After coding, verify radio, steering wheel controls and any display functions.

Why This Part Fails Most Often

• Mechanical Wear: The CD mechanism is a moving-part assembly and is prone to wear or failure over many years or with heavy CD use.
• Moisture And Corrosion: Water ingress or humidity can corrode connectors, the tuner or internal electronics, causing intermittent faults or total failure.
• Electrical Issues: Loose connectors, blown fuses, or faults in the vehicle’s power supply can prevent the unit from powering up.
• Software/Locking: Loss of coding data after battery disconnection or replacement can render the radio locked until it is re‑coded via diagnostics.

Ordering Tip: This radio is frequently searched by its product numbers 98032879XH, 16077683XH and 6574QR — include those codes in your search to locate compatible units quickly.