Description
Radio and on-board computer display for PEUGEOT 407. Some functions may need to be activated via diagnostics.
This genuine-fit display is designed as a direct replacement for the Peugeot 407 centre stack/radio and instrument-panel computer display. Ideal for professional workshops and competent DIY mechanics who need a reliable, OEM-style solution, the unit restores clear readout of radio menus, trip computer data and vehicle messages. Common search terms that help customers find this part include Peugeot 407 radio display, on-board computer display, and part numbers 9666631380 / 659349.
Key Functions: The display presents radio information, audio source and track data, onboard computer readouts such as average/instant fuel consumption, range, trip distance and outside temperature, plus simple menu prompts and warning messages. Depending on vehicle configuration, some features may require activation or coding via diagnostic equipment.
Technical Information
- Manufacturer: Stellantis / Peugeot
- Model: Peugeot 407 (compatible with standard factory radio/on-board computer installations)
- Product Codes: 9666631380
- Additional Numbers: 659349
Installation Recommendations
Suitable for experienced mechanics and capable DIYers. Typical replacement steps:
- Park on level ground, set handbrake and prepare trim tools to avoid damage to the dashboard surfaces.
- Disconnect the negative battery terminal before starting work to prevent electrical damage and short circuits.
- Carefully remove the surrounding trim panels (centre fascia) using plastic trim tools to access the radio/display unit screws.
- Unscrew the unit, slide it out, and gently unplug the multi-pin connectors and antenna lead. Note connector orientation and locking tabs.
- Fit the replacement display by reconnecting the plugs and securing the unit with the original fasteners. Refit trims and reconnect the battery.
- After installation, check basic functions. Where menu features are inactive or certain messages reappear, activation or coding via diagnostic tool may be required.
Why This Part Fails
Display failures on Peugeot 407 units commonly result from age-related issues and environmental factors: LCD degradation (loss of contrast or dead pixels), failed backlight, cracked display lens, deteriorated solder joints on the display’s PCB, connector corrosion or flex-cable damage. Intermittent faults can also be caused by poor grounding or voltage spikes. In some cases, software or configuration faults mean a working display needs reinitialisation or coding to restore full functionality.
Notes For Professionals
Because some features depend on vehicle equipment level and software settings, diagnostic activation (DiagBox or equivalent PSA-compatible tool) may be necessary to enable specific options after fitting. Verify correct connector seating and inspect wiring for abrasion or corrosion when diagnosing intermittent problems.
