This display module restores radio and onboard computer readouts and menus for Peugeot 807 and Citroën C8 vehicles. It is a direct-fit replacement for factory dashboard displays and is commonly searched by part numbers, so entering codes like 9665989780, 9665989780-01, 9821852480, 6593T6 or 6593T7 will help you find the correct unit. Designed for professional fitters and experienced DIY mechanics, the unit displays radio information, trip computer data and system messages clearly and reliably when properly installed and configured.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Peugeot 807, Citroën C8 (From 2005)
• Product Codes: 9665989780-01; 9665989780; 9821852480
• Other Numbers: 6593T6; 6593T7; SW V71.3; HW V1503

Function And Application

The unit provides the visual interface for the radio and vehicle onboard computer: station and media info, clock, trip computer readouts, warning messages and simple menu navigation. It is intended for vehicle dashboards where the factory display has failed, is dim, shows corrupted graphics, or no longer responds. Software Version SW V71.3 and Hardware Version HW V1503 correspond to the firmware/hardware identifiers printed on compatible units.

Installation And Recommendations

• Disconnect the vehicle battery before starting work to avoid short circuits and to protect electronic modules.
• Remove surrounding trim and unscrew the head unit following manufacturer procedures to access the display connector. Handle flat-flex cables and connectors carefully to avoid damage.
• Check connector pins and harness for corrosion or bent pins before fitting the replacement. Clean contacts if necessary.
• After mechanical installation, Some Functions May Need To Be Configured To The Vehicle With Diagnostic Equipment; use PSA diagnostic tools (DiagBox/Lexia) for parameter adaptation if required.
• Secure the unit and reassemble trim. Reconnect the battery and verify operation of radio, clock and trip computer functions.

Replacement Procedure

1. Park vehicle on level ground, engage parking brake and remove ignition key.
2. Disconnect negative battery terminal.
3. Remove dashboard trim panels to access the head unit and display.
4. Unplug display connectors and carefully detach any ribbon cables.
5. Fit the new display, reconnect cables, and reassemble panels.
6. Reconnect battery and perform a functional check. If menus or features are missing, perform diagnostic configuration with PSA tools.

Why This Part Most Often Fails

• Age-Related Component Wear: Backlight units, LCD layers or internal capacitors can degrade over time and cause dimming, lines, or full failure.
• Thermal Stress: Heat cycles in the dashboard can accelerate solder joint cracks or component failure on the display board.
• Connector Issues: Loose, corroded or damaged ribbon cables and harness connectors lead to intermittent or total loss of display data.
• Software/Configuration Faults: Incorrect or corrupted software and configuration data can make features unavailable until the unit is adapted with diagnostic equipment.
• Moisture Ingress Or Impact Damage: Water penetration or shocks from collisions can damage the display electronics.

Who Should Install

Recommended For Professional Fitters And Experienced DIY Mechanics. If diagnostic adaptation is required, use of PSA Service Tools (DiagBox/Lexia) is advised to ensure full functionality.

Notes

Part numbers And Software/Hardware Identifiers Are Included To Help You Match The Correct Unit. Search By 9665989780, 9665989780-01, 9821852480, 6593T6 Or 6593T7 For Fast Identification.