Citroen C4 II computer radio display 9665500480 6155HT

Description

Multifunctional display for Citroen C4 B7 cars
Tested, fully functional
Some functions may need to be set to the car by diagnostics

Part description

This is a radio/computer display for Citroën C4 II (C4 B7), a used part suitable as a replacement when the original display is non-functional, unreadable or damaged. Thanks to the fact that it is tested and fully functional, it is ready for assembly and subsequent operation in the car. Some cars may require diagnostic function setting after replacement (depending on vehicle equipment and configuration).

Technical information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C4 II (C4 B7)
• Other numbers: 6155HT, 6155HV

Product codes

• Product codes: 9665500480, 6155HT, 6155HV

Installation recommendations

Generally/typically for display replacement (electrical part) the exact steps may vary depending on the dashboard design and vehicle equipment. With this part, some functions may need to be set by diagnostics after assembly.

1) Before assembly

• Compare the part numbers (9665500480, 6155HT/6155HV) to the old part and to the label/marking on the part.
• Check the connectors (number, shape, securing) and for bent pins or damaged wires.
• Visually check the condition of the display: cracks, leaks, burnt spots, damaged mounting.

2) Necessary tools and materials

• Basic set of screwdrivers and ratchets (according to the used connecting material)
• Plastic crowbar for dismantling interior parts
• Clean cloth or contact cleaner (for gentle cleaning of connectors)
• Diagnostics compatible with PSA (for any function settings after assembly)

3) Step-by-step assembly procedure

1. Turn off the ignition and wait for the electronics to go to sleep.
2. Disconnect the battery (recommended to protect the electronics and prevent a short circuit).
3. Dismantle the surrounding dashboard covers to access the display (use a plastic pry bar to avoid damaging the plastic).
4. Unfasten the display and carefully slide it out of the bed.
5. Disconnect the connector(s) – first unlock the connector, then pull without prying the cables.
6. Compare the old and new part one more time (labeling, connectors, mounting).
7. Connect the connector(s) to the new display and check that they are properly engaged and secured.
8. Set the display in position and screw/fasten according to the original attachment.
9. Put back the dismantled interior parts.
10. Connect the battery.
11. Turn on the ignition and verify the basic functions of the display.
12. If some functions do not match the car’s equipment, perform diagnostic settings (telecoding/configuration according to the car’s capabilities).
• 4) Post-assembly checks and test drive/function verification
  • Verify the readability of the display, the backlight and the response to the controls.
  • Check for dropouts, flickering or resetting after driving.
  • If the car requires configuration, check the settings with diagnostics.

  5) The most common assembly mistakes + how to avoid them

  • Disconnecting/connecting connectors with the battery connected → always disconnect the battery, you minimize the risk of short circuit and errors in the electronics.
  • Not closed or poorly secured connector → after connection, check the connector fuse and secure seating.
  • Interior plastic damage → use plastic disassembly tools and proceed patiently.

  Reasons why the part is damaged

  • Aging of electronics and wear of the backlight (weakening, blackouts, flickering).
  • Voltage fluctuations in the on-board network (weak battery, bad charging, improper starting/connection).
  • Moisture and condensation in the interior or leaks that can damage the electronics.
  • Mechanical damage when disassembling the dashboard or careless handling of the connectors.
  • Poor contact in the connectors (oxidation, loosening), which leads to malfunctions.