Description
Third brake light for Citroën C3 first generation. Supplied with socket – bulb functionality not guaranteed.
This centre high‑mount stop lamp (third brake light) is intended for Citroën C3 first‑generation models and is often searched for by part numbers 9638523480 or 6351Q2. Designed for mechanics and competent DIY enthusiasts, the unit restores rear‑end visibility and brake signaling compliance. The item is supplied with the electrical socket; the bulb may not be included or may not be functional, so check the lamp and replace the bulb if necessary before final installation.
Technical Information
- Manufacturer: Citroën (Stellantis)
- Model: Citroën C3 (First Generation)
- Product Codes: 9638523480, 6351Q2
- Additional Numbers: 6351.Q2, 6351Q2, 9638523480
Installation Recommendations
- Work Safely: Switch off the ignition and, if preferred, disconnect the negative battery terminal to avoid short circuits while handling electrical connectors.
- Access: Remove the interior trim panel on the tailgate or rear parcel shelf to reach the retaining screws or clips of the third brake light. Keep all fasteners for reassembly.
- Disconnect: Unplug the lamp connector and, if fitted, remove the bulb from the socket. Inspect the socket and wiring for corrosion or damage.
- Replace: Remove the old lamp assembly, fit the new unit, reconnect the socket and test the brake light function before refitting trim. Ensure gaskets or seals sit correctly to prevent water ingress.
- Final Check: Verify lamp operation with the brake pedal or an assistant; check for secure mounting and that the lens is free of cracks or clouding that could reduce visibility.
Common Failure Causes
- Bulb Burnout: Incandescent bulbs eventually burn out and will need replacement. The supplied socket does not guarantee a working bulb.
- Corrosion And Moisture: Water ingress around the tailgate or degraded seals can corrode contacts or sockets, causing intermittent or permanent failure.
- Electrical Issues: Damaged wiring, poor connector contact, or blown fuses can prevent the lamp from illuminating.
- Physical Damage: Rear impacts or pressure on the tailgate can crack the lens or damage the mounting points.
- Aging Plastics: UV exposure and temperature cycles can make the lens brittle or discolored over many years, reducing light output.
Function
The third brake light (centre high‑mount stop lamp) increases visibility to following traffic, improving safety by providing an additional, centrally located brake signal. Proper operation is critical for road safety and may be required by local vehicle regulations.
Search terms: Third Brake Light Citroën C3, 9638523480, 6351Q2, 6351.Q2. Ideal for professional workshops and experienced DIY installers looking to replace a worn or damaged centre brake lamp on Citroën C3 first‑generation vehicles.
