Description
Third auxiliary brake light for Citroën C4 Coupé first series. Before purchase, make sure your vehicle does not have a damaged supply cable. Tested fully functional.
Product Overview
This third/centre brake light (high mounted stop lamp) is designed for Citroën C4 Coupé (first generation, C4 I). It improves rear visibility and complements the main brake lamps to increase safety during braking. The unit is a direct-fit replacement for vehicles that use the original equipment referenced by the codes listed below.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 Coupé (First Generation, C4 I)
- Product Codes: 9650812280
- Additional Numbers: 6351V2, NFP
Compatibility And Notes
Primarily intended for Citroën C4 Coupé (C4 I). Compatibility is typically determined by matching the product codes above. Before fitting, visually inspect the vehicle connector and wiring loom to ensure the original supply cable is intact — a damaged input cable can prevent the lamp from functioning even if the unit itself is good.
Installation Recommendations
Recommended basic procedure for mechanics and experienced DIYers:
- Open the boot and remove the trim or parcel shelf to access the lamp from inside the boot opening.
- Disconnect the electrical connector and remove any retaining screws or clips securing the lamp.
- Carefully extract the old unit, noting seal placement and wiring routing.
- Fit the replacement lamp, ensure the sealing surface is clean and the gasket is properly seated to prevent water ingress.
- Reconnect the electrical connector, secure the lamp, reassemble trim and test the lamp function with ignition on.
- When working on electrical components, it is recommended to disconnect the battery or follow vehicle manufacturer safety procedures.
Why This Part Most Commonly Fails
Common failure causes include:
- Water Ingress And Corrosion: Leaks or degraded seals allow moisture to reach contacts or the internal circuit, causing intermittent failure or complete loss of function.
- Connector Or Wiring Damage: Chafed, broken, or corroded supply cables and connectors prevent power delivery to the lamp. The original long description warns to check the supply cable before purchase.
- Impact Or Body Damage: Rear impacts or pressure on the boot lid/window area can crack the housing or dislodge the lamp.
- Electrical Faults: Internal driver or bulb/LED failures (depending on variant) can occur over long service life or due to voltage spikes.
Practical Tips
- Always Inspect The Wiring And Connector Pins For Corrosion Before Fitting A New Unit.
- Apply A Small Amount Of Dielectric Grease To Connector Pins To Reduce Future Corrosion.
- Ensure Proper Sealing To Prevent Water Entry—this Extends Service Life.
- After Installation, Verify Stop Lamp Operation From The Rear And Have An Assistant Press The Brake Pedal To Confirm Correct Function.
