Description
Left roof airbag for CITROËN C4 3-door and 5-door vehicles. Driver side.
Product Overview
This left roof (curtain) airbag is designed for the Citroën C4 (first generation) 3‑door and 5‑door models and is intended for the driver side protection. It is suitable for replacing a deployed or defective curtain airbag and restores side head protection in the event of a side impact or rollover. Common search terms include Citroën C4 roof airbag, left curtain airbag, part number 9646572180 and 833133.
Key Features
- Direct fit for Citroën C4 I (3‑door and 5‑door) driver side roof curtain.
- Provides rapid head protection in side impacts and rollovers.
- OEM cross-reference numbers included for easy identification (9646572180, 833133).
- Intended for professional replacement after deployment or when SRS faults indicate curtain airbag failure.
Fitment
Designed specifically for Citroën C4 (first generation) 3‑door and 5‑door models. Check the vehicle model and part numbers (9646572180, 833133) when selecting this item to ensure compatibility with your vehicle’s trim and SRS configuration.
Installation Guidelines
- Safety First: Always disconnect the vehicle battery before starting any SRS work and wait at least 10 minutes to allow residual energy to dissipate.
- Interior Disassembly: Remove the necessary trim and headliner sections to access the roof rail and airbag fastenings. Keep fasteners and trim clips organized for reassembly.
- Airbag Removal: Unplug the SRS connector(s) carefully and unbolt the airbag from the roof rail. Avoid bending or creasing the airbag fabric and do not place the airbag face down on hard surfaces.
- Installation: Position the replacement curtain airbag along the roof rail in the correct orientation, secure all mounting points, and reconnect the SRS connector(s) firmly.
- Final Checks: Refit headliner and trim, reconnect the battery, and clear SRS fault codes with a compatible diagnostic tool. Verify that the SRS warning lamp extinguishes and that there are no new fault codes related to the curtain airbag.
- Recommendation: If you are not experienced with SRS systems or lack a diagnostic tool, have the final coding and system checks performed by a qualified technician.
Common Failure Causes
- Deployment During Collision: The most common reason for replacement is deployment following a side-impact or rollover incident.
- Electrical Faults: Damaged or corroded wiring and connectors in the roof rail or poor contacts can trigger SRS warning lights and render the airbag inoperative.
- Water Ingress: Leaks from sunroof drains or door seals can cause corrosion of connectors and wiring, leading to faults.
- Previous Repair Damage: Improper removal or reinstallation during prior repairs can damage the airbag, its mounting points, or harness.
- Age Or Environmental Stress: Although rare, long-term exposure to moisture or heat cycles can contribute to connector degradation or mounting corrosion.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C4 I (3‑door and 5‑door)
- Product Codes: 9646572180
- Other Numbers: 833133
Why Replace This Part
If the vehicle’s SRS lamp indicates a curtain airbag fault, after an accident where the curtain airbag deployed, or if inspection reveals visible damage or corrosion to the airbag assembly, replacement is required to restore occupant protection. Replacing the airbag and resolving underlying wiring or connector issues will re-enable proper SRS function and safety performance.
