Description
Rear Seat Belt Left And Right For Citroën C4 II And DS4. FXX Version – Black With Alarm
High-quality rear seat belt assembly for Citroën C4 II and DS4 models, supplied in FXX specification (black webbing) with built-in alarm sensor for the seatbelt reminder. This replacement belt is intended for both left and right rear seating positions and is a direct-fit item commonly searched by part numbers 96871541XX, 8975ZR or 8976C2. Designed for professional workshops and competent DIYers, the belt restores occupant restraint reliability and corrects warning chime or indicator faults related to the buckle sensor.
Technical Information
- Manufacturer: Citroën / Peugeot (Stellantis)
- Model: Citroën C4 II, DS4
- Product Codes: 96871541XX, 8975ZR, 8976C2
- Additional Numbers: FXX (Specification Code), Black With Alarm
Fitment And Function
This assembly replaces the rear left or right seat belt. Its primary function is occupant restraint during a collision and to work with the vehicle’s seatbelt reminder system via an alarm/buckle sensor. The FXX designation denotes the trim/specification (black webbing) and the unit includes the sensor needed to trigger the seatbelt warning light or chime when a passenger is seated without fastening the belt.
Typical Faults And Why The Part Fails
- Webbing Wear: Fraying, cuts or excessive wear from long-term use or sharp objects can compromise strength and lockability.
- Retractor Failure: Dirt, corrosion or internal spring/damper wear can cause the retractor to stick or fail to lock properly.
- Buckle Or Sensor Fault: Electrical connector issues, corrosion or mechanical wear in the buckle can trigger false alarms or prevent the reminder from functioning.
- Accident Damage: After an impact, belts may be stretched or pretensioners (if fitted) may have activated and the belt requires replacement.
Replacement Procedure (Overview)
- Access: Remove interior trim panels and seat cushion as required to reach the belt anchor points and buckle connector.
- Disconnect: If the vehicle is fitted with airbag/pretensioner systems, follow manufacturer safety instructions; disconnect the battery and wait the recommended time before starting work.
- Unbolt: Remove lower anchorage bolts and the upper shoulder anchor. Disconnect the buckle electrical connector carefully if present.
- Install: Fit the new belt in reverse order, ensure webbing routes correctly, connectors seat fully and protective clips are refitted.
- Torque: Tighten mounting bolts to the manufacturer’s specified torque values and check secure seating of trim pieces.
- Function Test: Verify retraction, locking under load and correct operation of the seatbelt alarm/buckle sensor and dashboard indicator.
Installation Recommendations
- Use correct tools and torque settings; improper fastening can compromise safety.
- Inspect the new belt for damage before fitting and confirm electrical connector integrity where applicable.
- After installation, test the belt for smooth retraction, firm locking and proper alarm functionality with an occupied-seat simulation or approved diagnostic method.
- If the vehicle has pretensioners or integrated pyrotechnic devices, have replacement performed or checked by a qualified technician following manufacturer safety procedures.
- Keep the interior trim and anchorage areas clean and free of debris to avoid premature wear.
Why This Part Is Most Commonly Replaced
Rear seat belts are typically replaced due to visible wear to the webbing, malfunctioning retractor mechanisms, or failure of the buckle/sensor that causes persistent warning lights or chimes. Belts should also be replaced after any significant collision even if no external damage is obvious, because internal components or pretensioners may have been activated.
Part numbers and codes are commonly used by mechanics and DIY enthusiasts to find the correct replacement quickly; check the listed Product Codes to ensure match with the vehicle’s specification and seating position before installation.
