Description
Electric tailgate lock for Citroën and Peugeot vehicles.
This electric tailgate lock is a direct-fit replacement part designed for a range of Citroën and Peugeot models. It restores secure closing and remote locking of the rear hatch by replacing the worn or damaged latch/actuator unit. Frequently searched under part numbers 9646091580 and 871972, this unit is suitable for professional workshops and experienced DIY mechanics who maintain Stellantis vehicles. The assembly houses the latch mechanism and electric actuator that engages the tailgate striker and reports lock status to the central locking system.
Technical information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën Berlingo, C2, C3, C4, C5, C8, Xsara Picasso; Peugeot 206, 307, 406, 607, 807, Partner
- Product Codes: 9646091580
- Additional Numbers: 871972
Function and Typical Symptoms
The electric tailgate lock secures the rear hatch by actuating an internal latch and sending a position/status signal to the vehicle’s central locking system. Common symptoms of a failing unit include intermittent locking/unlocking of the tailgate, grinding or clicking noises during operation, inability to latch or open the tailgate, and fault messages related to the rear hatch on the instrument cluster.
Replacement Procedure (Overview)
Recommended for professional mechanics or competent DIYers with basic tools. Typical replacement steps:
- Always disconnect the battery before starting work to avoid short circuits and electrical damage and follow the vehicle manufacturer’s procedures.
- Open the tailgate and remove the interior trim panel to access the lock assembly (retain clips and screws).
- Disconnect the electrical connector and any release cables or rods attached to the lock.
- Remove the fixing bolts and extract the lock assembly from the tailgate.
- Fit the new unit, secure the bolts to the correct tightness, reconnect cables and the electrical connector, then refit the trim.
- Reconnect the battery and test tailgate operation: manual close, remote locking/unlocking, and central locking feedback. Adjust striker alignment if required for smooth engagement.
Installation Recommendations
- Use correct trim tools to avoid damaging clips and panels.
- Inspect and, if necessary, lubricate the striker with suitable grease to ensure smooth engagement.
- Check wiring harness and connector for corrosion or damage; clean contacts before reconnection.
- After installation, verify central locking operation from all controls (remote, interior switch, and key) and confirm no error messages remain.
Most Common Failure Causes
- Water ingress and corrosion of internal components causing electrical or mechanical failure.
- Wear of mechanical parts or plastic gears inside the latch from frequent use or impact.
- Damaged wiring or connector issues leading to intermittent or total loss of actuator power.
- Striker misalignment causing excessive load on the actuator and premature wear.
Part numbers 9646091580 and 871972 are commonly used when searching for compatible replacement units for the listed Citroën and Peugeot models. This product is aimed at professionals and experienced DIYers who require a reliable replacement tailgate lock to restore proper rear-hatch function.
