Description
Electric window regulator motor for the left front (driver’s) door for Citroën C4 first generation.
This electric motor operates the left front window lifter on the Citroën C4 (first series). It is a direct-replacement drive unit intended for the driver’s door window regulator, providing the up-and-down movement of the glass. Commonly referenced under OEM numbers 9647441880 and 9221AY, this motor is suitable for professional workshops and DIY mechanics looking for a reliable repair part.
Key Benefits
- Direct fit for left front (driver’s) door on Citroën C4 first series.
- Restores smooth and quiet window movement when regulator motor has failed.
- Simple replacement procedure for experienced mechanics and competent DIYers.
- OEM cross-reference numbers included for fast searching and ordering.
Compatibility And Fitment
Direct replacement for Citroën C4 (first generation) left front door window regulator applications. Often searched by part numbers 9647441880 and 9221AY. Verify fitment against the existing part number on the vehicle before installation.
Installation Recommendations
- Always disconnect the vehicle battery before starting any work on door electrics to avoid short circuits and accidental operation.
- Remove the door trim and any vapor barrier carefully to access the regulator and motor. Keep all clips and screws organized for reassembly.
- Lower the glass to the position where the motor/regulator fixing bolts are accessible. Support the glass securely before loosening the regulator mounting points.
- Disconnect the electrical connector, unbolt the motor from the regulator, and remove the unit. Inspect the regulator mechanism and guide channels for wear or damage.
- Fit the new motor in the correct orientation, torque bolts to manufacturer specifications, reconnect the wiring, reconnect the battery briefly and test window function before reassembling the door trim.
- Lubricate regulator tracks and pivot points with suitable grease to reduce future wear and ensure quiet operation.
Common Failure Causes
- Wear of motor brushes and commutator from prolonged use, leading to loss of power or intermittent operation.
- Water ingress and corrosion inside the motor or electrical connector caused by damaged vapor barrier or door seals.
- Mechanical overload when the regulator or guide channels bind, placing excessive strain on the motor and gearbox.
- Broken plastic gears or regulator cables in combined motor-regulator assemblies.
- Electrical issues such as corroded connectors, damaged wiring, or blown fuses in the door circuit.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C4 (First Generation) – Left Front (Driver’s) Door
- Product Codes: 9647441880, 9221AY
- Other Numbers: 9222AY
- Electrical System: 12V DC
- Location: Left Front Door (Driver’s Side)
- Typical Mounting: Integrated or flange-mounted to the window regulator mechanism
Notes For Mechanics
When replacing the motor, always check the condition of the regulator tracks, sliders and glass clamps. Replacing only the motor while the regulator is heavily worn can lead to early recurrence of the fault. For best results, test the complete window operation under load after installation and ensure water seals and vapor barrier are correctly reinstalled to prevent future moisture damage.
