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.

Product Overview

This electric window motor is designed for the front left (driver’s) door of the Citroën C4 first generation. It provides a direct-replacement solution aimed at professional mechanics and competent DIY enthusiasts who need a reliable part that restores smooth and quiet window operation. Commonly searched using part numbers 9681576080 and 9221AY, this motor is suitable for vehicles that use the original-style window regulator drive.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model: Citroën C4 (First Generation) – Front Left / Driver’s Door
• Product Codes: 9681576080, 9221AY
• Additional Numbers: 9222AY

Function

The unit houses an electric motor that drives the window regulator mechanism, converting electrical input into rotary motion to raise and lower the door glass. It works together with the regulator gears, cables or scissor mechanism (depending on the regulator type) and the door switch to provide controllable and safe window movement.

Replacement Procedure

• Disconnect Battery: Always disconnect the negative terminal of the battery before starting work to avoid short circuits or accidental activation.
• Remove Door Trim: Carefully remove the inner door panel and any weather seals to gain access to the regulator and motor assembly.
• Support Glass: Secure the window glass in the closed position or support it with tape/clamps before detaching the motor/regulator mounting points.
• Disconnect Electrical Connector: Unplug the motor connector and remove any retaining clips or screws holding the motor to the regulator.
• Remove Motor: Detach the motor from the regulator assembly. If replacing only the motor, separate it from the regulator; if exchanging the complete regulator, remove the whole assembly as required.
• Install New Motor: Fit the new motor, reconnect the electrical connector and test the window operation before reassembling the door trim.
• Final Check: Verify smooth travel over full range, no binding, and that switches operate correctly. Refit trim and reconnect the battery.

Installation Recommendations

• Use Correct Tools: Use panel trim tools to avoid damaging clips and door trim. Use correct torque for fasteners where applicable.
• Lubrication: Lightly grease regulator tracks and sliding points with appropriate lubricant to reduce wear and noise.
• Alignment: Ensure glass is correctly seated in the regulator before tightening all fasteners to prevent binding or uneven wear.
• Electrical Checks: Inspect connector pins for corrosion and wiring for damage; clean contacts if needed before connection.
• Test Before Reassembly: Always test full operation of the window before fitting the door card to confirm correct installation.

Common Failure Causes

• Mechanical Wear: Worn brushes, gears or regulator components lead to reduced torque, noise or complete failure over time.
• Water Ingress: Moisture entering the door can corrode motor internals or connectors, causing intermittent or permanent faults.
• Overload/Obstruction: Forcing the window against an obstruction can damage motor gears or the regulator mechanism.
• Electrical Issues: Corroded connectors, broken wires or faulty switches can mimic motor failure; always check wiring before replacing the motor.

Why Choose This Part

Particularly useful when searching by part number (9681576080, 9221AY), this motor offers a straightforward replacement path to restore the driver’s window function. It is engineered to fit original mounting points and electrical connectors for an efficient repair that saves time in the workshop.

Notes For Professionals

This product is aimed at technicians and experienced DIYers. If the regulator shows signs of severe wear or the cable/scissor mechanism is damaged, replace the full regulator assembly to avoid repeated failures.