Replacement electric window motor designed for the left rear (driver’s side rear) door of the Peugeot 407. This unit restores reliable window movement by driving the window regulator mechanism and is commonly searched for by OEM numbers 9646595680 and 922386. Suitable for professional workshops and competent DIY mechanics who perform bodywork and electrical repairs. The part is compatible with original equipment fitments and is intended to directly replace a failed or worn motor on matching door assemblies.

Technical Information

• Manufacturer: Stellantis
• Model: Peugeot 407
• Product Codes: 9646595680, 922386
• Other Numbers: NFP

Function

The motor converts electrical energy into mechanical rotation to drive the window regulator (scissor or cable type) and raise or lower the glass. It works with the vehicle’s window switches and wiring harness to provide smooth, controlled movement and includes internal gearing and an electric motor assembly tuned to the regulator load.

Compatibility

Intended for Peugeot 407 vehicles fitted with left rear power windows (rear door behind the driver). Verify fitment by comparing the OEM product codes 9646595680 or 922386 with the part to be replaced.

Replacement Procedure (Overview)

• Disconnect the battery before beginning work to avoid short circuits and to protect electronics.
• Remove the interior door trim and any vapor barriers carefully to access the regulator and motor assembly.
• Disconnect the electrical connector from the window motor.
• Unbolt the motor from the regulator and, if necessary, detach the regulator from the door to gain access.
• Install the new motor onto the regulator, ensuring correct alignment of gear engagement and fixing points.
• Reconnect the electrical connector, temporarily reconnect the battery, and test window operation through full travel to confirm smooth movement and correct direction.
• With functionality confirmed, disconnect battery again, refit any vapor barriers and door trim, and torque fasteners to manufacturer specifications.

Mounting Recommendation

Always disconnect the battery before removal and installation. Handle door trim and plastic clips carefully to avoid damage. Ensure the regulator and glass are properly supported during motor replacement to prevent dropping the glass or misalignment. After installation, check window travel limits and adjust regulator stops if required. Use correct torque values for mounting bolts and protect electrical connectors from corrosion by ensuring seals and vapor barriers are intact.

Why This Part Most Commonly Fails

• Mechanical Wear: Internal brushes, commutator, or plastic gears wear out after extended use, causing slow movement or failure.
• Water Ingress and Corrosion: Moisture entering the door can corrode contacts or gear sets, leading to intermittent operation or seizure.
• Regulator Problems: A failing regulator increases load on the motor (bent tracks, worn cables or pulleys), causing premature motor failure.
• Electrical Issues: Damaged wiring, poor connectors, or switch faults can present as motor failure but may accelerate motor wear.
• Overload/Blockage: Obstructions or misaligned glass create overload conditions that damage gears or motor windings.

Search Tips

Customers commonly search using OEM numbers 9646595680 and 922386. Use these codes when checking compatibility or ordering the correct left rear window motor for Peugeot 407.