Description
Window regulator mechanism for the left rear window for PEUGEOT 307 5-door. Rear door on driver’s side.
High-quality electric window regulator mechanism designed for the left rear door of the Peugeot 307 five-door. This replacement unit (part references 400585V / 9223A2) restores smooth, reliable window operation and is suitable for mechanics and experienced DIY enthusiasts who maintain Peugeot vehicles. The assembly replaces worn cables, broken sliders or failed motors that commonly cause windows to jam, rattle or stop moving entirely. Keywords: Peugeot 307 window regulator, left rear window regulator, 400585V, 9223A2.
Technical Information
- Manufacturer: Stellantis (Peugeot)
- Model: Peugeot 307 (5-door) — Left Rear Door (Driver’s Side)
- Product Codes: 400585V, 9223A2
- Other Numbers: NFP
Fitment
Fits Peugeot 307 five-door models for the left rear door. Intended as a direct replacement for the original window regulator assembly with the listed product codes. Verify physical match with the removed unit before final installation.
Installation Recommendations
Recommended for professional fitment or by experienced DIY mechanics. Follow these general steps:
- Disconnect the negative battery terminal before starting to prevent accidental motor activation and short circuits.
- Remove the interior door trim and any water shields to access the regulator area. Use proper trim tools to avoid damaging clips and panels.
- Carefully support or lower the glass to access the bolts that attach the glass to the regulator. Secure the glass in position before removing the regulator.
- Disconnect the electrical connector for the window motor. Unbolt and remove the old regulator assembly.
- Install the new regulator in reverse order: position and bolt the regulator, reattach the glass, connect the motor, and test window operation before reassembling the door trim.
- Lubricate guide rails and check glass alignment. Replace any broken clips or worn seals to ensure smooth operation and watertight sealing.
- After installation, cycle the window several times to confirm correct travel and to seat components.
Why This Part Fails Most Often
- Cable Wear Or Breakage: The most frequent cause is frayed or snapped cables in the regulator, leading to uneven movement or complete failure.
- Worn Plastic Sliders And Guides: Plastic sliders and mounting points can crack or wear, causing the glass to bind or drop out of alignment.
- Motor Failure: Brushes or the motor gearbox can wear out over time, especially with heavy use.
- Water Ingress And Corrosion: Moisture entering the door can corrode moving parts and electrical connectors, accelerating failure.
- Mechanical Misalignment Or Impact Damage: Door impacts or improper previous repairs can bend tracks or damage mounting points.
Choosing the correct replacement regulator and following proper installation steps will restore reliable window operation and prevent premature re-failure. For best results, inspect associated door components (clips, seals, guide rails and connectors) while replacing the regulator.
