Description
Window regulator mechanism for the left rear window for Peugeot 307 5-door. Door behind the driver.
This electric window regulator is a direct-fit replacement designed for the left rear door of the Peugeot 307 5‑door. Ideal for workshops and experienced DIYers who need a reliable unit to restore smooth window operation, the mechanism includes the assembly that guides and drives the glass. The part is commonly searched by its product codes and is suited for owners who need a quick, durable solution for a stuck, noisy, or non-moving rear window.
Benefits & Why Choose This Part
High relevance for Peugeot 307 repair jobs, easy to source by product number and intended for professional mechanics and competent DIY enthusiasts. Replacing the faulty regulator restores proper sealing, reduces wind noise, and prevents water ingress into the door cavity. SEO keywords: Peugeot 307 window regulator, rear left window regulator, 400585V, 9223A2, window mechanism Peugeot 307.
Technical Information
- Manufacturer: Stellantis / Peugeot / Citroën
- Model: Peugeot 307 (5‑door), fits rear left (door behind the driver)
- Product Codes: 400585V, 9223A2
- Other Numbers: NFP
Function
The regulator assembly converts the electric motor’s rotation into linear movement to raise and lower the window glass. It contains guide rails, sliders or cables and a drive mechanism; a fault in any of these elements will prevent smooth operation or stop the window completely.
Typical Symptoms
Common signs that this part needs replacement include slow or jerky window travel, grinding or clicking noises from inside the door, the window falling down inside the door, or the switch activating without any glass movement.
Why This Part Most Often Fails
Failures are typically caused by worn motor brushes, frayed or snapped cables, broken plastic sliders or guides, corrosion from water ingress, and accumulation of dirt or old lubricant causing binding. Frequent use, exposure to moisture and impact damage from closed doors can accelerate wear.
Replacement Interval
There is no strict interval; typical service life depends on use and environment. Many units begin to show issues after 8–15 years or high cycle counts in daily-driven vehicles. Inspect during door repairs or when noise/slow operation is detected.
Installation Recommendations
Recommended For: Professional Mechanics And Experienced DIYers
- Disconnect The Battery Before Starting Work To Avoid Short Circuits.
- Remove The Door Trim Carefully, Keeping Track Of Clips And Fasteners.
- Support Or Remove The Window Glass As Required (secure with tape or suction cups) Before Detaching The Regulator.
- Disconnect The Electrical Connector And Unbolt The Regulator Assembly.
- Fit The Replacement Unit, Reconnect The Motor Connector And Temporarily Test Operation Before Reassembling The Door Trim.
- Lubricate Sliding Tracks With Appropriate Grease And Replace Any Damaged Clips Or Fasteners.
- After Installation, Check Window Alignment, Smooth Travel, And Seal Contact To Prevent Wind Noise And Water Ingress.
Notes For The Technician
Use correct trim tools to avoid breaking door clips. If the glass position must be recalibrated, perform manual adjustment before finalizing the door card reassembly. Replace any corroded fasteners and clean drainage holes to prolong the life of the new regulator.
Fitment is assured when product codes match. This part is tailored for Peugeot 307 rear-left applications and is commonly listed under codes 400585V and 9223A2—search by these numbers for fast identification.
Order now to restore reliable operation of your Peugeot 307 rear window and eliminate noise, leaks, and inconvenient failure during everyday use.
