Description

This left front window regulator mechanism is designed for the driver’s door of the Citroën C4 5-door first generation. It is a direct-fit power window regulator assembly used to raise and lower the front left window smoothly and reliably. Ideal For Professional Garages And Skilled DIY Enthusiasts Who Need A Precise Replacement Part By Part Number.

Key Features And Benefits

• Direct Replacement For The Original Equipment Part Numbers Listed Below, Ensuring Correct Fit And Function.
• Restores Smooth Up/Down Movement Of The Driver’s Window; Eliminates Grinding, Sticking Or Slack In The Glass Movement.
• Durable Mechanical Components: Cable/Gear Drive And Guides Designed To Withstand Regular Use.
• Suitable For Use By Automechanics And Experienced DIYers; Frequently Searched By Part Number For Fast Identification.

How It Works And Typical Failure Modes

The window regulator transfers torque from the window motor to the glass via a cable-and-pulley system or gear mechanism (depending on the exact variant). Over time, wear affects the cables, plastic guides, sliders and gears. Typical causes Of Failure Include:

• Worn Or Frayed Cables Causing Slack Or Complete Loss Of Drive.
• Broken Or Worn Plastic Guides And Sliders Leading To Misalignment And Jamming.
• Corrosion Or Debris In The Door Cavity Increasing Resistance And Straining The Motor.
• Impact Damage From Door Collisions Or Forced Glass Movement.

Replacement Procedure (Overview)

Replacement Requires Basic Workshop Tools And Moderate Skill. Typical Steps:

• Disconnect The Vehicle Battery To Prevent Accidental Window Movement And To Protect Electrical Systems.
• Remove Interior Door Trim And Moisture Barrier Carefully To Access The Regulator.
• Disconnect The Window Motor Electrical Connector And Any Door Wiring Harness Clips.
• Lower The Window To Access Glass-To-Regulator Fixings; Support The Glass Securely Or Remove It If Required.
• Unbolt The Old Regulator Assembly From The Door Shell And Remove It Through The Access Opening.
• Install The New Regulator In Reverse Order: Secure Mounting Bolts, Reconnect Motor And Wiring, Refit Glass And Door Trim.
• Test Full Window Operation And Auto-Reverse/Limit Functions Before Reassembling The Door Trim.

Installation Recommendations

Always Work On A Cool, Stable Vehicle And Keep Fasteners Organized For Reassembly. Use A Second Person To Support The Glass When Removing Or Installing For Safety And To Prevent Damage. Check And Clean The Door Inner Cavity To Remove Rust Or Debris That Could Shorten The New Regulator’s Life. After Installation, Cycle The Window Several Times And Verify Smooth Operation And Correct Alignment.

Why The Part Commonly Fails

The regulator is a wear item subjected To Frequent Cyclic Loads. Repeated Use Combined With Dirt Ingress, Moisture And Age Leads To Cable Stretching, Plastic Component Fatigue Or Corrosion Of Moving Parts. Heavy Use, Blocked Drainage Channels In The Door Or Forced Operation With A Jammed Window Accelerates Failure.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4 (5-Door, First Generation) – Driver’s Door
• Product Codes: 9657133680; 1629054580; 9221V1
• Additional Numbers: 1629054580; 9221V1

Notes For Professionals

Part Numbers Are Frequently Used To Locate The Correct Regulator. Verify The Physical Shape And Mounting Points During Installation To Ensure The Correct Variant Was Supplied. This Mechanism Is Commonly Replaced During Door Repairs, After Water Ingress Events Or When Window Movement Becomes Noisy Or Intermittent.