Description
Electric window regulator mechanism for the left front window for Citroën C4 Picasso and Grand. Driver’s side.
High-quality replacement electric window regulator mechanism designed for the left front (driver’s side) of Citroën C4 Picasso and C4 Grand Picasso. This unit restores smooth and reliable operation of the front window, eliminating common issues such as slow movement, noisy operation, or a window that won’t stay in position. Commonly searched under OEM codes 9221CV and 1675403980, this part is suitable for both professional workshops and experienced DIY enthusiasts who perform door repairs and window system maintenance.
Technical Information
- Manufacturer: Stellantis (Citroën)
- Model: Citroën C4 Picasso, Citroën C4 Grand Picasso — Left Front (Driver’s Side)
- Product Codes: 9221CV, 1675403980
- Other Numbers: Commonly referenced by the above OEM codes in parts catalogs and service manuals
Function
The window regulator converts electric motor torque into linear motion to raise and lower the door glass. The mechanism typically consists of a scissor or cable-driven regulator, guide rails, sliders, and an electric motor (depending on version). Proper function ensures the glass moves smoothly, seals correctly, and remains stable at any selected position.
Fitment And Application
Direct fit for left front (driver) door of Citroën C4 Picasso and C4 Grand Picasso models. Check the OEM product codes (9221CV / 1675403980) against vehicle parts lists when matching to specific model years and trim levels to ensure correct fitment.
Replacement Procedure (Overview)
- Remove the interior door trim and any vapor barriers to access the regulator assembly.
- Disconnect the electrical connector to the window motor.
- Support the glass (tape or suction support) and unbolt the regulator from the glass and door frame.
- Remove the old regulator and motor assembly, install the replacement unit, and reattach the glass and fasteners.
- Reconnect the electrical connector and test window operation before reassembling door trim.
Installation Recommendations
- Disconnect the vehicle battery before starting work to prevent short circuits and accidental motor activation.
- Use proper trim tools to avoid damaging door panels and clips. Replace any broken clips or fasteners.
- Inspect and lubricate guide rails and contact points with an appropriate grease to ensure smooth operation.
- After installation, cycle the window several times to verify smooth travel, correct alignment, and absence of binding or unusual noise.
- Torque fasteners to manufacturer specifications and ensure the glass is properly seated in its channels.
Why The Part Most Often Fails
Window regulator mechanisms typically fail due to wear of moving parts (cables, sliders, plastic guides), corrosion from moisture ingress, broken plastic components, or motor burnout after many cycles. Dirt and lack of lubrication increase friction and accelerate wear. Heavy use, frequent stop/start of the window, and water leaks into the door cavity are common contributing factors.
Notes For Buyers
When ordering, reference OEM codes 9221CV and 1675403980 to improve the chance of a correct match. Suitable for professional fitters and competent DIY mechanics comfortable with door disassembly and electrical connections. Proper installation restores factory-like window function and reduces future failure risk when combined with correct lubrication and sealing of door cavities.
