Description
Left front wiper motor for Citroën C4 Picasso and C4 Grand Picasso. Driver’s side. Up to 2013.
Direct replacement left front (driver side) wiper motor designed for Citroën C4 Picasso and C4 Grand Picasso models produced up to 2013. This unit is commonly searched by OE numbers and aftermarket codes, so technicians and DIY enthusiasts often locate it by part number 9687621780 or reference codes 6405NH / 6405KT / 6405PH. Intended for use in the front wiper mechanism, the motor drives the linkage that controls wipe strokes and park position of the driver-side wiper arm.
Key Benefits
- Direct fit for Citroën C4 Picasso / C4 Grand Picasso (pre-2013) — simplifies replacement in workshops and home garages.
- Compatible with common OE and catalog search numbers (9687621780, 6405NH, 6405KT, 6405PH) — useful for quick parts lookup.
- Restores proper wiper function: smooth wiping, correct park position and reliable intermittent operation when combined with vehicle electronics.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C4 Picasso, Citroën C4 Grand Picasso (Left Front, Up To 2013)
- Product Codes: 9687621780, 6405NH
- Other Numbers: 6405KT, 6405PH
Compatibility And Fitment
Fits Citroën C4 Picasso and C4 Grand Picasso models produced up to 2013 for the left front (driver) wiper. When searching, use the OE number 9687621780 or alternative codes 6405NH / 6405KT / 6405PH to find matching units and cross-references.
Replacement And Installation Recommendations
- Safety First: Disconnect the vehicle battery before starting work to prevent short circuits and unintended wiper movement.
- Removal Steps (overview): Remove wiper arms, detach the cowl or wiper cover, disconnect the electrical connector, unbolt the wiper motor/linkage assembly, and separate the motor from the linkage if necessary.
- Installation Steps (overview): Mount the motor, reconnect the linkage and electrical connector, reassemble the cowl and wiper arms. Ensure the wiper motor and linkage are set to the correct park position before final tightening.
- Adjustment Tip: Verify correct park position and smooth travel through a full wipe cycle. If park position is off, recheck linkage alignment and motor indexing before final assembly.
- Workshop Advice: Use appropriate tools and replacement fasteners if original bolts or clips are corroded. Inspect linkage joints and bushings and replace if excessively worn.
Why This Part Commonly Fails
- Water Ingress And Corrosion: Moisture can enter the motor or connector leading to electrical faults and corrosion of terminals.
- Mechanical Wear: Brushes, commutator, or internal gears can wear over time, especially in older, frequently used vehicles.
- Frozen Or Jammed Wipers: Operating the wipers on a frozen windshield or with heavy ice increases load and can damage motor gears or linkage.
- Connector Or Wiring Issues: Corroded or loose electrical connections cause intermittent operation or complete failure.
Practical Tips For Mechanics And DIYers
- When replacing the motor, always check the condition of the entire wiper linkage and bushes — a new motor on a worn linkage may fail prematurely.
- Search by OE numbers (9687621780, 6405NH) for the fastest match. Keep original part number handy when ordering.
- After installation, run several full wipe cycles and test all wipe speeds and park function to confirm correct operation.
Warranty And Quality Notes
Part condition and origin may vary by supplier. Inspect the unit and connectors at installation and ensure proper protection against moisture and contaminants to maximize service life.
