Description
Heater blower fan – left rear, for Citroën C4 Picasso and Grand C4 Picasso first generation. Speed regulator can be purchased separately.
Reliable replacement heater blower designed for the left rear HVAC outlet of first‑generation Citroën C4 Picasso and Grand C4 Picasso models. This blower motor matches common OEM references and is frequently searched by part numbers such as 9650872580, 9688094980 and 6441X4, making it easy to find when ordering or quoting repairs. Ideal for professional workshops and independent DIY mechanics who need a direct-fit blower to restore rear cabin ventilation and heating performance.
Function And Benefits
The heater blower motor forces air through the heater core and rear ventilation ducts, providing passenger comfort and ensuring efficient defogging of rear windows and cabin climate control. Replacing a faulty blower restores correct fan speeds, eliminates unusual noises and reduces electrical load caused by a failing motor. This unit offers direct compatibility with the original mounting and electrical connector, ensuring straightforward replacement without major modifications.
Technical Information
- Manufacturer: Citroën / Peugeot (Stellantis)
- Model: Citroën C4 Picasso (First Generation), Citroën Grand C4 Picasso (First Generation) (approx. model years 2006–2013)
- Product Codes: 9650872580, 9688094980, 6441X4
- Other Numbers: OEM Cross References May Include The Listed Codes Above
Installation Recommendations
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And Prevent Damage.
- Access The Unit From The Rear Left Interior Trim Or Luggage Area Depending On Body Version; Remove The Necessary Panels To Reach The Blower Housing.
- Unplug The Electrical Connector And Remove Retaining Screws Or Clips. Swap The Old Motor For The New Unit And Reconnect The Connector Securely.
- Verify Operation Before Reassembling Trim: Check All Fan Speeds And Listen For Abnormal Noises.
- Note: The Speed Regulator (Blower Resistor) Is Sold Separately — Replace It If You Experience Loss Of Some Fan Speeds Or Intermittent Operation.
Most Common Failure Causes
- Worn Brushes Or Bearing Wear: Brush and bearing degradation is the most frequent cause of reduced performance, noise or complete failure after several years of service.
- Contamination And Debris: Leaves, dust and foreign objects in the ducting can load the motor and accelerate wear.
- Water Ingress Or Corrosion: Moisture entering the housing or corroded connectors can cause electrical faults or seize the motor.
- Failing Speed Regulator: A defective blower resistor can mimic motor failure by removing some fan speeds; always check the regulator when diagnosing.
- Electrical Issues: Connector corrosion, intermittent wiring or poor grounding can cause erratic operation.
Why Replace This Part
Replacing the left rear heater blower restores rear passenger comfort and ensures proper HVAC performance. Fast and affordable to replace compared with larger HVAC components, this blower is a common workshop repair and a practical upgrade for vehicles showing reduced airflow, noise or no operation from the rear vents.
Notes For Buyers
This blower is often searched by OEM part numbers (9650872580, 9688094980, 6441X4). Confirm fitment based on model generation and part references. The regulator for speed control is available separately and should be inspected when diagnosing fan speed problems.
