Technical Information:
Manufacturer: Denso
Model: Citroën C4 Picasso
Product Codes: 6441CG, 6441CE
Additional Numbers: Integrated Regulator

A properly functioning heater fan is essential for sustaining a comfortable environment, especially during colder seasons. This unit from Denso offers durable construction and superior performance by delivering consistent airflow, helping your vehicle’s interior stay warm and pleasant whenever needed. Installation is straightforward, making it compatible with multiple Citroën models, predominantly the C4 Picasso, simplifying replacement or repairs.

Quality and reliability are paramount when selecting car parts. This heater fan includes an integrated regulator, allowing for easy and accurate temperature control, enhancing your vehicle’s climate management system. Suitable for both professional mechanics and car enthusiasts performing self-maintenance, this part provides an excellent balance of efficiency and durability, ensuring dependable operation for many kilometers to come.

Whether you are servicing a Citroën or Peugeot, investing in a high-quality heater fan from Denso will guarantee your vehicle’s heating system performs optimally, promoting driver and passenger comfort in any weather.

Product Overview

High-quality heater blower motor with integrated regulator specifically designed for Citroën C4 Picasso first generation. Ideal replacement for worn or noisy blower motors and for faults where the fan operates only on certain speeds or fails completely. Frequently searched by OEM references 9654652480, 5E2228000, 6441W8 and 6441W9.

Key Functions

The blower motor circulates air through the vehicle HVAC system, delivering heating, ventilation and defogging performance to the cabin. The integrated regulator controls fan speeds across multiple settings to ensure consistent airflow and driver comfort.

Compatibility

Primary Fitment: Citroën C4 Picasso First Series (first generation). Confirm fitment by comparing product codes: 5E2228000, 9654652480, 6441W8, 6441W9.

When And Why It Fails

Typical failure modes include worn carbon brushes, seized or noisy bearings, regulator/resistor malfunction and electrical connector corrosion. Symptoms are reduced or no airflow, fan working on limited speeds only, grinding or rattling noises and intermittent operation. Moisture ingress and debris in the blower housing accelerate wear and can lead to premature failure.

Replacement Interval

There Is No Fixed Service Interval. Longevity Depends On Use And Environment. Replace The Unit When Noise Increases, Airflow Drops Or Speed Control Is Lost.

Installation Guide

• Disconnect The Negative Battery Terminal Before Starting Work On Electrical Components.
• Access The Blower Motor From The Passenger Footwell Or Under The Glovebox; Remove Required Trim Panels.
• Disconnect The Electrical Connector And Remove The Mounting Screws Or Clips Holding The Blower Assembly.
• Withdraw The Old Unit Carefully, Install The Replacement In The Correct Orientation And Refit Fasteners.
• Reconnect The Electrical Connector And Restore Battery Power. Verify All Fan Speeds And HVAC Functions Before Reassembling Trim.
• Inspect Seals And Ducting For Debris; Clear Any Foreign Objects That Could Cause Future Damage.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C4 Picasso First Series
• Product Codes: 5E2228000, 9654652480, 6441W8, 6441W9
• Additional Numbers: INF

Recommendations For Installation

Use The Correct Fasteners And Avoid Overtightening Plastic Threads. Check Connector Pins For Corrosion And Replace Damaged Clips Or Seals. If The Previous Unit Failed Due To Bearing Wear, Inspect The HVAC Ducting For Foreign Objects. After Installation, Test The Blower Across All Speeds To Confirm Regulator Functionality.

Most Common Cause Of Failure

Worn Brushes And Bearings Causing Noise Or Reduced Performance; Regulator/Resistor Failure From Overheating; And Contamination Or Moisture Ingress Causing Electrical Faults Or Mechanical Seizure.

Description

High-quality replacement heater blower fan designed for the right rear position in Citroën C4 Picasso and Grand Picasso (first generation). This blower motor restores proper airflow in the HVAC system, ensuring effective cabin heating, demisting and ventilation. Commonly referenced under product codes 9650872480 and 6441X5, the unit is suitable for professional workshops and DIY mechanics who need a direct-fit electric blower for climate control repairs.

Key Benefits

• Direct-fit replacement for original equipment positions — Right Rear.
• Restores cabin airflow and heating performance.
• Compatible with standard blower speed control systems; speed regulator sold separately.
• Useful spare for service bays and mobile technicians working on Citroën/Peugeot Stellantis vehicles.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C4 Picasso, Grand Picasso (First Generation)
• Product Codes: 9650872480, 6441X5
• Additional Numbers: None listed

Installation Recommendations

Follow these general steps as a guideline. Always consult the vehicle manufacturer’s repair manual for exact procedures and torque settings.

• Disconnect the negative battery terminal before starting work to avoid short circuits and protect electronic modules.
• Gain access to the blower unit — typically located behind the glove box or under the right-hand side of the dashboard. Remove trim panels or the glove box as required.
• Unplug the electrical connector and any harness clips. If the blower uses a separate speed regulator or resistor, note its location and condition; the regulator may be replaced separately.
• Unscrew the mounting fasteners securing the blower housing and remove the old unit. Compare connectors and mounting points to ensure correct fitment.
• Install the new blower, secure fasteners, reconnect the electrical connector and reassemble trim. Reconnect the battery and test all blower speeds and HVAC functions before finishing.
• If blower speeds do not operate correctly after installation, check the blower resistor/speed regulator, fuses, and wiring for continuity.

Why This Part Fails

• Mechanical Wear: Bearings and motor brushes degrade over time, causing noise, reduced airflow or complete failure.
• Debris Ingress: Leaves, dust and other debris drawn into the HVAC intake can jam the fan or damage the wheel.
• Moisture And Corrosion: Water ingress from blocked drains or leaks can corrode electrical connections or the motor housing.
• Electrical Faults: Failed capacitors, worn commutator segments or connector problems can interrupt power to the motor.

Practical Tips

• Check and clear HVAC drains and cabin intake areas to reduce debris and moisture reaching the blower.
• When replacing a noisy or failing blower, inspect the resistor/speed regulator and fuses; these are common secondary failure points.
• Keep replacement product codes (9650872480, 6441X5) at hand when ordering to speed up parts lookup.

Suitable For

Technicians and DIY enthusiasts working on Citroën C4 Picasso and Grand Picasso first generation vehicles who require a right-rear heater blower fan replacement. Ideal for restoring full HVAC performance when the original blower shows noise, reduced airflow or intermittent operation.

Product Overview

This left rear heater blower is a direct-fit electric fan assembly designed for the first generation Citroën C4 Picasso and Grand C4 Picasso. It provides cabin airflow for the rear-left venting circuit and is frequently replaced as a maintenance or repair item in vehicles with reduced or noisy climate control performance. The fan motor is supplied as the complete blower unit; the speed regulator (resistor/module) is available separately.

Function And Application

The blower motor forces air through the heating and ventilation ducts to the rear-left passenger area. Proper blower operation is critical for interior comfort, window demisting and even distribution of heated or cooled air. Typical applications are Citroën C4 Picasso I and Grand C4 Picasso I where the left rear blower serves the second-row ventilation circuit.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C4 Picasso I, Grand C4 Picasso I
• Product Codes: 9688094980, 6441X4
• Other Numbers: 9650872580

Typical Symptoms Indicating Replacement

• No Airflow Or Very Low Airflow From Rear-Left Vents
• Intermittent Operation Or Fan Only Works On One Speed
• Unusual Noise Such As Grinding, Rattling Or Squealing From Rear Console Area
• Burning Smell Or Excessive Current Draw (Possible Motor Overload)

Replacement Procedure (General Guidance)

Designed For Mechanics And Experienced DIYers. Steps Below Give A Practical Overview — Follow Manufacturer Repair Manual For Vehicle-Specific Details:

• Disconnect The Battery Before Starting To Prevent Short Circuits And Protect Vehicle Electronics.
• Remove Interior Trim Panels Or Rear Console Covers To Access The Rear-Left Blower Housing.
• Unplug The Electrical Connector And Note Connector Orientation.
• Unscrew The Mounting Fasteners Securing The Blower Assembly And Withdraw The Unit From Its Housing.
• Fit The New Blower In Reverse Order, Ensure Gaskets/Seals Are Correctly Seated, Reconnect Electrical Connector And Reinstall Trim.
• Restore Battery Power And Verify Operation At All Fan Speeds. If The Fan Works Only On Some Speeds, Inspect/Replace The Speed Regulator Module.

Installation Recommendations

• Always Disconnect The Battery Before Removal Or Installation To Protect The Vehicle Electronic Systems.
• Inspect Wiring And Connectors For Corrosion Or Heat Damage; Replace Any Compromised Parts.
• Check The Air Inlet For Debris Or Foreign Objects That Could Reproduce Noise Or Damage The New Unit.
• Replace The Speed Regulator If The Old Unit Exhibited Intermittent Speed Control Or Electrical Faults.
• When Reassembling, Ensure All Clips And Fasteners Are Secure To Avoid Rattles And Air Leaks.

Most Common Failure Causes

• Worn Motor Brushes Or Bearings Leading To Noise Or Motor Seizure.
• Ingress Of Dirt, Leaves Or Small Objects Into The Fan Housing Causing Imbalance And Premature Wear.
• Moisture Or Corrosion Affecting Electrical Connections Or The Motor Windings.
• Faulty Speed Regulator/Resistor Causing Loss Of Speed Control Or Intermittent Operation.
• Overheating From Excess Current Draw When Airflow Is Restricted.

Why Choose This Part

Direct-fit part numbers referenced in the technical information make this blower easy to find by code during ordering. The unit restores proper rear-left ventilation and eliminates noise and performance issues caused by a failing blower motor. Ideal For Workshops And DIY Enthusiasts Looking For A Straightforward Replacement Solution.

Compatibility Notes

Fits First Generation Citroën C4 Picasso And Grand C4 Picasso Models. Verify The Part Numbers Listed In The Technical Information Match Your Vehicle Build When Selecting Parts.

Reliable electronic regulator designed for the heater blower of Citroën C4 Picasso and Grand C4 Picasso first generation models. This unit restores full speed control of the cabin fan and eliminates common symptoms such as limited fan speeds, intermittent operation or complete loss of blower function. Ideal for professional workshops and DIY mechanics looking for a direct-fit solution with clear product references A43000700 / 6441X3.

Key Benefits

• Direct fit for Citroën C4 Picasso and Grand C4 Picasso (first generation).
• Restores All Fan Speeds And Smooth HVAC Operation.
• Easy Replacement Procedure Suitable For Experienced DIYers And Professional Technicians.
• Commonly Searched By Part Numbers A43000700 And 6441X3 For Fast Identification.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C4 Picasso, Grand C4 Picasso (First Generation)
• Product Codes: A43000700
• Other Numbers: 6441X3

Compatibility And Fitment

Designed For First Generation Citroën C4 Picasso And Grand C4 Picasso. Frequently Located And Identified By The References A43000700 And 6441X3. Check The Unit Shape And Connector Type Against The Old Part Before Installation To Confirm Fitment.

Function And Common Symptoms

The Regulator Controls The Voltage Supplied To The Blower Motor, Allowing Multiple Fan Speeds And Stable Operation Of The Heating And Air Conditioning System. Typical Symptoms Of A Faulty Regulator Include Loss Of Some Or All Fan Speeds, Intermittent Blower Operation, And In Some Cases A Burning Smell Or Visible Damage To The Connector Area.

Typical Causes Of Failure

Failures Are Most Often Caused By Heat Stress, Corrosion From Moisture Ingress, Worn Internal Components Due To Age, Or Voltage Spikes. Excessive Current Draw From A Failing Blower Motor Can Also Overload The Regulator And Lead To Premature Failure.

Replacement Procedure

1. Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Electronic Components.
2. Access The Blower Motor Housing Typically From The Passenger Footwell Or Behind The Glovebox Depending On Model Specification.
3. Remove Any Trim Or Covers To Reach The Regulator Module. Note Fixing Screws And Retain Them For Reassembly.
4. Unplug The Electrical Connector And Release The Regulator From Its Mounting.
5. Install The Replacement Unit, Secure Fastenings, Reconnect The Connector And Refit Trim Panels.
6. Reconnect The Battery And Test All Fan Speeds And HVAC Functions Immediately After Installation.

Installation Recommendations

• Always Disconnect The Battery Before Removal And Installation To Prevent Damage To The Unit.
• Inspect The Blower Motor And Fuse When Replacing The Regulator; A Faulty Motor Or Blown Fuse May Cause Immediate Stress On The New Unit.
• Clean And Dry The Connector Area Before Reassembly To Reduce Risk Of Corrosion.
• After Installation, Verify Fan Operation Across All Speeds And Check For Unusual Noises Or Excessive Current Draw.
• If You Are Unsure About Access Or Electrical Diagnostics, Seek Assistance From A Qualified Technician.

Why This Part Is Worth Replacing

Replacing A Faulty Heater Fan Regulator Restores Climate Control Functionality, Improves Comfort And Safety During Driving, And Prevents Further Damage To The Blower Motor And Electrical System. Using The Correct Referenced Unit (A43000700 / 6441X3) Ensures Proper Fit And Reliable Operation.

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.

This right-rear heater blower is a direct-fit replacement designed for the first-generation Citroën C4 Picasso and Grand C4 Picasso. Ideal for professional workshops and experienced DIYers, the unit restores proper airflow to the rear cabin and improves passenger comfort. Common search queries include OEM codes 9688094880, 9650872480 and 6441X5 — include these numbers when searching to find the correct part quickly. The fan is suitable where the rear blower motor has failed, runs noisily, or provides reduced airflow. The Fan Speed Regulator Is Available Separately.

Technical Information

• Manufacturer: Citroën (Stellantis)
• Model: Citroën C4 Picasso (1st Generation), Citroën Grand C4 Picasso (1st Generation)
• Product Codes: 9688094880, 6441X5
• Other Numbers: 9650872480
• Position: Right Rear (Passenger Compartment Blower)
• Function: Provides forced air circulation for heating and ventilation to the rear cabin; works together with the HVAC unit and heater core.

Installation Recommendations

• Disconnect the battery before starting work to avoid short circuits and to protect vehicle electronics.
• Access the blower by removing the necessary trim panels in the rear passenger area or behind the glovebox depending on vehicle layout; keep fasteners and clips organized.
• Unplug the electrical connector and remove the retaining screws or clips holding the blower housing.
• Replace the blower unit and reconnect the electrical plug. If the fan speed is controlled by a separate regulator, install or test the regulator as well.
• Reassemble trim panels and reconnect the battery. Test all blower speeds and listen for abnormal noise or vibration before finalizing installation.
• Use basic hand tools; in confined spaces a small ratchet and trim tools speed up the job. For full safety follow manufacturer repair procedures.

Why This Part Fails

• Wear Of Internal Brushes Or Bearings — The most common reason for blower motor failure is mechanical wear causing noise, reduced speed, or seized rotor.
• Debris And Foreign Objects — Leaves or small debris drawn into the intake can damage the fan blades or obstruct rotation.
• Water Ingress Or Corrosion — Moisture reaching the motor can cause corrosion and electrical faults.
• Overheating From Blocked Cabin Filter — A clogged cabin filter increases motor load and can shorten service life.
• Faulty Speed Regulator — Intermittent operation or loss of some fan speeds can result from a failing regulator; this component is often replaced separately.

Maintenance And Service Tips

• Check And Replace Cabin Filter Regularly To Reduce Contaminants Entering The Blower.
• Inspect For Debris And Clean The Blower Intake During Routine Service.
• If The Motor Is Noisy Or Intermittent, Inspect Brushes/Bearings And The Speed Regulator Before Replacing Other HVAC Components.
• When Replacing This Unit, Compare Mounting Points And Electrical Connector To Ensure Direct Fit.

Restore reliable rear-cabin airflow with this OEM-fit heater blower for Citroën C4 Picasso and Grand C4 Picasso (1st Gen). Order now using reference numbers 9688094880, 9650872480 or 6441X5 to ensure fast identification and correct fitment.