Description
Radiator fan with variable speed control for Citroën C5 II and Peugeot 407
Overview
This high-performance radiator fan assembly provides variable speed control to efficiently manage engine cooling and air conditioning condenser airflow on Citroën C5 II and Peugeot 407 models. Designed for professional workshops and experienced DIY enthusiasts, the unit restores proper cooling performance, helps prevent overheating and supports reliable climate control operation under varying engine loads and ambient conditions.
Applications
- Designed For: Citroën C5 II
- Designed For: Peugeot 407
- Typical Use: Engine Cooling, A/C Condenser Cooling, Cooling System Support
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II, Peugeot 407
- Product Codes: 9656849780, 9653302980, 9656849980
- Additional Numbers: 1253N5
Function And Design Details
The assembly includes the electric fan motor and shroud and features electronic variable speed control to adjust airflow according to engine temperature and air-conditioning demand. Variable speed operation reduces noise and electrical load compared with fixed-speed fans, and allows the cooling system to ramp up gradually or deliver maximum airflow when required.
Replacement Procedure (Summary)
General replacement steps for a competent mechanic or experienced DIYer:
- Disconnect Battery: Always disconnect the negative battery terminal before starting work.
- Access: Remove engine undertray or relevant trim panels to reach the fan assembly. In some vehicles the front bumper or grille removal improves access.
- Electrical: Unplug the fan connector and any sensor or temperature switch connectors attached to the assembly.
- Mechanical: Remove mounting bolts that secure the fan shroud to the radiator and carefully lift the fan assembly from the vehicle.
- Refit: Position the new assembly, tighten mounting bolts to the manufacturer’s torque values, reconnect electrical connectors and restore any removed trim.
- Test: Reconnect the battery and run the engine to verify fan operation at different temperature/A/C settings. Check for abnormal noise or vibration.
Installation Recommendations
- Always Disconnect Battery Before Work: Prevents short circuits and protects vehicle electronics.
- Follow Manufacturer Procedures: Use correct torque values and ensure connector locking tabs engage fully.
- Inspect Related Components: Check radiator, A/C condenser, wiring harness and fuse/relay associated with the fan for damage or corrosion when replacing the fan.
- Secure Mounting: Improperly mounted fans can vibrate, damage the radiator fins or generate noise.
Why This Part Fails (Most Common Causes)
- Motor Wear: Bearings and motor brushes can wear out over time, leading to reduced performance or seizure.
- Moisture And Corrosion: Water ingress and corrosion in connectors or windings can cause electrical faults.
- Electrical Faults: Damaged wiring, failed relays or poor grounding can prevent the fan from receiving proper power or control signals.
- Control Electronics: Problems in the fan speed control module or vehicle cooling controls can result in erratic operation.
- Physical Damage: Impact from debris or accidents can deform the shroud or damage the impeller.
Notes For Buyers
Customers often search for this fan by part number; please refer to the Product Codes and Additional Numbers above when ordering to ensure a correct match. The fan assembly is suitable for professional replacement and for experienced DIYers comfortable working with vehicle electrical and cooling systems.
Warranty And Quality
Specification and compatibility are provided to help you choose the correct replacement. For safe and reliable installation, use proper tools and follow vehicle manufacturer guidelines.
