Description
Interior temperature sensor for Citroën C5, C6 Peugeot 407, 607 and other Citroën or Peugeot models
This cabin temperature and humidity sensor (fits part numbers 9647527180 / 6445VC) is designed to provide accurate ambient readings for climate control systems in a range of Citroën and Peugeot vehicles. Ideal for professional workshops and experienced DIYers, the unit helps restore reliable automatic heating, ventilation and air conditioning (HVAC) regulation by feeding the HVAC module with correct temperature and humidity data. Commonly searched by OE codes (9647527180, 6445VC, 9646573380), this sensor is a direct-fit option for many Stellantis platform vehicles and speeds up diagnosis and repair of climate issues.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II, Citroën C6, Peugeot 407, Peugeot 607 (and other compatible Citroën/Peugeot models)
- Product Codes: 9647527180, 6445VC
- Other Numbers: 9646573380
- Function: Cabin temperature and humidity sensing for automatic HVAC regulation
- Location: Typically mounted in the dashboard or centre console area where it measures cabin air conditions; exact position depends on model and year
Installation Recommendation
Follow these practical steps to replace the cabin temperature/humidity sensor. Intended for trained technicians or competent DIYers with basic tools:
- Disconnect Battery: Always disconnect the negative battery terminal before starting to avoid short circuits and protect vehicle electronics.
- Access Sensor: Remove the required trim panels (glovebox, center console or dash cover depending on model) to reach the sensor housing. Keep fasteners organized.
- Unplug Connector: Carefully release the electrical connector and any retaining clips. Inspect connector pins for corrosion or damage.
- Remove Sensor: Extract the sensor from its mounting slot or housing without forcing surrounding plastic parts.
- Install New Sensor: Fit the new unit in the correct orientation, secure clips, and reconnect the electrical plug. Ensure a snug, corrosion-free connection.
- Reassemble And Test: Refit trim panels, reconnect the battery, start the vehicle and verify HVAC operation. Check that automatic climate modes react to temperature/humidity changes.
- Caution: Avoid contact with moisture or oils on the sensor element. Do not pull on wiring harness; use proper tools for clips and fasteners.
Reason Why Part Most Commonly Fails
- Moisture Ingress: Long-term exposure to condensation or humidity can degrade the sensor element or electronics.
- Connector Corrosion: Corroded pins and poor electrical contact cause intermittent readings or complete failure.
- Contamination And Dust: Dust buildup and contaminants can insulate the sensing element and reduce accuracy.
- Thermal Cycling And Ageing: Repeated heating/cooling cycles and time can cause drift or failure of the sensing components.
- Physical Damage: Impact during repairs or rough handling when removing trim can break the sensor or its mount.
Tips For Diagnosis
- Verify Wiring And Connector Condition Before Replacing The Sensor.
- Use A Multimeter Or Diagnostic Tool To Check Sensor Signal And Resistance Where Applicable.
- If Replacing The Sensor Does Not Resolve The Issue, Inspect The HVAC Control Unit And Ducting For Faults Or Blockages.
Keywords: Interior Temperature Sensor, Cabin Humidity Sensor, Citroën Temperature Sensor, Peugeot Temperature Sensor, 9647527180, 6445VC, 9646573380, HVAC Sensor.
