Valeo Interior Temperature Sensor - 509805

This high-quality Valeo interior temperature sensor is a brand new replacement part designed for p...

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eBayValeo 509805 Interior Temperature Sender Unit Sensor Thermo Switch Electrical
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Product Information

Full details

The Valeo Interior Temperature Sensor (MPN: 509805) is an essential replacement component tailored for Citroen and Peugeot owners looking to restore their vehicle's climate control accuracy. This precision-engineered sensor ensures your air conditioning system receives correct environmental data to adjust cabin temperature effectively. While it is a high-quality OEM-standard replacement, users should verify compatibility with their specific vehicle VIN to ensure a perfect fitment.

All features

Model Part Number509805
BrandValeo

Extended Product Information

FAQs

Is this an original equipment part?

Yes, Valeo is a leading automotive supplier, and this sensor is built to the same specifications as the component originally installed in your Citroen or Peugeot.

How do I know if my old sensor is faulty?

Common symptoms include the AC blowing warm air, the fan speed oscillating erratically, or a dashboard diagnostic check revealing a sensor circuit fault code.

Can I install this myself?

If you are comfortable removing automotive trim pieces and working with small electrical connectors, you can perform the installation, though professional service is recommended.

Does this sensor require calibration?

Generally, the climate control module will calibrate the sensor signal upon startup. If issues persist, a dealer-level diagnostic tool may be required to recalibrate the HVAC actuators.

What is the weight of the sensor?

The sensor is extremely lightweight at approximately 0.04 kg.

Troubleshooting

Climate system still reports incorrect temperature after install

Perform a system reset by disconnecting the car battery for 15 minutes or use a diagnostic scanner to clear existing fault codes.

Sensor plug does not fit securely

Check for debris or bent pins in the vehicle's electrical connector; clean with contact cleaner if necessary.

Pros and Cons

Pros

  • High-precision thermal sensing for consistent cooling and heating
  • Lightweight and compact form factor
  • Genuine Valeo quality for long-term reliability
  • Restores factory-level climate control functionality

Cons

  • Requires professional dashboard trim removal for installation
  • Compatibility limited to specific PSA group models
  • Does not include mounting clips or housing hardware

Setup, Compatibility & Care

Installation of the Valeo 509805 typically involves accessing the climate control housing, often located behind the center console or dash fascia.

  1. Compatibility Check: Always confirm your vehicle's compatibility using the manufacturer part number (509805) against your specific model year.
  2. Disconnect Power: Disconnect the negative terminal of your vehicle battery before working on internal electronics to prevent short-circuiting.
  3. Dashboard Access: Carefully remove the trim panels surrounding the sensor location; using plastic pry tools is recommended to avoid scratching the dashboard surface.
  4. Maintenance: To keep the sensor functioning optimally, avoid spraying cleaning chemicals directly into the sensor intake vent, as this can coat the internal thermistor and lead to inaccurate readings.

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