Hyundai Tucson: Ambient Temperature Sensor (ATS)

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Control - Fuel System / Ambient Temperature Sensor (ATS)


Ambient Temperature Sensor (ATS) is installed on the front-end module and senses the ambient temperature.

This sensor is exposed to the ambient air temperature in front of the radiator.

The ATS is a Negative Temperature Coefficient (NTC)-type sensor and its resistance is in inverse proportion to the temperature.





  1. Turn the ignition switch OFF.
  2. Disconnect the ATS connector.
  3. Measure resistance between the ATS terminals 1 and 2.
  4. Check that the resistance is within the specification.



  1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
  2. Remove the front bumper assembly.

(Refer to Body (Interior nad Exterior) - "Front Bumper Assembly")

  1. Disconnect the connector (A), and then remove the ambient temperature sensor (B).




Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

  1. Install in the reverse order of removal.


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