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.


     Purge Control Solenoid Valve (PCSV)

    Description Purge Control Solenoid Valve (PCSV) is a solenoid valve and is installed on the surge tank and controls the passage between the canister and the intake manifold. The evaporative gases gathered in the canister are delivered to the i

     Variable Force Solenoid (VFS)

    Description CVVT (Continuous Variable Valve Timing) system advances or retards the valve opening and closing timing of the intake or the exhaust valve in accordance with the ECM control, calculated by the engine speed and the load. The CVVT co

     Fuel Pressure Control Valve (FPCV)

    Description Installed on the high pressure fuel pump, the Fuel Pressure Regulator Valve controls the fuel amount flowing into the injectors in accordance with the ECM signal calculated based on various engine conditions. Specification


     If you have a flat tire (equipped with spare tire)

    WARNING Changing a tire can be dangerous. Follow the instructions in this section when changing a tire to reduce the risk of serious injury or death. CAUTION Be careful as you use the jack handle to stay clear of the flat end. The flat end

     Center pillar trim

    Component Location Center pillar lower trim Center pillar upper trim Replacement Center pillar lower trim WARNING When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to