Hyundai Tucson (NX4) 2022-2025 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Ambient Sensor

Hyundai Tucson: Air Conditioning System / Ambient Sensor

- Description The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.The sensor output will be used for discharge temperature control, temperature regulation door control, blower motor level control, mix mode control and in-car humidity control.

- If the ambient temperature is below 1.0°C (33.8°F), the A/C compressor will stop.- The compressor will operate manually.

- Inspection

1.Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature.Specification

Ambient temperature [°C (°F)]	Resistance between terminals 1 and 2 (kΩ ± 3%)
-10(14)	164.2
0(32)	97.5
10(50)	59.6
20(68)	37.46

1. Ambient Sensor (+)
2. Sensor ground

- Replacement

1.Disconnect the negative (-) battery terminal.

2.Remove the front bumper assembly.(Refer to Body - "Front Bumper Assembly")

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

4.Install in the reverse order of removal.

Photo Sensor

- Description 1.The photo sensor is located at the center of the defrost nozzles. 2.The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar radiation received by its ...

Auto defoging sensor

- Description The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control ...

Other information:

Hyundai Tucson (NX4) 2022-2025 Owner's Manual: System Maintenance
Air Conditioning Performance and Maintenance at Your HYUNDAI Dealer If the amount of refrigerant is too low or too high, the performance of the air conditioning is reduced. Have the system be inspected by an authorized HYUNDAI dealer. NOTICE The refrigerant system should only be ...

Hyundai Tucson (NX4) 2022-2025 Service Manual: General Information
- Lift and Support Points [Two-Post Car Lift] 1.Place the lift blocks under the support points as shown in the illustration. 2.Raise the hoist a few inches (centimeters) and rock the vehicle to be sure it is firmly supported. 3.Raise the hoist to full height to inspect the lift points for se ...