Heater Control Unit
Description and OperationHyundai Tucson (NX4) 2022-2026 Owner's Manual: Conditions that Restart the
Engine
The engine is automatically restarted if:
The brake vacuum pressure is low.
The engine has stopped for about 5
minutes.
The air conditioning is ON with the fan
speed set to a certain high level.
The front defroster is ON.
The battery is weak.
The cooling and heating performance
...
Hyundai Tucson (NX4) 2022-2026 Service Manual: 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 module receives signal from the
sensor and restrains moisture and eliminate defog by controlling ...