• The hydraulic system consists of a valve body, an oil filter and an oil pump.
• The oil pump is powered by the engine. ATF passes through the oil filter and gets distributed along the oil channels.
• The oil becomes highly pressurized as it exits the oil pump and passes through the line pressure valve before being fed to the clutch & brake control valve, clutch, and brakes.
• TCM controls the hydraulic pressure using solenoid valves and controls clutch and brake operations.

Hydraulic System
Electronic Oil Pump (EOP)Hyundai Tucson (NX4) 2022-2025 Service Manual: Description and Operation
- Description
The cruise control system is engaged by the cruise "ON/OFF" main switch
located on right of steering wheel column. The system has the
capability to cruise, coast, accelerate and resume speed.It also has a
safety interrupt, engaged upon depressing brake or shifting select
lev ...
Hyundai Tucson (NX4) 2022-2025 Service Manual: Ignition Switch
- Removal
1.Disconnect the negative (-) battery terminal.
2.Remove the steering column upper and lower shrouds.(Refer to Body - "Steering Column Shroud Panel")
3.Remove the ignition switch (A) after disconnecting the 6P connector (B).
4.Remove the key warning and immobilizer connector (A). ...