• 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) 2022-2026 Service Manual: Ignition Switch Assembly. Ignition Switch
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 immobiliz ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Brake Booster
- Components
1. Reservoir cap2. Reservoir3. Brake booster4. Master cylinder5. Push rod
- Brake Booster Operating Test
1.Run the engine for one or two minutes, and then stop it. If the
pedal depresses fully the first time but gradually becomes higher when
depressed succeeding times, ...