• 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 Owner's Manual: Electronic Parking Brake (EPB)
Applying the parking brake
To apply EPB (Electronic Parking Brake):
1. Depress and hold the brake pedal.
2. Pull up the EPB switch.
Make sure the Parking Brake warning
light comes on.
EPB (Electronic Parking Brake) may be
automatically applied when:
Requested by other systems.
The ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Starter
- Description
The starting system includes the battery, starter, solenoid switch,
ignition switch, ignition lock switch, connection wires and the battery
cable.When the ignition key is turned to the start position, current
flows and energizes the starter motor's solenoid coil.The solenoid
...