• 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: SRS Care
The SRS is virtually maintenance-free
and there are no parts you can safely
service by yourself. If the SRS airbag
warning light does not illuminate when
the ignition switch is in the ON position
or continuously remains on, have the
system immediately inspected by an
authorized HYUNDAI ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Troubleshooting
- Troubleshooting
• The battery must be in good condition and fully charged for this troubleshooting.
Trouble symptomProbable causeRemedy
Engine will not crankBattery charge lowCharge or replace battery
Battery cables loose, corroded or worn outRepair or replace cabl ...