
1. Front - right (FR)
2. Rear - left (RL)
3. Rear - right (RR)
4. Front - left (FL)
5. MC2
6. MC1
7. ESC Control unit (HECU) connector
8. Bracket
1.Disconnect the battery negative ( - ) terminal.
2.Pull up the lock of the ESC control unit (HECU) connector and then disconnect the connector (A).

3.Separate the brake tube by removing the flare nuts (A), (B) connected to the ESC control unit (HECU).
Tightening torque :(A) : 13.7 - 16.7 N·m (1.4 - 1.7 kgf·m, 10.1 - 12.3 lb·ft)(B) : 18.6 - 22.6 N·m (1.9 - 2.3 kgf·m, 13.7 - 16.6 lb·ft)


4.Remove the bracket mounting nuts and remove the ESC control unit (HECU) (A) from the vehicle.
Tightening torque :16.7 - 25.5 N·m (1.7 - 2.6 kgf·m, 12.3 - 18.8 lb·ft)

5.Remove the bolts to remove the bracket (B) from the ESC control unit (HECU) (A).

1.Install in the reverse order of removal.
2.After installation, bleed the brake system. (Refer to Brake System - "Brake Bleeding Procedures")
3.Conduct the Variant Coding.
4.Conduct the Auto Detected Sensor Calibration.
5.Conduct the Longitudinal G Sensor Calibration.
6.After replacing the ESC control unit execute the "Assembly Check (ECU replacement)" of the additional function to check that the mounting is successful.
1.Connect self-diagnosis connector (16pins) located under the driver side crash pad to self-diagnosis device, and then turn the self-diagnosis device after key is ON.
2.Select the "vehicle model" and "ABS/ESC" on diagnostic tool vehicle selection screen, then select OK.





Schematic Diagrams
ESC OFF SwitchHyundai Tucson (NX4) 2022-2026 Owner's Manual: Drive Mode Integrated Control System
Type A
Type B
The drive mode can be selected
according to the driver’s preference or
road condition.
The system resets to NORMAL mode,
when the engine is restarted.
Information
If there is a problem with the instrument
cluster, the drive mode is in NORMAL
mode and may not change ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: TPMS Malfunction
Indicator
The TPMS Malfunction Indicator
illuminates after it blinks for about one
minute when there is a problem with the
Tire Pressure Monitoring System.
Have the system inspected by an
authorized HYUNDAI dealer as soon as
possible.
NOTICE
If there is a malfunction with the TPMS,
the indivi ...