
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) 2022-2025 Service Manual: Components and Components Location
- Component Location
1. Head lamp (Low & High)2. Head lamp (Low)3. Head lamp (High)4. Turn signal lamp5. Daytime running light (DRL) & Positioning lamp6. Side repeater lamp7. Overhead console lamp8. Vanity lamp9. Rear personal lamp10. Luggage lamp11. Head lamp (Static Bending Light)12. ...
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Vehicle Auto-Shut Off
If your vehicle is parked and the engine
is left on for a long period of time, the
engine turns off automatically to help
reduce fuel consumption and prevent
carbon dioxide poisoning.
Operating Conditions
Vehicle Auto-Shut Off timer operates
when all the following conditions are
satisf ...