ESC Control Unit: Removal

Turn ignition switch OFF and disconnect the negative (-) battery cable
Remove the Engine room junction box after removing the cover.

Fig 1: Identifying Engine Room Junction Box Cover
Courtesy of HYUNDAI MOTOR CO.
Disconnect the brake tubes from the HECU by unlocking the nuts counterclockwise with a spanner.

Fig 2: Identifying Brake Tubes And Unlocking Nuts
Courtesy of HYUNDAI MOTOR CO.
Pull up the lock (A) of the ESC control unit connector, then disconnect the connector.

Fig 3: Identifying Lock Of ESC Control Unit Connector
Courtesy of HYUNDAI MOTOR CO.
Loosen the 3 ESC HECU bracket bolts, then remove HECU and bracket.
Tightening torque:

16.7 ~ 25.5 Nm (1.7 ~2.6 kgf.m, 112.3 ~18.8 lb-ft)

Fig 4: Identifying ESC HECU Bracket Bolts
Courtesy of HYUNDAI MOTOR CO.
Remove the 3 bolts, then remove the bracket from HECU.
Tightening torque:

7.8 ~9.8 Nm (0.8 ~1.0 kgf.m, 5.8 ~7.2 lb-ft)
CAUTION:
1. Never attempt to disassemble the HECU.
2. The HECU must be transported and stored in.
3. Never shock to the HECU.