Repair procedures: 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
Courtesy of HYUNDAI MOTOR AMERICA
Disconnect the brake tubes from the HECU by unlocking the nuts counterclockwise with a spanner.
Tightening torque:

12.7 ~ 16.7 N.m (1.3 ~ 1.7 kgf.m, 9.4 ~ 12.3 lb-ft)

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

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

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

Fig 4: Identifying HECU And Bracket
Courtesy of HYUNDAI MOTOR AMERICA
Remove the bolts, then remove the bracket from HECU.
Tightening torque:

7.8 ~ 9.8 N.m (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.