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 Cover
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 HECU Brake Tubes (1 Of 2)
Courtesy of HYUNDAI MOTOR AMERICA

Fig 3: Identifying HECU Brake Tubes (2 Of 2)
Courtesy of HYUNDAI MOTOR AMERICA
Pull up the lock (A) of the ESP control unit connector, then disconnect the connector.

Fig 4: Identifying ESP Control Unit Connector Lock (1 Of 2)
Courtesy of HYUNDAI MOTOR AMERICA

Fig 5: Identifying ESP Control Unit Connector Lock (2 Of 2)
Courtesy of HYUNDAI MOTOR AMERICA
Loosen the 3 ESP HECU bracket bolts, then remove HECU and bracket.
Tightening torque:

21.6 ~ 29.4 N.m (2.2 ~ 3.0 kgf.m, 15.9 ~ 21.7 lb-ft)

Fig 6: Identifying ESP HECU Bracket Bolts (1 Of 2)
Courtesy of HYUNDAI MOTOR AMERICA

Fig 7: Identifying ESP HECU Bracket Bolts (2 Of 2)
Courtesy of HYUNDAI MOTOR AMERICA
Remove the 3 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)
NOTE:
1. Never attempt to disassemble the HECU.
2. The HECU must be transported and stored in.
3. Never shock to the HECU.