Repair procedures: Removal

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

Fig 1: Engine Room Fuse & Relay Box
Courtesy of HYUNDAI MOTOR AMERICA
Disconnect the brake tubes (A) from the HECU by unlocking the nuts counterclockwise with a wrench.
Tightening torque:

Wheel port: 13.7 ~ 16.7 N.m (1.4 ~ 1.7 kgf.m, 10.1 ~ 12.3 lb-ft)

Master cylinder port: 18.6 ~ 22.6 N.m (1.9 ~ 2.3 kgf.m, 13.7 ~ 16.6 lb-ft)

Fig 2: HECU Brake Tubes
Courtesy of HYUNDAI MOTOR AMERICA
Disconnect the ESC control unit connector.
Loosen the HECU bracket bolts, then remove HECU and bracket.
Tightening torque:

19.6 ~ 29.4 N.m (2.0 ~ 3.0 kgf.m, 14.5 ~ 21.7 lb-ft)

Fig 3: HECU Bracket Bolts
Courtesy of HYUNDAI MOTOR AMERICA
Remove the bolts, then remove the bracket from HECU.

Fig 4: HECU Bracket
Courtesy of HYUNDAI MOTOR AMERICA
NOTE:
1. Never attempt to disassemble the HECU.
2. The HECU must be transported and stored in.
3. Never give any shock to the HECU.