Repair procedures: Removal

Disconnect the battery (-) terminal.
Disconnect the brake tubes from the HECU.
Tightening torque:

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

Nut (B):

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

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

Fig 1: Identifying Brake Tube Nuts
Courtesy of HYUNDAI MOTOR CO.
Disconnect the HECU connector.
Remove the HECU by loosening the bracket mounting bolts.
Tightening torque Nm (kgf.m, lb-ft):

16.7 ~ 25.5 N.m (1.7 ~ 2.6 kgf.m, 12.3 ~ 18.8 lb-ft)
CAUTION:
- Never attempt to disassemble the HECU.
- The HECU must be protected during storage and transport, and must not be subjected to excessive shock.