Hyundai Genesis: ESC(Electronic Stability Control) System / ESC Control Unit Repair procedures

Removal

1.	Turn ignition switch OFF and disconnect the negative (-) battery cable.

2.	Remove the Engine room fuse & relay box (B) after removing the cover (A).

3.	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)

4.	Disconnect the ESC control unit connector.

5.	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)

6.	Remove the bolts, then remove the bracket from HECU. 1. Never attempt to disassemble the HECU. 2. The HECU must be transported and stored in. 3. Never give any shock to the HECU.

Installation

1.	Install in the reverse order of removal.

2.	Tighten the HECU mounting bolts and nuts to the specified torque.

3.	After installation, bleed the brake system. (Refer to Brake System - "Brake System Bleeding")

4.	Connect the GDS to the data link connector located underneath the dash panel.

5.	Make a selection and operate the process according to the instructions on the GDS screen. [Auto Detected Configuration Reset] [VARIANT CODING] [ Longitudinal G Sensor Calibration] [SAS CALIBRATION]

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