Repair Procedures: Removal

Turn the ignition switch OFF.
Disconnect the battery sensor connector (A) and battery negative (-) terminal.
Battery Negative (-) Terminal Tightening Nut:

4.0 ~ 6.0 N.m (0.4 ~ 0.6 kgf.m, 3.0 ~ 4.4 lb-ft)

Fig 1: Locating Battery Sensor Connector
Courtesy of HYUNDAI MOTOR AMERICA
Disconnect the battery.
(Refer to Engine Electrical System - "BATTERY ")
Remove the battery sensor & battery negative (-) cable assembly after loosening the sensor cable mounting bolt (A).
Battery Sensor & Battery Negative (-) Cable Assembly Mounting Bolt (Chassis Ground):

21.6 ~ 32.4 N.m (2.2 ~ 3.3 kgf.m, 16.0 ~ 23.9 lb-ft)

Fig 2: Locating Battery Sensor Cable Mounting Bolt
Courtesy of HYUNDAI MOTOR AMERICA