Kia Optima DL3: Charging System / Battery Sensor

Kia Optima DL3 2019-2025 Service and Repair Manual / Engine Electrical System / Charging System / Battery Sensor

Description and operation

Description

Vehicles have many control units that use more electricity. These units control their own system based on information from diverse sensors. It is important to have a stable power supply as there diverse sensors giving a variety of information. Battery sensor is mounted on battery (-) terminal. It transmits battery voltage, current, temperature information to ECM. ECM controls generating voltage by duty cycle based on these signals.

Repair procedures

Removal

1.	Turn the ignition switch OFF.

Disconnect the battery (-) terminal (A).

Tightening torque :

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

3.	Remove the battery. (Refer to Engine Electrical System - "Battery")

Remove the battery negative (-) cable after removing the bolts (A).

Tightening torque :

10.8 - 13.7 N.m (1.1 - 1.4 kgf.m, 8.0 -10.1 lb-ft)

Installation

1.	Install in the reverse order of removal.

❮Battery

Description and operation Description 1. The CMF(Closed Maintenance Free) battery is, as the name implies, totally maintenance free and has no removable battery cell caps.

Starting System❯

Description and operation Description The starting system includes the battery, starter, solenoid switch, ignition switch, inhibitor switch (A/T), clutch pedal switch (M/T), ignition lock switch, connection wires and the battery cable.

Other information:

Kia Optima DL3 2019-2025 Service and Repair Manual: Integrated Body Control Unit (IBU)

Components and components location Component Location 1. Integrated Body Control Unit (IBU) Schematic diagrams Connector and Terminal Function [Non-Smart key] Pin Function Connector A Connector B

Kia Optima DL3 2019-2025 Service and Repair Manual: Smart Key Antenna