Hyundai Elantra (CN7): Charging System / Battery Sensor

Hyundai Elantra (CN7) 2021-2025 Service 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).

Battery (-)terminal installation :

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).

Battery sensor cable installation bolt :

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 Description1.The CMF (Closed Maintenance Free) battery is, as the name implies, totally maintenance free and has no removable battery cell caps.

Starting System❯

Other information:

Hyundai Elantra (CN7) 2021-2025 Service Manual: Head Lamp Leveling Switch

Schematic diagrams Schematic Diagrams Repair procedures Replacement1.Disconnect the negative (-) battery terminal.2.Remove the crash pad lower panel (A).(Refer to Body - "Crash Pad Lower Panel")3.Loosen the mounting screw and remove the crash pad lower switch (A).

Hyundai Elantra (CN7) 2021-2025 Service Manual: Repair procedures