Kia Sportage: Charging System / Battery Sensor Description and operation
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 (A) 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.

Specifications
Battery Sensor
Item
Specification
Rated Voltage (V)
12 - 14
Quiescent Current (uA)
...
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-)
terminal.
2.
Disconnect the battery sensor connecto ...
Other information:
Removal
1.
If the compressor is marginally operable, run the engine at idle speed,
and let the air conditioning work for a few minutes, then shut the engine
off.
2.
Disconnect the negative (-) battery terminal.
...
Operating condition
This system will activate when the indicator on the rear parking assist
OFF button is not illuminated. If you desire to deactivate the rear parking
assist system, press the rear parking assist OFF button again. (The indicator
on the button will illuminate.) To turn ...