KIA Niro: Battery Sensor Repair procedures

Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Engine Electrical System / Battery Voltage and Status / Battery Sensor Repair procedures

Removal

  1. Open the trunk.
  2. Remove the luggage side trim (RH) side cover (A).

  1. Turn the ignition switch OFF and disconnect the battery negative (-) terminal (A).
  2. Disconnect the battery sensor connector (B).

Battery (-) terminal tightening nut : 7.8 - 9.8 N*m (0.8 - 1.0 kgf*m, 5.2 - 8.7 lb*ft)

  1. Remove the luggage side trim (RH).

    (Refer to Body - "Luggage Side Trim")

  2. Remove the battery sensor by loosening the mounting bolt (A).

Battery sensor cable flange mounting bolt(Chassis ground) : 10.8 - 13.7 N*m (1.1 - 1.4 kgf*m, 8.0 - 10.1 lb*ft)

Installation

Installation

  1. Install in the reverse order of removal.

Warning

When battery sensor signal fault occurs, inspect the vehicle parasitic draw in advance after inspecting the sensor because the sensor will behave abnormally when the parasitic draw is more than 100mA.

(Refer to vehicle parasitic current inspection)

Warning

After reconnecting the battery negative cable, AMS function does not operates until the system is stabilized, about 4 hours.

If disconnecting the negative (-) battery cable from the battery during repair work for the vehicle
equipped with AMS function, Battery sensor recalibration procedure should be performed after finishing the repair work. (Refer to Battery Sensor Recalibration Procedure)

Warning

For the vehicle equipped with a battery sensor, be careful not to damage the battery sensor when the battery is replaced or recharged.

1) When replacing the battery, it should be same one (type, capacity and brand) that is originally
installed on your vehicle. If a battery of a different type is replaced, the battery sensor may recognize the battery to be abnormal.

2) When installing the ground cable on the negative post of battery, tighten the clamp with specified
torque. An excessive tightening torque can damage the PCB internal circuit and the battery terminal .

3) When recharging the battery, ground the negative terminal of the booster battery to the vehicle body.

Battery Sensor Recalibration

Procedure

After reconnecting the battery negative cable, AMS function does not operates until the system is stabilized, about 4 hours. If disconnecting the negative (-) battery cable from the battery during repair work for the vehicle equipped with AMS function, Battery sensor recalibration procedure should be performed after finishing the repair work.

  1. Turn the Iginition switch ON and OFF.
  2. Park the vehicle for about 4 hours with the hood and all doors closed.

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