KIA Niro: High Voltage Battery System / Repair Procedures
Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Hybrid Control System / High Voltage Battery System / High Voltage Battery System / Repair Procedures
Removal
Warning
- Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
- Be sure to read and follow the "High Voltage Shut-off Procedures" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
Main Battery Pack Assembly
- Shut off the high voltage circuit.
(Refer to Hybrid Control System - "High Voltage Shut-off Procedures")
- Remove the rear seat cushion.
(Refer to Body - "Rear Seat Assembly")
- Remove the rear door scuff trim.
(Refer to Body - "Door Scuff Trim")
- Remove the inlet cooling duct.
(Refer to High Voltage Battery Cooling System - "Cooling Duct")
- Open the high voltage battery cushion (A) in the direction of an arrow.

- Remove the upper frame (A) after loosening the mounting bolts and nuts.

- Remove the outlet cooling duct.
(Refer to High Voltage Battery Cooling System - "Cooling Duct")
- Remove the cooling fan #1.
(Refer to High Voltage Battery Cooling System - "Cooling Fan")
- Disconnect the inverter power connector (+) (A), inverter power connector (-} (B), OBC power connector (+) (C), OBC power connector (-) (D), BMS extension connector (E).

- Remove the luggage side trim (RH).
(Refer to Bady - " Luggage Side Trim")
- Disconnect the high voltage cable connector (A) and BMS wiring harness connector (B) connected the sub high voltage battery.

- Remove the high voltage cable (A) after loosening the mounting nuts.

- Remove the main high voltage battery assembly (A) after loosening the mounting bolts.


READ NEXT:
Sub Battery Pack Assembly
Warning
Be sure to read and follow the "General Safety Information and
Caution" before doing any work related with the high
voltage system. Failure to follow the safety instructions may result in
serious electrical injuries.
Be sure to
Battery Pack Assembly Repair procedures
Warning
Be sure to read and follow the "General Safety Information and
Caution" before doing any work related with the high
voltage system. Failure to follow the safety instructions may result in
serious electrical injuries.
Be sure to
High Voltage Battery Module Balancing & Voltage Measurement
After removing the defective module from the HV battery pack make
carefully a visual check and then put back it into the
safety disposal box.
Warning
The cell quantity varies per module number. Check before
conducting procedure.
SEE MORE:
Filter inspection
The climate control air filter should be replaced according to the
maintenance schedule.
If the vehicle is operated in severely air-polluted cities or on dusty rough
roads for a long period, it
should be inspected more frequently and replaced
Refilling And Bleeding
Warning
Never remove the cap when the engine is hot. Serious scalding could
be caused by hot fluid under high pressure escaping
from the reservoir.
Warning
When pouring inverter coolant, be sure to shut the relay box lid to
prevent spilling c
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