KIA Niro: Hybrid Motor Cooling System

Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Hybrid Motor System / Hybrid Motor Cooling System

Description

The Hybrid Power Control Unit (HPCU) uses various semiconductors that are supplied with high voltage, hence generating more heat than engine combustion devices. Overheating can decrease the efficiency of control devices, restrict proper operation and melt semiconductors in excessive heat, causing system failure. To prevent this, the hybrid system is equipped with a separate cooling system.

Component location

Component location

HPCU (Hybrid Power Control Unit) (LDC+MCU+HCU+Reservoir)
Hybrid drive motor
Hybrid starter generator (HSG)
Electrical radiator
Electric water pump (EWP)

Radiator Repair procedures

Removal Disconnect the negative (-) cable of the 12V battery. Remove the under cover. (Refer to Engine Mechanical System - "Engine Room Under Cover") Drain the coolant of hybrid motor cooling system. (Refer to Hybrid Motor Cooli

Electric Water Pump (EWP) Repair procedures | Reservoir

Removal Disconnect the negative (-) cable of the 12V battery. Remove the under cover. (Refer to Engine Mechanical System - "Engine Room Under Cover") Drain the coolant of hybrid motor cooling system.

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Fuses

Blade type Cartridge type Multi fuse BFT * Left: Normal, Right: Blown * The actual fuse/relay panel label may differ. Before replacing a blown fuse, disconnect the negative battery cable. If the electrical system does not work,

Safe Exit Warning malfunction and limitations

Safe Exit Warning malfunction A: Check Blind-Spot Safety system When Safe Exit Warning is not working properly, the warning message will appear on the cluster, and the master warning light ( ) will appear on the cluster. Have Safe Exit