Hyundai Ioniq: High Voltage Battery System / Power Relay Assembly (PRA). Description and operation

Hyundai Ioniq (AE) 2017-2025 Service Manual / Hybrid Control System / High Voltage Battery System / Power Relay Assembly (PRA). Description and operation

Description

The Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU.

[PRA Operation Sequence]

Sub Battery Pack Assembly (Sub-BPA). Repair procedures

Check the target charging voltage when replacing with a new module Fault Code1.Turn OFF the ignition switch.2.Connect the diagnostic tool device to the self-diagnosis connector (DLC)...

Power Relay Assembly (PRA). Repair procedures

Removal • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system...

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Interior Features

Cup Holder ■ Front ■ Rear Cups or small beverages cups may be placed in the cup holders. Rear (if equipped) Pull the armrest down to use the cup holders. WARNING Avoid abrupt starting and braking when the cup holder is in use to prevent spilling your drink...

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Brake Fluid

Checking the Brake Fluid Level Check the fluid level in the reservoir periodically. The fluid level should be between MAX and MIN marks on the side of the reservoir. Before removing the reservoir cap and adding brake fluid, clean the area around the reservoir cap thoroughly to prevent brake fluid contamination...