Hyundai Ioniq: High Voltage Battery Control System / Battery Temperature Sensor. Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Hybrid Control System / High Voltage Battery Control System / Battery Temperature Sensor. 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. Failure to follow the safety instructions may result in serious electrical injuries.

1.	Shut off the high voltage. (Refer to Hybrid Control System - "High Voltage Shut-off Procedures")

2.	Remove the high voltage battery pack assembly. (Refer to High Voltage Battery System - "Battery Pack Assembly")

3.	Remove the battery pack assembly rear cover (A) after loosening the mounting nuts.

4.	Remove the battery temperature sensor (A).

Installation

•	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.

1.	Install the battery temperature sensors in the reverse order of removal.

Inspection

•	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.

1.	Shut off the high voltage circuit. (Refer to Hybrid Control System - "High Voltage Shut-off Procedures")

2.	Connect the GDS to the Data Link Connector (DLC).

3.	Turn the ignition switch ON.

4.	Check the battery temperature in GDS service data.

5.	Disconnect the battery temperature signal connector (A).

Measure resistances of the temperature signal terminals (Refer to the table below), then compare the value with the GDS service data.

Item	Terminals
Module 1	BMS ECU B01-T (1), (7)
Module 4	BMS ECU B01-T (2), (8)
Air Inlet	BMS ECU B01-T (4), (10)

Specification : Refer to "Specification"

Battery Temperature Sensor. Schematic diagrams

C..

High Voltage Battery Cooling System

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Detecting pedestrians

The sensor may be limited when: The pedestrian is not fully detected by the camera recognition system, for example, if the pedestrian is leaning over or is not fully walking upright The pedestrian is moving very quickly or appears abruptly in the camera detection area The pedestrian is wearing clothing that easily blends into the background, making it difficult to be detected by the camera recognition system It is difficult to detect and distinguish the pedestrian from other objects in the surroundings, for example, when there is a group of pedestrians or a large crowd There is an item similar to a person’s body structure The pedestrian is small The pedestrian has impaired mobility The sensor recognition is limited The radar sensor or camera is blocked with a foreign object or debris Inclement weather such as heavy rain or snow obscures the field of view of the radar sensor or camera The outside lighting is too bright (e...

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Recommended Lubricants and Capacities

To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality. The correct lubricants also help promote engine efficiency that results in improved fuel economy. *1 : Refer to the recommended SAE viscosity numbers on the next page...