Hyundai Kona: Seat Electrical / Lumber Support Units Repair procedures

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

3.	Remove the seat back. (Refer to Body - "Front Seat Back Cover")

4.	Disconnect the lumber support motor connector (A).

5.	Remove the lumber support assembly (C) after disconnect the seat back spring (A) and cable (B).

Installation

1.	Install the lumbar support assembly.

2.	Install the seat back cover.

Install the front seat assembly.

•	Make sure that the connectors are plugged in properly.

•	Check the rear lumbar support system.

Inspection

Lumbar Support Motor

1.	Disconnect the connectors for each motor. [Lumbar Support Motor]

2.	With the battery connected directly to the motor terminals, check if the motors run smoothly.

3.	Reverse the connections and check that the motor turns in reverse.

4.	If there is an abnormality, replace the motors.

Removal [Ventilation Blower] 1. Disconnect the negative (-) battery terminal. 2. Remove the front seat. ...

...

Hyundai Kona (OS) 2018-2026 Service Manual: Engine Coolant Temperature Sensor (ECTS) Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Remove the ECTS. (Refer to "Removal") 3. After immersing the thermistor of the sensor into engine coolant, measure resistance between the EC ...