Hyundai Elantra: LKAS(Lane Keeping Assist System) / LKAS Unit Repair procedures

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the LDWS unit cover (A).

3.	Disconnect the LKAS unit connector (A).

4.	Remove the LKAS unit after disengaging the mounting bracket (A).

Installation

1.	Align LDWS unit with windshield bracket using forward edge point (A).

Engage snaps and pivot upward to lock point (B).

•	LKAS unit is fully assembled when a single click sound is hear.

3.	Connect the LKAS unit connector.

4.	Connect the negative (-) battery terminal.

Components ...

...

Hyundai Elantra AD (2016-2020) Service Manual: Engine Coolant Temperature Sensor (ECTS) Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the ECTS connector. 3. Remove the ECTS. 4. After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECTS terminals 1 and 3. 5. Check that the resistance is within the specification. ...