Hyundai Sonata: AVN System / AVN Remote Controller (Sonata Sports) Repair procedures

Inspection

Check for resistance between terminals in each switch position (LH).

[LH : Audio + Hands free]

Check for resistance between terminals in each switch position (RH).

[RH : Audio + Hands free]

Switch	Connector Terminal	Resistance (±5%)
Cancel	4-5	330 ?
SET (-)		550 ?
RES (+)		880 ?
Cruise ON/OFF		1.44 k?
SCC (Following distance control)		5.54 k?
Group	2-4	560 ?
Trip Up		890 ?
Trip Down		1.45 k?
ENTER		2.55 k?

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the steering wheel assembly. (Refer to Steering System - "Steering Wheel")

3.	Remove the screw from the steering cover.

4.	Remove the steering back cover (A).

5.	Remove the steering remote control connector (A).

6.	Remove the steering remote control (A) after loosening the screws.

Installation

1.	Install the steering wheel remote control after connecting the connector.

2.	Connect the negative (-) battery terminal.

Circuit Diagram ...

Components ...

Hyundai Sonata LF 2014-2019 Service Manual: AVN(Audio Video Navigation) head unit Components and Components Location
Components Connector Pin Information NoConnector AConnector BConnector C1-Multmedia-CAN (High)Chassis-CAN (Low)2--Chassis-CAN (High)3---4-Steering wheel remote controller-5SPDIF Shield GND--6SPDIF (+)MTS keypad signal-7---8Illumination (+)AUX R input-9-Multimedia jack (GND)- 10-MIC (+)-11-Batt ...