Hyundai Elantra: AVN System / External AMP Repair procedures

Removal
1.
Disconnect the negative (-) battery terminal.
2.
Open the trunk, remove the right luggage side trim.
(Refer to Body - "Trunk Trim")
3.
Remove the external amplifier (B) after disconneting the connector (A) and loosening the mounting nuts.

Installation
1.
Install the external amplifier after connecting the connector.
2.
Install the right luggage side trim.
3.
Connect the negative (-) battery terminal.
   
•
Make sure that the cables and connectors are plugged in properly.
•
Check the AVN system.
External AMP Components and Components Location
Components NoConnector ANoConnector B1BATT (+)1Subwoofer 2 (+)2BATT (+)2Subwoofer 1 (+)3BATT (+)3Front door tweeter speaker - RH (+)4BATT (+)4Front door tweeter speaker - LH (+)5-5-6Multimedia CA ...

AVN Remote Controller Components and Components Location
Components 1. Left Remote Control Switch (Audio + Hands free)2. Right Remote Control Switch(Cruise+Trip Computer) ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Water Temperature Control Assembly Components and Components Location
Components 1. Water temperature control assembly2. Engine coolant temperature sensor3. Throttle body coolant hose (if equipped) ...

Hyundai Elantra AD (2016-2020) Service Manual: Heated Oxygen Sensor (HO2S) Description and Operation
Description Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Catalytic Converter. It varies in accordance with the air/fuel ratio. The sensor must be hot in order to operate normally. To keep it hot, the sensor has a heater ...

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