Hyundai Elantra: Engine Electrical System

Muffler Repair procedures
Removal and Installation Front Muffler 1. Disconnect the battery negative terminal. 2. Disconnect the oxygen sensor connector (A). 3. Detach the rubber hanger (A) from the front muffler. ...

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Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Smart Key Unit Repair procedures
Removal Smart Key Unit 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box. (Refer to Body - "Glove Box Upper Cover Assembly") 3. Remove the smart key unit (A) after disconnecting the connectors (B) and loosening the bolt and nut. Interior 1 Antenna   ...

Hyundai Elantra AD (2016-2020) Owners Manual: Curtain air bags
Curtain air bags are located along both sides of the roof rails above the front and rear doors. They are designed to help protect the heads of the front seat occupants and the rear outboard seat occupants in certain side impact collisions. The curtain air bags are designed to deploy during ...

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