LOCK
To turn the ignition switch to the LOCK position, put the key in at the ACC position and turn the key towards the LOCK position. The ignition key can be removed in the LOCK position. (The shift lever must be in the P (Park) position for Intelligent Variable Transmission (IVT)/dual clutch transmission vehicles)
ACC
Electrical accessories are usable. The steering wheel unlocks.
ON
This is the normal key position when the engine has started. All features and accessories are usable. The warning lights can be checked when you turn the ignition switch from ACC to ON.
Do not leave the ignition switch in the ON position when the engine is not running in order to prevent the battery from discharging.
START
To start the engine, turn the ignition switch to the START position. The switch returns to the ON position when you let go of the key.
The engine will crank until you release the key.
Hyundai Elantra AD (2016-2020) Service Manual: Schematic Diagrams
Circuit Diagram
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Hyundai Elantra AD (2016-2020) Owners Manual: Immobilizer System
The immobilizer system protects your vehicle from theft. If an improperly coded
key (or other device) is used, the engine's fuel system is disabled.
When the ignition switch is placed in the ON position, the immobilizer system
indicator should come on briefly, then go off. If the indicator ...