Hyundai Elantra: Installation - AGM Battery. Repair procedures - ISG (Idle Stop & Go) System - Fuel System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Installation

Install in the reverse order of removal.
When installing the battery, fix the mounting bracket on the tray correctly.
ISG (Idle stop & go) system equipped vehicle always use the AGM battery only. If flooded battery has installed, this can potentially lead to engine electrical trouble or ISG system error.
Replace same capacity of the AGM battery.
Ensure the AGM battery is placed correctly on the battery tray. In all cases, an AGM battery must be installed and the battery sensor calibrated for the ISG system to function. After the battery has been changed or disconnected, the battery sensor must be calibrated. After connecting the battery, start the engine at least once. Then park the car for at least 4 hours with the ignition off. After the 4 hours, the engine should be started two times. At this time the battery sensor will be calibrated.
Do not open the AGM battery.
The AGM battery must not be opened under any circumstances as the introduction of oxygen from the air will cause the battery to lose its chemical equilibrium and rendered non-operational.

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