Hyundai Elantra: Inspection - Battery Sensor. Repair procedures - Charging System - Engine Electrical System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Inspection

1.
Check for DTCs.
If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC guide)
2.
Check if battery sensor status is normal on current data by using GDS.
If its value is ON, replace the battery sensor.
A.
Invalid Conditon of Battery sensor (AMS) = OFF

Battery sensor may operate abnormally if the parasitic current is more than 100mA.
Therefore, if battery sensor signal error occurs, inspect the vehicle parasitic current first before replacing the battery sensor. (Refer to Engine Electrical System - Battery)