Hyundai Elantra: Charging System / Troubleshooting

Symptom	Suspected Area	Remedy
The charging warning light does not illuminate when the ignition is ON and the engine is OFF.	Blown fuse	Check fuses
	Bulb burnt out	Replace bulb
	Loose wiring connection	Tighten loose connection
	Electronic voltage regulator	Disconnect the voltage regulator to see if the light turns off. If the light goes off, replace the voltage regulator.
The charging warning light does not turn off with the engine running (battery requires frequent recharging).	Drive belt loose or worn	Adjust belt tension or replace belt
	Battery cable loose, corroded or worn	Inspect cable connection, repair or replace cable
	Electronic voltage regulator or alternator	Disconnect the voltage regulator or the AC generator to see if the light turns off. If the light goes off, replace the voltage regulator.
	Wiring	Repair or replace wiring
Overcharging	Electronic voltage regulator	Disconnect the voltage regulator to see if the light turns off. If the light goes off, replace the voltage regulator.
Overcharging	Voltage sensor wire	Repair or replace wiring
Dismiss	Drive belt loose or worn	Adjust belt tension or replace belt
	Wiring connection loose or short circuit	Check wiring connection, repair or replace wiring
	Electronic voltage regulator or alternator	Disconnect the voltage regulator or the AC generator to see if the light turns off. If the light goes off, replace the voltage regulator.
	Poor ground	Inspect ground or repair
	Worn battery	Replace battery

Troubleshooting