Hyundai Elantra: Charging System / Troubleshooting

Hyundai Elantra (CN7) 2021-2025 Service Manual / Engine Electrical System / Charging System / Troubleshooting

Troubleshooting

Symptom	Suspect area	Remedy
Charging warning indicator does not light with ignition switch "ON" and engine off.	Fuse blown	Check fuses
	Light burned out	Replace light
	Wiring connection loose	Tighten loose connection
	Electronic voltage regulator	Disconnect the voltage regulator to see if light turns off. If light turns off, replace voltage regulator.
Charging warning indicator does not go out with 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 alternator to see if light turns off. If light turns off, replace voltage regulator.
	Wiring	Repair or replace wiring
Overcharge	Electronic voltage regulator	Disconnect the voltage regulator to see if light turns off. If light turns off, replace voltage regulator.
Overcharge	Voltage sensing wire	Repair or replace wiring
Discharge	Drive belt loose or worn	Adjust belt tension or replace belt
	Wiring connection loose or short circuit	Inspect wiring connection, repair or replace wiring
	Electronic voltage regulator or alternator	Disconnect the voltage regulator or alternator to see if light turns off. If light turns off, replace voltage regulator.
	Poor grounding	Inspect ground or repair
	Worn battery	Replace battery

Description and operation

DescriptionThe charging system included a battery, an alternator with a built-in regulator, and the charging indicator light and wire.The Alternator has eight built-in diodes, each rectifying AC current to DC current...

Repair procedures

InspectionInspecion Item• Battery efficiency inspection• Battery voltage inspection• Charging voltage insptection• General inspection• Terminal tightening state inspection• Engine/ transaxle ground state inspection• Wiring hareness ground state i..

Other information:

Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Warning messages

Parking brake automatically engaged When the EPB is applied from Auto Hold, a warning will sound and a message will appear. AUTO HOLD turning Off! Press brake pedal When the conversion from Auto Hold to EPB is not working properly a warning will sound and a message will appear. When this message is displayed, the Auto Hold and EPB may not operate. For your safety, depress the brake pedal...

Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Brake fluid

Checking the brake fluid level Check the fluid level in the reservoir periodically. The fluid level should be between MAX and MIN marks on the side of the reservoir. Before removing the reservoir cap and adding brake fluid, clean the area around the reservoir cap thoroughly to prevent brake fluid contamination. If the level is low, add fluid to the MAX level. The level will fall with accum..

Odometer

The odometer indicates the total distance that the vehicle has been driven and should be used to determine when periodic maintenance should be performed.