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: Bright-metal maintenance. Underbody maintenance

Bright-metal maintenance To remove road tar and insects, use a tar remover, not a scraper or other sharp object. To protect the surfaces of bright metal parts from corrosion, apply a coating of wax or chrome preservative and rub to a high luster. During winter weather or in coastal areas, cover the bright metal parts with a heavier coating of wax or preservative. If necessary, ..

Hyundai Elantra (CN7) 2021-2025 Service Manual: Passenger Airbag (PAB) Module

Description and operation DescriptionThe passenger airbag (PAB) is installed inside the crash pad and protects the front passenger in the event of a frontal crash. The SRSCM determines if and when to deploy the PAB. • Never attempt to measure the circuit resistance of the airbag module (squib) even if you are using a specified tester. If the circuit re..

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.