Hyundai Elantra: Charging System / Description and operation

Hyundai Elantra (CN7) 2021-2025 Service Manual / Engine Electrical System / Charging System / Description and operation

Description

The 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.

Therefore, DC current appears at alternator "B" terminal.

In addition, the charging voltage of this alternator is regulated by the battery voltage detection system.

The alternator is regulated by the battery voltage detection system. The main components of the alternator are the rotor, stator, rectifier, capacitor brushes, bearings and V-ribbed belt pulley. The brush holder contains a built-in electronic voltage regulator.

Alternator Management System (AMS)

Alternator management system controls the charging voltage set point in order to improve fuel economy, manage alternator load under various operating conditions, keep the battery charged, and protect the battery from over-charging. ECM controls generating voltage by duty cycle (charging control, discharging control, normal control) based on the battery conditions and vehicle operating conditions.

The system conducts discharging control when accelerating a vehicle. Vehicle reduces an alternator load and consumes an electric power form a battery.

The system conducts charging control when decelerating a vehicle. Vehicle increases an alternator load and charges a battery.

Charging System

Troubleshooting

Troubleshooting Symptom Suspect area Remedy Charging warning indicator does not light with ignition switch "ON" and engine off...

Other information:

Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Low Aspect Ratio Tires

The aspect ratio is lower than 50 on low aspect ratio tires. Because low aspect ratio tires are optimized for handling and braking, their sidewall is a little stiffer than a standard tire. Also low aspect ratio tires tend to be wider and consequently have a greater contact patch with the road surface...

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

Opening the trunk 1. Make sure the shift lever is in P (Park, for automatic transmission/Intelligent variable transmission) or first gear or R (Reverse, for manual transmission) and set the parking brake. 2. Then do one of the following: Hold down the trunk unlock button located on your remote key or smart key for more than 1 second...

Tachometer

The tachometer indicates the approximate number of engine revolutions per minute (RPM).

Use the tachometer to select the correct shift points and to prevent lugging and/ or over-revving the engine.

NOTICE

Do not operate the engine within the tachometer's RED ZONE. This may cause severe engine damage.