2021 Hyundai Elantra
Battery / Charging System on 2021 Hyundai Elantra
Electrical
Get Serviced Soon
The charging system is not functioning properly. The battery is not being charged by the alternator.
Quick answer for your 2021 Hyundai Elantra
You can drive short distances, but get the vehicle serviced soon to avoid further damage.
Dashboard layouts vary by model year. This guide applies to your 2021 Hyundai Elantra — the meaning and urgency are the same across vehicles.
Common causes
- Failing alternator
- Corroded or loose battery terminals
- Old or weak battery
- Broken serpentine belt
- Faulty voltage regulator
Common symptoms
- If light on and headlights dim at idle …Likely cause: Weak alternator or loose belt
- If light on and car won’t start or clicks …Likely cause: Dead or weak battery
- If light on after jump-start, then goes off …Likely cause: Battery was low; have charging system checked
What to tell your mechanic
“The battery/charging light is on. Can you test the battery and alternator output and check the belt and connections?”
What to do
Turn off unnecessary electrical accessories. Drive to a mechanic or auto parts store for a battery and alternator test.
Estimated repair cost
$150–$800
Exact cost depends on the cause and labor rates in your area.