. Why is my Hyundai Oshan X7 showing a battery warning light even after a recent battery change?

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. Why is my Hyundai Oshan X7 showing a battery warning light even after a recent battery change?

I replaced the battery on my Oshan X7, but the battery warning light occasionally comes on while driving. Could this be a sign of a failing alternator, o r is there another electrical issue?

Gari Specialist asked on 12 Jul 2025 15:13:18 pm

1 Answer

19 views |

Gari Master - on 12 Jul 2025 15:16:36 pm

If the battery warning light stays on after replacing the battery, the issue is likely not the battery, but the charging system, especially the alternator. Common reasons include:

Failing alternator: It may not be supplying enough current to recharge the battery.

Faulty voltage regulator: Causes irregular charging too low o r too high.

Loose o r corroded wiring: Especially common in humid o r coastal Pakistani cities.

Worn alternator belt: If loose o r slipping, the alternator won’t spin properly.

What to do:

Have the alternator output tested should produce ~13.8–14.4V while running.

Check for loose battery terminals and ground cables.

Avoid delaying repair — running on battery power alone will eventually shut down the car.