28 Feb 2025 COMPARTELOEN Facebook COMPARTELOEN Twitter

Battery or Alternator Failure? How to Identify the Problem

How to Identify the Problem

The electrical system of your vehicle depends on the battery and the alternator. The battery provides the initial power to start the engine, while the alternator recharges it and powers the electrical systems when the vehicle is running. If the car has electrical issues, it is crucial to identify whether the problem is with the battery or the alternator.

Symptoms of a Defective Battery

- The car doesn't start or only makes a clicking sound.

- There are no lights or sounds when turning the key.

- Dim headlights and dashboard lights.

- Failures in electronic systems such as the radio or central locking.

- Rotten egg smell (gas leakage).

How to Confirm: Try starting the vehicle with an external starter. If it starts, the battery is the culprit and may need replacement.

Symptoms of a Defective Alternator

- The car starts but shuts off shortly after.

- Problems with electrical systems.

- Flickering or variable intensity lights.

- Strange noises under the hood.

- Burning smell.

- Battery warning light on.

How to Confirm: Measure the battery voltage with a multimeter. If it doesn't exceed 13.5V - 14.5V with the engine running, the alternator might be failing.

What to Do?

If the battery is defective, replace it before it stops working. If you suspect the alternator, go to a workshop for a check-up. Acting in time will prevent major breakdowns and ensure the proper functioning of your vehicle.

 

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