Some vehicles may also be equipped with a yellow battery warning light. This is less serious and if the yellow battery warning light comes on, it means the battery has a low charge. This is often due to the vehicle being driven for mainly short trips only. Longer drives allow sufficient time for the alternator to charge the battery. If either of those so not resolve the yellow battery warning light problem, then it could be a fault.Ĭommon reasons why the car battery warning light is on include: If long drives really isn’t your thing, then consider leaving your battery on charge overnight. Your car battery is very busy powering the electrical systems in your vehicle. It’s constantly discharging and recharging and has many associated factors that influence the lifespan of your battery.
On average, your car battery will last for about 4 to 5 years before it requires replacing.
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The alternator also called the generator produces electricity to power vehicle electrical components and to charge the battery when the engine is running. As with the battery, there are factors that determine how long an alternator will last. It’s an integral part of a vehicle’s charging system and if your alternator is older than 7 years or your vehicle has exceeded 100,000 miles, it could be the problem if your battery warning light is on. The serpentine belt is a reinforced rubber belt that connects / runs various vehicle components in the engine compartment such as the alternator, air conditioning unit, water pump, power steering pump and the cooling fan (if it’s not electric). If the belt becomes excessively worn or breaks, all of those components including the alternator which charges the battery will cease to operate. Older serpentine belts last for around 50,000 miles whilst newer improved compound serpentine belts last for around 100,000 miles. Over time, the battery terminals may produce corrosion. The build up is easy to see and this corrosion can eventually restrict contact between the battery and the terminals. The terminals require removing and cleaning up with a wire brush.Ĭheck for any blown fuses that relate to the electrical system.
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