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Headlight and battery issues in my 2016 Holden Malibu

The original battery in my 2016 Holden Malibu was replaced six months ago. Ever since the battery has gone dead flat over night or very quickly which apparently triggers head lights to come on and the wipers to start. My auto electrician can’t find anything.

Rather than the new battery causing the headlights and wipers to come on, this sounds more like the lights and wipers were already playing up, coming on randomly for no reason, and killing the original battery when your back was turned.

This is a relatively common problem and can usually be traced back to the car’s body computer. If the computer starts to act up, it can switch on various things including lights and wipers, even though the car is locked in the driveway and the key is in your kitchen.

Try an auto electrician who is a bit more familiar with modern body computer set-ups, but in the meantime, there’s a quick trick you can try that might stop the car misbehaving. Disconnect the car’s battery and leave it overnight before reconnecting it. This can sometimes be enough to reset the body computer and the problem will go away. Beware, though, this fix might be temporary and may return some weeks or months later.

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