SC430 - 2nd Gen (2001-2010)

Drained battery question

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Old 11-05-07, 11:36 AM
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kleef
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Default Drained battery question

Perhaps someone will know the answer to this: I have a 2003, and don't know if the battery has every been replaced (bought used). A few days ago I accidentally left the key in the ignition (turned to the right), and next morning the battery was drained. I had the car jumped, and all was working. Except, when set to "auto," the headlight would not turn off after taking key out of the ignition. I had to finally set the dial to "off" from "auto." Two days later, the battery was dead again.

If a battery gets drained, is that the end of the battery? I read on another thread that once it is drained it is trashed. Also, has anyone experienced the headlights staying on? Perhaps the battery dying reset some setting? Help!
Old 11-05-07, 12:13 PM
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aquanuke
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Guess it depends how good the battery is. Its quite common after being drained its knackered for good.

However the first year I had my SC I drained the battery atleast 6+ times. Either through not using the car for long periods or leaving a light on etc. I found that my battery would not last more then 3 weeks of sitting in the garage.

After my first year I started (or even used the car) atleast once per week and that same battery has been good for nearly 3 years now
Old 11-06-07, 04:19 AM
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dsimo
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Drained my battery at least three times and it's still going strong. Happened because either a door or trunk wasn't completely closed so the headlights stayed on.
Old 11-06-07, 08:42 AM
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kleef
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I learned a good lesson! This is exactly what happened (although I did not do it, so I must have missed that the door-open light must have been on!). In my case, the trunk release button on the remote was hit instead of the "lock the car" button. I turned the headlights off since they obviously stayed on, but didn't notice the door-open light I guess. So I think the trunk light is what drained the battery. Coincidental that it happened the day after I accidentally left the keys in the ignition and drained it that way. But the batter appears fine now after two drainings so we'll see!
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