SC430 - 2nd Gen (2001-2010)

Battery drained by trunk?

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Old 11-07-21, 10:25 AM
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jimisbell
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Default Battery drained by trunk?

I had my alternator go out yesterday and had plenty of batterry to get home. The mechanic came out to the house and checked it out and is planing on being back on Monday.
But this morning I deccided to put a charger on the battery so I could use it. I needed to move it closer to the charger but, THE BATTERY WAS DEAD. I then got an extension cord and got the charger on it. I noticed that the trunk was popped! Apparently the mechanic pullled the wrong switch looking for the hood latch.
Would the trunk being popped cause the battery to drain even if the lid was not pulled up....Maybe turns on the liight in the trunk....???

Last edited by jimisbell; 11-07-21 at 10:53 AM.
Old 11-07-21, 11:36 AM
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DshngDaryl
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yes, that would do it. It used to be mentioned as a common problem but once people started switching over to Trunk LEDs, it isn't mentioned as much anymore
Old 11-07-21, 11:38 AM
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Harold57
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Yes, I'm pretty sure that the light turns on with just it popped. What I did to improve the vulnerability is to replace all the cabin lights and the trunk lights with LEDs. That action should cut the power drain of the lights down to about 10% of what it is with the OEM incandescent bulbs.
Old 11-07-21, 11:52 AM
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jimisbell
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Thanks, that explains it. I thought the 06 had LEDs, but apparently not everywhere. Gona fix it with a switch!!!!!
Old 11-07-21, 01:57 PM
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Harold57
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Oh, I forgot that you have an '06, I have an '02, which is all incandescent. Definitely worth checking though. If the trunk lights are incandescent, I'd just replace them with LEDs. It's pretty easy and cheap, which is a good combination.
Old 11-07-21, 02:28 PM
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jimisbell
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Originally Posted by Harold57
It's pretty easy and cheap, which is a good combination.
Amen, brother
Old 11-08-21, 03:30 AM
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whlng88
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Default Trunk lights

Originally Posted by Harold57
Yes, I'm pretty sure that the light turns on with just it popped. What I did to improve the vulnerability is to replace all the cabin lights and the trunk lights with LEDs. That action should cut the power drain of the lights down to about 10% of what it is with the OEM incandescent bulbs.
Thank you Harold57. This forum is so full of good tips. Truly a pleasure to read the postings. U guys rock. Regrettably am not car savvy so just a passive, but grateful , recipient of all the advices. Thank you all
Old 11-08-21, 09:11 AM
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mandyfig
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Here's a handy reference on how to diagnose the battery condition. You must have a multimeter to measure voltage. Saw this at a Wallyworld and snapped a pic. This is actually a tester and will light up the reading.
Old 11-08-21, 10:54 AM
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GmanSC
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I replaced all of my lighting with LEDs, including back ups. LEDs are cheap, buy the whole package.
Old 11-08-21, 12:37 PM
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Caflashbob
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A fully discharged battery can have been permanently damaged.
Old 11-10-21, 12:46 PM
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maxrpm
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Had the same battery drain issue (trunk not closed 100%) while removing my DVD player.
Does the same LED bulb plug/play in interior dome and trunk lights?
Thx
Old 11-11-21, 12:26 PM
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GmanSC
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They are. EBay and Amazon have the whole package for less than 20 bucks. Search for SC 430 LED.
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maxrpm (11-11-21)
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