Battery drains
#46
Pole Position
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My 03 SC430 has a new battery, but still has an ongoing intermittant problem. Occasionally , even when just sitting overnight
the battery is completely dead. Other times , months go by without an issue .
I assume its an occasional short in the system, Anyone else ever experience this ? , Thanks for any replies
the battery is completely dead. Other times , months go by without an issue .
I assume its an occasional short in the system, Anyone else ever experience this ? , Thanks for any replies
#47
Driver School Candidate
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Several issues associated with the battery drain. If you have any after market device installed, your first step is to disconnect them, one by one, then hook up an Amp meter to see any improvement. Intermittently problem is hard to diagnose. I would try with a brand new battery.
I will try just locking the door at night and not activating alarm, as someone suggested ...
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DshngDaryl (03-02-21)
#48
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My 03 SC430 has a new battery, but still has an ongoing intermittant problem. Occasionally , even when just sitting overnight
the battery is completely dead. Other times , months go by without an issue .
I assume its an occasional short in the system, Anyone else ever experience this ? , Thanks for any replies
the battery is completely dead. Other times , months go by without an issue .
I assume its an occasional short in the system, Anyone else ever experience this ? , Thanks for any replies
It could be the voltage regulator on your alternator is going bad and it isn't charging on a consistent basis (Which is why you needed a new battery) If you go to an Autoparts store, they can check your battery and alternator. If you go to Autozone or Oreilley's it is free for them to check those two things
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bmanone (03-05-21)
#49
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Added a battery maintainer. Easy plug in
#50
Driver School Candidate
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I changed trunk light bulbs to led bulbs last year , but could just remove them as not necessary......
Doubt its an alternator issue, as we only drive short trips around our home..
Since its intermittant ,and rarely happening , I don't dare take it in to have someone start an expensive search and just replace random parts,
Other than this , My sc430 is a dream ,had it many years, and by far the best car I have ever owned
#51
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If you don’t drive your car often like most of us here, the best and easiest solution for your issue is a battery tender. Some member installed the connector plug near the windshield wiper for ease of plug and unplug. The instruction is in one of the battery drain threads. Search for it.
#52
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Battery tenders are a must for cars not used as daily drivers, most especially during this Covid times. Easy connect features on most recent style tenders with intelligent battery chargers.
#54
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If you go to Autozone or Oreilley's it is free for them to check
#55
Lead Lap
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If your trunk lights are LEDs, they are not the culprits.
#56
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After my 5-year-old Interstate AGM bit the dust due to lack of driving during Covid, I replaced it with a $300 Optima yellow-top and invested in a $200 Optima charger. My old battery only had issues if I didn't drive the SC for three weeks, until it crapped-out entirely. I plan to keep this new battery on the charger when not driving for weeks. The Optima charger analyzes the battery each time it is connected and then alternates and modulates the voltage and amperage among charging/conditioning/maintenance modes in order to help prevent the damage incurred when a battery sits in a depleted state.
I'm not sure if the Optima batteries and chargers are worth the extra money, but I will find out when I see how long this one lasts.
I'm not sure if the Optima batteries and chargers are worth the extra money, but I will find out when I see how long this one lasts.
#57
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Mine is a daily driver, but over the weekend, it HAS suffered a few episodes of a light being on all weekend due to our being too gentle with the doors. After a severe drain event like that, the battery is never the same again. So, I end up replacing the battery. After two such events, it became evident that daily connection to a batter tender was way better than
1. Ruining a battery and needing to buy a new one
2. Turning the key while trying to get to work only to hear just a "click"
With the connection point placed so conveniently on my car cars, it's really no effort to connect and disconnect EVERY TIME. Add to that the benefits of the tender doing its conditioning work daily and seeing the battery condition as indicated by the CTEK's status lights each morning.
They are not free, but still preferable to paying for batteries on an accelerated schedule.
1. Ruining a battery and needing to buy a new one
2. Turning the key while trying to get to work only to hear just a "click"
With the connection point placed so conveniently on my car cars, it's really no effort to connect and disconnect EVERY TIME. Add to that the benefits of the tender doing its conditioning work daily and seeing the battery condition as indicated by the CTEK's status lights each morning.
They are not free, but still preferable to paying for batteries on an accelerated schedule.
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lbergner
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03-19-12 04:59 AM