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- #1
Working on the LC today, had the doors open for about 2 hours and the battery went flat again. This is the 4th or 5th time, so out it came and going to replace it with an optima, if I can find one!
Dead Battery again!
- Thread starter EOD Guy
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- #2
Hmmm. Don't have our LC yet, but on our Highlander if one leaves the doors open, following a short period of time it powers off the lighting and the ability to operate other electrical devices, such as power windows, etc. Have you modified anything electrical?
Ever try( Odyssey batteries) both are good batteries
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- #5
Nope, any additions are powered through a resettable circuit breaker, which I leave in the open state. The battery went flat the 1st time, in like the first week I owned it.
Is that the stock battery location or did you setup a dual battery?
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- #8
Stock, direct replacement.
Does that seem odd to you? It seems odd to me that batteries would go dead from interior lights being on for a couple of hours....
Do you think it has anything to do with the LC hybrid related issues?
Did you have to mod/remove anything to get it in there?
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- #12
No, the optima battery is the same size as the OEM battery, just very tight spaces. There are 3 bolts and one nut, all 12mm, one on each side of the battery. Neg cable and adjoining connector relatively easy to disconnect. Leave the neg battery post connect on the battery, the pos cable has to be removed from the battery post and moved out of the way, once the battery hold down has been unbolted, you can barely wiggle it out of the opening and just as hard getting it back in.
Interesting. We came back from a 2 week trip and I was actually wondering if the LC would even start. Started up no issues thankfully. My Subaru would already be dead by day 5 (battery drain that I never could find). I do agree that the optima batteries are top notch and are my replacements of choice on all my cars. I do usually go with the red.
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- #14
The red wouldn't fit, posts (neg/pos) were on the opposite sides
Thanks for the heads up! I’ll be going with the yellow too lol
- Jun 8, 2024
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Did you remove the storage tray next to the battery compartment when you did the work?
Looked like lots of access to me.
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- #17
You have to remove both trays, the hold down strap will not come out without both removed.
What was so painful about it? Removing the trays to get the strap?
I had the opposite problem with battery.. when I finally got my windshield replaced… while other thread on here….the windshield guy left my map light on… I didn’t notice it for 2 days!!! Car started right up and been fine for several weeks now! Knock on wood! Nothing is worse than hearing a “ click” sounds when trying to start your car!
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- #20
Getting the strap out of the opening even with the trays removed, then maneuvering the battery out/in while keeping the pos cable arrangement out of the way. I mean it wasn't that hard to do, just a PITA. If the strap had a hinge on the leg, it would have been a breeze.
