2025 LC Premium garaged and I'll be away for two weeks. Just bought her a month ago. Should I be worried it may not start when I return?
Leaving For Two weeks Should I Disconnect My 12v Battery?
- Thread starter Mike880505
- Start date
I would think thats a good idea unless you have a battery minder
No, I would not disconnect the battery because it will reset a lot of the settings in the different ECUs. While theoretically it should cause any problems, in practice the consequences may be unpredictable.
Honestly, your battery should be fine after two weeks. We have two hybrid vehicles, and we have never faced any issues after leaving them for as long as a month.
But if you are worried, buy one of these and leave it connected to the battery. It won't damage the battery and keep it fully charged.
Honestly, your battery should be fine after two weeks. We have two hybrid vehicles, and we have never faced any issues after leaving them for as long as a month.
But if you are worried, buy one of these and leave it connected to the battery. It won't damage the battery and keep it fully charged.
We left our 1958 in the garage for three weeks during the winter and it started right up afterwards. There has been some speculation that satellite radio may be causing a power drain. We don’t have a subscription, nor do we lock the car, potentially avoiding a power drain from the alarm system.
OP
OP
- Thread starter
- #5
Thank you so much for this! I'll get one as what I was looking for is peace of mind and this will do that.
I had the issue with a 1st gen prius plug-in back in the day. Battery only kept a charge for about 3 weeks without starting. Very annoying as it required a physical key to gain entry to the battery in the back.
If you use the AC terminal in the engine bay, double check if it has metal contacts on both sides.
To save cost, some of the charger clamps only have them on one side. If the terminal only has one side as well you will need to make sure the clip is oriented to the correct side or it will just be connected on plastic.
If you use the AC terminal in the engine bay, double check if it has metal contacts on both sides.
To save cost, some of the charger clamps only have them on one side. If the terminal only has one side as well you will need to make sure the clip is oriented to the correct side or it will just be connected on plastic.
I left mine outside in the dead of winter for about 2 weeks. Temps in the teens to low 20s. No issue. Not sure why folks are having battery issues, but I have not seen that. It's been damn cold here, too.
- Moderator
- #8
You will not hurt a thing by disconnecting the Neg battery cable and the small connector that's connected to the neg post. You will have to recalibrate the rear hatch opener, easily accomplished, after reconnecting the cable, by manually pushing the hatch closed until it is grabbed by the locking mech........... You will also have to put in your user code to the infotainment screen on the 1st fire up, that's all there is to it.
I do believe a trickle charger is the best option as there is nothing to do except to unplug it before you drive off........ LOL
I do believe a trickle charger is the best option as there is nothing to do except to unplug it before you drive off........ LOL
Easier than disconnecting the Negative battery terminal is pulling the D/C cut fuse (30A fuze) in the engine bay. This is how Toyota does it during shipping and storage.
I went 5 weeks without starting my LC. It started right up after my return.
OP
OP
- Thread starter
- #11
Thanks everyone for your reply's! I've ordered the battery tender on Amazon, so no worries.
Funny thing - when I was having an issue with my Toyota Venza hybrid draining the battery, they suggested that I lock the car even in my garage to "put the car to sleep". According to the Tech, the Venza would use more power if it were left unlocked than if it was locked. It doesn't make sense to me, but I don't know.
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