Lexus 350RX-in garage for winter & not being used but is started every few days. 1 day had to have it jumped & then drove regularly 4 wk. Battery dead again. what will happen to electronics if left?


Asked by Mar 13, 2014 at 08:18 PM about the 2009 Lexus RX 350

Question type: General

Car in garage for winter & not being used but run every few days. Battery died when it
went a week without start. Had it jumped & was driven for a week. Then it was left for four
days without start & the battery dead again.  What will happen to electronics if I leave the
car like this for another 1 1/2 months till I get home from FL

6 Answers


If you are going to be gone that long remove the battery until you get back so you can have it checked out properly. The on board systems will just go back to factory specs when a new battery is installed and started up.

2 of 2 people found this helpful.

No one there to remove battery. Can I just leave it that way & have it jumped when I get home. If so, will the electronics be ok??


Nothing will happen to the car currently. Just charge up the battery when you get back or jump start it again. I suggest purchasing a "battery tender" and using that when you are away. high- efficiency.html

1 of 1 people found this helpful.

Tennisshoes Thank you for your help. Tom about a year ago I had the car jumped. When AAA showed up I asked him if we could put a kill switch on the battery. We use that on our Accura that we leave in Fl for 6months & it works great. He told me that I couldn't use one on a car like my Lexus because "all the settings of the electronics would be gone. " & the car would never be the same. Sounds like you disagree with this.Thanks for the link. Will check it out.

1 of 1 people found this helpful.

You hear all kinds of stuff like that, the only thing that I can think of on your Lexus is the possibility that the radio anti-theft might activate and you will have to get the code from the dealer or just take the car there. And yes all of the setting will be gone after a complete power down like you have, and they will return to factory default, then the ECM will have to relearn the vehicle and driving habits but it should return with 25 to 30 miles of driving if not sooner.

1 of 1 people found this helpful.

Thanks tennisshoes .You & Tom have been most helpful. Think Iwill just let it go till I get home & check out the website about battery tenders. If you think of anything else please let me know.

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