Battery discharge, 2024 Luxury+ (1 Viewer)

[AndrewZH]

Hello everyone!

First, i wanted to thank this community. I love this car and I've been reading this forum for quite a while, some tips have really helped me.

Now I've got a problem that I can't solve either with dealership or with the elecritians. We have a 2024 GX550 Luxury+ and we drive it only on weekends. We drive it about 60 miles for 2 hours on highway to the countryside and back each week.

Since purchase in January 2024 the battery discharged completely in July 2025. After jump starting it, no electrical leaks were detected and battery was fully charged by the dealership. Now the battery is discharged again. The battery itself is in perfect condition. Everyone says that we should drive it more to keep battery charged, however it's our first Toyota/Lexus in 30 years that has this issue.

Have any of you encountered this problem? Does it make sense to change a battery type in this case or constantly use a jump starter? If yes, which type of battery or a jump starter would you recommend?

Thanks in advance!

 

[remmy]

Your battery can get damaged by draining completely out especially multiple times. I’m not surprised it drains like that considering all the electronics in the car but it does seem a bit excessive. Your battery may be faulty as well and or time for replacement.

I’d pick up a battery tender and this
jump pack. Works great.

 

[Mike'sGX]

Batteries can test good and still be bad.
I use 3 CTEK MXS 5.0 battery chargers / Maintainers (from Amazon) for my 2 SUVs and tractor.

 

[cmfhsu]

Sorry to hear about your trouble. I probably drive about as much as you or maybe less, and my battery has been fine so far.

 

[BackRdRnr]

Hello Andrew your problem is 1) a drain of electricity by the vehicle or 2) the battery is bad does not produce enough electricity. My GX has been sitting in garage for 4 weeks at a time with no issues. My other Garage car has a trickle charger because it sits for months. I would go back and insist on a new battery before the warranty expires if a battery drain test does not find a draw down on your present battery. You should not have to tend to the battery if you drive the truck every week.

 

[rocksallday]

the GX550 has a lot of electronics in it, which had me concerned about discharge when I first got it, so I spent hours logging discharge rates manually with a voltage/current meter.
what I found is that the car has a proximity sensor for the remote/keys which turns on some of the electronics in the car (e.g., interior lights). when the electronics in the car turn on, it's a huge drain, even when car is locked with no one in it.
if you keep your remote in the garage close to the car, that could explain some of it.

 

[jeffhardee]

Take a look at South Main Auto on Youtube. Eric has chased down several "drainage" issues. He works through the fusebox to figure out which circuits are not playing nice.

 

[BoostedGX]

I’ve had a Toyota factory go bad prematurely…. Sometimes you get a bad one …. Interstates are notorious for going bad early after the big batrery merger.