So I noticed that my battery is dying again. I got the car used, but from the service history, the battery was replaced 2 years into service, then 2 years later it needed to be replaced again; now, little over 1 year it's dying again. They're all Lexus batteries (not sure who manufacture them).

Is it just bad luck? How are you guys' battery history? I'm in AZ, so it's hot here, but batteries from other cars last minimum of 3 years or more from what I can tell.

 

Don't make the mistake that the previous owner seems to have made (if I'm understanding your post properly). Don't get the battery replaced at the dealership. It's stupid expensive, and the warranty, from what I recall, is crap. Just go to Autozone and get a duralast or something. You can pay like $100 (with installation, which is free) for a battery with an 8-year warranty.

... With that said, my original Lexus battery lasted nearly five years in my IS350. So I wonder if there's some kind of short or small electrical leak in your car.

 

hm, I'll check that out. If there is a leak, it must be recent so it doesn't explain the constant replacements before. A few months ago, I left the car parked for 4 days straight and start it without issues. Now, when I tried to start it in the morning, it will hesitate. The battery only reads 12.1V, which I'm surprised it even starts.

 

I'm still on my original battery with a 2007 is350, and I've had a sub on there for a couple years now too. Difference must be the weather (as I'm in Toronto) or something is wrong there.

 

BTW, my factory battery is made by panasonic I believe.

 

Small delay in starting means the battery is about to go. Same thing happened to me. Copped a duralast gold which has 5 year warranty for 115 bucks.
Good luck!

 

My 07 350, too. Of course, my wife has driven it less than 30,000 miles, so I think that has helped. I had it checked a while back and it was fine. Time to check again.

 

I'm on original panasonic battery with 07 350 too. Just had to top up the cells with distilled water last year and it was measured at 520 cca so still good.

Won't be replacing with OEM when it's time though. Those suckers retail for $1400

 

^Cough cough...$140.

OP, to me is sounds like you've got either an alternator not working at 100% or an electrical short causing a continous power draw. My Nov '05 manufacturer dated '06 IS350 Panasonic battery I just replaced this past Monday. Still had an acceptable 383CCA, according to the printout from the dealership; but of course it recommended replacement. I'd say I got my 8yrs worth out of that battery!

Stuck in a 5yr, 18 month free replacement battery for $60' I'm good to go now!

 

In the Phoenix area, 2 years is about all you will get from most batteries. I noticed that the Lexus batteries have like an 8 year warranty, so I had my last one replaced under warranty. Good thing I noticed that while sitting outside the Autozone about to buy a new one.

 

heat reduces the life of batteries, here in Houston 3-4 years max or else youre really rolling the dice on where and when it will strand you. Not worth trying to squeeze every bit of life out of it.

 

1 year max in my is350

EXIDE battery for 100$


I live in SA

 

I have an 09 is250. The first battery lasted three years the second one for three weeks and the third was bad been good since February. So yes I'm with the OP the batteries are problematic

 

On both my GS I was replacing them every 2 years. Then I turned off the autolights and battery life improved big time. I've spoken to other people with the same issue. Lexus service says everything is okay but they think we're dummies. Anyway, turning off the auto light switch is working for me so I won't complain.

 

So after a little bit of testing, I found that the car is is drawing 2 Amps when the car is off. I was almost sure that something in the car is not working right, but talking to someone that needs to jump my car, he said that a bad battery could actually show current draw. Anyone can confirm that? I got the battery tested, and it's actually a bad battery as well. The dealer is going to replace it under warranty -- I wanted to ask them to test the current draw again after the replacement, but think that they might charge for diagnostics.