replacement battery is dead again even after the ECU/ECM replacement. so frustrated!

 

How long was it sitting this time?

 

Very troubling.

 

Has any 2014 or 2015 ES reported this problem?

 

only 2 days. Service manager believes its my keyfob doing this. I say NO. Anyway a Lexus technician (from Georgia) will be at the dealership Mar 12th. He will look at it then.

 

dealer called today and said there is a battery drain. They said a typical car draws 30-40 milliamps when shut off. They said mine is drawing 400 milleamps. Hopefully they find the problem soon!

 

Could it a a bad light switch somewhere you don't normally see like the trunk?

 

I told the dealer to check that along with the fuel evaporator pump/ Hopefully they find the cause.

 

Dealer located the drain issue. I have the ultimate package and it comes with a seat extender on the drivers seat. The button was wedged in the on position thus what was causing the battery to drain. lol They are replacing the switch and I will conduct a test after that to make sure, fingers crossed.

 

Excellent.

 

Toyota Battery sucks. After replacing the Batteries in my first 2 ES350, I decided to go with a Die Hard in my new one.

 

I got 9 1/2 years out of the Lexus battery in my 2006 GS.
My RX was 5 years old when I traded it in with the original battery.

 

Hey sapd,

My battery just died today on my 2013 gs350 f-sport with about 11k miles on it.

Where is that seat extender button that you were mentioning was stuck? I want to see if i might have the same issue since you said a new battery and a new ecm/ecu didnt fix it.

I thought there was something wrong with the drivers seat on mine because it seems that it doesnt always go back to the same seat position when turing the car back on.

Hopefully now for you its fixed!

 

its just by the seat button on the left side by the seat. goes up or down. I think the seat extender only comes with the UL package.

 

Ok thanks, i will take my car to the dealer and tell them to test to see if there is a draw on mine... This is an odd problem, it seems to effect several models but there really hasnt been a defined root cause.

I will try and see if i can get my dealer to not just replace my battery but too diagnose it and i will post back what they come up with.