gtmuggs

I've had the car about 4 months now and the battery has died twice. Both times it was after the car had sat for about 6 days. Would anyone know a possible reason why my battery is draining down after 6 days of the car being parked?

jmcraney

What you described is typical of a battery that is near the end of its life. Have your battery tested by a battery professional and replace it if necessary.

SW17LS

I agree with jmcraney, time for a new battery. Makes sense since your car is ~ 5 years old.

Where in MD do you live? I have a great independent Lexus guy in Rockville I can refer you to.

gtmuggs

I live in Northern Maryland around APG however I do work in Laurel so i'm definitely open to your referral

SW17LS

I'll send you a PM!

Caflashbob

SharksCity

2013 Has issue with ecu software. you need to update to new version software. Same thing happened on my 2013 Fsport

Scrutator

I'm now having the same issue: Battery dead or nearly so after sitting for five days. Did Lexus update this under warranty or under goodwill? Is there a TSB on this that you know of?

Thanks!

Edit: Found the Technical Service Information Bulletin L-SB-0061-13 related to this problem: https://static.nhtsa.gov/odi/tsbs/20...61776-2273.pdf

gtmuggs

Thanks for this info!!!!

gtmuggs

Do you think your Lexus guy in Rockville can do the software update mentioned by SharksCity or is that a factory Lexus trip?

SW17LS

Its possible, I'd give him a call

My guess is thats a dealer job though

SharksCity

Depend on how good your relationship with your dealer. but most likely they will charge you 1 hour. good luck

gtmuggs

So just to update the post, I have contacted Lexus of Towson and they will be performing the Technical Service Information Bulletin L-SB-0061-13. Per the rep that I spoke to, it will take about an hour and cost $140 if your car is outside of the warranty period.

Mbbarron

I just experienced the same issue yesterday on my 2013 LS after being on vacation for 12 days. I thought maybe it was related to forgetting to unplug my car charger before I left or if it maybe it was related to the Grom VLine 2 that's installed. I had it jump started and it seems fine today but AAA was concerned that it needed a "professional charge". My local indy shop thought it should be fine after running for 20 min after the jump start. Mine is out of warranty but I'm pretty sure it's not the original battery. I'll wait to see if I have further issues.

gtmuggs

Mbbarron, I ended up taking my car to Lexus of Towson to have the service bulletin (L-SB-0061-13) performed. My car was outside of the warranty coverage period as well with 74k on it and they charged me $140 to do the ecu re-flash. I just parked the car yesterday and will let it sat for about a week or so to see if what they did worked, then I will update the post.