Battery keeps dying on 2014 LS460

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Jun 24, 2020 | 04:22 PM

#31

3GSShoe

Intermediate

Joined: Dec 2016

Posts: 471

Likes: 74

From: New Mexico

That aside, i doubt I have a bad battery in that it would not start the car after 4-5 days of parking. No one can seem to explain the battery drain. I’ve checked the door jamb switch also so make sure that none are malfunctioning without my knowledge.

Aug 16, 2020 | 05:41 AM

#32

clarence88

Thread Starter

Driver

Joined: Jan 2018

Posts: 59

Likes: 5

From: NY

Sorry for not updating on my situation.

I went to Pepboys, had them run a diagnostics test ($20), which turned up the need for a battery replacement. Did that, problem solved!

For an extra $25, They helped with a slow leak in one of my tires by tightening the valve.

No problem in the last 60 days, so I can say it was the battery

Thanks for all the feedback.

Now onto my Rotor/Break topic!

Aug 18, 2020 | 05:18 AM

#33

drgrant

Instructor

Joined: May 2015

Posts: 780

Likes: 120

From: MA

Quote:

Originally Posted by jmcraney

The thread theme here is 4th generation LS460/600. We sometimes get off subject and this seems to be one of those occasions. As I said, most European cars, Porsche being one, have AGM OEM batteries. The charging systems in cars that are designed for AGM batteries are more complex than the charging systems in cars that are designed for flooded-cell batteries. I can't discuss with you the merits of using just any old charger on an AGM battery. I can only tell you about the information, from multiple sources, that is posted on the Internet. A Google search gets you there quickly. Here is one of many similar answers I found:

https://www.knowyourparts.com/techni...agm-batteries/

The charging system in 4th generation LS460/600s is not designed for AGM batteries - it is designed for flooded-cell batteries.

Lol so what happens if you put an AGM in an LS? It doesn't charge? I put an AGM in my GS350 last year and it works great.

Aug 18, 2020 | 08:19 AM

#34

jmcraney

CL Community Team

Joined: Apr 2008

Posts: 2,222

Likes: 310

From: TX

Quote:

Originally Posted by drgrant

Lol so what happens if you put an AGM in an LS? It doesn't charge? I put an AGM in my GS350 last year and it works great.

That's an excellent question. Thank you for asking. I think you should ask Lexus Corporation, not the dealer, how using an AGM battery in their LS460s would impact the car. And, I think you should ask your AGM battery's manufacturer, not the battery dealer, how using their AGM battery in an LS460 would impact the battery. Please share with us any information on this subject that you might acquire.