97 LS400 Battery Drain

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Apr 4, 2024 | 07:42 PM

skmc08

Thread Starter

1st Gear

Joined: Apr 2009

Posts: 1

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From: TN

97 LS400 Battery Drain

My 97 LS400 is draining my Battery after sitting in driveway for a week or two. When I go out the start it up it completely dead. Any suggestions on where to start.?

Apr 4, 2024 | 10:04 PM

LeX2K

Lexus Fanatic

Joined: Sep 2010

Posts: 26,022

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From: Alberta

First step is get the battery tested any auto parts store will do it for free and give you a print out of battery health.

Apr 4, 2024 | 11:23 PM

Yamae

CL Community Team

Joined: Aug 2011

Posts: 4,178

Likes: 1,008

From: Japan

I'd simply try this method first. You don't need to remove fuses. Every fuse has a small resistance and the voltage dropping of mV order tells you which line is draining.