RX350 Battery Details

Reply Subscribe

Thread Tools

Search this Thread

Apr 14, 2016 | 05:08 PM

#16

carguy75

Instructor

Joined: Nov 2015

Posts: 1,070

Likes: 367

From: Atlanta, Georgia

Quote:

Originally Posted by klwagoner

I replaced my Lexus battery a few months ago. I was looking under the hood, maybe checking fluids (can't remember now) and I saw one of my battery terminals was COVERED in corrosion. I've never seen one that bad. So while trying to remove the cable, we pulled the post out of the battery -- that's how corroded it was (even after doing the baking soda/water thing). At that point there was nothing to do except buy a new battery. The odd thing, to me, is that I've had the Lexus almost two years and it has never not started or even hesitated to start. Just lucky, I guess.

Damn!!!

That got my OCD issue all fired up.

I am about to fly to your area and clean that crap myself.

Apr 15, 2016 | 08:19 PM

#17

sweetboy02

Intermediate

Joined: Mar 2011

Posts: 494

Likes: 5

From: MA

Quote:

Originally Posted by lex_rx

^ What, you didn't perform an engine wash for two years?:-)

It's almost spring cleaning time again.

engine wash????? I haven't done that for 5 years

Apr 18, 2016 | 11:06 AM

#18

ericsan13

Thread Starter

Racer

Joined: Sep 2012

Posts: 1,304

Likes: 177

From: WA

Quote:

Originally Posted by FLYCT

At 12.11v your battery is only at a 50% State of Charge.

You either have a weak battery or you have something discharging your battery overnight due to a high parasitic drain.

Once again, anything over 50 ma or so is suspect.

Here's a good YouTube video with explanation and troubleshooting info

How To Perform a Parasitic Draw Test - EricTheCarGuy - YouTube

Good luck.

I tested again this weekend and let the computer go to sleep. Luckily it turns out I have no parasitic drain as the current drops to 20ma after 2 minutes. It's probably an issue with the battery.

Apr 18, 2016 | 12:20 PM

#19

FLYCT

Moderator

Joined: May 2012

Posts: 1,263

Likes: 15

From: Florida

Quote:

Originally Posted by ericsan13

I tested again this weekend and let the computer go to sleep. Luckily it turns out I have no parasitic drain as the current drops to 20ma after 2 minutes. It's probably an issue with the battery.

That's excellent news.

I believe your 2010 RX350 takes a Group 24F battery, which is one of the most common car batteries on the market.

If your battery is more than 3 years old just replace it. You're location shows Washington State. Batteries do well in the PNW. Here in Florida heat kills batteries and rarely do they go more than 3 years before failing.

If you're a member of Costco check out their prices for a group 24F.