LS suddenly died
Thread Starter
Rookie
Joined: Dec 2021
Posts: 37
Likes: 9
From: GA
LS suddenly died
Good evening,
07 LS460 RWD
Today, I was driving and pretty much every warning light came on and I lost all power, and could not restart. Message on the dash said something in regard to the electrical system, as well as almost every other system, I can’t fully remember as I was in panic mode lol.
I do recall hearing a very faint humming sound that i had never heard before. I noticed that it would change with the RPM, no matter what gear I was in. I would also get this random code “p033d” making the car go into a limp mode, so it seemed. I would clear it, and it’d drive just fine only returning after a few 100 miles. Last time that happened, my battery was very weak and threw the same exact code, and had been replaced. Now, the car has 0 power (can’t lock doors or anything) and when I attempt to jump it, I only get a low battery message.
This leads me to think that my alternator has taken a crap on me.
Before I take on the task of replacement, I just wanted to get someone’s take on this.
Any advice would be greatly appreciated.
07 LS460 RWD
Today, I was driving and pretty much every warning light came on and I lost all power, and could not restart. Message on the dash said something in regard to the electrical system, as well as almost every other system, I can’t fully remember as I was in panic mode lol.
I do recall hearing a very faint humming sound that i had never heard before. I noticed that it would change with the RPM, no matter what gear I was in. I would also get this random code “p033d” making the car go into a limp mode, so it seemed. I would clear it, and it’d drive just fine only returning after a few 100 miles. Last time that happened, my battery was very weak and threw the same exact code, and had been replaced. Now, the car has 0 power (can’t lock doors or anything) and when I attempt to jump it, I only get a low battery message.
This leads me to think that my alternator has taken a crap on me.
Before I take on the task of replacement, I just wanted to get someone’s take on this.
Any advice would be greatly appreciated.
Last edited by NewG; Sep 7, 2023 at 06:21 PM.
Lexus Fanatic
Joined: Sep 2010
Posts: 26,058
Likes: 4,332
From: Alberta
Get the battery load tested if it passes charge it up and start the car. Measure battery voltage engine running and report back. If you don't have a volt meter one of these will do the job.
Thread Starter
Rookie
Joined: Dec 2021
Posts: 37
Likes: 9
From: GA
Get the battery load tested if it passes charge it up and start the car. Measure battery voltage engine running and report back. If you don't have a volt meter one of these will do the job.
https://www.amazon.com/dp/B07JBWGRQL/
https://www.amazon.com/dp/B07JBWGRQL/
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Thread Starter
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Joined: Dec 2021
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From: GA
I will say that I haven’t had the battery but a few months (I know they can go bad whenever sometimes) but I typically clean my posts and terminals when I clean under my hood. What you see wasn’t there about a month ago.
is it worth mentioning that the front of the alternator looks like it’s burned? And I can’t tell honestly if that’s ever been replaced or not.
is it worth mentioning that the front of the alternator looks like it’s burned? And I can’t tell honestly if that’s ever been replaced or not.
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Lexus Fanatic
Joined: Sep 2010
Posts: 26,058
Likes: 4,332
From: Alberta
Those terminals and posts are in bad shape, unreliable connection waiting to happen especially the negative side. See this post on how to clean them properly
https://www.clublexus.com/forums/rx-...l#post11573616
That battery is leaking acid that's why the terminals are corroding.
https://www.clublexus.com/forums/rx-...l#post11573616
That battery is leaking acid that's why the terminals are corroding.
Thread Starter
Rookie
Joined: Dec 2021
Posts: 37
Likes: 9
From: GA
Those terminals and posts are in bad shape, unreliable connection waiting to happen especially the negative side. See this post on how to clean them properly
https://www.clublexus.com/forums/rx-...l#post11573616
That battery is leaking acid that's why the terminals are corroding.
https://www.clublexus.com/forums/rx-...l#post11573616
That battery is leaking acid that's why the terminals are corroding.
Thread Starter
Rookie
Joined: Dec 2021
Posts: 37
Likes: 9
From: GA
Thread Starter
Rookie
Joined: Dec 2021
Posts: 37
Likes: 9
From: GA
