IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

3rd Gen IS250 Fsport battery reverse hookup.

Thread Tools
 
Search this Thread
 
Old Apr 1, 2021 | 12:06 PM
  #1  
Wingnutt92's Avatar
Wingnutt92
Thread Starter
Driver School Candidate
 
Joined: May 2014
Posts: 16
Likes: 0
From: Kentucky
Default 3rd Gen IS250 Fsport battery reverse hookup.

Good afternoon everyone. So while I was away my wife had accidentally hooked my battery up backwards. Such resulted in the blown fuse. I have a new fuse on order, however I am having difficulty separating the fuse cluster from the box itself. Any tips?

Last edited by Wingnutt92; Apr 1, 2021 at 12:07 PM. Reason: Lack of information.
Reply
Old Apr 1, 2021 | 12:12 PM
  #2  
Sasnuke's Avatar
Sasnuke
Lexus Test Driver
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Default

Could you indicate which fuse it is you're trying to replace?
A few others have hooked the battery up backwards and had several blown fuses...so if you only have one then you are certainly lucky.
If you could identify the fuse more help will likely be forthcoming.
Reply
Old Apr 1, 2021 | 12:28 PM
  #3  
Wingnutt92's Avatar
Wingnutt92
Thread Starter
Driver School Candidate
 
Joined: May 2014
Posts: 16
Likes: 0
From: Kentucky
Default



Reply
Old Apr 1, 2021 | 12:40 PM
  #4  
Wingnutt92's Avatar
Wingnutt92
Thread Starter
Driver School Candidate
 
Joined: May 2014
Posts: 16
Likes: 0
From: Kentucky
Default

Originally Posted by Wingnutt92

All 4 of those fuses are in an assembly. I see tabs to separate the cluster from the box, but even depressing them I can't seem to separate the two so I can get to the nuts attaching the wires to the bottom of that fuse.
Reply
Old Apr 1, 2021 | 01:08 PM
  #5  
specONE's Avatar
specONE
Pole Position
15 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Jan 2008
Posts: 2,002
Likes: 533
From: SF, California
Default

you will have to disassemble majority of the the fuse box and undo the fuse from the bottom as well before you can pull it out.
Its not fun and time consuming. Use small picks and small flathead to separate the bottom housing of the fusebox from the top portion

Last edited by specONE; Apr 1, 2021 at 01:13 PM.
Reply
Old Apr 1, 2021 | 01:12 PM
  #6  
Wingnutt92's Avatar
Wingnutt92
Thread Starter
Driver School Candidate
 
Joined: May 2014
Posts: 16
Likes: 0
From: Kentucky
Default

Originally Posted by specONE
you will have to disassemble majority of the the fuse box and undo the fuse from the bottom as well before you can pull it out.
Its not fun and time consuming
That's unfortunately what I was thinking was gonna be the case. Any tips on doing that? Also will it hurt if I disconnect the power steering computer in order to get the battery shelf out?
Reply
Old Apr 1, 2021 | 01:13 PM
  #7  
specONE's Avatar
specONE
Pole Position
15 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Jan 2008
Posts: 2,002
Likes: 533
From: SF, California
Default

Originally Posted by Wingnutt92
That's unfortunately what I was thinking was gonna be the case. Any tips on doing that? Also will it hurt if I disconnect the power steering computer in order to get the battery shelf out?
Use small picks and small flathead to separate the bottom housing of the fusebox from the top portion
As long as the 12volt battery is disconnected, it is okay to unplug other items, just make sure to reconnect when done.
Reply
Old Apr 1, 2021 | 01:15 PM
  #8  
Sasnuke's Avatar
Sasnuke
Lexus Test Driver
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Default

Originally Posted by specONE
Use small picks and small flathead to separate the bottom housing of the fusebox from the top portion
As long as the 12volt battery is disconnected, it is okay to unplug other items, just make sure to reconnect when done.
^^ Agreed with specOne on this...just plug everything back in before you connect the battery and you'll be fine.
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

Toyota and Lexus Join Mille Miglia For The First Time

 Verdad Gallardo
story-1

Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

 Michael S. Palmer
story-2

5 Best & 5 Worst Lexus Daily Drivers

 Joe Kucinski
story-3

Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

 Brett Foote
story-4

2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

 Michael S. Palmer
story-5

Top 10 Most Confusing Things Lexus Has Ever Done!

 Joe Kucinski
story-6

2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

 Michael S. Palmer
story-7

10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

 Joe Kucinski
story-8

8 Weirdest Things Lexus Has Ever Built

 Verdad Gallardo
story-9

10 Lexus Designs That Have Aged Like Fine Wine

 Verdad Gallardo
Old Apr 1, 2021 | 01:16 PM
  #9  
Wingnutt92's Avatar
Wingnutt92
Thread Starter
Driver School Candidate
 
Joined: May 2014
Posts: 16
Likes: 0
From: Kentucky
Default

Thank yall.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Nigel
SC430 - 2nd Gen (2001-2010)
154
May 6, 2025 03:37 PM
roshko
LS - 1st and 2nd Gen (1990-2000)
11
Apr 8, 2021 07:15 PM
JGO
IS - 3rd Gen (2014-present)
4
Aug 4, 2020 01:10 PM
Shoefun
GS - 2nd Gen (1998-2005)
8
May 21, 2020 12:46 PM
tronder
RC - 1st Gen (2015-present)
6
Jul 23, 2019 12:00 AM




All times are GMT -7. The time now is 06:51 PM.

story-0
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-1
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-18 14:36:21


VIEW MORE
story-2
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-3
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-4
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-5
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-6
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-7
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-8
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-9
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE