Notices
ES - 1st to 6th Gen (1990-2018) Forum for all 1990 - 2018 ES Models

thermostat

Thread Tools
 
Search this Thread
 
Old Feb 6, 2018 | 10:07 AM
  #1  
hazmatkid8's Avatar
hazmatkid8
Thread Starter
Driver School Candidate
 
Joined: Feb 2018
Posts: 5
Likes: 0
From: florida
Default thermostat

2003 lexus es 300 thermostat location
Reply
Old Feb 6, 2018 | 10:40 AM
  #2  
seanddd's Avatar
seanddd
Driver School Candidate
 
Joined: Oct 2017
Posts: 38
Likes: 8
From: PA
Default

Driver side of the engine. Need to remove air filter box, throttle body and battery. Get 1-gal SLL 50/50 mix ready.

Originally Posted by hazmatkid8
2003 lexus es 300 thermostat location
Reply
Old Feb 6, 2018 | 11:28 AM
  #3  
LeX2K's Avatar
LeX2K
Lexus Fanatic
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2010
Posts: 25,955
Likes: 4,287
From: Alberta
Default

Reply
Old Feb 6, 2018 | 12:28 PM
  #4  
hazmatkid8's Avatar
hazmatkid8
Thread Starter
Driver School Candidate
 
Joined: Feb 2018
Posts: 5
Likes: 0
From: florida
Default Thanks

So its take air cleaner assembly an battery out the 12 mm but an 3 10mm but on the housing swap out with dot facing up refill an resemble and good to go
Reply
Old Feb 7, 2018 | 07:14 PM
  #5  
speedkar9's Avatar
speedkar9
Lexus Champion
 
Joined: Aug 2012
Posts: 1,729
Likes: 131
From: Toronto, Canada
Default

Thanks for posting my video, hope it helped.
Reply
Old Feb 8, 2018 | 07:50 AM
  #6  
hazmatkid8's Avatar
hazmatkid8
Thread Starter
Driver School Candidate
 
Joined: Feb 2018
Posts: 5
Likes: 0
From: florida
Default

is it a hard replacement just take the battery aircleaner assembly out and it the 3 bolts like in the video bout an hour or 90 min worth of work
Reply
Old Feb 8, 2018 | 01:22 PM
  #7  
HomerJay's Avatar
HomerJay
Intermediate
10 Year Member
Liked
Loved
 
Joined: May 2013
Posts: 337
Likes: 50
From: NY
Default

You have an excellent DIY video explaining in detail the procedure. Overall not difficult, but only you know if you have the skill level to move forward.
Reply
Old Feb 8, 2018 | 01:25 PM
  #8  
hazmatkid8's Avatar
hazmatkid8
Thread Starter
Driver School Candidate
 
Joined: Feb 2018
Posts: 5
Likes: 0
From: florida
Default

I've done full suspension replacement on brand new cars rebuilt motors aint much I cant do I know it says 90 min in the book but doesn't look like 90 min
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

10 Lexus Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-1

8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

 Michael S. Palmer
story-2

10 Best Lexus Models No One Remembers

 Joe Kucinski
story-3

TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

 Michael S. Palmer
story-4

Top 10 Lexus & Toyotas to Drive Before You Die!

 Joe Kucinski
story-5

Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

 Joe Kucinski
story-6

Lexus LC500 Convertible Auction: A Preview of Rising Values?

 Brett Foote
story-7

GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

 Michael S. Palmer
story-8

9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

 Joe Kucinski
story-9

2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

 Brett Foote
Old Feb 8, 2018 | 01:27 PM
  #9  
hazmatkid8's Avatar
hazmatkid8
Thread Starter
Driver School Candidate
 
Joined: Feb 2018
Posts: 5
Likes: 0
From: florida
Default

I put a blower an full face suspension on a 2015 ss Camaro brand new less than 60 miles with hand tools and a floor jack
Reply
Old Feb 8, 2018 | 02:04 PM
  #10  
crwys's Avatar
crwys
Lead Lap
 
Joined: Nov 2013
Posts: 414
Likes: 30
From: California
Default

Lol oh boy. If you have done all this other work you shouldn't have to ask for help on something as simple as a thermostat location.
Reply
Old Feb 10, 2018 | 01:04 AM
  #11  
artbuc's Avatar
artbuc
Instructor
20 Year Member
Liked
 
Joined: Oct 2005
Posts: 1,090
Likes: 129
From: pa
Default

Originally Posted by crwys
Lol oh boy. If you have done all this other work you shouldn't have to ask for help on something as simple as a thermostat location.
Was thinking the same. Like asking where the engine is located because he wants to install a new timing belt, a job he has done many times before.
Reply
Old Apr 7, 2018 | 11:27 AM
  #12  
TJEDunn's Avatar
TJEDunn
Rookie
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: GA
Default

Trying to get this job done this weekend. Ran into trouble, need help. Metal pipe that connects lower radiator hose to thermostat housing. I can't get it to lock into the housing end. There is a lip to it that I assume needs some force to pop into place. But no matter how hard to work it I can't get it to lock in. Am I missing something? Try harder? Thanks
Reply
Old Apr 7, 2018 | 03:41 PM
  #13  
TJEDunn's Avatar
TJEDunn
Rookie
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: GA
Default

HAha.... that pipe has rubber o-ring that fell under car. Got everything together. Not a complicated diy but time consuming and a pain due to location of stat housing.

weird think is that the engine temp is still not getting up to normal. I noticed my 2003 es300 was generally running under normal temp. Then I got a p0128 code. Assumed it was stat and replaced. If code return I guess I'll have to look at the sensor. ����*♂️
Reply
Old Apr 9, 2018 | 06:34 AM
  #14  
TJEDunn's Avatar
TJEDunn
Rookie
 
Joined: Jan 2018
Posts: 45
Likes: 2
From: GA
Default

Update: after driving to work today looks like I'm all good. Vehicle wasn't warming up sitting in the driveway, but a ten minute drive got it to normal temp and stayed there. I think (but not sure) part of the reason it wasn't warming up at first is that the computer was resetting the idle. Anyway. If u do this job take a drive for a while before judging the results.
Reply
Old Apr 9, 2018 | 08:26 AM
  #15  
HomerJay's Avatar
HomerJay
Intermediate
10 Year Member
Liked
Loved
 
Joined: May 2013
Posts: 337
Likes: 50
From: NY
Default

Glad you figured it out. To avoid leaks it's best to replace the o-ring, hopefully it will not be a problem reusing the old one.
Reply



All times are GMT -7. The time now is 09:20 PM.

story-0
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
story-1
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-2
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-3
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-4
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE
story-5
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

Slideshow: Top 10 Lexus/Toyota models with the lowest 5-year depreciation rate.

By Joe Kucinski | 2026-04-08 12:19:06


VIEW MORE
story-6
Lexus LC500 Convertible Auction: A Preview of Rising Values?

The LC hasn't even disappeared from the Lexus lineup yet, and we're already seeing signs of an explosive market.

By Brett Foote | 2026-04-06 09:25:02


VIEW MORE
story-7
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

Slideshow: comparing the pricings, specs, power, fuel economy, fun-factor, and features of the GX 550 Luxury+ and TX 550h+ Luxury.

By Michael S. Palmer | 2026-03-19 13:44:11


VIEW MORE
story-8
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

Slideshow: 9 best Lexus models you can buy for half price and 1 you should avoid

By Joe Kucinski | 2026-03-19 12:01:07


VIEW MORE
story-9
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

Here's everything you need to know about the latest NX.

By Brett Foote | 2026-03-19 11:56:59


VIEW MORE