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

AC Blowing Hot After Starting Cold

Thread Tools
 
Search this Thread
 
Old May 14, 2025 | 06:25 PM
  #1  
CosmoLexus's Avatar
CosmoLexus
Thread Starter
9th Gear
5 Year Member
 
Joined: May 2016
Posts: 9
Likes: 0
From: FLORIDA
Default AC Blowing Hot After Starting Cold

Hello.

My vehicle is a 2015 IS 350 F-Sport. I am having issues with my AC. The driver side blows hot. The passenger side blows cold then eventually gets hot after maybe 10 minutes of driving. The rear constantly blows cold.

I know this is the dreaded AC servo issue. What I wanted to ask is what could be causing the passenger side to go from cold to hot? Is there an external/internal temperature sensor that triggers it? Something else? Just trying to see if it's something I can address to keep the passenger side cold.

Thanks
Reply
Old May 17, 2025 | 12:56 PM
  #2  
fastordiy's Avatar
fastordiy
Rookie
 
Joined: Mar 2024
Posts: 35
Likes: 2
From: FL
Default

Do you have access to techstream ?
Reply
Old May 18, 2025 | 08:22 AM
  #3  
CosmoLexus's Avatar
CosmoLexus
Thread Starter
9th Gear
5 Year Member
 
Joined: May 2016
Posts: 9
Likes: 0
From: FLORIDA
Default

Hello.

I do not. Can you recommend the best way to acquire it? From what I've read, I need the software, a cable, and a laptop.

I saw the video you posted in a similar thread so I understand how to do the AC servo reset once I get techstream up and running. At least I hope I can do it.

Thanks
Reply
Old May 19, 2025 | 06:37 PM
  #4  
fastordiy's Avatar
fastordiy
Rookie
 
Joined: Mar 2024
Posts: 35
Likes: 2
From: FL
Default

Hello sorry for the delay been busy. I see your Florida what part ?
Also yes purchase the VCI J2534 Cable . Question are you running a computer with apple silicone? Or what type of computer do you use ? (This is important to run the software correctly)

Get back to me and I will try to show you what to do.
Reply
Old May 20, 2025 | 10:30 AM
  #5  
CosmoLexus's Avatar
CosmoLexus
Thread Starter
9th Gear
5 Year Member
 
Joined: May 2016
Posts: 9
Likes: 0
From: FLORIDA
Default

Hello.

I'm in South Florida, in the North Broward area.

I have a Windows 11 laptop. From the research I've done, do I need a 32 bit Windows OS?

Thanks
Reply
Old May 20, 2025 | 07:40 PM
  #6  
fastordiy's Avatar
fastordiy
Rookie
 
Joined: Mar 2024
Posts: 35
Likes: 2
From: FL
Default

Im in Miami, near Miami International Airport area. If you wanna drive down ill reset it for you. But tip me $20 for helping. Anyway yes you need the VCI cable and a 32bit Windows operating system. I got this done through a virtual machine. Have you ever Set-up a virtual Machine ? If you can get your hands on a M1 Processor Apple MacOS computer I Have the UTM system image you want, preloaded with Techstream and ready to go.
Reply
Old May 20, 2025 | 07:54 PM
  #7  
fastordiy's Avatar
fastordiy
Rookie
 
Joined: Mar 2024
Posts: 35
Likes: 2
From: FL
Default

My Tutorial

Last edited by fastordiy; May 20, 2025 at 07:55 PM.
Reply
Old May 23, 2025 | 02:05 PM
  #8  
CosmoLexus's Avatar
CosmoLexus
Thread Starter
9th Gear
5 Year Member
 
Joined: May 2016
Posts: 9
Likes: 0
From: FLORIDA
Default

Hello.

Let me see if I can get a VM with the proper OS. Then I can move forward with the next steps.

Thanks
Reply
Old May 23, 2025 | 03:48 PM
  #9  
fastordiy's Avatar
fastordiy
Rookie
 
Joined: Mar 2024
Posts: 35
Likes: 2
From: FL
Default

Download all the tools you need in the links i left in the video description above , asap. I will be removing that video in a couple of days.

If you can buy a M1 macbook air.(It works perfectly). I will even share the Image file with only you, so it will be plug and play, lol literally.

Last edited by fastordiy; May 23, 2025 at 03:57 PM.
Reply
Old May 23, 2025 | 04:05 PM
  #10  
fastordiy's Avatar
fastordiy
Rookie
 
Joined: Mar 2024
Posts: 35
Likes: 2
From: FL
Default

Also this is the process you wanna flow.
At 19:05 he will show you the process. I recommend you also watch the first couple of minutes.Follow that process like 10 times. Because on the first try it did nothing for me.But after attempting that process 10 times consecutive on the second attempt it moved the servomotor flaps to the cold side.
Reply
Old Jun 10, 2025 | 02:38 PM
  #11  
CosmoLexus's Avatar
CosmoLexus
Thread Starter
9th Gear
5 Year Member
 
Joined: May 2016
Posts: 9
Likes: 0
From: FLORIDA
Default

Hello.

Just wanted to let others know that what @fastordiy posted worked for me. Hopefully it can help others too.

Thanks
Reply
Old Jun 26, 2025 | 10:58 PM
  #12  
ex00's Avatar
ex00
Intermediate
5 Year Member
Liked
 
Joined: Mar 2018
Posts: 422
Likes: 64
From: H
Default

Originally Posted by CosmoLexus
Hello.

I'm in South Florida, in the North Broward area.

I have a Windows 11 laptop. From the research I've done, do I need a 32 bit Windows OS?

Thanks
It doesn't matter what Windows OS version and bit you use. I got it to run on Windows 10 64-bit and Windows 11 64-bit as well. It has no problem running on them and no additional setup as well.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Joshlee73
IS - 3rd Gen (2014-present)
1
Nov 29, 2024 04:43 PM
LouLee
GS - 2nd Gen (1998-2005)
14
Aug 2, 2015 06:52 AM
rsutoratos
RX - 3rd Gen (2010-2015)
2
Jul 9, 2013 09:17 PM




All times are GMT -7. The time now is 12:42 PM.