AC Problems
Thread Starter
Member
Joined: Jul 2022
Posts: 157
Likes: 46
GLS 450 (2022), EQE SUV 350 (2025). GLS 450 (2007)
AC Problems
Hi Folks. I'm driving across the country in my 2022 GLS 450 and yesterday I drove from St. Louis to Atlanta. Unfortunately, along the way I could not get my AC to put out any cold air. I mean it was hotter in the car than outside. No matter how I set the HVAC switches, no cold air would come out. I restarted the car a few times and that didn't help. Needless to say it was a hot and loud drive as we drove 600 miles with the windows partly open.
So I made an appointment with the local MB dealer here in Atlanta, and of course when I started the car this AM to drive it there the AC worked just fine! The dealer also ran checks on the AC and reports that nothing was wrong. Can anyone shed some light on what the problem might be? I swear that I had the AC switches set correctly and this is not operator error!! Thanks for any advice.
So I made an appointment with the local MB dealer here in Atlanta, and of course when I started the car this AM to drive it there the AC worked just fine! The dealer also ran checks on the AC and reports that nothing was wrong. Can anyone shed some light on what the problem might be? I swear that I had the AC switches set correctly and this is not operator error!! Thanks for any advice.
Member
Joined: Sep 2022
Posts: 147
Likes: 36
From: Houston
2021 GLS 450 & 23 GLS 450. Have a Holden Commodore, Jeep, truck, and more
Verify the rear seat settings. I had a similar situation and it was because somehow the 3rd row was set to 60 or low and was demanding all of the cold air. Apparently the AC is set to prioritize the rear to keep temp. Seems odd. The service writer mentioned to me that sometimes the "case" goes bad. When I pried to find out if he meant blend doors or something else and he just said they have to replace the entire case because it goes bad. I hope they can get it resolved for you, Mine has never done it again so I cannot say for certain mine is "fixed"
Super Member
Joined: Apr 2011
Posts: 541
Likes: 231
2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
Newbie
Joined: Jun 2025
Posts: 1
Likes: 0
GLE450
Did you get a resolution to you
Hi Folks. I'm driving across the country in my 2022 GLS 450 and yesterday I drove from St. Louis to Atlanta. Unfortunately, along the way I could not get my AC to put out any cold air. I mean it was hotter in the car than outside. No matter how I set the HVAC switches, no cold air would come out. I restarted the car a few times and that didn't help. Needless to say it was a hot and loud drive as we drove 600 miles with the windows partly open.
So I made an appointment with the local MB dealer here in Atlanta, and of course when I started the car this AM to drive it there the AC worked just fine! The dealer also ran checks on the AC and reports that nothing was wrong. Can anyone shed some light on what the problem might be? I swear that I had the AC switches set correctly and this is not operator error!! Thanks for any advice.
So I made an appointment with the local MB dealer here in Atlanta, and of course when I started the car this AM to drive it there the AC worked just fine! The dealer also ran checks on the AC and reports that nothing was wrong. Can anyone shed some light on what the problem might be? I swear that I had the AC switches set correctly and this is not operator error!! Thanks for any advice.
Trending Topics
Thread Starter
Member
Joined: Jul 2022
Posts: 157
Likes: 46
GLS 450 (2022), EQE SUV 350 (2025). GLS 450 (2007)
Nothing was done to make any repairs and the issue has never returned. I think that maybe the rear temp was set very high due to inadvertent contact with the buttons, and this was the sole (silly) cause.
MB World Stories
The Best of Mercedes & AMG
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
MBWorld Fanatic!
Joined: Oct 2009
Posts: 6,970
Likes: 2,180
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
