AC Different Temperatures
Thread Starter
Senior Member
Joined: Oct 2015
Posts: 287
Likes: 24
From: New York
2012 GL350
AC Different Temperatures
My wife informed me a few months ago that the AC wasn't blowing cold. Truck had to go into the dealer for another issue, so I had them investigate. They said it needed an evac and charge, and also did a leak test. AC wasn't ice cold when I got it back, but it was also 90+ degrees, so didn't think too much of it. I've now noticed that the passenger side blows cold, driver side blows warm, and rear blows cool. Any thoughts?
Newbie
Joined: Sep 2023
Posts: 6
Likes: 2
2023 GLE450
mine did this too. There is a software reboot you can do yourself by pushing a combo of buttons on the dash. After I reset mine it works much better but still doesn’t seem to blast out cold air sometimes unless I run down the temp. At dealer now to have this checked because I have bigger issues with transmission on a new GLE450
My wife informed me a few months ago that the AC wasn't blowing cold. Truck had to go into the dealer for another issue, so I had them investigate. They said it needed an evac and charge, and also did a leak test. AC wasn't ice cold when I got it back, but it was also 90+ degrees, so didn't think too much of it. I've now noticed that the passenger side blows cold, driver side blows warm, and rear blows cool. Any thoughts?
MBWorld Fanatic!
Joined: May 2015
Posts: 1,932
Likes: 291
From: Allentown, PA
'08 GL 320 CDI
Same thing happened to mine - when the system is low on coolant, it causes that temp differential - passenger side cooler than the driver's. My Indy said this isn't all that uncommon with older systems. There may be a small/slow leak.
