Climate Control Problems
Thread Starter
Member
Joined: Jul 2007
Posts: 231
Likes: 14
From: Frisco, TX
GLE55
Climate Control Problems
I have a brand new GLE 53 and I'm having a couple of issues with the AC. I started the car a couple of days ago and it was blowing hot air, I got the AC to turn on but had to set it at the lowest temp. When I moved it up a degree it started blowing hot air again. I took it to the dealer and by then it seemed to be working ok and they couldn't find anything wrong. Yesterday it was blowing hot air out of the driver side vents and super cold air out of the passenger vents. I went to check it again this morning and it was just blowing hot air again unless I put the temp back down to low and then the AC would come back on. An hour later it seems fine again. The SA even told me they have been seeing a ton of issues with GLE's AC systems. Hoping someone has some kind of similar experience and can shed some light on what may be going on.
Newbie
Joined: Feb 2016
Posts: 10
Likes: 3
2026 GLE53
My 26 GLE53 has done the same thing 3 times now. Unfortunately, it is intermittent and I have not noticed any rhyme or reason for it. An MB tip I read is to take it off of auto and use cool instead. I am vested in this for sure.
Junior Member
Joined: Feb 2015
Posts: 28
Likes: 3
From: NH/FL
13, ML350, 15’ CLS 450,20’ Mercedes GLE450 AWD, 22’ GLE 450
Same issue
22’ GLE450 … have had the same intermittent hot air from AC ports. Only way to override is scroll temp down to max/LO cool setting.Resolves on its own therafter on shut downs .Had service look at twice so far. First time they replaced a temp sensor in roof area by center controls. Made no difference.. Symptoms occurred again therafter. Another trip to dealer. Full AC assessment. Could not find issue.
Suggested same routine…” Don’t use auto setting… just ac and adjust fan and temp setting manually”. Not very assuring!
Thinking that reports of these AC systems being a “ weak link” may continue to have merit. MB however doesn’t seem to be willing to assume any responsibility. Just slipped out of warranty… not looking forward to a post warranty multi $k”s repair possibility. Shakes the confidence.
Suggested same routine…” Don’t use auto setting… just ac and adjust fan and temp setting manually”. Not very assuring!
Thinking that reports of these AC systems being a “ weak link” may continue to have merit. MB however doesn’t seem to be willing to assume any responsibility. Just slipped out of warranty… not looking forward to a post warranty multi $k”s repair possibility. Shakes the confidence.
Member
Joined: Jul 2002
Posts: 80
Likes: 12
From: Cincinnati, Ohio
2024 GLE450e
I have a 2024 GLE450e and occasionally the climate system goes wonky, usually a high fan speed and very little cooling. Dealer couldn’t find anything wrong. What I found works is to: Long press (climate MENU button). This resets the climate control system to automatic/default settings. It includes:
I know we have different cars but you may want to try that next time it happens.
- Turning AUTO mode back on
- Resetting fan speed and airflow distribution
- Returning temperature zones to a standard 72 degrees
- Clearing manual overrides for passenger and rear seats (if you have 4 climate zones)
I know we have different cars but you may want to try that next time it happens.
Junior Member
Joined: Feb 2015
Posts: 28
Likes: 3
From: NH/FL
13, ML350, 15’ CLS 450,20’ Mercedes GLE450 AWD, 22’ GLE 450
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MBWorld Fanatic!
Joined: Jan 2023
Posts: 3,135
Likes: 1,205
GLE 580
You might want to read my old thread here:
https://mbworld.org/forums/gle-class...nger-side.html
This stuck actuator occured after winter. This is only an assumption but I think these blend door actuators get stuck with the heater use in winter and then once spring comes around, you get these issues. Are many of you from places with proper winters?
https://mbworld.org/forums/gle-class...nger-side.html
This stuck actuator occured after winter. This is only an assumption but I think these blend door actuators get stuck with the heater use in winter and then once spring comes around, you get these issues. Are many of you from places with proper winters?
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Thread Starter
Member
Joined: Jul 2007
Posts: 231
Likes: 14
From: Frisco, TX
GLE55
Thanks for the suggestions. I had an appointment to take it back in this morning and cancelled it because the ac seems to be working fine again and they aren't going to be able to find anything. I'm going to have to wait and see if it happens again and try to get to the dealership while it's still acting up. Either way I will try to do the reset. Thank you.
Thread Starter
Member
Joined: Jul 2007
Posts: 231
Likes: 14
From: Frisco, TX
GLE55
I have a 2024 GLE450e and occasionally the climate system goes wonky, usually a high fan speed and very little cooling. Dealer couldn’t find anything wrong. What I found works is to: Long press (climate MENU button). This resets the climate control system to automatic/default settings. It includes:
I know we have different cars but you may want to try that next time it happens.
- Turning AUTO mode back on
- Resetting fan speed and airflow distribution
- Returning temperature zones to a standard 72 degrees
- Clearing manual overrides for passenger and rear seats (if you have 4 climate zones)
I know we have different cars but you may want to try that next time it happens.
Member
Joined: Jul 2002
Posts: 80
Likes: 12
From: Cincinnati, Ohio
2024 GLE450e
You hold it down until the temperature resets to 72, the system switches to auto, and the ‘sync’ is reactivated. If your settings already reflect that change something so you can tell it’s reset. On mine, the fan is always on high when it acts up so I can also tell by the fan noise.
MBWorld Fanatic!
Joined: Jan 2023
Posts: 3,135
Likes: 1,205
GLE 580
You hold it down until the temperature resets to 72, the system switches to auto, and the ‘sync’ is reactivated. If your settings already reflect that change something so you can tell it’s reset. On mine, the fan is always on high when it acts up so I can also tell by the fan noise.
Thread Starter
Member
Joined: Jul 2007
Posts: 231
Likes: 14
From: Frisco, TX
GLE55
The problem with my AC resurfaced today. Start the car and it's blowing hot air. I drove straight to the dealership to prove I'm not stupid or crazy and **** you not as soon as my tires hit the service drive cold air starts blowing out of the vents.
Junior Member
Joined: Sep 2024
Posts: 17
Likes: 2
Had similar weirdness and they swapped a stepper motor today. Also mostly hot air in the back with minimal cold air up front.
From dealer:
ROAD TESTED VEHICLE AND CONFIRMED A/C NOT BLOWING OUT OF CENTER VENTS.
CONNECTED BATTERY CHARGER AND PERFORMED A SHORT TEST. FOUND FAULT FOR BLEND AIR
STEPPER MOTOR M2/5. LOOKED AT ACTUAL VALES AND FOUND MOTOR NOT OPERATING. TESTED
WIRING FOR POWER AND GROUND, FOUND BATTERY VOLTAGE AND GOOD GROUND
CONNECTION. REPLACED STEPPER MOTOR M2/5, PERFORMED TEACH IN AND NORMALIZED ALL
STEPPER MOTORS. CLEARED ALL FAULTS AND ROAD TESTED THE VEHICLE
From dealer:
ROAD TESTED VEHICLE AND CONFIRMED A/C NOT BLOWING OUT OF CENTER VENTS.
CONNECTED BATTERY CHARGER AND PERFORMED A SHORT TEST. FOUND FAULT FOR BLEND AIR
STEPPER MOTOR M2/5. LOOKED AT ACTUAL VALES AND FOUND MOTOR NOT OPERATING. TESTED
WIRING FOR POWER AND GROUND, FOUND BATTERY VOLTAGE AND GOOD GROUND
CONNECTION. REPLACED STEPPER MOTOR M2/5, PERFORMED TEACH IN AND NORMALIZED ALL
STEPPER MOTORS. CLEARED ALL FAULTS AND ROAD TESTED THE VEHICLE
Last edited by rayrevolver; May 13, 2026 at 10:19 PM.
Thread Starter
Member
Joined: Jul 2007
Posts: 231
Likes: 14
From: Frisco, TX
GLE55
Junior Member
Joined: Sep 2024
Posts: 17
Likes: 2
It was 72F yesterday and my wife said she had to set the AC to 60F to keep from sweating. Not sure what the hell is going on, but looks like we need another trip to the dealer. Same today but its almost 80F OAT which is nothing! I had her hold the menu button down for 10 seconds to reset the system. Not sure that helped but it for sure reset the system to 72.
She is royally pissed and this is probably the end of her Mercedes journey. Hopefully we can get can a decent trade value and try something else.
She is royally pissed and this is probably the end of her Mercedes journey. Hopefully we can get can a decent trade value and try something else.
