Hot Air Coming from A/C Intermittently
Thread Starter
Member
Joined: May 2013
Posts: 174
Likes: 14
From: Main Line, LBK, LBI, etc
19E450A, 16C450W4, 16RRS SC Dynamic, etc
Hot Air Coming from A/C Intermittently
Hi All,
I've got a bit of a weird issue here. A friend of mine has a 2016 E400 4MATIC Coupe, and hot air intermittently blows when the A/C is on. You'll be driving and the car's A/C will be on and then really hot air will just start blowing out of the driver's side vents for a few seconds — maybe 5-10. Then, a few minutes later, the passenger side may do the same, with the driver's side blowing cold. It's just completely random, but it is very annoying to have hot air randomly start blowing when the A/C is on and blowing cold (e.g. when cooling the car or keeping it cool).
Any ideas on how to fix this, or what's going on? The dealer has thus far been not very helpful.
Thanks
I've got a bit of a weird issue here. A friend of mine has a 2016 E400 4MATIC Coupe, and hot air intermittently blows when the A/C is on. You'll be driving and the car's A/C will be on and then really hot air will just start blowing out of the driver's side vents for a few seconds — maybe 5-10. Then, a few minutes later, the passenger side may do the same, with the driver's side blowing cold. It's just completely random, but it is very annoying to have hot air randomly start blowing when the A/C is on and blowing cold (e.g. when cooling the car or keeping it cool).
Any ideas on how to fix this, or what's going on? The dealer has thus far been not very helpful.
Thanks
Last edited by cjaredscott; Jul 24, 2017 at 01:27 PM.
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
This is a warranty issue. You have to insist your dealer fix this problem! There is no such thing that the dealer cannot fix the problem. I would get MB involved in this.
Thread Starter
Member
Joined: May 2013
Posts: 174
Likes: 14
From: Main Line, LBK, LBI, etc
19E450A, 16C450W4, 16RRS SC Dynamic, etc
Hasn't been resolved. Also, the rain sensing wipers randomly go on when there's not water (perfectly sunny days), and if it was raining and it stops, they start going really fast.
Thread Starter
Member
Joined: May 2013
Posts: 174
Likes: 14
From: Main Line, LBK, LBI, etc
19E450A, 16C450W4, 16RRS SC Dynamic, etc
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,632
From: North Scottsdale, AZ
'71 Pinto
May be a coincidence that both rain/light & humidity temperature sensors are located @ overhead control panel nevertheless, starting point in discussion to request MB intervention https://mercedes-benz.custhelp.com/
Thread Starter
Member
Joined: May 2013
Posts: 174
Likes: 14
From: Main Line, LBK, LBI, etc
19E450A, 16C450W4, 16RRS SC Dynamic, etc
May be a coincidence that both rain/light & humidity temperature sensors are located @ overhead control panel nevertheless, starting point in discussion to request MB intervention https://mercedes-benz.custhelp.com/
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Newbie
Joined: Jul 2012
Posts: 3
Likes: 0
2011 mercedes e 350
Nope never got it resolved. Spoke to a foreman at the benz dealer and even he said he couldnt figure it out.bought a new compressor and its been sitting in my garage for almost a year.i hardly use the car.2012 with only 3000 miles on it.
Super Member
Joined: May 2012
Posts: 781
Likes: 72
From: Ohio
2017 E400 Coupe & 2018 GLC43
Hi All,
I've got a bit of a weird issue here. A friend of mine has a 2016 E400 4MATIC Coupe, and hot air intermittently blows when the A/C is on. You'll be driving and the car's A/C will be on and then really hot air will just start blowing out of the driver's side vents for a few seconds — maybe 5-10. Then, a few minutes later, the passenger side may do the same, with the driver's side blowing cold. It's just completely random, but it is very annoying to have hot air randomly start blowing when the A/C is on and blowing cold (e.g. when cooling the car or keeping it cool).
Any ideas on how to fix this, or what's going on? The dealer has thus far been not very helpful.
Thanks
I've got a bit of a weird issue here. A friend of mine has a 2016 E400 4MATIC Coupe, and hot air intermittently blows when the A/C is on. You'll be driving and the car's A/C will be on and then really hot air will just start blowing out of the driver's side vents for a few seconds — maybe 5-10. Then, a few minutes later, the passenger side may do the same, with the driver's side blowing cold. It's just completely random, but it is very annoying to have hot air randomly start blowing when the A/C is on and blowing cold (e.g. when cooling the car or keeping it cool).
Any ideas on how to fix this, or what's going on? The dealer has thus far been not very helpful.
Thanks
Newbie
Joined: Sep 2013
Posts: 1
Likes: 0
2011 E550 Cabriolet
I have a similar problem with 2011 E550 Cab. Drive a short trip (5 minutes) turn off. 45 minutes later when going again AC blows hot for some time. Eventually (after you're soaking wet) AC starts blowing cold air. Not an infrequent problem. Car no longer under warranty.
