A/C not cooling
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Joined: Sep 2014
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2011 e550
A/C not cooling
I have a '11 E550, for the last couple of weeks the A/C has started to not cool, everything seems to be working fine no warning lights but hot or ambient temperature comes out of the vents, I have tried turning of, changing settings (all) but nothing seems to work except turn the car off and start again, once I do that it normally starts and cools perfect....for now!
Has anyone experienced this before, if so, what was it? I am guessing either the clutch or a pressure sensor but I am no A/C expert.
Has anyone experienced this before, if so, what was it? I am guessing either the clutch or a pressure sensor but I am no A/C expert.
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,142
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
I have a '11 E550, for the last couple of weeks the A/C has started to not cool, everything seems to be working fine no warning lights but hot or ambient temperature comes out of the vents, I have tried turning of, changing settings (all) but nothing seems to work except turn the car off and start again, once I do that it normally starts and cools perfect....for now!
Has anyone experienced this before, if so, what was it? I am guessing either the clutch or a pressure sensor but I am no A/C expert.
Has anyone experienced this before, if so, what was it? I am guessing either the clutch or a pressure sensor but I am no A/C expert.
I had this happen once this summer where only very hot air came out from the vents. I revved the engine up and it started blowing cool. I checked the charge and it was fine.
Luckily had an oil change service setup a week later so I told my SA to check on this. He said they found a bad sensor. Where this sensor was I don't know and did not ask. Have not had any problem since.
Senior Member
Joined: Jan 2012
Posts: 313
Likes: 9
From: SoCal
'03 A4 2.0 Stroker, '14 E63 S AMG, '10 E550, '10 S550, '03 C240
I had this happen once this summer where only very hot air came out from the vents. I revved the engine up and it started blowing cool. I checked the charge and it was fine.
Luckily had an oil change service setup a week later so I told my SA to check on this. He said they found a bad sensor. Where this sensor was I don't know and did not ask. Have not had any problem since.
Luckily had an oil change service setup a week later so I told my SA to check on this. He said they found a bad sensor. Where this sensor was I don't know and did not ask. Have not had any problem since.
