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2008 C300 - AC/Heat Not Blowing..Plz Help
Thread Starter
Junior Member
Joined: Jun 2008
Posts: 16
Likes: 0
2008 Mercedes C300 Sport
2008 C300 - AC/Heat Not Blowing..Plz Help
We had just had a snow storm the past few days - Approx 18 inches of snow and when I went into my car today to turn on the heat, Nothing blows out of the vents.. All The lights and diagrams light up but nothing blows out on heat or ac? Is it possible that something has froze causing it to not turn on or what else could it be? and how can i fix it.. Any Help would be greatly appreciated thanks..
Super Member
Joined: Sep 2007
Posts: 978
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From: Essex County, NJ
2011 E350 Sport 4Matic - P2 & Drivers Assist / 2010 C300 Sport 4Matic - P2 / 2013 Porsche Cayenne S
Forgive me for asking the obvious but did you wait for the car to warm up a bit ? Benzes don't blow cold air into the passenger compartment when it is cold outside. The airflow will not start until your engine is warm enough (somewhere between 50-60 degrees if you look at the gauge on the dash) for the warm air to start being pumped into the cabin.
Thread Starter
Junior Member
Joined: Jun 2008
Posts: 16
Likes: 0
2008 Mercedes C300 Sport
Thats ok and YES the vents are open you cant even hear the blower coming on... Could something like the blower freeze? Seems strange it happened after there was almost two feet of snow i was driving through?
Super Member
Joined: Sep 2007
Posts: 978
Likes: 3
From: Essex County, NJ
2011 E350 Sport 4Matic - P2 & Drivers Assist / 2010 C300 Sport 4Matic - P2 / 2013 Porsche Cayenne S
30 minutes is plenty. Both of my cars start blowing hot air after about 5-7 minutes every morning on my way to work. Since you can hear the fans going I can't even suggest to you that it's a fuse. I don't think its something that we could diagnose. Your best bet would be to take it to the dealer and see what they can find.
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Super Member
Joined: Sep 2007
Posts: 978
Likes: 3
From: Essex County, NJ
2011 E350 Sport 4Matic - P2 & Drivers Assist / 2010 C300 Sport 4Matic - P2 / 2013 Porsche Cayenne S
Sorry about that. In that case it could be something as simple as a fuse needing to be replaced. Dealership can take care of that for you in about 5 minutes. Just take it in to get a definite diagnosis regarding this issue.
MBWorld Fanatic!
Joined: Mar 2008
Posts: 3,714
Likes: 56
From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
If your car was outside , snow & ice may have frozen your fan then blown the fuse when it was not allowed to turn. I would look at your fan.( under the bonnet.
Senior Member
Joined: Feb 2008
Posts: 300
Likes: 2
From: Toronto
2008 c300
Its been a common problem with melting snow building up in the heater box and freezing the fan solid. Try and get the car somewhere warm and let it idle. The fan may restart as the heater box thaws.
Good luck
Good luck
MBWorld Fanatic!
Joined: Feb 2004
Posts: 3,986
Likes: 6
From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
We had just had a snow storm the past few days - Approx 18 inches of snow and when I went into my car today to turn on the heat, Nothing blows out of the vents.. All The lights and diagrams light up but nothing blows out on heat or ac? Is it possible that something has froze causing it to not turn on or what else could it be? and how can i fix it.. Any Help would be greatly appreciated thanks..
Release the spring clips at each end of the back edge along the firewall. You can then tilt the box forward and look in at the vertical squirrel cage blower.
MBWorld Fanatic!
Joined: May 2008
Posts: 2,824
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From: Long Island, New York
2013 C300 Sport Black Darth V3.0
Common problem with early 08 W204's the box the blower is mounted in has no drain holes and the water builds and finally freezes the motor in place which then burns out trying to turn. Go to your AD and they will fix it like they did mine. Happened on the coldest day in winter 09 to me, was not a fun drive to and from work that day.
Member
Joined: Sep 2009
Posts: 132
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2006 C230 6spd > C300 4Matic
I just had this happen to me, the heat works okay now I'm just guessing that it was frozen =[, you think I should have it replaced also?
Oh, and now my drivers window won't auto-close.
Oh, and now my drivers window won't auto-close.
Last edited by IllusionX; Dec 31, 2010 at 06:53 AM. Reason: Forgot Oh, and now my drivers window won't auto-close.
MBWorld Fanatic!
Joined: Aug 2004
Posts: 1,367
Likes: 3
From: MA
'24 Porsche Macan
This thread was about no heat. Maybe you posted in the wrong one?
MBWorld Fanatic!
Joined: Aug 2004
Posts: 1,367
Likes: 3
From: MA
'24 Porsche Macan
MBWorld Fanatic!
Joined: May 2008
Posts: 2,824
Likes: 1
From: Long Island, New York
2013 C300 Sport Black Darth V3.0
MBWorld Fanatic!
Joined: Oct 2002
Posts: 4,975
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From: Cincinnati
2010 E350 4Matic
Read the post above it
"I just had this happen to me, the heat works okay now I'm just guessing that it was frozen =[, you think I should have it replaced also?
Oh, and now my drivers window won't auto-close. "
"I just had this happen to me, the heat works okay now I'm just guessing that it was frozen =[, you think I should have it replaced also?
Oh, and now my drivers window won't auto-close. "
Last edited by MBNUT1; Dec 31, 2010 at 11:52 PM.
Thread Starter
Junior Member
Joined: Jun 2008
Posts: 16
Likes: 0
2008 Mercedes C300 Sport
I took off te battery cover like suggested and opened the blower and gave it a little spin which freed it up now works..thanks guys.. Still bringing it to the dealer though .. At least i have heat till the
MBWorld Fanatic!
Joined: Aug 2004
Posts: 1,367
Likes: 3
From: MA
'24 Porsche Macan
Newbie
Joined: Feb 2011
Posts: 1
Likes: 0
From: Stratford
Mercedes c300
08 MB C300 Heat not working
rock632 had same problem back in January.
Its 15 degrees outside, turn on my MB to warm it up. Heat does not go one. Lights light up on the controls, but nothing.
Has anyone else had this problem? Out of warranty and dont know what to expect from MB Service.
Newbie
Joined: Nov 2011
Posts: 1
Likes: 0
2008 C300
2008 C300 Blower Motor failure
My blower motor failed yesterday (PN 2048200208). I had the problem diagnosed at the dealer in Mechanicsburg, PA today and the diagnosis is burned out blower motor. As you know the internet already published the fact that a missing blower housing drain hole causes this problem in early 2008's. The problem was fixed by MB later in the year but no recall was ever issued.
My c300 has 68000 miles on it and I found out that neither the dealer nor MB really care about my problem. I talked to both of them on the phone. At MB I had a very stressed, irate and unfriendly female on the phone who felt bothered and told me to call the service manager at the dealership. The dealership service manager told me that the car is out of warranty.
Neither of them seems to understand that consumers buy cars with good quality reputation for reasons of quality, trouble free operation and longevity.
The bill is 460 bucks. I'll get it fixed and change brands ...
My c300 has 68000 miles on it and I found out that neither the dealer nor MB really care about my problem. I talked to both of them on the phone. At MB I had a very stressed, irate and unfriendly female on the phone who felt bothered and told me to call the service manager at the dealership. The dealership service manager told me that the car is out of warranty.
Neither of them seems to understand that consumers buy cars with good quality reputation for reasons of quality, trouble free operation and longevity.
The bill is 460 bucks. I'll get it fixed and change brands ...
Last edited by csl2134; Nov 9, 2011 at 01:56 PM.
