Air Con/heating did not start this morning

Russell1813

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Feb 28, 2018
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Your Mercedes
180 2008 1800
Hi
My car was covered in snow and ice this morning, the car started straight away but the air con/heating would not work, any ideas
 

Naraic

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Your Mercedes
2005 CL500.
What car do you have?
 

LostKiwi

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Aug 25, 2006
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Location
Midlands / Charente-Maritime
Your Mercedes
'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
From what I recall if ambient temperature is too low the AC will switch off.
 

L John

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Nov 24, 2013
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Location
UK
Your Mercedes
W204 C350 Petrol Elegance
The heater fan also wont start until the engine warms up a bit when it's on the auto setting but it should run straight away if you set it to screen clear or if it's set a manual fan speed.
Fan speed is also reduced automatically when linguatronic is being used.
 

Submariner1

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Location
Windsor Berkshire
Your Mercedes
CL500 2009 5.5
Hi
My car was covered in snow and ice this morning, the car started straight away but the air con/heating would not work, any ideas
If you have auto AC Thermotronic, code 581 set on auto fan it “appears” not to be working until the engine warms up circa 1-2 miles. If you lisen feel very carefully it is actuslly worki g just a minute amout, sufficient to stop any fogging increasing.
You can force it by going to a manual fan setting ... but its pointless to do so.
 


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