E-Class Coupe (C207) & Cabrio (A207) 2010-: E250CDI Coupe, E350 Coupe, E350CDI Coupe, E500 Coupe, E550 Coupe [Coupes & Cabriolets]

A/C always comes on in AUTO mode

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Old 02-19-2015, 07:44 PM
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2013 E550 Cabriolet; 2004 CLK500 Cabriolet Designo (sold)
A/C always comes on in AUTO mode

When you put your climate control system in "Auto" it also turns on the A/C, regardless of the temp. This seems to be by design according to the manual, but why? You can then turn the A/C off but not sure of why it would be programmed this way.
Old 02-20-2015, 09:35 AM
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What are your preferences? Setting it on "Auto" and then also having to engage the A/C manually or setting "Auto" and having to disengage the A/C?
With the first option, it would not be considered "Auto".
With the A/C on, the compressor only operates in defrost mode or when the interior temp demands it.
Old 02-22-2015, 11:19 AM
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Originally Posted by NCBob
What are your preferences? Setting it on "Auto" and then also having to engage the A/C manually or setting "Auto" and having to disengage the A/C?
With the first option, it would not be considered "Auto".
With the A/C on, the compressor only operates in defrost mode or when the interior temp demands it.

Ah, this is the key: With the A/C on, the compressor only operates in defrost mode or when the interior temp demands it.

Thanks!

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