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Air con problem with CLK

The heater/air con in my 2006 Mercedes-Benz CLK is either very cold or full-heat, with no in between. As soon as I click the individual control to 'on', (provided the otherside is also 'on') it goes to full heat, not 18 degrees, as per the dial. My garage has dismantled it all and found no fault. Any ideas?

Asked on 16 October 2014 by Toobs

Answered by Honest John
I'd get the car to an air conditioning specialist. Some here: www.honestjohn.co.uk/faq/air-conditioning/
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Much better second attempt at CLK. Goes well, handles well and is comfortable. Attractive looks.
 

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