C300 AC not working - Mercedes-Benz Forum

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post #1 of 5 (permalink) Old 06-18-2011, 07:48 PM Thread Starter
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C300 AC not working

My 2008 C300's AC quit working this spring. The shop said everything looks good including the system being charged properly. Right now the driver's side blows 75 degree air while the passenger side blows 85 degree air. Neither side works but for some reason the passenger side is much warmer. The shop says they will need to remove the entire dash to look at the "blend door" which will be 10 hours of labor. Has anyone experienced a similar problem and had any luck resolving it?
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post #2 of 5 (permalink) Old 08-01-2013, 09:39 AM
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Ahh Crap,
I'm having the same issue, please let me know if you get some reply from anyone.
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post #3 of 5 (permalink) Old 08-03-2013, 07:55 PM
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A/C compressor issues can be pretty common, I have replaced many. The dash is not the first thing to take apart so don't listen to some crappy independent shop. The pressures have to be checked to see if the compressor is working. You can do a lot with the scan tool that we use at the dealer, it can check pressures and also check the blend door positions. Where are you located?
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post #4 of 5 (permalink) Old 10-02-2013, 09:04 AM
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I'm in Montreal, Canada. Can I buy this tool from somewhere?
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post #5 of 5 (permalink) Old 10-02-2013, 04:04 PM
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You can - it's not genuine but it does the same job.
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