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Air condition on 2001 Volvo C70

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Cannot change any function with A/C/ Heat. Replaced the in dashA/C Heat control with no change. Is there a relay or anything that can be checked?
(1) Answer
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you can use a scan tool to see what codes are in the a/c
control unit. your new control unit won't work until it is programmed to your car. there is not much software other than OEM Volvo that will work on this.