Good suggestion. I thought the same originally.
Mine is a single climate control though, not dual climate and I can see the actuator moving when I rotate the temp dial and looking under driver side in-cabin. I didn't take it apart though.
Going to try the battery reset some people have said in...
2015 Ford Mustang GT - original owner.
Similar issues. A/C blows cold passenger side, but warm on drivers side.
$2600 quote from Ford to fix it lol.
Called Customer Service and they said no warranty/assistance available. Might try to call again or do an evac + recharge to see if that holds...