MVision Posted August 8, 2014 Share Posted August 8, 2014 2004 Vision. No matter what position the knob is in air only comes out the dash vents. The temp control and fan control work fine. I'm assuming a switch or blend door problem of some sort. What's the best way to diagnose this? If it is a blend door type issue, what is the least intrusive way in to the blend door? Done a blend door on a pickup that required removing a lot of the dash....not fun. Probably didn't need those left over screws anyway. Lol. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
wheeler73 Posted August 9, 2014 Share Posted August 9, 2014 Mack has a mode box update kit. Unfortunately you have to remove the whole case. This is a common issue. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.