I have 2004 GS3 and i just realized that my air will only blow tru the vents. i switched to different modes ( feet , windshield ) and it will not switch. i run auto diagnostic and i got codes

21
24 from my searching its solar sensors ( with is on bc it was getting dark outside so probably that's why i do the codes)

33
43 i know those are the servo motors but with ones

anyone can help me out here ?

 

pm....sent. also please dont forget to search before you post
welcome to the club

 

i seen your DIY post . i just wanted to double check on the servos. Great write up , so what actually driver servo do, i couldn't;t find an answer to that.

 

thanks and drivers servo controls the drivers side of the dual climate zone....

 

When I ran my diagnostics, I got codes 21 (again car was inside, that's why the solar sensor may have tripped), 24 (not sure what this one is) and 31 (Short to ground or power source circuit in Air Mix Damper position sensor circuit). Is code 31 for a servo? How do I know which one? I have clicking sounds on the passenger (glove box) side but this side heats/cools fine. On the driver's side, cooling works great but heating doesn't work well at all (and when it's cold...I love my heat!!). Help please.