My 2007 GS 350 has been relatively problem free until now. At 88K, I noticed that my dual climate control system is now blowing out hot air on the passenger side while the driver side is functioning properly blowing cool air. Both driver and passenger side temps were set at 72 degrees with an exterior temp of 70 degrees. In order to balance the temps on both sides, I have to bring the passenger side way down to LO.

Has anyone experienced this issue?

 

it sounds like a sensor problem, your local dealer can fix this. If the vehicle is out of warranty, My gf/s stepdather's 4runner had the same problem, but with both sides, and the mechanic modified it somehow to be stuck on COLD only, no temperature adjustments available.

 

Thanks. I'd like to get the problem fixed instead of modifying or disabling the feature. Do you know how much I'd be looking at to replace a possible sensor?

 

This sounds like an air mix servo issue on the passenger side. Could be stuck or misadjusted (if it's even adjustable) since it seems to work fine if the temp is on LO.

Here's a illustration shown on the lower right of the photo. "Air mix control servomotor RH"

 

Interesting. I hope this is the case, and that it needs adjustment and not replacement. Thanks for the info.

 

Strangely, this problem has seemed to go away on its own. The passenger side climate control is back to normal. Hopefully, that's the end of it.

 

Congrats! Hope you're enjoying your car as much as I do

 

I've had my GS for almost 5 years now, and I am enjoying it as much as I did when it was new. The design of the 4th generation GS is a disappointment for me, so I'll be happy with mine for a while.

 

finally, someone feels the same way i do The only thing i enjoy so far about the 4th gen gs, is the rear passenger controls, now that is NEAT-O!

 

Nope, I agree with those statements too! Not into the 4GS at all.

 

"Air mix control servomotor RH"

exactly

carry out an activation test on them and see how they respond from 0-255 on the data list... if the value doesn't change at all then they are stuck...

using toyota tecstream or toyota intelligent tester only..