My 2000 Avalon blows only cold air out of the passenger-side ducts, while the drive side blows nice and hot. The passenger-side center high duct is just slightly cooler than the driver-side one next to it, but the ones on the far side of the dash and by the feet are just cold. Seems like it's letting in the outside air. Moving the passenger heater control has no effect. I checked to make sure the cable from the heater/AC control is connected and it properly moves the lever which attaches to the end of the cable under the dash on the passenger side. Any ideas? Is there some type of electrically controlled actuator that mixes incoming air and air from the heater core/ AC that could be bad? I can't see anything under the dash, so don't even know where something like this might be located I stopped at O'Reilly and NAPA and they were clueless and showed no parts such as this.
My 2000 Avalon blows only cold air out of the passenger-side ducts, while the drive side blows nice and hot. The passenger-side center high duct is just slightly cooler than the driver-side one next to it, but the ones on the far side of the dash and by the feet are just cold. Seems like it's letting in the outside air. Moving the passenger heater control has no effect. I checked to make sure the cable from the heater/AC control is connected and it properly moves the lever which attaches to the end of the cable under the dash on the passenger side. Any ideas? Is there some type of electrically controlled actuator that mixes incoming air and air from the heater core/ AC that could be bad? I can't see anything under the dash, so don't even know where something like this might be located I stopped at O'Reilly and NAPA and they were clueless and showed no parts such as this.
I have the exact same problem as you describe. It happened about 3 months ago, and I have checked all sorts of things but have not found any solution yet. I actually decided to post now and saw your thread. I will follow along with you and offer any solutions I find. My Avalon is also a 2000 model. It has electronic dual climate control. Your Avalon has mechanical temperature controls? If so then I am a little relieved that my problem is probably not with the electronic control unit that my Toyota dealer suggested was the problem @ $1200.00 for the part!
Yes, camry6, my Avalon is the XL and has the mechanical temperature controls.
O.K., that probably rules out my Toyota dealer suggested $1200.00 main control unit. Does your Avalon have dual temperature control (driver and passenger side temperatures controlled separately), or the conventional one temperature system? I'm thinking dual temp. from your original post, but just making sure.
i havent work this issue on a toyota but i just did it on a KIA. thre are cablese, gears move around to open/colse/redirect ducts. over time dust collects and those cables and gears get stuck. so what i did was cleaned it with WD-40 and lubed with lithiam greese. worked perfectly.
The cable connected to each temperature control knob runs to a lever mechanism, which moves smoothly as the knob is rotated. This casues an internal duct to open and close. At least that is what I assume as when I move the knob I can hear what appears to be the internal duct opening and closing.
Yea, I checked out mine a while ago and found that my drivers side and passenger side controls appear to be working the same on both sides. All actuators appear to be responding to the auto climate control temperature settings when I adjusted it up and down. It can't be a serious problem, probably just a stuck or disconnected air diverter somewhere. I am going to buy a service manual for it and look at the exploded view of the air duct system to see what and where everything is happening, or supposed to be happening.
Yea, I checked out mine a while ago and found that my drivers side and passenger side controls appear to be working the same on both sides. All actuators appear to be responding to the auto climate control temperature settings when I adjusted it up and down. It can't be a serious problem, probably just a stuck or disconnected air diverter somewhere. I am going to buy a service manual for it and look at the exploded view of the air duct system to see what and where everything is happening, or supposed to be happening.
The cable to the control unit on the driver side might be loose. Flip out the carpet on the driver side console and see if the cable is still attached to a white hook like on the passenger side. The cable is attached to a black clamp first and then it is hooked to a white lever kinda hook.
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2000 Avalon with only cold air on passenger side
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