Question about Lexus Cars & Trucks
2006 Lexus GX470
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Posted on Jan 02, 2017
THe blend door seems to be stuck. When you change settings from defrost to floor air or, vent, the blend door opens and closes directing the air to the place you want it to go to. I have had some success spraying a lubricating oil such as WD40 under the dash on the blend door. You need to get under the dash with a flashlight to locate it. It looks like a flap. Spray it with a couple of shots of the WD40. Go easy on the spraying as you may be inhaling the fumes. Keep the doors and windows open to minimize the fumes. Wait about 1/2 hour and try the A/C functions. (defrost, floor, vent air)
Posted on Mar 09, 2009
You have a vacuum leak. Defrost is the default postion(no Vacuum). Start by finding the small black vacuum line near the heater hoses at the fire wall under the hood.Trace it back, it should go to a square black reservoir . Not totally sure exactly where it is located on this model,shop manual doesn't show a very good pic, but it states to remove wiper arm and pivot shaft to remove it. You will see a second line going from here to intake manifold vacuum port. Make sure you don't have a leak there somewhere.
Posted on Mar 14, 2009
more likely a broken door in hvac case.with car running work controls and watch actuaters operate to locate good luck maybee a little challange
Posted on Aug 30, 2009
first check to see if you have power going to the actuators when you switch the switch to it location if no power replace controller if you have power and no movement from actuators replace actuator. if actuators move remove hvac box and check for broken blend doors.
Posted on Jan 22, 2010
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