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Clicking Noise While Driving Lexus RX300
Last post on Dec 20, 2011 at 9:45 AM
You are in the Lexus RX 300/330/350
What is this discussion about?
Lexus RX 300, Lexus RX 330, Lexus RX 350, SUV
#16 of 20 2001 RX 300 - faint bubbly clicking noise in dash?
Jun 16, 2010 (4:11 pm)
i just purchase use with 86,000 miles, it drives like a dream except for this faint bubbly gurgling click noise from dash while car is driving. i thought i might be the cassette player with something in there but it's coming from inside the dash area. Any help as i dont want to take it to lexus dealership. no warning light come on, and i believe it still makes noise when air conditioner is off.
#17 of 20 Re: 2001 RX 300 - faint bubbly clicking noise in dash? [barbie8]
Jun 16, 2010 (6:41 pm)
Mine has always made a very faint noise (squish-zz-zz-zz) I believe comes from the A/C "reheat" (?) servo. It has never been a problem and it is only barely noticeable when it is completely quiet in the cabin. It doesn't matter if the A/C is on or off, and can even be heard when there is no accessory power. Usually the regular operator of the car is the only one who ever notices it.
I believe it is the (vacume operated) servo that closes and opens the flow of coolant through the heater core in response to changes in the cabin temperature.
#18 of 20 Re: Clicking Noise [wwest]
Feb 12, 2011 (6:57 pm)
I had same situation on my car and problem was the air vantilation switch control with electric motor, which is can able to find under desh. When switching the air flow position electric motor control the vantilation valve inside the aircondition unit, which is inside the main unit. So, can able to find two switch close each other ( top and bottom ).
They also link together I think. For my car, inside the top switch electric motor gear tip was worn out. so, sometime not in the right position make can not contact with other control switch then try to get contact but slip the gear caused noise. So I remove top switch and open the cover then put some very thinn rubber ( about 1mm ) stick top of the electric motor gear tip to make sure gear not to loose or slip. If top switch is working ok the bottom switch no more making the noise.
My cas is right hand drive, so switch is on left hand side behind glove box. You can able to find very easy after turn the air condition on and try to change the vantilation position.
#19 of 20 Re: Clicking Noise [thant]
Feb 20, 2011 (9:37 am)
Simple temporary fix:
Turn the heater to MAX leave it on for 3-4 minutes and turn it off; that will take care of it for days or weeks, when it comes back do the same thing. I know itís not a permanent fix, but it will take care of the annoying noise and keep you about 7 Benjamin in ur pockets.
#20 of 20 Re: Clicking Noise [thant]
Dec 20, 2011 (9:45 am)
TEMPERATURE SERVO MOTOR is the problem. You will eventually have to replace it. It is a costly item to be installed. If you can do it yourself, it would be cheaper.