GadgetRick

So I was riding with no music on--had family in from out of town--and noticed a strange noise coming from behind the dash on the driver's side. Hard to describe but almost a liquid-type noise (although not a liquid) and repetitive. Doesn't happen all of the time but happens frequently. Not loud enough to hear over music or even road noise on a highway.

Almost a swoosh, swoosh with sort of clicking.

Wish I could describe it better.

ALAN553

Make sure it's not coming from behind glove box, servo motors on HVAC know to go bad, clicking is the gears continually turning on flaps. Maybe

GadgetRick

Seems to definitely be coming from behind driver's side.

ALAN553

May want to check parts schematics see if there are any dampers there also

GadgetRick

You know where they might be found online? Not even sure what to look for.

Thanks.

ALAN553

Check any of the online parts sites, look up either HVAC or dashboard and look where the dampers are located to control air flow. That swish and clicking noise sounds like that, go through the manual settings on the system to open and close air flow, dash, vents, windshield, recirc and off and see if the noise changes or goes away.

techrep

Have you just flushed your cooling system ?

GadgetRick

Thanks, I'll have to look into that this week when I've got a bit of time.

GadgetRick

No, that's something I need to do.

techrep

Could be air trapped in the cooling system and you are hearing it slosh around in your heater core... Just an Idea !

chiph9

Also a clogged A/C drain tube, with some condensate sloshing in the ducting.

Chip H.

GRAYM

I get this noise a lot as well, usually goes away over time...seems to sound like something sticking and trying to come undone itself etc....play the music louder is my fix

bkasson

Alan- my clicking noise only happens when I engage the recirc button and A/C. As soon as you
turn off the recirc button the noise goes away. Do you know how to access the dampers and where they are located in the dash??

Thanks,
Bob Kasson

ALAN553

[QUOTE=bkasson;9305531]Alan- my clicking noise only happens when I engage the recirc button and A/C. As soon as you
turn off the recirc button the noise goes away. Do you know how to access the dampers and where they are located in the dash??

Thanks,
Bob Kasson[/QUOTE

There ya go, the recirc flow damper and servo is behind the glove box, this was not a Diy Job for me, something about cpu for airbags behind there....definitely need to d/c the battery...tight in there. My first GX was an 04, took out CD player and I could see the servo continuing to turn after the damper closed, the gears would be clicking. I think I paid Lexus 225 to replace it?

trhs75

I was absolutely convinced there ere mice in my dash because of how it sounded. The way I figured it out was by slapping the dash which would have scared the mice into silence, but the noise remained unchanged.