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Old 02-28-09, 09:43 PM   #1
djpolak
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#31 COOLING SERVO. What does it exactly do. My every now and them make noise ( like it wants to move back and forth) even if climate controls are off.
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Old 03-02-09, 09:49 AM   #2
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#31 COOLING SERVO. What does it exactly do. My every now and them make noise ( like it wants to move back and forth) even if climate controls are off.
like a hard drive noise on a comp? mine does this or used to when i started it up

cooling servo lets car go into hot/cold mode. besides the noise what kinda problems u having?
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Old 03-23-09, 12:56 PM   #3
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well im still having issues...
new servos (done twice once with used servos and once with new ones) and i picked up a used climate control assy off ebay from a member on here actually thanks shawnberry
although his is in great condition compared to mine (all his bulbs work) it still didnt fix my issues...

so i found out a buddies shop picked up a lexus electrical specialist and im gonna take it to him
i think i'm gonna end up finding out i didnt install the servos right or something stupid! will update again l8r
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Old 05-06-09, 01:15 PM   #4
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how much would this service cost, thats to much diy for me?
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Old 05-06-09, 02:07 PM   #5
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hahaha i promise it really is simple. i think (and im speaking from what they quoted me) labor is like 3-4 hours for both + plus parts so i think that would be like 300-400 in labor and like 300 in parts= so roughly 600-700....thats why i tackled this myself. it didn't take me but like 2 hours MAYBE. for me it was worth trying myself before dumping that kinda money to the dealer
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Old 07-02-09, 08:34 PM   #6
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thanks for the write up.. this will help me
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Old 07-02-09, 10:06 PM   #7
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thanks for the write up.. this will help me
your welcome....good im glad. if you need anything just ask
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Old 07-15-09, 12:24 PM   #8
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Great writeup - but did you figure out what the problem was after replacing the servos (post #45)? I didn't see a resolution discussed, and I'd hate to replace mine and end up with them not working properly .
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Old 07-16-09, 05:49 AM   #9
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good write the noise we here that sounds like we got a mouse running around inside our ac vents, will replacing the mode servo fix this?



off topic: my mode servo broke on my 03' RX300 didnt know how to fix it but maybe I can look it up in the shop manuals.
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Old 07-18-09, 02:55 PM   #10
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good write the noise we here that sounds like we got a mouse running around inside our ac vents, will replacing the mode servo fix this?



off topic: my mode servo broke on my 03' RX300 didnt know how to fix it but maybe I can look it up in the shop manuals.
A mouse running around inside the ac vent/cd changer area is a very good description of what I am hearing when first starting my GS after it has not run for very long. Strangely I was a little low on coollant and added some and the noise has gone away. It only happens sporadically, the ac blows cold air on both sides and it blows hot air on both sides. Not sure, if it ends up being a servo I will definitely change it myself and save the money but I am going to change it when it stops working, I can deal with the "mouse" noise as long as everything is working well.
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Old 07-18-09, 06:24 PM   #11
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A mouse running around inside the ac vent/cd changer area is a very good description of what I am hearing when first starting my GS after it has not run for very long. Strangely I was a little low on coollant and added some and the noise has gone away. It only happens sporadically, the ac blows cold air on both sides and it blows hot air on both sides. Not sure, if it ends up being a servo I will definitely change it myself and save the money but I am going to change it when it stops working, I can deal with the "mouse" noise as long as everything is working well.
as i said in other post....if u hearing the mouse noise it is def a servo. mine would come on sometimes, go away, come back etc etc till i got annoyed enough to change it
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Old 07-18-09, 02:02 PM   #12
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Great writeup - but did you figure out what the problem was after replacing the servos (post #45)? I didn't see a resolution discussed, and I'd hate to replace mine and end up with them not working properly .
yes, the gear on my ac box is broke (the white box the servos attach to) i will fix it by replacing the box when i do my interior tan to black conversion

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good write the noise we here that sounds like we got a mouse running around inside our ac vents, will replacing the mode servo fix this?

off topic: my mode servo broke on my 03' RX300 didnt know how to fix it but maybe I can look it up in the shop manuals.
thanks and yes it will.....im fixing to tackle my drivers side which is annoying me now

no your not off topic....as far as i know the rx uses the same servos we do and they are JUST as prone to the problem as the gs is
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Old 08-06-09, 03:38 PM   #13
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Was here to ket a handle on the servo stuff that's been talked about because I've had the problem for...say 3 years and was hoping it would just stop on its own.
I guess I was in a dream.
Anyhow...the clicking noise is actually training me for the loony house.

It seems that there are lots of assumptions as to which one it is and what it's called but
we all seem to have it.

To get rid of my noise..I turn the a/c on and turn the temp knob to HOT. This stops the clicking. Then after a few min...I slowly turn the temp cooler unit the clicking starts again. This is usually around...81 so I turn it up to 82 and no more noise.
Now....which "servo" is to be changed/fixed? thanks.

I also read that some are having what's considered a mouse like noise. For me it's like
it I hear water sloshing around. Real faint but it's a sound of also like it's chugging along.
clues anyone?
thanks a heap
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Old 08-07-09, 08:14 AM   #14
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Originally Posted by MarkG2000 View Post
Was here to ket a handle on the servo stuff that's been talked about because I've had the problem for...say 3 years and was hoping it would just stop on its own.
I guess I was in a dream.
Anyhow...the clicking noise is actually training me for the loony house.

It seems that there are lots of assumptions as to which one it is and what it's called but
we all seem to have it.

To get rid of my noise..I turn the a/c on and turn the temp knob to HOT. This stops the clicking. Then after a few min...I slowly turn the temp cooler unit the clicking starts again. This is usually around...81 so I turn it up to 82 and no more noise.
Now....which "servo" is to be changed/fixed? thanks.

I also read that some are having what's considered a mouse like noise. For me it's like
it I hear water sloshing around. Real faint but it's a sound of also like it's chugging along.
clues anyone?
thanks a heap
I got the same problem on my new RX and my GS. It's air in the coolant system I think. I can "burp" the sytem and it'll be solid for a few days but always comes right back
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Old 08-07-09, 03:23 PM   #15
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Quote:
Originally Posted by MarkG2000 View Post
Was here to ket a handle on the servo stuff that's been talked about because I've had the problem for...say 3 years and was hoping it would just stop on its own.
I guess I was in a dream.
Anyhow...the clicking noise is actually training me for the loony house.

It seems that there are lots of assumptions as to which one it is and what it's called but
we all seem to have it.

To get rid of my noise..I turn the a/c on and turn the temp knob to HOT. This stops the clicking. Then after a few min...I slowly turn the temp cooler unit the clicking starts again. This is usually around...81 so I turn it up to 82 and no more noise.
Now....which "servo" is to be changed/fixed? thanks.

I also read that some are having what's considered a mouse like noise. For me it's like
it I hear water sloshing around. Real faint but it's a sound of also like it's chugging along.
clues anyone?
thanks a heap
temp servo but i suggest changing both while your in there

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Originally Posted by JiBBeL View Post
I got the same problem on my new RX and my GS. It's air in the coolant system I think. I can "burp" the sytem and it'll be solid for a few days but always comes right back
rx's and gs share the same servo problem. its not a coolant issue....its DEF a servo problem
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