DIY on changing servo motors
Driver School Candidate
Joined: Apr 2006
Posts: 18
Likes: 0
From: NEW JERSEY
Servo
Thanks for the post I just found out today! that mines went out, what a dammm shame its always something, everyday all day it never ends.
Now back to the bank to draw some more money out of my pocket.
Great Job!
Now back to the bank to draw some more money out of my pocket.
Great Job!
Lead Lap
Joined: Apr 2002
Posts: 499
Likes: 7
From: California
Thank-you very much for the DIY, 1st I replaced the mode servo, but it turned out to be the cooling servo. The back screw to the cooling servo is a PITA! Shoulda replaced both at same time as you recommended. So it seems I have a very used mode servo w a broken corner (where screw goes thru). If anyone wants it they can have it...I'm sure it'll hang on w 3 screws. I have to get back in there and fix the glove box light one of these days.....
Thank-you very much for the DIY, 1st I replaced the mode servo, but it turned out to be the cooling servo. The back screw to the cooling servo is a PITA! Shoulda replaced both at same time as you recommended. So it seems I have a very used mode servo w a broken corner (where screw goes thru). If anyone wants it they can have it...I'm sure it'll hang on w 3 screws. I have to get back in there and fix the glove box light one of these days.....
Driver School Candidate
Joined: Apr 2002
Posts: 3
Likes: 0
From: Kentucky
Does the Air Mix servo have multi-stop positions?
I was wondering it the air mix servo has multiple stops or just goes from a beginning to end in a two position movement. My is currently going full from beginning to end only at the highest temperature setting of 84-85. There is no movement from 65-83 degrees. Just wondering if this is normal of sign of a bad servo.
This is in a 1999 GS300.
Thanks
This is in a 1999 GS300.
Thanks
sorry, i skimed thru the thread only.
is this the motor that moves the vents so it goes to body/feet/body+feet?
if so, when it fails, did yours make noises? my mom's rx300 makes loud buzzing noises
is this the motor that moves the vents so it goes to body/feet/body+feet?
if so, when it fails, did yours make noises? my mom's rx300 makes loud buzzing noises
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Lead Lap
Joined: Apr 2002
Posts: 499
Likes: 7
From: California
I was wondering it the air mix servo has multiple stops or just goes from a beginning to end in a two position movement. My is currently going full from beginning to end only at the highest temperature setting of 84-85. There is no movement from 65-83 degrees. Just wondering if this is normal of sign of a bad servo.
This is in a 1999 GS300.
Thanks
This is in a 1999 GS300.
Thanks
Lead Lap
Joined: Apr 2002
Posts: 499
Likes: 7
From: California
Theres two that generally fail..the one you are talking about is the mode servo and yes, when they fail they make buzzing squeeking noises.
I was wondering it the air mix servo has multiple stops or just goes from a beginning to end in a two position movement. My is currently going full from beginning to end only at the highest temperature setting of 84-85. There is no movement from 65-83 degrees. Just wondering if this is normal of sign of a bad servo.
This is in a 1999 GS300.
Thanks
This is in a 1999 GS300.
Thanks
x2 but there are actually 3 that generally fail....the third is drivers servo funny the air recirculation servo NEVER seems to fail i wonder why
Lexus Champion
Joined: Aug 2007
Posts: 2,886
Likes: 3
From: TX
Didnt want to start a new thread, So I'll post here. I am getting a noise from behind my stereo. It sounds like if a cell phone was stuck somewhere and vibrating. It will do it randomly. Its deffinetly NOT coming out of the glovebox. I took out the ac vents and can feel some vibrating there. Could this be a faulty servo? Or is it something else?
it's a faulty servo motor. you can take the actual electric motor out and re-adjust the arm and then calibrate it again to see if it works, or replace the electric motor inside, or replacement the entire servo assembly.
don't try to force the arm into another position with the electric motor inside; you will snap the gears inside.
don't try to force the arm into another position with the electric motor inside; you will snap the gears inside.
Pole Position
Joined: Jul 2002
Posts: 309
Likes: 0
From: Texas
Thanks!
Thanks for the great write up man! This I hope will solve my cricket noise problems! And just FYI, some Toyota dealerships can get Lexus parts for a lot cheaper then what Lexus will charge... I will do this DIY asap. 