Lexus Air Conditioning Servo Repair and Cleaning Guide
ฝัง
- เผยแพร่เมื่อ 8 ธ.ค. 2016
- How to clean malfunctioning air conditioning/heating system servos on a 98-05 Lexus GS or Toyota Aristo, JZS160, JZS161, or UZS160 chassis.
--------------------------------------------------------------------------------
Parts Used
--------------------------------------------------------------------------------
No parts required, only cleaning!
--------------------------------------------------------------------------------
Special Tools Used
--------------------------------------------------------------------------------
Cleaning Swabs: amzn.to/2evXNwr
Stubby Screwdriver: amzn.to/2g8W14M
JIS Screwdrivers: amzn.to/2g8RSOe
--------------------------------------------------------------------------------
Social Media and Contact
--------------------------------------------------------------------------------
For business inquiries: redonkilaus@gmail.com
redonkilaus
--------------------------------------------------------------------------------
Notices
--------------------------------------------------------------------------------
Legal disclaimer: Our videos are for educational purposes only. We will not be held liable for any loss or damage incurred as a result of any content communicated on this TH-cam page.
By using the Amazon links in video descriptions you are helping support this channel. Thank you all for watching! - ยานยนต์และพาหนะ
![ความรักของยักษ์เขียว (ทศกัณฐ์) - เดี่ยว ไออุ่น [OFFICIAL MUSICVIDEO 4K]](http://i.ytimg.com/vi/yCCy-QVHqK8/mqdefault.jpg)
Great video! Cleanly made and to the point, very efficient and accurate. Included a wise warning, too... about the air bag! Cleaned both of my servos and all is quiet now. Well done, thanks.
Glad the video helped, and thanks for watching!
Wonderful, I did it on my 2000avalon. Erased the clicking sound on both driver and passengers side successfully.
Thanks!!
Glad you got your Avalon working properly again! Thanks for watching!
Thank you for a concise video. My 98 GS 300 is clicking constantly and the temp is hard to control so ill be doing this soon!
Thank you for watching!
Your video has been extremely helpful. Thank you!
Thank you for watching!
You have the best gs videos. Please keep it up. I need to do the number 2 caster bushings arm bushings. I have had tools and was hoping your going to do those next. Maybe even a brake job too. Rotor replacement and pads. Just hoping. Keep it up please!
The No. 2 Caster Arm bushings will be done at some point, as they are beginning to crack on my car, so stay tuned for that video sometime in the future. The brakes will also be done, though I can't speak to when since the pads were replaced a short time ago. Thanks for watching!
The one on Toyota is very similar too. Mine is now having clicking noise now . Thanks for the video uploaded here . I can confirm it can be the same issue
This type of issue replicates itself across almost all modern vehicles - just something everyone needs to be cognizant of. Thanks for watching!
Great video. The tip about marking the motor is key @ 7:35. Otherwise you could end up wasting a ton of time like I did putting it in backwards and having the motor rotating in the wrong direction. Great video all in all!
Thank you for watching - glad the video helped!
thanks for the video. I have same servo and i tested the motor and it is working. I also cleaned all the grease and did not put any grease for the sake of testing but for some reason, it is not working. I am puzzled what could be the issue? any advise is appreciated. thx
Thank you so much it’s great video 🌹🌹🙏🙏
Thank you for watching!
Great videos by the way on the gs’s. I have been hearing noise like my ball joints or stabilizer tensioner ?with my 2001 gs300 passengers side it makes a rattling noise when I hit bumps on the road while driving. I’ve replaced upper control arm and lower ball joints and tie rods but the noise is still their but not as much. Any thoughts.
I've had strut mounts (the upper mount with the integrated bearing) make a rattling noise on other Toyotas, sort of like a muffled marbles in a can sound over rough roads and bumps. I've heard of occasional issues with the mounts on the GS, but not sure if that's what's going on with yours - you could try lubricating to see if they are the issue and then replace as necessary. Mine has a light clunk currently from under the floorboards, but I believe I've narrowed it down to the caster arms, which I will replace once the temperature has dropped here in Arizona (still almost 100 degrees most days). Those are a very well known and documented wear item, so you should check the bushings in yours as well. Hope that helps you narrow it down a bit, and thanks for watching!
My ac started to blow warm air and I’m not sure why. I noticed the compressor is engaging so I bought ac pro but the gauge was brought to red upon immediate install. I also notice the modes aren’t switching..fans can increase but no modes work. Front vent or rent vent mode don’t switch but the indicator lights come on. I’m thinking that’s affecting the a/c button but I do hear a sound shift upon pressing the A/C button. What could it be?
Also A/C heater never worked, was stuck on freezing cold.
AWESOME!!AWESOME!!!
Thanks for watching!
Hey bro! Nice knowledge and i really wanna how to take out these motors. I got these three motors totally new. Just wanna know how to replace them. Because i was little scared after knowing about the airbag thing.
As long as you disconnect the battery and wait about 15 minutes before disconnecting the airbag, you shouldn't have any issues with that part. This job isn't awful, but the passenger's side of the car is very tight to replace one of the servos and it takes quite a bit of finesse to get it out and back in successfully. You can easily finish the job in an afternoon if you are mechanically inclined. Thanks for watching!
Thank you for the warning.
Thank you. Should both servo be replaced? Great videos
In my opinion, with the age of these cars, all three should be rebuilt or replaced. You can definitely only do one at a time, but since most of the time spent on the job is in disassembly and reassembly (and there is a lot of time spent there), it makes the most sense to me to do all at once. Hope that helps!
Great video. Trying to diagnose my '05 ES problem. The mode servo is not working. It is not making ANY noise. I replaced the evaporator core, and everything worked flawlessly for 8 weeks. Now air is stuck on feet and defrost. Are the doors jammed in the evaporator housing? Or has the servo gone bad?
Could be either - not hearing any noise, it could be stuck or could simply not be receiving power. Thanks for watching!
Please, could someone tell me the exact Toyota part number of those screws that keep in the correct place the actuator motor?
Thank yoooouuuuu so muuuuuuuuuuch
Thank you for watching!
Great video! I did the same thing on the servo from my GX470 but when i plugged it back the temperature cant be adjusted throughout the whole range for some reason... I hope that is not a controller. Do you have thoughts on that? Your input would be very helpful!
If the temperature adjustment worked before you servicing the servos, chances are one of them is due for actual replacement. I would try swapping out the offending one, though if the problem persists temperature controllers can be had used on eBay for relatively cheap. Hope that helps, and thanks for watching!
It wasn't working good before, that was a reason to take it apart. Probably the best thing to do is going to be a complete replacement.
Thank you!
Thanks, Please tell me mine used to make grinding noise behind the dash, now the modes don’t work (airflow direction) is there an option to diy fix the servos or do I need new ones ?
You can pull them out and clean them, but personally if I were to do the job over again I'd just replace to ensure I don't need to do it for years to come. These parts are a pain to get to, and despite the fact that mine have been going strong for 3 years post-clean, I'd rather be safe than sorry. Thanks for watching!
I can't tell which piece I have to take off to clean the drivers side servo, the video only shows that piece from the backside please help
Which one is for the cold/ heat? The fan lookingnine or the one with the white arm.. my car doesn’t get heat in the right side just the left but not quite sure which one does this function, and is there a difference from the part number for the drivers side and the passengers side or are they the same ones
I honestly don't remember at this point - I did this a couple years ago. I recommend going ahead and cleaning or replacing all of them, though, as they will all need it and you might as well knock it out all at once. Thanks for watching!
Hello. Thank yoy for another great video. I had a problem in Lexus GS 2012. When AC is on and set to cooling it blows cold air from ftont vents and at the same time hot air from back passanger vents. Do you have an idea where to find a solution? servos or something else?
That sounds like something else, maybe rear heat on if separate in your car? Thanks for watching!
I have the same problem in a 2002 GS350 2015 Lexus IS350 F Sport. The AC is not coming out cold on the passenger side. I don't think there's a way where you can put the heat on in the rear and not in the front at the same time. Everybody says servo or actuator
Just replaced two of these yesterday, and one other a few months before. It's the most annoying repair i've ever done! Major pain in the... Especially the one behind the pipes! It took like 5 hours yesterday only, and another few a few months before. I also had to ask my mate to help, he's got smaller hands, lol. Now all the three on the passenger side are brand new.
I also have the fourth servo but i don't even know where it is, lol. Probably on the driver side? But luckily it's not bad (yet) so i'll fiddle with it once it needs attention.
The driver's side one isn't too bad to get to - right above the gas pedal (assuming you're talking about a LHD car). Thanks for watching!
@oleyella85 There are indeed 4 actuators - not all are for air blend (i.e. hot/cold), but also serve functions like recirculation. Hope you get your blend issue resolved soon!
@@redonKiLaus I've been tinkering there recently (removal of an unused nokia handsfree device and redoing the cut cables) but I don't remember seein the actuator there. (didn't look for it of course.)
btw i don't know why am i doing this. my car is seriously cursed. never keeps disappointing, no matter how much money i pour into it (most of them through the dealership!)... am I the only one?! :/ legendary reliability. my ar*e.
@@janoskovari9295 Mine has been extremely reliable - other than preventative maintenance items, I've never had something major break. The highest expense failures were door lock actuators, to the tune of roughly $500 in parts and a couple hours of my labor. Not terrible for parts 17 years old, and certainly reasonable in my opinion.
Thanks for watching!
Great video! Could you tell me where to buy this motor only? Thank you!
I'd go directly to Lexus for new servos, or Toyota if they are a Toyota part crossover. Thanks for watching!
What if you don’t hear a click just a winding noise? Only driver side throws cold air. Passenger side throughs hot. I have an 01 gs430. Would it be the servo?
If you hear a "groaning" or "moo-ing" sound, then that is likely your servos as well. It is a very common issue, and begins to happen at 100-150k miles on average in my experience. Hope that helps, and thanks for watching!
How can I tell which servos do what, I’m reading there are 4 in total. 1 on the driver side and 3 on the passenger. How can I tell which ones are which? Parts store only offers two types, mode and blend door.
This may help point you in the right direction: www.clublexus.com/forums/gs-2nd-gen-1998-2005/634751-how-to-fix-your-servo-motors-complete-guide.html
IMO, if one has issues then all are worth cleaning or replacing, since the others aren't terribly far off from failure either. Thanks for watching!
I've got this occasional loud electric motor sound coming from directly behind the middle console that lasts around 10 - 30 seconds. It's not a ticking noise, it's a loud, constant electric motor type sound. It always goes after after that time but reoccurs either later that day or sometimes a week later. It's been doing it for years now and it does seem to be affected by me altering the temperature setting. Is these services? What could it be?
It could be the servos, definitely sounds climate control related if it changes with temperature actuation. Definitely something that needs diagnosis piece by piece unless you can get it in front of an experienced Lexus/Toyota tech and they diagnose from experience and by sound. Thanks for watching!
How would I know which one to replace? The clicking appears to be centralized, not on one side or the other...
The best way would be to stick your head under the driver's side and passenger side dash to determine which side of the center console the clicking is on. When sitting in the driver's seat, it will sound like it comes from the center, but once underneath you will be able to tell. In my case, I knew the issue would be impending on the main set of servos, so I just took care of them all in one whack. Thanks for watching!
Mines just stay stuck on defrost mode. But it will change from hot to ac. It’s just stay stuck on the defrost position and what did u use to clean the gear with.
I believe I used IPA (91%) and cleanroom swabs (amzn.to/2FOyN0R) to clean the encoders if I remember correctly. The defrost being stuck on is definitely a common mode of failure for these servos. Thanks for watching!
Would a regular cordless drill be able to get these particular parts on and off?
You'll want to use hand tools on these, no room for power tools under the dash. Thanks for watching!
On the driver side the servo is covered by the footwell air duct, can you explain how to remove the air duct?
If you're talking about the duct that's built into the underpanel under the dash, IIRC it was screwed and/or clipped in. It's been years since I did this job so I can't remember for sure. Thanks for watching!
It happened to my XE10 IS but it's the HVAC, it was stuck and didn't switch the air from face to feet to windshield, I put a new one but still doesn't work, at this point I really can't understand what could be the problem.
Might be a jammed flap, lots of potential problem sources there. Thanks for watching!
For replacement parts are the driver and passenger side the same?
I believe they are different parts, but I would confirm via the Lexus parts catalog and diagrams to make sure. The internal components might be the same, but I think the linkages were different. Hope that helps, and thanks for watching!
I am having trouble getting out this air duct 6:25. Is there any specific things I need to look out for?
It's a royal pain...you really need to crunch fingers in there, and manipulate it out little by little. If I remember correctly, not too much force needed, but firm movements are required. Thanks for watching!
Lexus didnt use allen drive screws because they don't put those servos in this way. it is the first thing they put in before the dash so they have no problems with phillips screws
Correct, they don't have any issue on assembly, but it would be nice for manufacturers to take into account serviceability as well, which Toyota/Lexus is actually typically quite good at. As someone with a mechanical design engineering background, it's something I always think of. Thanks for watching!
i have 2002 lexus gs 300 that need to replace this servo. please give me the part number and where to purchase. thanks
Would a bad servo somehow stopp ac from blowing cold ? From what I understand servo only directs air, yet someone suggested that it's the reason for my ac to randomly not work (more and more not lately) now I know servo is bad cuz I hear it, and because the windshield defrost gets not air. But as for ac - got freon, got proper pressure, no leaks. So i assumed pressure switch and a tech (Lexus tech) suggesting it's servo is the reason.didnt get to ask him why or how. Does it make sense to you ?
Thank you for the video !!
It can, basically your AC system is still working, but the blend door controlled by a servo that changes from full cold (AC) air that's blown thru the evaporator core, to full warm air thru the heater core, or somewhere between, does what it wants to or stops responding entirely. When this happens, you can certainly get no AC. Thanks for watching!
@@redonKiLaus that's good to know. thank you so much! Awesome
Thank yoooouuuuu
Thanks for watching!
I have the 2001 GS430. On the driver side. When you drop the panel, you can see 2 screw which is access to remove the Servos, the 3rd screw is nearly impossible. There's air duct that blocks it and is not visible. I tried it for nearly an hour to remove the 3rd screw even with a stubby screwdriver but it's impossible on my GS430.
Any updates? I also have a 01 gs 430 and I want to work on cleaning my servos
@@fresh246 Probably better off just replacing it outright! the driver side servos is easier, just the 3rd screw is very tough to get out! Good luck!
If the grease is “non conducive” that would mean it’s “dielectric”. Could you use a product like super lube that has PTFE, is non conductive and widely available? Thanks
Right? I'm so confused by this.
I used dielectric grease and it still searched.
@@devonblaine The only grease I have heard that is validated to work is called “Krytox” and it’s like $26 for a small tube online. Personally unless I was doing a few of these I’ll just drop the $100 for a new Denso and carry on living my life
Hi. I own a 2001 gs300 with 165k well maintained car. I have a question for you, my vents and controls are working perfectly fine but for some reason I’m hearing a weird noise all of a sudden behind my dashboard, more towards the drivers side and center dash. It almost sounds like a coffee pot dripping or whatever that noise is that it makes lol another way to describe it would be it almost sounds like a little machine tryna send signals or something.. it’s not loud at all and you can only really hear it when the windows are all up, the cars stopped completely and the radio is off. Any idea what that may be? I was thinking servo but im not experiencing any issues with the climate controls. Let me know your thoughts before I go ahead and move forward. Thanks
It could indeed be the servos - when mine started to act up, I didn't have huge issues with climate controls, but heard a "tick tick tick" noise behind the dash, almost like the servos were quietly clacking back and forth hunting for home (which is what they are doing). With that mileage, I wouldn't be surprised if they are starting to go. Thanks for watching!
Thank you
Will servo motor from Aristo fit on to Gs300 2001. I am tallking about the Air Mix servo for driver and passenger
It might, but may be reversed since Aristos are RHD. You'd need to double check P/Ns. Thanks for watching!
Would’ve been nice to see how to get out the drivers one 😅. The passenger side isn’t that bad because you can remove of much stuff
Does anyone know what type or what you call of the tiny motor is?
What about the buzzing sound for 10 seconds when you start the car and then it goes away? Driver side servo?
You might be referring to the brake booster priming, as it is electronic in these cars and not vacuum assisted. The servos click and do not make noise consistently, but the booster primes every time you start the car after it has sat for a little while. Thanks for watching!
LiLDeMoN8I8 my car makes a loud brrrrrr noise at random. I can be driving or even after the car is shut off after a drive. Brrrrrrr! I’ve gotten used to it but I hate it because it is loud.
@@stevetilk4926 did you ever figure out what that buzzing noise was in your car mines doing the same exact thing
Reko King yes. I ended up replacing both servos. No more problems
What the heck is non dielectric grease? it’s either conductive or dielectric
probably just silicone grease ?
Yes very confusing.
i have an issue with my GS 450H it mix Air re-circulation and fresh air , it is absorbing from outside always when i drive behind a truck its super inside will be full of smoke smell what should i do ? please
It could be an issue with your AC servo, but there are a multitude of other points in the AC system that could cause that issue. If you can't diagnose yourself, I would take the vehicle to a competent mechanic or dealership. Thanks for watching!
Have the same issue. Any luck with resolving it?
ali abbas yes I opened the compartment open and close air flow was misplaced and malfunctioning i just snap it in back and start working fine since then
You scared me at the end about disconnecting the yellow wire connectors as I did this on my GX470 while accessing my servos. I didn't unplug battery. What happens now?
You're fine, other than you might have an SRS/airbag light come on until reset. The danger is disconnecting, sparking, and causing an airbag to inadvertently pop. Thanks for watching!
My 04 Lexus GS 300 is not blowing through the 2 front vents. Can the servo be the issue?
It absolutely can; try changing the mode from front vent to foot vent or anything else to see if it changes. If not, or if it's noisy, then chances are your servo may be to blame. Hope that helps, and thanks for watching!
by non dielectric grease, does that mean any non conductive grease? like permatex?
I think he meant to say non conductive grease but switched it to non dielectric at the last minute. So it's just dielectric grease.
@@jccem2 Yes its a little confusing as dielectric grease is none conductive, none dielectric would be conductive!
I keep hearing clicks but I thought it was the Traction Control resetting itself..will check mine out...didn't even know it had this feature 😥😥😥
My GS400’s AC isn’t working properly. Half the car is pumping out AC all the time. The other half can be hot or cold. I wonder if it’s the servos.
Sounds exactly like the servos. Thanks for watching!
My gs300 blows cold for a second then it starts blowing warm/hot. Would u happen to know whyy
This could be the issue, I'd suspect the servos first. Thanks for watching!
Ok so I did all this to my vehicle, the chatter went away but the temperature on the passenger side is still warmer than the driver... and the driver side is not as cold as it used to be. What could it be now?
That might be a temp sensor, climate control module, or another of the servos. Lots of potential variables. Thanks for watching!
My lexus blows hot air only will this help my problem?
It will if the reason it is blowing hot air is because the servo is not responding. If you hear clicking noises behind your dash, then this is likely your issue, but if not, you may simply have an issue with your AC system. Thanks for watching!
what is a symptom of a bad servo? currently in my is300 i am not getting any air through my vents it is coming only through the dash, and it is warm air will a bad servo affect the hot and cold AC? @redonKiLaus
Yes it can, your ventilation system may not be responsive to your inputs and can get "stuck" on certain modes, or change modes randomly. Hope that helps, and thanks for watching!
@@redonKiLaus Yes that helps immensely would you know which servo needs to be changed? thank you for the reply.
can you use white grease spray?
It's likely not going to be as good, but probably. Thanks for watching!
Krytox grease is actually conductive. So I guess you meant you want to use dialectric grease so that the conducting ring won't short each other out?
This was exactly what happened in my case. I cleaned the plate and didn't grease it up.
Mine isn’t making any noise I’m just not getting any hot air! Any recommendations?
Could be the controller or servos - those would be my top two guesses. Thanks for watching!
redonKiLaus yea it’s the blend servo. I’m trying to take it out now. But with the GS300 there’s two pipes that’s blocking the bottom screws
wont dielectric grease make the contact worse?
It would if there wasn't physical contact, but since there is, the encoder still works and the grease prevents any strange readings due to conduction through it. Thanks for watching!
Could this be the reason my gs300 doesn’t blow hot?
It absolutely could be. Thanks for watching!
Is this the squeaking noise behjnd my dash ?
It might be, it's the most common reason for a clicking, squealing, or even "moo-ing" noise behind the dash. Thanks for watching!
Can these make ac not work?
They can, depends on the symptoms and exact mode of failure. Thanks for watching!
@@redonKiLaus mine just doesnt blow cold it blows hot air and shut on and off
@@tonytonez5561 If the mixer flap servo is not functioning properly then that could cause that symptom.
I have a gs430 2001
Hell yeah me too bro
190000
My lexus has been making clicking noises n blowing under my feet so I guess my servo is bad
Indeed it is. Since it's gone to the point where it won't blow air out the primary vents, you may want to look int replacing it with a new servo if you can afford it, because rebuilding them might not be a lasting repair and you definitely don't want to be re-doing this job. Thanks for watching!
What did you clean it with?
I believe I used IPA (rubbing alcohol, 91%) to clean the contacts on these. Hope that helps, and thanks for watching!
05 IS 300 : My AC works fine...but the heater is wacky. If I turn the AC and full heat on...then heater wakes up,..... briefly. Confused.
If you hear noises behind the dash, then it's probably a servo issue. If not, I'd still keep the servos in mind as suspect. Thanks for watching!
Mine's making like a sound of like popcorn is that the servo
That is one of the typical sounds, so it very well could be. Thanks for watching!
The pin that contacts the worm gear is notorious for sliding too close to the motor. Check out th-cam.com/video/Wx03Wbf27rk/w-d-xo.html Just past the 15 minute mark he shows you the problem and how to fix it.
Is this the same issue that causes a (seemingly random) noise that sounds like "Brrrddrrddrrddrrddrr". It definitely sounds like a motor trying to engage in the AC unit but is less click-click-click and more of a deeper tone.
That's probably a servo as well, though it may be a broken gear inside as opposed to an encoder issue. Thanks for watching!
So much harder on the UK spec model..Steering Column and Brake Pedals are in the way...mine needs doing but will take an age just to get to it..im thinking at least the Brake Pedal will need to be removed as i cant get anywhere near them bastat screws
I can only imagine - it's super cramped even on LHD models. Thanks for watching!
Fuck I broke mine, the arm is super glued on
Wait till you do pass side
I have no heat on the ledt and now no cold air on the right side. Good grief
Sounds like the actuators. Thanks for watching!
Thanks. I checked actuators and working. Something else wrong. High side a/c hot but low side warm. Beats me 😣
Mine is currently moo'ing and its an aggressive cow moo'ing. Its a pissed off moo'ing cow and its out to hurt someone.
Sounds like the good old servos to me! Thanks for watching!
So I have a 2001 gs300 ac blowing weak, almost nothing threw the center vents, changed the cabin filter and still nothing, I was told there 4 servos do u know witch one activate the center vents and where it’s located above the radio, thank you
I don't know which controls upper vent flow, but if you have flow through your upper side vents and not the center ones then your issue may not be a servo - check to see if your vents are closed, or if a duct has been disconnected too. Thanks for watching!
redonKiLaus i pulled the center vents nothing blocking behind the vent I just haven’t followed it down further, I just thought that was a common problem, I’ll just have to dig deeper into the dash
I have the same issue
@@REBSLOKS me too!!! If you happen to find out any other helpful information on this matter please respond. Thanks!
What happens if I didn't mark the servo or the motor hahahaha
You may just want to replace it if you don't get it back together properly. Thanks for watching!