2010 Lexus RX350 Climate System Control Error, AC Amplifier Problem 

That would be too anticlimactic!

Glad to help as it seems to be a pretty common problem and I see how it could be expensive trying to troubleshoot this. Looks like the link I put in the description still works, looks to be about $600.

It's definitely hard to measure seat comfort since there are so many human body sizes, however, sound dampening is measured and part of the specifications. Generally speaking Lexus is always going to have more sound dampening material than Toyota.

You may actually have the blend door issue then

Ya it seemed to fix several problems we were having and didn't realize they were related, such as the system regulating the temperature much better, then system coming on when you turn it on, the system being much colder as well.

Thank you! Cheers!

If you go to a mechanic they will tell you your system is working fine. :-) It's actually an issue not very many people know about and ultimately a leap of faith. If you turn on AC and it doesn't come on until sometime later, that is this control module. Glad my videos are helpful!

Nice job! You're lucky you have a local dealer who sells parts for a decent price!

UPDATE: This repair ended up not working for me. I had to take it to a shop and have the compressor replaced for $2000. Be sure you have the correct diagnosis before buying the AC amplifier or you’ll waste about $700 like me!

@@michaelf971 If you still have the old one and is presumably good, I might buy if off of you for the right price....

​@@michaelf971did you have the same error message ?

Yes that link is to the one that I ordered and installed. The part number you posted also says 2011, check out this ebay link - www.ebay.com/itm/353220765168

Thank you for the reply! I think I may take a chance on this eBay link you just sent

Some car are made in Japan other are made in America make sure you get the one for your car.

@@Tekevin thank you!

Darn, I installed the identical part number, official Toyota part, new, but it did not resolve the problem. Still says Climate System Control Error. By the way, I realized AFTER I took everything apart that I could have temporarily hooked up the new part IN THE GLOVE BOX. In your video at the 2:01 mark, you can actually unclip the wires and pull them through into the glove box (carefully) and hook up the replacement as a test before going through the trouble of full installation.

If you're not getting any of the climate system control errors then you likely do have an issue on the compressor side.

Does the noise get any louder or softer if you are turning? First thing to check is to see if you have any loose plastic parts in the engine bay or underneath, or inside the wheel well. If you feel the noise in the steering wheel it could be a worn out tie rod.

Scouring the internet forums and then taking a $650 gamble. :-)

That sounds more like a fuse problem, have you checked them?

@@CarolinaCowboys my goodness you were right. It was a fuse problem. On the driver side. Thank you.

@@LaZerMouse glad you got it figured out!

Yes this is definitely the problem! Sometimes I would drive for 15 minutes and the AC would finally come on. I had the same AC people tell me there was nothing wrong. It's a very obscure issue but I took a $650 leap of faith and it fixed it.

Ahhhh I'm having this same issue with my Lexus ES350. 😳😳

Ahhhh I'm having this same issue

@@mzmeyakkasturdivant3317 it’s not too bad

I know right! And this is a 14yr old mode, imagine how much more complicated they are now!

Yeah man The software is no longer supported, I work in tech. The computer hard drive is spinning and will eventually fail. It’s not even the parts that fail, it’s the computers that control the parts that fail. Just to turn the damn ac off, I gotta click menu, go to climate, drag the mouse pointer to the a/c widget and click and like an internet browser. Takes 20 seconds, on my Honda hrv, I just press the ac button. I could understand over-engineering a bridge, but this is just plain retarded. I have a feeling the computer that controls the push to start system will also fail eventually. If the car is supported there will always be updates. They say Lexus is reliable. I beg to differ definitely getting a Toyota.

@@shihanrehman Lexus is the same as Toyota and they're both reliable, but sometimes even still things wear out. It will still last longer than any other vehicle

@@CarolinaCowboys Mechanically they will last longer than any other vehicle. 200k on a a Lexus is the equal of 40k on a Kia, Lexus and luxury brands in general just have unnecessary tech that fails. Just so your wife can stay nice and toasty on the right while you like it cold on the left. Best option get a second wife! I've seen your videos and it's too petty and first world of an issue to spends hundreds of dollars and time over. Toyota doesn't have these "tech" problems and if they do, it's much cheaper to fix.

Watch my other videos on the Lexus HVAC system before you replace the AC Amplifier!

blend door actuator

If the air condition gas is low two sides blows in the car and other two sides blows air and not hot air

It's likely the same issue, but have you tried going through the navigation and turning off and on the AC?

Thanks, it was a complicated one

It was a $650 gamble because nobody else could diagnose the problem and I found only a few cases online where this fixes the problem.

@@CarolinaCowboys Thank you so much for your response. That is truly really kind of you to take the time out and respond. Awesome. I have an ES 350. Wish me luck. And if it works for me, I will pay it forward and upload a little video :)

@@brianyt56 good luck!

No it doesn’t need to be configured, just plug in

My car is getting a “Climate Control System Error” on the screen, so could it be the AC amplifier? Thanks!

@@touvang3307 @carolinacowboys I also have a 2011 LX570 with 193,xxx and recently began getting "climate system control error" when it was exceptionally hot outside here in Charlotte, NC. When it was only mildly hot the CC worked appropriately. I have run the dx and got the following codes B1447/47 Rear Air Mix Damper Control Servo Motor Circuit and B1449/49 Rear Air Outlet Damper Control Servo Motor Circuit. The symptoms we are experiencing however do not seem to have any relation to the front versus the rear, they are in both the front and rear. I have googled and searched many forums for help with these codes and have come up empty. Any advice?

I forgot to mention, when it is malfunctioning it still blows but it's warm and humid. I have checked the refrigerant and that is not the issue, system is fully charged.

@@tntsweeper Try going into the AC controls and turn off the AC and turn it back on. This usually fixes it for me.

Here's the link to where I bought it - parts.longolexus.com/oem-parts/lexus-amplifier-886500e042

You're probably looking at a blown fuse in the main fuse box for the ignition. The AC Amplifier controls the HVAC system but would be separate from the blower controls, that could also be a fuse if it never came on.

I would hook up a code reader and see what's showing

I put a link to where I bought it from, it is sold at various places in the US. First thing to try is to go into the HVAC controls and select the A/C to turn it off, then select the A/C again to turn it on, this is a workaround to get it working.

​@@CarolinaCowboysOk mine never work. Even if i turned it on and off multiple time..the ac in navigation screen is always flashing​ when i push it on

@@jfarhat8607 Sounds like something else might be going on. Have you tried unhooking the battery to reset the computer?

@@jfarhat8607 That sounds like something else going on, i'm sorry can't help

That’s strange, but it could still be random, it will start happening more frequently when it goes bad.

No it usually will never match because they always make parts later on and change the part numbers. There's always a log of the changes so the parts I post in the description will fit.

According to Lexus you're not supposed to change your transmission fluid! I've never done it on any of mine.

@@CarolinaCowboys very interesting

Hey you definitely should do a drain and fill on the tranny fluid… just drain… measure what came out… then fill with what came out.

You’ll need to remove upper fill plug and use a pump to replenish the fluid. Many videos on RU-vid on doing this.

Hmm, that's interesting. Have you tried replacing the battery first just to rule that out? If it's just the AC, It could be the AC Amplifier, but if it's other things like the radio and menu items then it could be something else.

@@CarolinaCowboysthanks for reply! Its only buttons for climate control. Radio is fine.

First thing I would check is if your battery is testing good, it may be a simple issue like that. If it's good, I would unplug the battery and let the whole system reset. After that you're going to want to hook up a code reader to see what the diagnostic code is, so that probably means taking it to a mechanic to understand more of what's wrong.

@@CarolinaCowboys thank you sooooo much 🙏 I really cannot tell you how much I appreciate any advice at all

@@Thatonegirlwhokayaks no problem, please let me know how you end up fixing it!

@@CarolinaCowboys will do!

@@CarolinaCowboys I changed the battery out and it worked! I can’t thank you enough! I’m pretty proud of myself for doing it myself. Thanks again! Winter in Wisconsin and no heat in your car aren’t a fun time 😂🙏

Hmm, I wonder if you need to unplug the battery to reset the system? Could also be a bad replacement module.

Sounds exactly like the problem I was having. The issue is there's not alot of documentation on the issue so mechanics don't really know what to do and it's hard to troubleshoot electronics issues, but this definitely solved it for me

Ya it's crazy, I still have the old board so maybe I'll do another video on taking it apart to see what it looks like inside.

Oil coolant line? What's wrong with it? First i've heard of an issue.

Oil cooler lines, common issue with the the 3.5… supposedly there’s updated ones that don’t fail but when they do fail you may lose so much oil that can blow your engine.

What do you mean by carbon cleaning? You mean like a fuel system treatment?

2gr-fe does not have direct injection

It is not DI, does not need carbon cleaning. The 2GR-FKS has both port and direct injection, and also does not need carbon cleaning. None of the new Toyotas need carbon cleaning as they have both port and direct injection. Thankfully Toyota engineers were smart enough to solve this issue before it happened. Looking at you, Ford EcoBoost...

This sounds like the computer needs to be reset. What I would suggest is to unplug your car battery for an hour, then turn on the car and see if the screen resets.

Wow, that is alot of money, are you sure they aren't replacing more AC components inside?

@@CarolinaCowboys i don't know. it's an insurance issue so i'm trusting the lexus shop i chose in houston texas. i've asked for pictures so i will share them when i get them.

Also, i think you should know i’ve had the “Climate System Control Error” twice before.

Sounds like the same issue!

Yeah that's the sign, but unfortunately you won't know for sure until you've spent all the money and work to replace it.

Is it when your stopped? Or when your moving slow, or moving fast? or slowing down? Do you hear it outside of the car too?

Whenever I'm driving fast or slow, there's a shaking I both feel and hear. It's quieter after a drive thru car wash.

@@oceanlinerkid First through it's a tire, maybe somethings wrong with it. It could also be one of your underneath plastic parts that's flapping loose

@@CarolinaCowboys I have a 2012 lexus rx350 with blower motor not working. In an attempt to see if power does get tot he blower motor by checking for power at the blower harness wires (hot, ground, control). I accidentally connect the voltmeter to hot and control and probably shorted whatever upstream. Now the car won’t even start. You think this AC amplifier has anything to do with the ignition issue?

@@TamPhan-gc6hr You're probably looking at a blown fuse in the main fuse box for the ignition. The AC Amplifier controls the HVAC system but would be separate from the blower controls, that could also be a fuse if it never came on.

Sounds like the same issue

@@CarolinaCowboys I bought a used part to test, they allow a 30 day return limit.

⁠​⁠@@Tekevindid you install the used one? Did it fix your cars problems?

@@deeogrady9096 no my problem was a bad circuit with the navigation screen. It gave a shortage.

Links in the video description!

Here is where I purchased it - parts.longolexus.com/oem-parts/lexus-amplifier-886500e042

Nice! It's a great school. My son is there now and I'm hoping my other son ends up there