Go Back   Club Lexus Forums > Lexus Model Forums > RX Models > RX - Second Generation
Sign in using an external account
Register Forgot Password?

A/C problem for 2004 RX330

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 02-28-11, 03:11 AM   #1
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default A/C problem for 2004 RX330

I'm new to this forums and have a problem need some help here.

I have a 2004 2nd generation Toyota Harrier (Lexus model RX330). The A/C blowing hot air if temperature is not set to Max Cold. This happened no matter whether turn on the A/C with Auto or Manual setting. This case also happen no matter whether setting the A/C system to Dual mode or not, no matter whether turn on or off the air intake control button. As long as A/C on, cold air only come out when temperature set to Max Cold, even if set to 18 degree, full hot air come out. Another thing is, say I have the A/C on, set to max cold, cold air came out from the front vent, but after I try to increase the temperature to say 18 degree, the hot air flow will change to Floor/Windshield mode.

Any idea what's wrong? Could it because due to the change of the battery? Is there anything need to reset after replacing the battery?

Thanks in advance for any help.
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
HKTaz is offline   Reply With Quote
Old 02-28-11, 06:35 AM   #2
mandyfig
Moderator
Trader Score: (0)
 
mandyfig's Avatar
 
Join Date: Apr 2007
Location: GA
Posts: 8,737
Default

Sounds like your temperature controller is acting up. Take it to an AC place.

It appears that the AC is only triggered on the MAX setting and any setting other than will result in the Heating. Hence your servo triggers to a foot setting.
__________________
SC430 WGC-Ecru/RX330 Bamboo Pearl-Gray/IS350 Black Onyx-Gray
mandyfig is offline   Reply With Quote
Old 02-28-11, 08:59 AM   #3
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default

Quote:
Originally Posted by mandyfig View Post
Sounds like your temperature controller is acting up. Take it to an AC place.

It appears that the AC is only triggered on the MAX setting and any setting other than will result in the Heating. Hence your servo triggers to a foot setting.
Thanks mandyfig. So it sounds like I need to fix one or all of this??
http://lexus.sewellparts.com/accesso...2004/4620.html
HKTaz is offline   Reply With Quote
Old 02-28-11, 09:19 AM   #4
mandyfig
Moderator
Trader Score: (0)
 
mandyfig's Avatar
 
Join Date: Apr 2007
Location: GA
Posts: 8,737
Default

Sorry I may not be able to diagnose. It could be one of these but I think it might be another thing. It could just be a sensor. Best bet take it to an AC place if you do not want to take it in to Lexus dealer.

In my case one of the servo's was replaced due to a ticking noise. Otherwise my AC was just fine.
__________________
SC430 WGC-Ecru/RX330 Bamboo Pearl-Gray/IS350 Black Onyx-Gray
mandyfig is offline   Reply With Quote
Old 03-01-11, 02:27 PM   #5
willdogg
Rookie
Trader Score: (0)
 
willdogg's Avatar
 
Join Date: Dec 2010
Location: CA
Posts: 59
Default

HK,

Here's something you could try (checking your AC Diagnostic codes):

http://www.lexls.com/tutorials/air/accodes.html

It won't fix your problem, but it could help you isolate it or narrow it down.

good luck
willdogg is offline   Reply With Quote
Old 03-06-11, 06:19 PM   #6
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default

Thanks mandyfig once again.

Thanks willdogg, the link is useful and after following the steps, my system return code 11 and occasionally return code 24. From the website code 11 related to "Open or short in room temperature sensor circuit", but what is code 24 means? Do you have any idea? Anybody?
HKTaz is offline   Reply With Quote
Old 03-06-11, 06:40 PM   #7
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default

Oh, another thing interesting is, the problem with my car (blowing hot air) happen no matter whether A/C is on or not. That is, even with A/C is off, the car will blow hot air at any temperature setting other than Max Cold. This may help to isolate the problem, that is, not really A/C related?
HKTaz is offline   Reply With Quote
Old 03-06-11, 10:16 PM   #8
willdogg
Rookie
Trader Score: (0)
 
willdogg's Avatar
 
Join Date: Dec 2010
Location: CA
Posts: 59
Default

Sounds like you might have a bad relay. Check this old link:

http://www.justanswer.com/lexus/2391...gx470-suv.html

He was having a similar problem with his GX. Here's what he did:

1. Got the $80 relay from a Lexus or Toyota dealer
2. Open the hood
3. Open the under hood fuse/relay block cover
4. Remove the Relay labeled a/c magnetic clutch which will have a part # XXXXX on it, throw that relay in the garbage
5. Install relay part # XXXXX that you will purchase from a toyota or Lexus dealer.
6. You're done.

hope this helps
willdogg is offline   Reply With Quote
Old 03-07-11, 01:23 AM   #9
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default

Thanks willdogg. Not really 100% same case as the GX guy because my A/C switch doesn't blink and the a/c stays cold as long as temperature is set to Max Cold. But anyway I'll check on the relay first. Thanks once again.
HKTaz is offline   Reply With Quote
Old 03-25-11, 01:08 PM   #10
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default

Finally find some time to look further to the problem. After reference to the repair manual with code 11, found out actually the problem is the connector to the temperature sensor is not functioning. Clean up the connector with some contact cleaner, plug it back to the sensor. Now I have the A/C system back! Thanks for everyone's help.
HKTaz is offline   Reply With Quote
Old 03-25-11, 01:14 PM   #11
Carver
Lexus Champion
Trader Score: (0)
 
Carver's Avatar
 
Join Date: Oct 2006
Location: Dallas, Texas
Posts: 1,608
Default

That's good to know, thanks for posting back.
Carver is offline   Reply With Quote
Old 03-27-11, 08:59 AM   #12
willdogg
Rookie
Trader Score: (0)
 
willdogg's Avatar
 
Join Date: Dec 2010
Location: CA
Posts: 59
Default

oh man, that's great news.
willdogg is offline   Reply With Quote
Old 03-30-11, 10:54 AM   #13
alik99
Driver School Candidate
Trader Score: (0)
 
Join Date: Nov 2008
Location: GA
Posts: 29
Default

HK, i think i've got the same problem but in '07 RX. Where do I fine the sensor/connector that has to cleaned? Thx!
alik99 is offline   Reply With Quote
Old 04-05-11, 08:37 AM   #14
HKTaz
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2011
Location: CA
Posts: 13
Default

If you also have the Code 11 after going through the system diagnostic, then according to the repair manual, the trouble area will be either:
- Cooler thermistor (the sensor)
- Harness or connector between cooler thermistor and A/C amplifier
- A/C amplifier

I don't have my car with me at the moment so I can't attache a photo here, but the sensor actually is not very difficult to find. It's next to the steeling column, just in front of your right knee, you'll see a small cover with few horizontal parallel interstice, not very big in size, just as big as your thumb.

You can take a look on the photo posted by mctufts in the thread Removing center console underneath shifter- DIY. Look at the photo "Picture of dash being pulled away".

I didn't try to remove the cover as shown in the photo, I did the cleaning on the connector from the back, get hands behind from underneath.

Hope this help.

Quote:
Originally Posted by alik99 View Post
HK, i think i've got the same problem but in '07 RX. Where do I fine the sensor/connector that has to cleaned? Thx!
HKTaz is offline   Reply With Quote
Old 04-10-11, 05:37 AM   #15
mschluns
Driver School Candidate
Trader Score: (0)
 
Join Date: Jul 2006
Location: wv
Posts: 8
Default

ai had similar problems with my 04 rx, my problem was related to a radiator leak...The car didnot overheat but the radiator level was low enuf to screw up the cooling/heating controls...there is a recall on these radiators, Lexus replaced mine in 2010...
mschluns is offline   Reply With Quote
Old 04-10-11, 05:37 AM
 
 
 
 
Reply

Tags
04, 2008, 350, ac, air, blowing, conditioner, harrier, hot, lexus, location, problem, relais, relay, rx, rx330, toyota

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
'05 RX330 blows hot air inconsistently quantfutur RX - Second Generation 33 03-11-14 12:05 AM
Air conditioner not working, no cold air, no vents. No A/C! Alex818 SC 430 12 07-13-13 01:05 AM
2004 RX 330, Loud Clicking in Engine, Related to Climate Control System(?) jspeciner RX - Second Generation 13 06-12-13 10:36 PM
Air Condition Problem bombermani IS - Second Generation 4 05-26-13 01:22 PM
Help. AC doesn't get cold FZ6 Dude RX - Second Generation 12 08-07-12 01:08 PM

All times are GMT -7. The time now is 11:30 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info