Smog sensor settings
Smog sensor settings
Look what i found.
When you hold the AC recirculate button this menu pops up. I'm not sure how exactly it controls the smog sensor but as you can see there is low, medium and high setting. Hope this is not a re post.
When you hold the AC recirculate button this menu pops up. I'm not sure how exactly it controls the smog sensor but as you can see there is low, medium and high setting. Hope this is not a re post.
Driver
Joined: Jan 2011
Posts: 163
Likes: 0
From: Netherlands
Thank you,
This is very useful.
Yes, it has been mentioned in the Tips/Tricks (merged threads), but it is a bit hidden there.
And I could find no picture till you took the trouble of making it and posting it for us to see.
No harm in mentioning things more than once.
Thanks again,
Jac
This is very useful.
Yes, it has been mentioned in the Tips/Tricks (merged threads), but it is a bit hidden there.
And I could find no picture till you took the trouble of making it and posting it for us to see.
No harm in mentioning things more than once.
Thanks again,
Jac
Lead Lap
Joined: Jul 2009
Posts: 4,810
Likes: 15
From: MI
I believe you have to have the AUTO light illuminated on the recirc / outside air button in order for the smog sensor to operate. But, I don't remember whether setting the smog sensor toward HI makes it more sensitive (switches to recirc sooner) or more tolerant of smog (switches to recirc later). Anyone?
Lexus Champion
Joined: Oct 2007
Posts: 2,489
Likes: 107
From: AZ
The high setting makes the smog sensor more sensitive and changes the airflow to inside recirculate quicker. I always leave mine on the highest setting. See no reason not to. Why do I want to allow any outside odors into my car if I can prevent it?
Lead Lap
Joined: Mar 2006
Posts: 4,189
Likes: 16
From: NY/NJ
the sensitivity between HI and LO is not that great. I had found this setting right after cleaning out the smog sensor and putting on HI sensitivity really didn't make it jump to re-circ. that much faster. You still get a slight sniff of smog no a truck before it kicks in. But hey, better a small sniff than a few big gulps.
Intermediate
Joined: Nov 2001
Posts: 276
Likes: 7
From: Texas
Smog Sensors
--Carnut
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Instructor
Joined: Feb 2008
Posts: 914
Likes: 70
From: CA
My 04LS is ALWAYS on recirculation when Auto mode is selected. I have it set for medium low. Is San Diego that dirty? I thought we had good air. It's literally NEVER on fresh air. Is there something wrong with my car?
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Intermediate
Joined: Nov 2001
Posts: 276
Likes: 7
From: Texas
Good luck.
Intermediate
Joined: Jul 2009
Posts: 310
Likes: 2
From: Tri-state
Hey guys, I come from the IS forums.
Where is the smog sensor located? Someone mentioned cleaning it a few post up. I'm asking because even with mine set to HIGH... it will NOT change to recirc even with the truck right in front of me and my cabin smelling real bad.
Does the cabin filter have anything to do with the sensitivity? Thanks!
Where is the smog sensor located? Someone mentioned cleaning it a few post up. I'm asking because even with mine set to HIGH... it will NOT change to recirc even with the truck right in front of me and my cabin smelling real bad.
Does the cabin filter have anything to do with the sensitivity? Thanks!
The sensor itself is by the horn in the LS430.
https://www.clublexus.com/forums/ls4...-cleaning.html
https://www.clublexus.com/forums/ls4...-cleaning.html
Last edited by xuserx04; Feb 1, 2013 at 09:59 AM.
Intermediate
Joined: Nov 2001
Posts: 276
Likes: 7
From: Texas
Hey guys, I come from the IS forums.
Where is the smog sensor located? Someone mentioned cleaning it a few post up. I'm asking because even with mine set to HIGH... it will NOT change to recirc even with the truck right in front of me and my cabin smelling real bad.
Does the cabin filter have anything to do with the sensitivity? Thanks!
Where is the smog sensor located? Someone mentioned cleaning it a few post up. I'm asking because even with mine set to HIGH... it will NOT change to recirc even with the truck right in front of me and my cabin smelling real bad.
Does the cabin filter have anything to do with the sensitivity? Thanks!
Driver School Candidate
Joined: Feb 2006
Posts: 16
Likes: 1
From: Florida
Smog Sensor Musing
This is a great thread and promises to solve my A/C issues.
Scenerio: A/C mix from driver and passenger sides was different even with sync'd controls. Noticed Fan noise was louder than usual under almost all conditions - like a mixing door was not operating correctly. Also noticed that pushing the reciculation/auto button did not make a noticeable difference. Saw on an earlier thread that by holding the recirc/auto button IN when starting the car a list of codes would be revealed in the Nav screen. In my case, the SMOG SENSOR came up.
Hit the CL boards again and found this thread.
Originally thought I had a freon leak or a clogged mixing door, but if my results equal what others have found: - WOW!
I'll get under the hood before the weekend and report back. This could be a major $$$ saver. Imagine what one might have to pay to have someone troubleshoot this issue before this simple fix is found.
Thanks much to all the SMOG SENSOR pioneers before me.
Scenerio: A/C mix from driver and passenger sides was different even with sync'd controls. Noticed Fan noise was louder than usual under almost all conditions - like a mixing door was not operating correctly. Also noticed that pushing the reciculation/auto button did not make a noticeable difference. Saw on an earlier thread that by holding the recirc/auto button IN when starting the car a list of codes would be revealed in the Nav screen. In my case, the SMOG SENSOR came up.
Hit the CL boards again and found this thread.
Originally thought I had a freon leak or a clogged mixing door, but if my results equal what others have found: - WOW!
I'll get under the hood before the weekend and report back. This could be a major $$$ saver. Imagine what one might have to pay to have someone troubleshoot this issue before this simple fix is found.
Thanks much to all the SMOG SENSOR pioneers before me.
Last edited by TheLexor; Jul 22, 2013 at 01:13 PM. Reason: This is a 2004 LS430