HVAC - Air Conditioning / Heating - Troubleshooting, Questions, Info
#211
Racer
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Hello Guys,
I hope each and everyone of you are safe and doing good.
The climate control buttons on My 2018 GX 460 suddenly stopped working and are completely non responsive.
This happened when I was driving my vehicle and it was raining and I was continuously using Front and Rear buttons to clear up my front and back windshields.
None of the front, rear, dual up & down Temperature buttons are working. Even the A/C and fan controls in the dashboard screen has become non responsive.
Can anyone of you help me in understanding what could be reason behind this?
I am on a long road trip (which is still underway) and would appreciate your much needed help here.
Thanks,
DJ
I hope each and everyone of you are safe and doing good.
The climate control buttons on My 2018 GX 460 suddenly stopped working and are completely non responsive.
This happened when I was driving my vehicle and it was raining and I was continuously using Front and Rear buttons to clear up my front and back windshields.
None of the front, rear, dual up & down Temperature buttons are working. Even the A/C and fan controls in the dashboard screen has become non responsive.
Can anyone of you help me in understanding what could be reason behind this?
I am on a long road trip (which is still underway) and would appreciate your much needed help here.
Thanks,
DJ
#212
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Well I see the temperature that was previously set but the buttons are non responsive as in nothing happens when I try to increase or decrease the temperature. I dont think the system is completely shut down but nothing happens when I click either the hard physical buttons or the virtual buttons on the GPS screen under climate.
#213
Racer
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Well I see the temperature that was previously set but the buttons are non responsive as in nothing happens when I try to increase or decrease the temperature. I dont think the system is completely shut down but nothing happens when I click either the hard physical buttons or the virtual buttons on the GPS screen under climate.
#214
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Thanks for your response. If I may ask you a trivial question, can you also let me know how do you disconnect the negative terminal. I mean, would it require any specific tool to disconnect the terminal?
#215
Racer
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You will need a socket ranch or adjustable ranch to release one nut from the battery terminal. But based on your question, I would seriously consider to take the GX to dealership as under warranty repair.
#216
Super Moderator
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If it become responsive after power cycle you can also run a diagnostic against the HVAC system
https://www.clublexus.com/forums/gx-...echstream.html
https://www.clublexus.com/forums/gx-...echstream.html
#218
Driver School Candidate
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2010 GX with the three zone system. Front driver and passenger vents blow strong heat and AC but the rear vents blow very weak. Do I have a blower motor going out? Is there a rear blower motor?
#220
Driver School Candidate
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I'm interested in a 2014 GX at a local Lexus dealer - when digging through the service history I saw 'EVAC Recharge' and 'Vents have odor' on three separate occasions since 2017. It sounds like a chronic issue with the A/C so wondering if the car is still worth pursuing / what the potential issue is.
My main concern is that they can recharge the A/C today and it blows ice cold, but a few hundred miles down the road the A/C fails again. I've searched the forums and A/C issues typically arise in 1st gen and much older cars.
Any thoughts on how I should address this with the dealer?
My main concern is that they can recharge the A/C today and it blows ice cold, but a few hundred miles down the road the A/C fails again. I've searched the forums and A/C issues typically arise in 1st gen and much older cars.
Any thoughts on how I should address this with the dealer?
#221
Lexus Fanatic
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Odors are usually caused by debris collecting in the condenser which causes mold or mildew to build up. Toyota actually makes a product that you pump up into this area and then you let it drain after it cleans it out I think it's a foaming style product. Usually more of an issue in areas of high humidity.
#222
Driver School Candidate
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Got it, that makes sense - the car is in NY so presumably the mold / mildew build up is not humidity related and maybe the cause of a leak.
These are the service notes from 5/2020 and 1,000 miles ago which scared me:
DESCRIPTION:PERFORMED EVAC AND RECHARGE OF SYSTEM/ ~|~CUSTOMER STATES TO CHECK A/C SYSTEM, NOT BLOWING OUT COLD AIR, CHECK AND REPORT ~|~ ~|~54907 100 EVACUATE AND RECHARGE A/C SYSTEM SEE ON VISIBLE LEAKS MY NEED EXTENSIVE A/C WORK IF SYSTEM STARTS BLOWING WARM AGAIN
These are the service notes from 5/2020 and 1,000 miles ago which scared me:
DESCRIPTION:PERFORMED EVAC AND RECHARGE OF SYSTEM/ ~|~CUSTOMER STATES TO CHECK A/C SYSTEM, NOT BLOWING OUT COLD AIR, CHECK AND REPORT ~|~ ~|~54907 100 EVACUATE AND RECHARGE A/C SYSTEM SEE ON VISIBLE LEAKS MY NEED EXTENSIVE A/C WORK IF SYSTEM STARTS BLOWING WARM AGAIN
#223
Pole Position
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I'm interested in a 2014 GX at a local Lexus dealer - when digging through the service history I saw 'EVAC Recharge' and 'Vents have odor' on three separate occasions since 2017. It sounds like a chronic issue with the A/C so wondering if the car is still worth pursuing / what the potential issue is.
My main concern is that they can recharge the A/C today and it blows ice cold, but a few hundred miles down the road the A/C fails again. I've searched the forums and A/C issues typically arise in 1st gen and much older cars.
Any thoughts on how I should address this with the dealer?
My main concern is that they can recharge the A/C today and it blows ice cold, but a few hundred miles down the road the A/C fails again. I've searched the forums and A/C issues typically arise in 1st gen and much older cars.
Any thoughts on how I should address this with the dealer?
Last edited by ASE; 07-15-20 at 09:38 PM.
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#224
Pole Position
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Odors are usually caused by debris collecting in the condenser which causes mold or mildew to build up. Toyota actually makes a product that you pump up into this area and then you let it drain after it cleans it out I think it's a foaming style product. Usually more of an issue in areas of high humidity.
Last edited by ASE; 07-16-20 at 07:57 AM.
#225
Driver School Candidate
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I think that's exactly right - they've recharged it every year for the previous owner to kick the can down the road.
I will call in tomorrow to confirm what work they've done to resolve the A/C - I guess for them to do a proper job and truly resolve the issue they will have to take out the dash and investigate the evaporator which I feel is highly unlikely what they will actually do...
I will call in tomorrow to confirm what work they've done to resolve the A/C - I guess for them to do a proper job and truly resolve the issue they will have to take out the dash and investigate the evaporator which I feel is highly unlikely what they will actually do...