karlfuchs9
Lexus GX AC failure
Summary of the thread
A 2015 Lexus GX is experiencing a complete air conditioning failure, with the system not cooling or switching on. Initial checks of the fuses did not resolve the issue, leading to speculation about a possible refrigerant leak or a more serious problem. A suggestion was made to check the pressure switch, but ultimately, a defect in one of the AC system valves was identified as the cause. The issue was resolved by a mechanic, costing approximately 1000€.
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4 comment(s)
karlfuchs9 (community.author)
Thanks for the quick reply! No, I haven't noticed any unusual noises at all. It just suddenly stopped working. Where is the pressure switch located? Is it something I could potentially check myself, or am I better off taking it to a mechanic?
tim_hofmann1
Without AC diagnostics, it's tricky to pinpoint the pressure switch. In my case, it turned out to be a defect in one of the valves in the AC system. Cost me a small fortune to fix. I'd recommend taking it to a reputable workshop. They'll be able to diagnose the problem properly.
karlfuchs9 (community.author)
Okay, thanks for the advice. I'll book it in with a local garage and see what they say. Sounds like it could be a similar issue to what you had. I'm bracing myself for a hefty bill. The workshop confirmed it: a defect in an individual valve in the air conditioning system, just like you said! Cost me around 1000€ to fix it. Thanks again for your help!
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LEXUS
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GX
tim_hofmann1
I had a similar problem with my GX a while back. If the AC isn't even turning on, it might be the pressure switch. Have you noticed any weird noises coming from the AC compressor before it died?