AC Pressure Noise GX550 OT+ (2 Viewers)

[CCTX]

When I brought this up with the dealership last year, they were aware and stated that Lexus is aware as well. They tried to add some insulation but it didn't help. They said that for some reason the GX550 had the fill lines and other AC parts on the driver's side while it is usually on the passanger's side for other models. Not sure how accurate this is but this is what they mentioned.

 

[YellowLab]

Sorry to hear your are having this issue - what a pain in the ass.

 

[allenpow]

hello

My understanding is that there is no fix. There is a fan they added to cool the engine and that is what makes the noise. Apparently, all GX and LX engines now have this fan, but I do not hear it in the other GX 550 2024 I have ridden in.

 

[YellowLab]

My understanding is that there is no fix. There is a fan they added to cool the engine and that is what makes the noise. Apparently, all GX and LX engines now have this fan, but I do not hear it in the other GX 550 2024 I have ridden in.

I do not hear the noise on my '24 OT+

 

[BryanM68]

I have no noise, 25 OT

 

[SaltWaterLife]

I just got a new 2025 OT and I hear it as well

 

[andywilliam]

https://www.reddit.com/r/MechanicAdvice/s/ZvDI1eJM2V

The noise like this, but a lot more smaller. Repeat every 20 30 seconds ( on driver side ) when driving only. No noise when stop or park

 

[teghogh]

25 OT. i 100% have had this noise from day one. it is not too annoying but definitely noticeable. i just assumed it it was the vents automatically turning on and off in AUTO mode.