I rarely use an automatic car wash as I worry about what they will do to the car's finish. Regardless, about once or twice each winter I just can't hold out any longer and it is still too cold for me to do my usual hand wash. The manual has numerous mentions regarding precautions for automatic car washes. Here is a snapshot of what I have gleaned from the manual. I welcome any debate on these settings as some seem a little extreme - but I asked one of the local Lexus Technology Specialists and they agreed with these settings. To be fair, I imagine they didn't want to contradict anything stated in the manual. This just seems like a lot in order to use an automatic car wash. The only time I have taken my NX through a car wash the only thing I did was turn off the rain sensing wipers (after the spray had already started because I forgot before entering the tunnel...). I haven't yet taken the RZ through an automatic car wash, but the manual was concerning enough to make me confirm with the Lexus staff.
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Prep for automatic car wash, per owner’s manual: Lexus ~2022+ models

Press "waffle" symbol beside Climate on center display and disable:
--> 1. Intuitive parking assist
--> 2. Parking support brake
On center display, touch gear icon, scroll to “Vehicle customize,” then Door control:
--> 3. Disable “Hands free” (manual actually states “disable power back door” so you could disable both to be safe)
On driver’s door mirror control and windshield washer lever:
--> 4. Fold in mirrors using the upper left-hand button
--> 5. Place windshield wipers to off (top position – excluding mist position)

** Reset features above to original settings before driving **
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In my opinion, disabling the parking assist is just to silence the noise. There are warnings about the parking support brake potentially mistaking the carwash equipment for an object in the vehicle's path and braking, thus causing the car to pop off the roller. The rear door concern may be a result of hand free feature accidentally triggering the rear door. Of course the mirrors and windshield wipers seem like common sense and are probably the only things most members here typically use.

Some of this has already been discussed, but I couldn't find anything that sort of brought it together in one list. I just wanted to offer it for anyone that may be interested - even if most of it doesn't seem to be set in stone.

 

I am in the same boat - I care and maintain my cars, even leased ones, and prefer NOT to introduce scratches from auto-car washes. However, in the dead of the winter, sometimes practicality wins over perfection.
I have taken RZ through a few winter car washes withOUT taking any of the precautions or custom settings you list below.
It all worked out perfectly fine.

Exactly.
RTFM is the safest position for dealer rep to take.

[QUOTE=TechNut;12012581]This just seems like a lot in order to use an automatic car wash.

Exactly.
Some of those recommendations are full-on silly (parking settings, hands free disable, mirror fold, etc).
Windshield wipers OFF recommendation is particularly "Captain Obvious" - why would they be on any other setting?

I don't futz with any of the settings, but then again, my wipers are in OFF position by default.
Other than that - do what makes you happy!

HTH,
a