Here are the tips to generate and modify Xhorse Toyota XM38 key for a Lexus rx350, FCCID: HYQ14FBB (231451-0010 “G” Board).
User report:
“Did a 2019 Lexus rx350 using xhorse XM38 and these are the settings that worked for me proximity and remote functions worked.
This one was especially for this key.
You can edit them manually. When you’re on the remote screen, on the bottom left there’s a “more” option. After that, select modify button-distance and then you can read the key after being generated.