Lexus NX450h+ 2022 Owner's Manual, Quick Manual page 24

When Driving
Operations when turning left or right or changing lanes
22
1 Move the lever to position 1.
The right turn signal lights will blink.
2 Move the lever to position
The right hand signals will flash 3 times.
3 Move the lever to position
The left hand signals will flash 3 times.
4 Move the lever to position 4.
The left turn signal lights will blink.
2 and release it.
3 and release it.