I can confirm that I have the engineering mode menu on my 2022 Elantra. It is the 8" display.
Steps:
1)Setup / General /SW Info
2)In the black space beside the update button..
3)On the left side, tap 5 times (near top left corner of black area)
4)On the right side, tap once (near top right corner of black area)
5)When prompted for pin, enter 2400
Done! It was a bit tricky, but after several tries, I got it.
Steps:
1)Setup / General /SW Info
2)In the black space beside the update button..
3)On the left side, tap 5 times (near top left corner of black area)
4)On the right side, tap once (near top right corner of black area)
5)When prompted for pin, enter 2400
Done! It was a bit tricky, but after several tries, I got it.