To adjust the power tailgate opening height, select 'User Settings → Door/Tailgate → Power Tailgate Opening Height → Full Open/Level 3/Level 2/Level 1/User Height Setting' in the instrument cluster or 'Settings → Vehicle → Door/Tailgate → Power Tailgate Opening Height → Full Open/Level 3/Level 2/Level 1/User Height Setting' in the infotainment system.

See additional information in supplied Infotainment Manual.