I had an Oliso that was way past warranty that wouldn't auto shut off and I wanted it to. I called the company that had sold it to me, and they sent me a new one when I returned the old one. I only had to pay postage to return the old one. I couldn't believe it! Anyway, the new one now doesn't always shut off now, so I'm just trying to remember to manually shut it off. Not that any of that helps you...just thought you might want to call the place you bought it from. Maybe they can help. Cheaper irons don't always have auto shut off.