Scharner turned 33 earlier this month, but he is adamant there is plenty of football left in him.
"I wouldn't like to put a figure on it, but my own target is to play for a few more years yet," he told the Wigan Observer. "Where that will be, I don't know.
"But it's not the right time to be speaking about my future, to be honest.
"I am totally focused on the matches between now and the end of the season, and nothing else. Of course I am very happy here at Wigan, but let's get the next 11 matches out of the way before we talk about the other stuff."