The Dutchman's current deal expires in 2015 and Hoeness is optimistic a new offer will be accepted in good time.
"There are still 18 months to go so I don't get what all the fuss is about," Hoeness told Kicker magazine.
"Arjen knows what he's got here and we know what we've got with him.
"He's not putting us under any pressure and we're not putting him under any either. We will find a solution when the time is right."
Robben moved on to 51 career Bundesliga goals at the weekend with a brace helping Bayern beat Eintracht Braunschweig and make it 39 games in a row without defeat.
They lead the Bundesliga by four points from Bayer Leverkusen, who face third-placed Borussia Dortmund, who are a further three points behind, next weekend.