BAR are expecting to bounce back from crashing out in Canada with a strong showing in Sunday's US Grand Prix.
Button believes he can put his Montreal crash quickly behind him
Driver Jenson Button said: "We were very competitive in Indianapolis last year and I think we will be again.
"Montreal was good for us as we showed that the car is back on form. I think we can do great things."
BAR team boss Nick Fry said: "We will be going for it. Both drivers like the track and we will have fresh engines as neither car finished (in Canada)."
BAR shrugged off Button's crash in Canada, which happened while he was fighting for third place with Michael Schumacher's Ferrari after he had qualified on pole.
"We are proud of what he did and better for him to have an accident when he is challenging at the front than to be driving around in 10th," said Fry.
"The objective this year is to win a race, the championship position is clearly not important now and that was never our primary aim for this year anyway.
"We are just going to continue to race as hard as we can. We want try to find that elusive first win. I think we can get one.
"The car is fundamentally good, it has been going well, we messed up in Germany but in Canada we demonstrated what we can do."
BAR, who finished second in the world championship last year, have yet to score any points this season.
They had their only points finishes cancelled when they were disqualified from the San Marino GP and banned for two races for running an underweight car.
Follow the US Grand Prix live on the BBC Sport website. Qualifying is at 1900 BST on Saturday 18 June, with the race at the same time the next day.