"It was a tremendous achievement to score our first win of the season in Melbourne last week, and it's given every single member of the team even greater enthusiasm for this weekend," Button said.

Button will attempt to win his second consecutive Malaysian Grand Prix on the tricky 3.44-mile, 15-turn Sepang International Circuit, located near Kuala Lumpur.

"I think we travel to Sepang mindful that the characteristics of the circuit probably won't suit our car as well as it will suit some of the others, but I'm confident that we'll be fighting at or near the front," Button added.

Last year's Malaysian GP was shortened from its scheduled 56 laps to 32 due to torrential rain conditions. Race stewards red-flagged the event when lightning struck around the circuit and visibility deteriorated. Half of the regularly distributed points were awarded since less than 75 percent of the race was completed.

McLaren and Ferrari indeed are back on track with their programs, with Button winning in Melbourne and Fernando Alonso taking the season-opener in Bahrain in his debut with Ferrari.

After the first two rounds this season, Ferrari is atop the F1 constructors' point standings, as the Italian team holds a 70-54 lead over McLaren.

One surprise so far this season is the sluggish start for Red Bull Racing, which finished second to Brawn GP in last year's constructors' points. Vettel placed his Red Bull car on the pole in Bahrain and Australia, but reliability issues plagued the young German at the two circuits.

Vettel led two-thirds of the way in Bahrain, but lost power and gave up the top position to eventual winner Alonso. He managed to finish fourth. Vettel was not as fortunate in Australia, where he suffered faulty brakes and drove off into the gravel before retiring with a 17th-place finish.

"We're working hard to get on top of the reliability issues, and we hope to have a solid race and see the checkered flag in Malaysia," Vettel said.

Vettel's teammate, Mark Webber, finished ninth in front of his home crowd in Australia. Webber and Lewis Hamilton from McLaren made contact twice.

In Bahrain, Webber's car had a plume of smoke come from his exhaust on the opening lap, but it was not a factor from there, as he finished eighth.