FCB surprisingly struggled to claim the three points against Jos Luhukay's team, but the coach had already expected a difficult game, and wasn't too concerned about his team's display.
"All that matters during this phase of a game every three days, is winning, and that's what we've done," Heynckes stated at a press conference.
"I always knew it would be tight, and I believe I've been proven right. Augsburg drew away to Hannover and Bremen, and at home to Dortmund. They’re a very good unit and well-organised.
"We didn't find a way to break them down in the first half, we were hesitant and too slow. We hit the gas after the break."
Bayern lock horns with title rivals Borussia Dortmund at the Signal Iduna Park on Wednesday. They're currently trailing the Bundesliga leaders by three points.