And as Heynckes led Bayern to the Champions League title in 2013 before ending his third period in charge, he has now won 11 successive matches in the competition.
The World Cup in Russian Federation begins on June 14, with coaches naming provisional 30-man squads by May 14.
"Besiktas hadn't lost here in the Champions League, so it wasn't easy".
However, despite that healthy advantage, Bayern boss Jupp Heynckes has warned his team against complacency in the Turkish capital. "You have to go out to win each game irrespective of the first leg".
"We have several experienced players in our squad".
Thiago, back after injury, celebrated his first Champions League goal since netting in the 3-0 win at home to Anderlecht last September. On Wednesday, Besiktas host the Bundesliga leaders in Istanbul, needing a miracle to advance to the quarterfinals.
Bayern cruised to a 5-0 win at home in the first leg on February 20 behind braces from Robert Lewandowski and Thomas Muller. Besiktas was playing in the knockout stages for the first time after topping its group ahead of Porto, Monaco and Leipzig. However, Besiktas will be without center-backs Pepe, who suffered a broken toe and Domagoj Vida, who will serve his red card suspension. "It is normal for the team to relax from time to time and now show the desired performance, but we scored eight goals in two games of the round of 16 and this shows how good a team we are", Heynckes told reporters via a translator.