Sep.23 (GMM) Singapore winner Sebastian Vettel was summoned to the stewards late on Sunday night.
And Button told reporters: "I closed my eyes, I didn't know what was going to happen.
"Seb is in control of the pace but when someone accelerates, you don't expect them to brake (immediately). I was very close to him and locked up the front but managed to avoid him."
Button was also summoned to the stewards.
"Jenson has had a conversation with me, he initiated it," he told the BBC.
"He's an immensely competitive individual, but he's a team player. Things that happen in the future will come from within him. I'll never ask and I don't want to ask.
"If he chooses to do soemething in the best interest of the team, that's up to him."