Honda Accord problems?

I have a 2015 Honda Accord. Sometimes when I start it up, it makes a weird noise and the lights cut on but not the engine. I have to wait a second and try and it usually works. Sometime my brakes lock up. I went to o Riley and they put it on 2 different machines and said nothing's wrong. Anyone else have this problem? I'm not sure if I'm just moving too fast and clicking the button first and then the brakes or what. Can you press them at the same time or do i apply Brakes first. Help.

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