This is my 2007 Audi A3 tdi sport 170bhp diesel it has started making this rattle noise when I switch off the engine also it bleeped the other day when I turned on the ignition and would not let me fully accelerate(power loss) but when I turned it off it didn't make the noise and restarted it kind off reset it and went back to normal. But today the engine management light come on for the day but as I have just made the video the engine light has gone could someone please help as I'm stuck for what the problem is thanks. Here's the video I just made