Weird noise garage can't find

[HaylesTu]

Hi all. I have a 2009 auris who has been good as gold the last 6 years. Always passed her MOT never cost much money etc. 

However about a month ago it started doing the weird noise like a rotational chug. Which also judders the car. Seems to be when i slow down to pull in or at lights. If I do the old IT trick of switching on and off again it goes back to normal. The Toyota garage can't replicate it even with the video for reference they don't know. Then last night it wouldn't switch on again but after half an hour it was fine. 

It's had a couple of quirks before like when I've had to slam the brakes on which then meant all the lights on the dashboard lit up like Christmas. Again the garage couldn't find anything wrong and referred to the car as a 'spooked' animal. 

I'm just worried this is an actual problem but I don't know why the garage can't find it. Anyone else had similar?

[TonyHSD]

Hi, 

what engine and transmission and what is the current mileage? 
Any videos to share ? 
Thanks