Im looking at buying a focus st 55 plate. Body and engine look really good. Took for a test drive and was beautiful. When extending the revs on two occasions there was a mini beep noise with no messages or lights on the dash. The car had been ticking over a good 20 minutes before i drove off as he had to dig it out from a court full of cars. Is it something i should worry about. Ive never owned a ford and could do with a little help cheers