the diplay on the left of the cluster on the mk1 a6 ,it has about 6 lights in ,airbag,seatbelt, trailer flickers,immobiliser,check engine and i think theres one more..., how many of these lights should illuminate when car is started??? before i had my a/c repaired , my airbag andimmobiliser light came on momenteraly on starting, afterwards the airbag and seatbelt light came on since.....what all shud illuminate???