dont get me wrong you can get good scanners but dont bother with anything like that get vagcom it is worth it trust me i am a autoelectrition and do this every day and there are so many cheep scanners out there and some will lead you in totaly the wrong direction if you are going to invest in a scanner get vagcom and get a proper lead aswell not a cheap copy from ebay there are real leads on there too but be careful what you get as some can do more damage than good
i can scan your car with vagcom or VAS for £25 and give you a full report printed out on all units on the car engine ecu,abs,airbags the lot and any time mate im open at work from 9 till 6 and on a sat 9 till 1 just let me know and pop down