What is up with A4 check engine lights?

[Tihol Tiholov]

> ... What you can do to help you choose a car is to bring with you a code
reader (75$ for a generic one on ebay) or, if you're into VAG products
for many years to come, buy yourself a VAG-COM software/cable an use a
laptop to read the codes and erase them from the eprom.

Can also find a VAG-COM owner in your area and have the code(s) read for
little (most dot it for beer).

http://www.steve-hall.com/cgi-bin/VAG-Locator.pl