I am a new Lexus owner. 2000 GS300. I don't have the service manuals for the car yet. The check engine light came on. In the past with my older cars, I have been able to activate a "blink system" and count the blinks to come up with a trouble code and look it up in the sevice manual. Will I be able to do this with the Lexus or do I have to go buy an expensive OBD II scanner? Are there any good alternatives to buying the three factory service manuals for this car? I have downloaded a one thousand one hundred and eleven page service mnual but it seems incomplete. No wiring diagrams. No Mil trouble codes. Or am I just behind the times? Slightly Confused Dan