[MartinLe]

Originally Posted by Kerry

Ck engine light should be on indicating that its in service mode to do flash. This is exactly how I do mine as quoted above. If after I flash and do not go into acc mode key on key off then back on then it will start. If i just turn off then back on and try to start all it will do is clunk once. Then just turn off and back on hit break and it will start

I have always done it as I described it and never had any issues. Just to be clear, the "ignition on" selection is not the same as the "accessory on" selection. But, if your car is accepting the write with your method, I wouldn't worry about it.