Good video shown above!
One weird thing is that on my 2002 Export CRD I have to do 4 rapid ON/OFF actions to the ignition ON position and on the 4th action leave it ON.
Seems to be an Export Jeep factor as members in Australia have to do the same actions as I do.
Some facts with this Key Trick are:
The code only gets stored once so although you may have constant occurances of this code happing you will only see it once.
The codes display in order from the oldest to the newest and after that the odometer reading displays.
There have been warnings that sometimes the last two digits of the code are transposed..not a problem if this code does not exist but a big waste of time if this incorrect code does actually exist in your list.
You cannot erase the codes. I see that USA owners can seem to clear codes by disconnecting the battery for a day with the positive battery lead moved over to touch the chassis but this has never worked on my Export model.
I have used this action many times on my 17 year old Lady with great success...on long trips I make sure I have my Laptop on board with me with all the documentation loaded!