i am having the same problem with my auto espace. 01 model, 1998cc. it will drive off normally but within 1 mile the alarm goes off and the box with zigzag lines appear and the gearbox goes back to 3rd gear and wont go to 4th. this only happens when the car is cold. when i stop and turn the engine off and on again it is fine. i have it in with the specialists again (just paid 2500 euro for my box to be rebuilt) and hope to find something out tomorrow, at the moment they cant find a problem. but he will start it from cold tomorrow morning. this has happened to me for the last 4 mornings so it must happen again tomorrow. i will post with news when i get the results
jason collier, April 2009