Hi All

I am a complete newbie here. I have owned my vectra from new since 2003.

I have had this problem since new, and taken my car in several times. Each time being told there is no issue with the car.

I have found that if I go on a long distance trip, motorways etc I will get the service management light and emergancy mode every 100 or so miles.

I am not using cruise control or anything.

When I pull over, I turn the car off and on again, and its all fine.

Any ideas people? Apprently no fault codes when I ask VX