See also:

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...

The concept
The automatic engine start-stop function helps save fuel. The system switches off the engine during a stop, e. g., in a traffic congestion or at traffic lights. The ignition remains switched on. ...

Resuming the original route
If the route section should no longer be bypassed: 1. "Navigation" 2. "Route information" 3. "New route for:" 4. "Remove blocking" ...