See also:

Volume of spoken instructions
Turn the volume button while giving an instruction until the desired volume is set. The setting is stored for the remote control currently in use. ...

Look well ahead when driving
Avoid unnecessary acceleration and braking. By maintaining a suitable distance to the vehicle driving ahead of you. Driving smoothly and looking ahead reduces fuel consumption. ...

System limits
Speed range Best results are achieved when using the system on well-developed roads and highways. The desired speed can be selected between 20 mph/30 km/h to 110 mph/180 km/h. The system can al ...