BMW 745 2002 Owner's Manual page 77

Maintain pressure on button 4 for approx.
3 seconds. The system adopts and
displays your current speed as a preset
speed.
If all of the graduations flash at once
this indicates that 6 speeds have
already been stored. You must then delete
at least one.<
To delete preset speeds
Select the desired preset speed 5.
Maintain pressure on button 4 for approx.
3 seconds. The desired preset speed is
deleted.
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