PEUGEOT 3008 Handbook page 238

Driving
To modify the cruise speed setting using the
speed suggested by the speed limit recognition
system:
F the speed suggested is displayed in the
instrument panel,
F make a first press on button 5; a message
is displayed to confirm the memorisation
request,
F press button 5 again to save the suggested
speed.
This value is then displayed in the instrument
panel as the new cruise speed setting.
As a precaution, it is recommended
that the cruise speed chosen be close
to the current speed of your vehicle, so
as to avoid any sudden acceleration or
deceleration of the vehicle.
236
Temporarily exceeding the
programmed speed
When required (overtaking manoeuvre...), it is
possible to exceed the programmed speed by
pressing the accelerator pedal.
The cruise control is temporarily overridden
and the programmed speed setting flashes.
To return to the programmed speed, simply
release the accelerator pedal.
Once the vehicle has returned to the
programmed speed, the cruise control takes
over again: the display of the programmed
speed setting becomes steady again.
When descending a steep hill, the
cruise control system cannot prevent
the vehicle from exceeding the
programmed speed.
You may have to brake to control the speed of
your vehicle. In this case, the cruise control is
automatically paused.
To activate the system again, with the speed
of the vehicle above 25 mph (40 km/h), press
button 4.
Switching off
F Turn the thumbwheel 1 to the "0" position:
the cruise control information disappears
from the screen.