PEUGEOT 308 Handbook page 144

Driving
Modification of the cruise
control speed only
Buttons 2 (SET+) and 3 (SET-)
If the cruise control is on, you can modify the
speed:
 by successive short presses, to modify by
steps of + or - 1 mph (km/h),
 by a maintained press, to modify in steps
of + or - 5 mph (km/h).
As a precaution, it is recommended that you
select a cruise speed setting close to the
current speed of your vehicle.
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Modification of the cruise
control speed and/or the
inter-vehicle time
Button 5 (MEM)
Press button 5 , the six memorised speeds and
the inter-vehicle time setting are displayed in
the touch screen.
 Choose a speed setting: it is displayed in
the instrument panel,
 press or the " + " or " - " button to choose
a new inter-vehicle time setting between
2.5 seconds and 1 second.
The selection screen closes after a few
moments. The modifications are then accepted.
In the event of the presence of a
vehicle detected by the radar, if the
speed selected is much higher than
the speed of that vehicle, the system
is not activated and the alert message
"Activation not possible, conditions
unsuitable" is displayed until driving
conditions are safe to allow activation of
the system.
Exceeding the programmed
speed
It is possible to exceed the programmed speed
temporarily by depressing the accelerator
pedal. Simply release the accelerator pedal to
return to the programmed speed.
If the programmed speed is unintentionally
exceeded, descending a steep hill for example,
the speed setting in the instrument panel
flashes as a warning.