Aston Martin DB 9 2010 Manual page 80

Changing the Set Speed
There are three ways to change the set speed:
• Accelerate or decelerate to the desired speed then press SET (+
or -).
• Accelerate or decelerate to the desired speed by pressing and
holding SET (+ or –) until the desired speed is obtained, then
release.
• Accelerate or decelerate to the desired speed in steps of 1 mph
(2 km/h) by briefly pressing and releasing SET (+ or –) until the
desired speed is obtained.
4.18
Resuming the Set Speed
RES should only be used if the driver is aware of the set speed
and intends to return to it.
It is not recommended to resume set speed when a low gear
is selected as excessive engine speeds will occur.
Cruise Control will not resume at speeds below 22 mph
(35 km/h). RES will not operate if the ignition has been set to OFF.
If the vehicle is accelerated above the set speed, then the set speed
will be resumed when the accelerator pedal is released.
If CAN (4) is pressed, or the brake or clutch pedal is pressed, Cruise
Control will disengage but the set speed memory will be kept. Press
RES (1) and the vehicle will return to the set speed.
Cruise Control Automatic OFF
Cruise Control will automatically set to OFF and clear the memory
when:
• The ignition is set to OFF
• A fault occurs. The Cruise Control system will set to OFF and
cannot be used until the fault is cleared
• The parking brake is applied
• Maximum vehicle speed is reached
Cruise Control will automatically set to OFF but the set speed will stay
in the memory when:
• The CAN button is pressed
• The brake pedal is pressed
• Vehicle speed falls below 22 mph (35 km/h)