Aston Martin DB 9 2010 Manual page 89

Make sure that you are wearing appropriate footwear to
efficiently operate the control pedals. Make sure that pedal
movement is not restricted by floor mats or other objects trapped
.
beneath pedals
Insert the key to position 'II' by using
the flat of a finger, as shown.
Check that the parking brake is applied.
Insert the vehicle key into the Ignition
Control and gently press the key until it is
flush with the Ignition Control bezel and release (position 'II').
Fully press the:
Automatic Only - Brake pedal down.
Manual Only - Clutch pedal down.
The Ignition Control will show red.
Press the key fully into the Ignition
Control, hold in until the engine starts
and release.
The vehicle key will sit flush with the
Ignition Control bezel while the engine
is running. The Ignition Control will
show a white light when the engine is
running, and then fade out.
The engine will not start until the Ignition Control shows red. The
Ignition Control will show red only if the brake (automatic) or clutch
(manual) pedal is fully pressed down and the steering lock has
released.
If the engine fails to start the vehicle key must be returned to position
'I' to crank the engine again.
Press the key fully in, without depressing the brake (automatic) or
clutch (manual) pedal, and release. The key will gently return to
position 'I'. Start the engine start procedure again.
Engine Quick Start
1. Check that the parking brake is applied.
2. Fully press the brake (automatic) or clutch (manual) pedal down.
3. Insert the vehicle key into the Ignition Control and press the key
fully in, hold in until the engine starts then release.
When moving straight to engine start the vehicle system will take
short time (approximately 1.4 seconds) to complete a system check
and release the steering lock before allowing the engine to crank.
Starting From Cold
The Engine Control Module (ECM) automatically compensates for
cold or warm start conditions and makes appropriate adjustments to
the fuel and air mixture and ignition timing.
5.3