Starting The Engine - Aston Martin Vantage S 2016 Owner's Manual

Driving Through Deep Water
If in any doubt whether to drive through deep water, always take the
side of caution to avoid potentially costly damage to the vehicle's
engine or other essential systems.
Never drive in water deeper than the lower edge of the front
bumper. Water can be splashed up into the engine air intakes
located in the front upper grille and cause extensive damage to
the engine or the vehicle may stall. Always proceed with extreme
caution, especially when the depth is not known.
When driving through water, traction or brake capability may be
limited. Once through the water, always dry the brakes by driving
slowly while applying light pressure on the brake pedal.
Waves caused by other vehicles or natural causes can also splash
water in the engine air intakes.

Starting the Engine

Warning: Only use the vehicle key in the ignition control. Do
not place any objects, including fingers, into the ignition control
other than the vehicle key. Objects other than the vehicle key
may cause the ignition control unit to fail.
In extreme low temperatures (-20°C and below) do not allow
the engine to 'rev' above 4000 rpm, while at standstill or when
moving off, until the coolant temperature gauge reaches normal
operating temperature. Revving the engine before fully warmed
up may cause severe engine and transaxle damage.
Do not press the vehicle key while driving. If the key is pressed
in and released the engine will stop. If the key is removed from
the ignition control while driving the engine will stop but the
steering lock will not engage until the vehicle has come to a
complete stop.
The vehicle key must only be inserted
into the ignition control with the two
indents first, as shown. Attempting to
insert the larger end of the key first may
damage the ignition control.
Ignition Sequence
[1] : Position '0' (Ignition OFF)
[2] : Position 'I' (Ignition OFF and Accessories ON)
[3] : Position 'II' (Ignition ON)
[4] : Engine start
5.3