Porsche 911 2020 Owner's Manual page 69

Information
The HOLD function can be activated by flooring the
pressed brake pedal while the vehicle is stationary.
This keeps the vehicle at an engine stop without
having to continuously press the brake pedal.
The engine starts automatically when the accelera-
tor pedal is pressed or when the engine needs to be
started.
Information
If Adaptive Cruise Control (ACC) is switched on, the
engine stops automatically when the vehicle is sta-
tionary if the vehicle ahead has also come to a
standstill.
The vehicle is held in a stationary position by the
HOLD function.
Engine start
b b Operating mode D, M, N or P selected.
e Release the brake pedal (not in operating mode
P).
– or –
e Press the accelerator pedal.
– or –
e Move the steering wheel.
– or –
e Select operating mode R.
You can drive off normally.
Information
The engine will start automatically in certain situa-
tions, e.g. in order to maintain a comfortable tem-
perature. In some cases, a message prompting you
to press the brake pedal will also be displayed on the
instrument cluster.
Information
If Adaptive Cruise Control (ACC) is active, the engine
starts automatically when the vehicle in front moves
off again.
Reaction after leaving the vehicle
After leaving the vehicle after the engine has stop-
ped automatically (driver's seat belt unfastened,
driver's door open and brake pedal released), the
engine will not start automatically. Additionally, in
operating mode D, R or M:
– The electric parking brake is engaged.
– The transmission parking lock P is engaged.
The vehicle can still be moved with the driver's door
open and the driver's seat belt unfastened by re-
leasing the electric parking brake manually. In this
case, the parking brake remains released and the
selected transmission range is still engaged.
If the parking brake is released in operating mode D,
R or M, or if operating mode D, R or M is selected
while the brake pedal is pressed, the engine starts
again.
Auto Start Stop mode is resumed if one of the fol-
lowing conditions is detected within 30 seconds of
leaving the vehicle:
– The brake pedal is pressed and either the driver's
door is closed or the driver's seat belt is fastened.
– or –
Auto Start Stop function
The driver's door is closed and the driver's seat
belt is then fastened.
– or –
The accelerator pedal is pressed with the driver's
door closed and the driver's seat belt fastened.
Switching off the Auto Start Stop function within 30
seconds after leaving the vehicle results in an engine
start only after the driver's door has been closed and
the seat belt has been fastened. If none of these re-
quirements are met, the engine has to be started
manually 30 seconds after leaving the vehicle. A
message prompting you to start the engine manually
appears on the instrument cluster.
> Please see chapter "Starting and Stopping the
Engine" on page 245.
> Please see chapter "Seat Belts" on page 229.
Exceptional conditions for the
Auto Start Stop function
The Auto Start Stop function is not available in the
following cases:
– SPORT/SPORT PLUS driving programs active.
– PSM switched off or in Sport mode.
– Front axle lift system active.
– "Maximum cooling" function is activated.
– "Defrost windshield" function is activated.
– At high altitudes.
The Auto Start Stop function is only available to a
limited extent in the following cases:
– When the demands placed on the air condition-
ing or interior heating are high.
– When the battery charge is low.
– On upward or downward slopes.
– During internal tests, e.g. automatic engine
diagnostics.
– When the outside temperature or battery tem-
perature is very low or very high.
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