152 Driving and Driving Safety
Auto Start Stop Function
The engine stops automatically when the vehicle is
stopped, e.g. at traffic lights or in a traffic jam.
The Auto Start Stop function thus helps to save
fuel.
The ignition stays on even when the engine
switches off automatically. All safety functions are
still available.
Stopping the engine
The Auto Start Stop function stops the engine
shortly after the vehicle stops moving.
1. Use the footbrake to stop the vehicle.
2. Keep the footbrake pressed.
or
Move Tiptronic selector lever to position P.
Preconditions for stopping the engine
– Auto Start Stop function switched on.
– Engine compartment lid closed.
– Driver detected: driver’s safety belt fastened
and driver’s door closed.
– Tiptronic selector lever in position D, N or P or
transmission range 1 or 2 selected manually.
– Engine, transmission and battery are at
operating temperature.
– Vehicle was driven at a speed of more than
approx. 1 mph (2 km/h) for at least
1.5 seconds since the engine last stopped
automatically.
Starting the engine
The Auto Start Stop function starts the engine:
f In Tiptronic selector-lever position D, N or
manually selected transmission range 1 or 2
Release the footbrake.
or
Press the accelerator.
or
f Move Tiptronic gear selector to position R.
You can drive off normally.
Information
The engine will start automatically in certain
situations, e.g. if the vehicle starts rolling, if air
conditioning causes reduced comfort, or if the
brake vacuum is reduced.
Starting the engine manually after leaving
the vehicle
If the driver’s safety belt is unbuckled or the
driver’s door is opened after the engine was
stopped automatically, the engine will not start
automatically.
Furthermore, if the brake is released, the engine
has to be started manually.
The message “Please start engine manually” will
appear on the multi-purpose display of the
instrument panel.
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 139.
Exceptions for the Auto Start Stop
function
The Auto Start Stop function is not available in
the following situations, for example:
– When Sport mode is activated.
– When PSM is off.
– In Maneuvering mode.
– When AC MAX mode is activated.
– When the “windshield defrost” function is
active.
– When an attached trailer is detected.
– While adjusting the chassis level.
– When the rear fog light is on.
– When the off-road driving program is active.
– When windshield heating is on.
– At altitudes of more than approx. 2500 m
(Cayenne S and Cayenne Turbo only).
f The Start Stop function must be deactivated
manually if a trailer hitch from another
manufacturer is installed on the vehicle.
For information on switching off the Start Stop
function:
f Please see the chapter “SWITCHING AUTO
START STOP FUNCTION ON AND OFF” on
page 153.
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