2009 PORSCHE PANAMERA stop start

Driving and Driving Safety
167
Starting and Stopping the EngineThe immobilizer can be deactivated and the
engine started only using an authorised
ignition key.
fPlease see the chapter “IMMOBILIZER” on
page 250.
Warning!
Risk of poisoning. Exhaust gas contains
colorless and odorless carbon monoxide
(CO), which is toxic even in low
concentrations. Carbon monoxide can cause
unconsciousness and even death if inhaled.
f Never start or let the engine run in an
enclosed, unventilated area. It is not
recommended to sit in your car for prolonged
periods with the engine on and the car not
moving.
An unattended vehicle with a running engine
is potentially hazardous. If warning lights
should come on to indicate improper
operation, they would go unnoticed.
f Never leave the engine idling unattended.
Danger of fire close to the hot exhaust
system.
f Do not park or drive your vehicle where
combustible materials, such as dry grass or
leaves, can come into contact with the hot
exhaust system. For information on the emission control system:
f
Please see the chapter “EMISSION CONTROL
SYSTEM” on page 262.
f If your car catches on fire for any reason, call
the fire department. Do not endanger your life
by attempting to put out the fire.
Starting the vehicle f Operate the footbrake.
f Move PDK selector lever to position P or N.
f Do not press the accelerator pedal.
The engine control unit will provide the correct
starting mixture.
f Turn the ignition key or control unit (Porsche
Entry & Drive) to ignition lock position 2.
The starting process is carried out and
completed automatically as soon as ignition
lock position 2 (start engine) is reached.
The ignition key or control unit is reset
automatically to ignition lock position 1
(ignition on).
f Do not operate the starter for more than
approx. 10 seconds. If necessary, repeat the
starting procedure after a pause of approx.
10 seconds. Turn the ignition key back to
ignition lock position 0 (initial position) first.
The first operation of the starter is ended
automatically when the engine starts.
If the engine does not start, subsequent
starter operations will not be ended
automatically.

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Driving and Driving Safety
f
Do not warm up the engine when stationary.
Drive off immediately. Avoid high revs and full
throttle until the engine has reached operating
temperature.
f If the vehicle battery power is too weak, the
engine can be started with jump leads.
For information on jump-lead starting:
f Please see the chapter “EXTERNAL POWER
SUPPLY, JUMP-LEAD STARTING” on
page 306.
Note on operation
To ensure a good battery charge condition,
thereby ensuring that the battery will start the
engine, all electrical loads that are not required
should be switched off when the ignition is
switched on and when engine revs are low
(in traffic jams, in city traffic or in queues).
Stoppingf Only remove the ignition key when the vehicle
is stationary.
f Only switch the ignition off when the vehicle is
stationary, as there is no power steering and
brake booster assistance when the engine is
switched off.
f When leaving the vehicle, always remove the
ignition key, apply the electric parking brake
and engage selector-lever position P .
The control unit always remains in the ignition
lock on vehicles with Porsche Entry & Drive .
Warning!
Danger of injury. Hot engine compartment
components can burn skin on contact.
f Before working on any part in the engine
compartment, turn the engine off and let it cool
down sufficiently.
Risk of burn injury when standing near or
coming into contact with the exhaust pipe.
The exhaust pipe is hot wh en the vehicle is running
and remains hot for some time after the vehicle is
turned off. f
To prevent injury, make a point of noting where
your vehicle’s exhaust pipe is, avoid placing
your legs near the exhaust pipe when loading
and unloading cargo in the rear, and closely
supervise children around the vehicle during
time when the exhaust pipe could be hot.
A hot exhaust pipe can cause painful skin
burns.
Radiator fanFor information on radiator fans:
f Please see the chapter “RADIATOR FANS” on
page 258.
Warning!
Danger of injury. After the ignition is
switched off, the engine compartment and
coolant temperatures are monitored for
approx. 30 minutes. During this period, and
depending on temperature, the radiator fan
may continue to run or start to run.
f Carry out work in these areas only with the
engine off and exercise extreme caution,
always anticipating that the fan blade could suddenly start to run.

Driving and Driving Safety
169
Auto Start Stop FunctionThe 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 engineThe Auto Start Stop function stops the engine
as soon as the vehicle stops moving.
1. Use the footbrake to hold the vehicle in place.
2. Keep the footbrake pressed.or
Move PDK selector lever to position P.
Preconditions for stopping the engine
– Engine compartment lid closed.
– Driver detected: driver’s seat belt fastened and driver’s door closed.
– PDK 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 engineThe Auto Start Stop func tion starts the engine:
f In PDK selector-lever position D, N or manually
selected transmission range 1 or 2:
Release the footbrake.
or
Press the accelerator.
or
f Move PDK selector lever to position R.
You can drive off normally.
Note
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 booster vacuum is reduced.
Starting the engine manually after leaving
the vehicle
If the driver’s seat 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-function display in the
instrument panel.
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.
Exceptions for the Auto Start Stop
functionThe 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.
– While adjusting the chassis level.
– When the rear fog light is on.
The Auto Start Stop fu nction is available with
limited functionality in the following situations,
for example:
– If the air conditioning or passenger compartment heating is operated at a high
setting or if the defrost function is run for long
time periods.
– If the battery charging condition is low.
– On upward or downward slopes.
– During internal vehicle test procedures, e.g. automatic engine checks.
Note
If one of these situations arises after the engine
has stopped automatically, the engine can be
restarted automatically.

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Driving and Driving Safety
Switching Auto Start Stop function off
f
Press button .
The indicator light on the button lights up.
The engine’s Auto Stop function is disabled.
Switching Auto Start Stop function on
f Press button .
The indicator light on the button goes out.
The engine stops automatically when the
vehicle stops.
Auto Start Stop function displayIf the engine was stoppe d automatically by the
Auto Start Stop function and if the driver is
detected in the vehicle (driver’s seat belt fastened
and driver’s door closed), the indicator light on the
multi-function display in the instrument panel will
light up green.
If the Auto Stop function is not available or if no
driver is detected in the vehicle after the engine
has stopped automatically (driver’s seat belt open
or driver’s door open), the indicator light on the
multi-function display in the instrument panel will
light up yellow when the vehicle is stationary.
The Auto Start Stop system has detected that:
– At least one precondition for stopping the engine automatically is not met.
or
– There is at least one exception for the Auto Start Stop function.
For information on preconditions for stopping the
engine automatically:
f Please see the chapter “PRECONDITIONS FOR
STOPPING THE ENGINE” on page 169. For information on exceptions for the Auto Start
Stop function:
f
Please see the chapter “EXCEPTIONS FOR
THE AUTO START STOP FUNCTION” on
page 169.
Note
If the indicator light in the multi-function display
continuously lights up yellow when the vehicle is
stopped and if the engine does not stop regularly
when the vehicle is stoppe d despite the fact that
the preconditions for stopping the engine
automatically are met, this may be an indication
that the battery is weak.
f Have the Auto Start Stop system checked the
next time you visit an authorized Porsche
dealer.
Fault reporting
If there is a fault, the warning message “Start/
Stop mode deactivated” will appear on the
multi-function display in the instrument panel.
f Have the fault corrected at an authorized
Porsche dealer.
Switching Auto Start Stop function on
and off
Stopping the engine automatically
and restart readiness
Engine does not stop or is not ready
to restart

Driving and Driving Safety
171
Electric Parking BrakeThe electric parking brake acts on the rear wheels
and serves to secure the vehicle while parked.Applying the parking brakefPress switch .
The brake warning light on the instrument
panel lights up.
For information on indi cator lights and warning
lights on the instrument panel:
f Please see the chapter “INSTRUMENT PANEL
USA MODELS” on page 107.
Releasing the parking brakeThe electric parking brake can only be released
when the ignition is switched on.
1. Press the brake pedal.
2. Pull switch .
The brake warning light on the instrument
panel goes out.Automatic electric parking brake release
when driver’s intention to drive off is
detectedIf the engine is running, the driver’s door is closed
and the driver’s seat belt is fastened, it is still
possible to drive off even though the parking
brake is on. The electric parking brake detects
the driver’s intention to drive off and releases
automatically. The warning light on the instrument
panel goes out.
If the driver’s door is not closed or the driver’s
seat belt is not fastened, the electric parking
brake will not be released automatically when the
driver attempts to drive off.
The message “Release electric parking brake”
appears on the multi-function display in the
instrument panel. The brake warning light on the
instrument panel and the indicator light on the
switch start to flash.
For information on warning messages on the
multi-function display:
fPlease see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.
Emergency braking functionIf the conventional brak e system has failed, the
vehicle can be decelerated quickly and braked to
a stop using the electric parking brake.
f Press switch and keep it pressed.
The brake warning light on the instrument
panel and the indicator light on the switch
start to flash. The messa ge “Emergency brake
function” appears on the multi-function display.
The emergency braking function is deactivated
when you release the switch.
Safety instruction!
Severe braking. Emergency braking takes
place with very high braking power.
f Only use the emergency braking function in an
emergency situation.
f Do not use the emergency braking function to stop the vehicle when driving normally.

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Driving and Driving Safety
If the electric parking brake could not be applied
fully when the vehicle is stopped, the brake
warning light on the instrument panel starts to
flash.
For information on warning messages on the
multi-function display:
f
Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.
BrakesfMake it a habit to chec k the operation of your
brakes before driving.
Keep in mind that the braking distance increases
very rapidly as the speed increases. At 60 mph
(100 km/h), for example, it is not twice but four
times longer than 30 mph (50 km/h). Tire traction
is also less effective when the roads are wet or
slippery.
f Therefore, always maintain a safe distance
from the car in front of you.Vehicles without Porsche Ceramic
Composite Brake (PCCB)Even though the brake discs consist of alloyed
grey cast iron, they will unavoidably start to
corrode if your car is parked for an extended
period. The brakes will tend to “rub” as a result.
The nature, extent and effects of corrosion
depend on the amount of time the vehicle was
parked, whether road salt or grit was spread and
whether grease-dissolving agents were used in
car washes.
If the braking comfort is noticeably impaired, we
recommend having the brake system checked by
experts at an authorized Porsche dealer.
Brake system functionYour Porsche is equipped with a power assisted
hydraulic dual circuit brake system with disc
brakes at the front and rear.
Both circuits function independently. One brake
circuit operates the front left and rear right wheel
and the other operates the front right and rear left
wheel.
If one brake circuit has failed, the other will still
operate. However, you will notice an increased
pedal travel when you apply the brakes. Failure of
one brake circuit will cause the stopping distance
to increase.
Warning!
Risk of an accident, resulting in serious
personal injury or death.
In the unlikely event of hydraulic failure of
one brake circuit:
f Push the brake pedal down firmly and hold it in
that position. A mechanical linkage activates
the second circuit, and you will be able to bring
the vehicle to a stop.
f After bringing your vehicle to a complete stop,
avoid driving the vehicle and instead have it
towed to the nearest authorized Porsche dealer for repair.
Brake warning light USA
Brake warning light Canada

Driving and Driving Safety
199
StoppingfFor a brief stop, e.g. at traffic lights, leave the
selector lever in drive position and hold the
vehicle with the brake pedal.
f Do not hold the vehicle on a slope using the
accelerator. Use the brake pedal or the
electric parking brake instead.
f Before leaving the vehicle, always apply the
electric parking brake and move the selector
lever to position P.Parkingf Go easy on the accelerator!
f When parking or maneuvering in a small
space, control the speed by careful use of
the footbrake.Driving in winterIn wintry road conditions, it is advisable to take
steep inclines in manual mode. This prevents gear
changes occurring that could cause wheel spin.Tow-starting, towingfPlease see the chapter “TOWING” on
page 316.
Reduced driving programIf there is a fault in the transmission
– Depending on priority, either the “Gearbox
emergency operation” warning in yellow or red
or the warning “Gearbox temperature too high”
will appear on the multi-function display.
“Gearbox emergency operation” warning in
yellow
Effects:
– Restricted gearshift comfort, reverse gear may not function.
Action required:
f Have the fault corrected immediately.
Please contact a qualified specialist workshop.
We recommend that you have an authorized
Porsche dealer to do this work as they have
trained workshop personnel and the necessary
parts and tools. “Gearbox emergency operation” warning in red
Effect:
– Vehicle can be driven
only until it comes to
astop.
Action required:
f It is not possible to continue driving. Stop the
vehicle immediately in a suitable place. Have
the vehicle towed to a qualified specialist
workshop.
f Please see the chapter “TOWING” on
page 316.
Warning “Gearbox temperature too high”
–Effects: “Warning jerks” can be fe lt when driving off and
the engine power may be restricted.
Action required:
Do not hold the vehicle with the accelerator on
a hill, for example. Hold the vehicle with the
brake. Reduce engine load. Stop the vehicle in
a suitable place if possib le. Allow the engine to
run in selector-lever position P or N until the
warning disappears.

Driving and Driving Safety
203
Advantages of PSM
– Best possible traction and lane-holding ability
in all driving situations – even on road surfaces
with varying friction.
– The system compensates for undesired vehicle reactions (Ferraria effect) when the
driver releases the accelerator pedal or brakes
on bends. This compensation functions up to
the maximum lateral acceleration.
– PSM actively stabilises the vehicle if necessary during dynamic driving maneuvers (e.g. rapid
steering movements, during lane changes, or
on alternating bends).
– Improved braking stability on bends and on different or varying road surfaces.
– Improved brake function and shorter stopping distance in the event of emergency braking. Readiness for operation
PSM is switched on automatically every time you
start the engine.
Function
Sensors at the wheels, brakes, steering system
and engine continuously measure:
–Speed
– Direction of travel (steering angle)
– Lateral acceleration
– Axial acceleration
– Rate of turn about the vertical axis
PSM uses these values to determine the direction
of travel desired by the driver.
PSM intervenes and corrects the course if the
actual direction of motion deviates from the
desired course (steering-wheel position):
It brakes individual wheels as required.
If necessary, PSM also influences the engine
power or the gear-changing characteristic of
Porsche Doppelkupplung (PDK) in order to
stabilise the vehicle. The events below inform the driver of PSM control
operations and warn him to adapt his driving style
to the road conditions:
– PSM warning light on the instrument panel
flashes.
– Hydraulic noises can be heard.
– The vehicle decelerates and steering-wheel forces are altered as PSM controls the brakes.
– Reduced engine power.
– The brake pedal pulsates and its position is changed during braking.
In order to achieve full vehicle deceleration,
foot pressure must be increased after the
brake pedal has begun vibrating.
Examples of PSM control operations
– If the “front wheels of the vehicle drift” on
a bend, the engine power is reduced and the
rear wheel on the inside of the bend is braked
if necessary.
– If the rear of the vehicle swings out on a bend, the front wheel on the outside of the bend is
braked.