2009 PORSCHE PANAMERA cooling

72
Air Conditioning
Switching on AC mode
If you wish to cool th
e passenger compartment
to a temperature lower than the outside
temperature, AC mode must be activated.
f Press button .
The indicator light on the button lights up.
The air-conditioning compressor is
switched on.
or
Press button .
Switching off AC mode
AC mode can be switched off manually to save
fuel, for example.
f Press button .
The indicator light on the button goes out.
The air-conditioning compressor is
switched off.
The cooling function is deactivated.
AC MAX modeIn AC MAX mode, the inte rior of the passenger
compartment is cooled at maximum power.
The interior temperature is not adjusted
automatically.
Switching AC MAX mode on
f Press button .
The indicator light on the button lights up. Switching AC MAX mode off.
f
Press button .
The indicator light on the button goes out.
or
Press button .
Increased cooling output in AC MAX mode on
4-zone air-conditioning system
On the automatic 4-zone air-conditioning system,
AC MAX mode provides a dditional cooling output
for the front air-conditioned areas.
The air-conditioned areas in the rear are
deactivated automatically to achieve this increase
in cooling output.
OFF appears in the displays on the operating unit
for the rear air-conditioned areas.

Air Conditioning
75
Setting automatic air-recirculation modeIn automatic air-recirculation mode, the fresh air
supply is adjusted depending on the air quality.
Automatic air-recirculation mode can be switched
on and off on the multi-function display.
At outside temperatures below approx. 50 °F
(10 °C), air-recirculation mode is deactivated
automatically to prevent the windows from
misting.
For information on adjusting automatic air-
recirculation mode on the multi-function display:
fPlease see the chapter “SETTING AIR
CONDITIONING” on page 146.
Note
The recommended operating mode is automatic
air-recirculation mode (default setting).
Information on the air-conditioning
compressorThe air-conditioning compressor:
– Can switch off briefly to ensure sufficient engine cooling if the engine is operating under
extreme load.
– Automatically switches off at temperatures below 38 °F (3 °C) and cannot be switched on,
even manually.
– Operates most effectively with the windows closed.
If the vehicle has been in the sun for a long
time, it is a good idea to ventilate the interior
briefly with the windows open.
– Depending on the outside temperature and humidity, condensation can drip from the
evaporator and form a pool under the vehicle.
This is normal and not a sign of leaks.
Information on automatic load switch-offIf the charging condition of the battery is critical,
the following air-conditioning or heating functions
are restricted initially and then switched off.
– Heated seats
– Heated rear window/External mirror heating
–Fresh-air blower
– Air-conditioning compressor

76
Air Conditioning
Front control panel
(2-zone and 4-zone air conditioning systems)Automatically Controlled
Air ConditioningDepending on various factors (e.g. sunlight, air
quality, ambient temperature, misted windows),
the air-conditioning system adjusts the preset
interior temperature, air distribution and air
quantity fully automatically.
Automatic mode is deactivated as soon as the
settings are adjusted manually. In this case,
automatic climate control still regulates the
air-conditioning functions that have not been
modified manually. Please read the information on:
–
REST mode , see page 71.
– AC mode , see page 71.
– AC MAX mode, see page 72.
– MONO mode , see page 74.
– Defrosting the windshield , see page 73.
– Air-recirculation mode , see page 74.
– Air-conditioning compressor , see page 75.
Front control panel, left air-conditioned area
A- Air-conditioning display, left side
1 - AUTO mode, left side (automatic mode)/
REST mode (using engine residual heat)
2 - Temperature, left side
3 - Air quantity, left side
4 - Air to windshield, left side
5 - Air to center and side vents, left side
6 - Air to footwell, left side
Front control panel, right air-conditioned area
B - Air-conditioning display, right side
7 - AUTO mode, right side (automatic mode)/
REAR mode (adjusting rear air-conditioned
areas using the front control panel)
(4-zone air conditioning)
8 - Temperature, right side
9 - Air quantity, right side
10 - Air to windshield, right side
11 - Air to central and side vents, right side
12 - Air to footwell, right side
Front control panel, general functions
C - AC mode (air-conditioning compressor on/off)
D - AC MAX mode (maximum cooling output)
E - Air-recirculation mode
F - MONO mode (adopt driver’s air-conditioning
settings for all air-conditioned areas)
G - Defrosting the windshield
H - Heated rear window/door mirror heating

78
Air Conditioning
Temperature and air quantity, front control panelSetting temperatureFor personal comfort, the interior temperature
can be adjusted individually between 60 °F (16 °C)
and 87 °F (29.5 °C).
Recommendation: 72 °F (22 °C)
The selected temperature is shown on the display
above the button .
Increasing temperature
f Press button for the relevant air-
conditioned area upwards.
The preset temperature value is shown on
the air-conditioning display.
Temperature and air quantity on the rear control panel
(4-zone air-conditioning)Reducing temperature
fPress button for the relevant
air-conditioned area downwards.
The preset temperature value is shown
on the air-conditioning display.
If LO or HI appears on the display, the system is
operating at maximum coo ling or heating power.
Automatic mode is switched off. Note on operation
If one air-conditioned area is set to LO
or HI,
the other air-conditioned areas are also set
to LO or HI.
Pressing the button selects the preset
temperature.
Note
The air-conditioning system always cools and
heats the passenger compartment to the preset
temperature at maximum cooling or heating
temperature.
Setting the temperature temporarily to a lower or
higher value does not cool or heat the passenger
compartment to the desired temperature more
quickly.

110
Instrument Panel and Multi-Function Display
A – TachometerThe start of the red zone on the tachometer or
rev-counter scale is a visual warning of the
maximum permissible engine speed.
If the red zone is reached during acceleration, fuel
feed is interrupted in order to protect the engine.B – SpeedometerThe analogue display B is located on the left next
to the tachometer in the instrument panel.C – Multi-Function DisplayFor information on the multi-function display:
f Please see the chapter “OPERATING THE
MULTI-FUNCTION DISPLAY IN THE
INSTRUMENT PANEL” on page 115.
D – Engine Oil Temperature GaugeA warning message will appear on the multi-
function display in the instrument panel if the
engine oil temperature is too high.
f Reduce engine speed and engine load
immediately if the red zone is reached.
For information on warning messages on the
multi-function display:
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.E – Coolant Temperature GaugeIf the cooling system is in any way faulty, consult
a qualified specialist workshop. We recommend
that you have an authorized Porsche dealer to do
this work, as they have the trained workshop
personnel and the necessa ry parts and tools for
this type of work.
Pointer in the lower area – engine cold
f Avoid high engine speeds and heavy
engine loading.
Pointer in the middle – normal operating
temperature
Pointer may move up to the red area when engine
is heavily loaded and outside temperature is high.
Coolant temperature warningThe temperature gauge warning light will
illuminate if the coolant temperature is too high.
The warning message “Engine temperature too
high” will also appear on the multi-function display
in the instrument panel.
f Switch off engine and allow to cool.
f Check radiators and air guides in front end of
vehicle for obstructions.
f Check the coolant level.
Top up with coolant if necessary.
f Have the fault corrected.
f Please see the chapte r “CHECKING COOLANT
LEVEL AND ADDING COOLANT” on page 257.
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.
Note on operation
To prevent excessive temperatures, the cooling
air ducts must not be obstructed by covering
them (e.g. with film, “stone guards”, etc.).

114
Instrument Panel and Multi-Function Display
Warning!
Risk of accidents and ri sk of engine damage.
A broken drive belt means there is no power
assistance to the steering (more effort is
required to steer) and engine cooling fails.
f Do not continue driving.
f Have the fault corrected.
f Please contact a qualif ied 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.
Danger of steering assistance failing during
a long journey in water if the drive belt slips.
f If steering assistance fails, more effort will be required to steer.
Check Engine
(Emission Control)The emission control system detects malfunctions
that could cause increased pollutant emissions or
consequential damage etc. well in advance.
Faults are indicated by the warning light on the
instrument panel which then either lights up
continuously or flashes.
The faults are recorded in the control unit’s
fault memory.
The warning light on the instrument panel lights up
when the ignition is switched on as a lamp check
and goes out approx. 1 second after the engine
starts.
The warning light on the instrument panel flashes
to indicate operating states (e.g. engine misfiring)
which may cause damage to certain parts of the
emission control system.
f In this case, immediately reduce the engine
load by easing off the accelerator pedal.
In order to avoid consequential damage to the
engine or the exhaust-gas cleaning system
(e.g. catalytic converter):
f 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.
Caution!
Risk of damage. If the warning light on the
instrument panel continues flashing even
when you have eased off the accelerator
pedal, the emission control system may
overheat.
f Stop as soon as possible in a safe place.
Make sure that combustible materials, such as
dry grass or leaves, cannot come into contact
with the hot exhaust system.
f Switch off the engine.
fHave the fault corrected.Acoustic SignalsA speaker in the instrument panel generates
acoustic signals.
If the speaker is faulty, a warning will appear and
the speaker will no longer make an acoustic signal
(i. e. sound).
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152.
Warning light

Storage, Luggage Compartment and Roof Transport System
219
Opening
fPull the latch handle and open the lid.
Closing
f Always lock the latch handle with the
emergency key to secure the contents from
unauthorized access.
Cooled glove box
The glove box can be cooled if necessary.
Cooled air is directed into the glove box via
a separate air vent.
For information on cooling the glove box:
fPlease see the chapter “COOLED GLOVE BOX”
on page 83.
Storage tray in the armrest between the
front seatsOpening
f Press the button ( arrow) on the passenger’s
side of the armrest.
The lid pops up automatically.

258
Maintenance and Car Care
1. If the engine is hot, cover the reservoir cap
with a cloth.
Open cap carefully and allow any overpressure
to escape.
Then unscrew cap completely.
2. Read off the engine coolant level. Top up with coolant if necessary.
Only add a mixture of antifreeze and water
in equal parts.
Antifreeze in coolant:
50 % provides antifreeze protection
down to –31 °F (–35 °C).
Do not top up over the plus marking.
3. Screw the cap on the reservoir closed until it locks securely.
4. Have the cooling system checked. Please contact a qualif ied 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. Maintenance notes
If pure water is added in an emergency, the mixing
ratio will have to be corrected.
A significant loss of coolan
t indicates a leak in the
cooling system.
f The cause must be eliminated without delay.
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.
Radiator fansThe radiators and radiator fans are in the front
of the vehicle.
Warning!
Risk of injury.
The fans can start running when a certain
temperature is reached, even with the
engine switched off.
f Exercise extreme care when working close to
the radiator fans and make sure the engine is switched off.
Brake FluidRegular checking of the brake fluid is part of
servicing.
The fluid level should always be between the
MIN and MAX markings.
A slight decrease in the fluid level due to wear
and automatic readjustment of the disc brakes
is normal.
However, if the fluid level falls significantly or
goes below the MIN marking, the brake system
may have developed a leak.
fHave the brake system checked immediately.
Please contact a qualified specialist workshop.
We recommend that you have an authorized