door PORSCHE CAYMAN 2009 1.G Service Manual

112
Automatic air conditioning system, Heated rear window/Door mirror heating
Information on air-conditioning
compressor– May switch off briefly to ensure sufficient engine cooling if the engine is operating under
extreme load.
– The air-conditioning compressor switches off automatically at temperatures below approx.
37 °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 hu- midity, condensation can drip from the evapo-
rator and form a pool under the car.
This is normal and not a sign of leakage.
– If uncooled air flows out when the lowest temperature has been set, switch off the air
conditioning compressor and have the fault
remedied.
Please contact your auth orized Porsche dealer
for further information.

Automatic air conditioning system, Heated rear window/Door mirror heating
113
Automatic Air Conditioning SystemThe automatic air-conditioning system controls
the preselected interior temperature completely
automatically.
If necessary, the automatic system can be
manually adjusted.
Automatic modef Press AUTO button G.
AUTO will appear on the display panel.
Air quantity and distribution are automatically
controlled and variations are compensated.
All automatic setting functions can be individually
changed.
This setting is retained until the appropriate
function button is pressed again or the AUTO
button is pressed.
A - Defrosting the windshield
B -Heated rear window
C -Temperature sensor
D - AC OFF button (air-conditi oning compressor off/on)
E - Recirculating-air button
F -Temperature button
G - AUTO button (automatic mode)
H - Air distribution to footwell
I - Air distribution to central and side vents
J - Air distribution to windshield
K -Blower speed button

114
Automatic air conditioning system, Heated rear window/Door mirror heating
Setting temperaturefPress button F upwards or downwards
respectively.
To suit personal comfort, the interior temperature
can be adjusted between 61 °F and 85 °F/16 °C
and 29.5 °C.
Recommendation: 72 °F/22 °C.
If “LO” or “HI” appears on the display, the system
is operating at maximum cooling or heating pow-
er.
Automatic control is no longer active.
Note
If the preselected temperature is changed, the
blower speed can increase automatically in auto-
matic mode.
The desired temperature is reached more quickly
this way.
Sensors
To avoid affecting the performance of the air-con-
ditioning system:
f Do not cover the sun sensor on the instrument
panel or the temperature sensor C. f
Press button A (switch on or off).
The windshield is defogged or defrosted as
quickly as possible.
Air flows to the windshield only.
The light-emitting diode in the button lights up.
AC OFF – switching compressor for air-
conditioning system on and offThe air-conditioning compressor switches off
automatically at temperatures below approx.
37 °F/3 °C and cannot be switched on, even
manually.
Whenever outside temperatures exceed approx.
37 °F/3 °C, the air-conditioning compressor is
always switched on in automatic mode.
The compressor can be switched off to save fuel,
but control comfort is then limited:
f Press AC OFF button D.
The compressor is switched off.
The light-emitting diode in the button lights up.
f If the interior temperature is too high, switch
compressor back on or press AUTO button.
To dry incoming air in damp weather, do not
switch off the air-conditioning compressor.
This prevents fogging of windows. f
Press button K upwards or downwards respec-
tively.
The preset blower speed is increased or
decreased.
The speed stages are indicated by a bar display.
If the button is pressed downwards at the lowest
blower stage, the blower and automatic control
are switched off. “OFF” will appear on the display
field.
Pressing the button upwards or pressing the
AUTO button switches the blower and automatic
control back on again.
Warning!
Risk of accident due to impaired vision,
resulting in serious personal injury or death.
In recirculating-air setting, the windows may
fog up.
f Only select recirculatin g-air setting for short
periods.
f If the windows fog up, switch recirculating-air
setting off immediately by pressing the
circulating-air button again and select the “Defrost windshield” function.
Defrosting the windshield
Adjusting blower speed
Recirculating-air setting

Automatic air conditioning system, Heated rear window/Door mirror heating
115
Switching recirculating-air setting on or off
fPress button E.
The outside-air supply is interrupted and only
the inside air is circulated.
The light-emitting diode in the button lights up.
Over approx. 37 °F/3 °C
If the air-conditioning compressor was off, it
switches on automatically. The duration of recircu-
lating-air setting is not limited.
Below approx. 37 °F/3 °C
The air-conditioning compressor is switched off.
Recirculating-air setting is automatically ended
after approx. 3 minutes.Air distributionThe individual air distributions can be combined as
desired.
Recommended setting in Summer:
Air distribution to central and side vents.
Recommended setting in Winter:
Air distribution to footwell and windshield. f
Press button H.
The air flows to the footwell.
The selection appears on the display panel.
f Press button I.
The air flows from the central and side vents.
Vents must be open.
The selection appears on the display panel.
f Press button J.
The air flows to the windshield.
The selection appears on the display panel.
Note on operation
f On vehicles with the Sport Chrono Package
Plus, individual air conditioning settings can be
stored on your vehicle key.
Please observe the chapter “Individual
Memory” in the separate PCM operating
instructions.
General instructions for air-conditioning
compressor– Can switch off briefly if engine is under an ex-
treme load to ensure sufficient engine cooling.
– Switches off automatically at temperatures be- low approx. 37 °F/3 °C and cannot be
switched on, even manually.
– Operates most effectively with windows closed.
If the car has been in th e 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 hu- midity, condensation can drip from the evapo-
rator and form a pool under the vehicle.
This is normal and not a sign of leakage.
– If uncooled air flows out when the lowest temperature has been set, switch off the air-
conditioning compressor and have the fault
repaired at an authorized Porsche dealer.
Air distribution to footwell
Air distribution to central and side
vents
Air distribution to windshield

116
Automatic air conditioning system, Heated rear window/Door mirror heating
A- Continuous opening and closing
B - Setting vent direction Central and Side Vents f Rotate knurled wheel upward.
f Rotate knurled wheel downward.
Changing air flow direction fMove the vanes to make the air flow in the
desired direction.
Outside air or conditioned air can be delivered
from all vents, depending on the air-distribution
setting on the operating panel.
Opening vents
Closing vents
Fresh-air Intake To ensure proper air intake:
f Keep the fresh-air inle t between the luggage
compartment lid and the windshield free from
snow, ice and leaves.

Automatic air conditioning system, Heated rear window/Door mirror heating
117
The heated rear window/door mirror heating is
ready for operation when the ignition is on.
Switching onfPress button.
The light-emitting diode in the button lights up.
After approx. 15 minutes, the heating switches off
automatically.
The heater can be switched back on by pressing
the button again.Switching offf Press button.
The light-emitting diode in the button goes out.
Heated Rear Window/Door
Mirror Heating

118
Automatic air conditioning system, Heated rear window/Door mirror heating

152
Instruments, On-Board Computer, Warnings
Tire pressure function of the on-board
computer
The tire pressure function of the on-board
computer
displays the tire pressures (actual
pressure) dependent on temperature in the four
wheels.
You can watch the tire pressure rise as the
temperature increases while driving.
This display is only for information.
f Under no circumstances should the tire
pressures be changed based on this display.
Warning!
This display is for informational purposes
only. Under no circumsta nces should the tire
pressures be changed based on this display.
Changing the tire pressure to incorrect
pressures could adversely affect the perfor-
mance, driving character istics, and safety of
your vehicle.
f Maintain tire pressures according to the units
indicated on the tire pressure plate, located on the drivers side door of the vehicle.
Displaying the tire pressure function of the
on-board computer
f Push operating lever up or down until the tire
pressure function of the on-board computer
appears.
(The selection field must be switched off.)Pressure info in tire pressure menu
In accordance with physical principles, the air
pressure changes as the temperature changes.
The tire pressure increases or decreases by
around 1.5 psi (0.1 bar) for every 18 °F (10 °C)
change in temperature.
The Tire Pressure Monitoring takes this relation-
ship between tire pressure and temperature into
account.
f
Please see the chapter “PRESSURE INCREASE
AS THE RESULT OF TEMPERATURE
INCREASE” on Page 160.
You can read the tire pressures to be
corrected in this display.

160
Instruments, On-Board Computer, Warnings
Pressure increase as the result of
temperature increaseIn accordance with physical principles, the air
pressure changes as the temperature changes.
The tire pressure increases or decreases by
around 1.5 psi (0.1 bar) for every 18 °F (10 °C)
change in temperature.
The Tire Pressure Monitoring takes this relation-
ship between tire pressure and temperature into
account.
Tire pressure specificationsInformation on tire pressure for public roads can
be found in this Owner's Manual in the Technical
Data chapter or on the tire-pressure plate in the
left door aperture.
These values apply to cold tires at 68 °F (20 °C)
ambient temperature.

Maintenance, Car Care
195
Fuel
Warning!
Fuel is highly flammable and harmful to
health.
f Fire, open flame and smoking are prohibited
when handling fuel.
f Avoid contact with skin or clothing.
f Do not inhale fuel vapors.
To prevent damage to the emission control
system and engine:
f Never drive the tank completely out of fuel.
f Avoid high cornering speeds after the warning lights have come on.
f Please see the chapter “FUEL ECONOMY” on
Page 194.
Please see the chapter “EMISSION CONTROL
SYSTEM” on Page 198.
Please see the chapter “LEVEL GAGE” on
Page 130.
Check engine warning light
If the warning lights in the instrument panel and on-
board computer come on and remain on while
driving, it suggests:
– a potential engine control problem and the need for system service or
– an improperly fastened tank cap or – refueling with engine running.
Opening the filler flapThe filler opening is under th
e filler flap in the front
right fender.
f With the vehicle unlocked, press on the front
part of the filler flap ( arrow) to open the flap.
The filler flap is centrally locked along with the oth-
er locks. If there is a defect in
the automatic unlocking
system:
f Open the passenger door.
f Pull the ring in the right-hand door aperture
(arrow ).