2006 PORSCHE CAYENNE S Ventilation

158
Controls, Safety, Instruments
A-“
–” button
B-TIMER button
C-ON/OFF button
D-“+” button
Parking HeaterThe parking heater features two functions: parking
heating and parking ventilation.
The parking heater is ready for use regardless of
the ignition key position.
The parking heater is also used as an auxiliary
heater. Operation of the parking heater is clearly
audible when outside temperatures are low, even
if the parking heater has been manually switched
off.
Danger!
Risk of poisoning due to carbon monoxide
(CO). The parking heater consumes fuel and
emits exhaust fumes. Exposure to such
fumes can cause unconsciousness, serious
personal injury or death.
fSwitch off the parking heater before refuelling.
fDo not operate the parking heater in enclosed spaces (e.g. a garage).
The parking heater is operated using the following
buttons on the front air-conditioning control panel:
Switch parking heater on and off
Activate program
Start programming
Call memories
Set ON times
Activate heating function
Set ON times
Activate ventilating function

160
Controls, Safety, Instruments
E- Parking ventilation symbol
F-Memory symbol
G-ON time symbol
H- Parking heating symbol
I-ON timeProgramming the parking heaterThe parking heater has three independent memo-
ries for programming the ON times. The ON time,
together with the associated parking heating or
parking ventilation function, can be programed in
each memory.Complete programming of the parking heater
requires definition of the
–Function and
–ON time.
Programming function
1. Switch ignition off.
2. Press TIMER button on the front
air-conditioning control panel.
The symbols for the parking heating H or
parking ventilation E function flash on the
display.
3. Select function.
Press “+” button for parking heating
or “–” button for parking ventilation.
If no other entry is made within 10 seconds, the
display returns to its initial status.
However, the selected function is retained and is
activated when the parking heater is next turned
on.
fPlease observe the chapter “SWITCHING PAR-
KING HEATER ON AND OFF” on Page 159.

Controls, Safety, Instruments
161
Programming ON times
1. Switch ignition off.
2. Press TIMER button.
3. Select function (parking heating or parking
ventilation).
4. Select the memory using TIMER button B.
The desired memory can be selected by
pressing button B several times.
5. Set ON time using the “+” and “–” buttons A
und D.
Pressing the buttons adjusts the time on a
minute-by-minute basis. If the button is kept
depressed, the time is adjusted faster.
ON times are only valid for 24 hours.
6. Press ON/OFF button C.
Displays F and G flash for approx. 10 seconds.
The button C can be pressed again to switch
off the displays before this time has elapsed.
ON time I, clock symbol F and memory G are
displayed for 2 minutes after ON/OFF button C
has been pressed.
The display then goes out.
The parking heater has now been programed
and the selected memory is active (symbol G
is lit).
Note on operation
Only one memory can be active at any one time.Activating the memory
The parking heater runs for 30 minutes. It then
switches itself off automatically.
The program must be reactivated for every subse-
quent run.
To do this:
1. Switch ignition off.
2. Press TIMER button B.
3. Select function (parking heating or parking
ventilation).
4. Select the memory using TIMER button B. The
ON time that was last saved is displayed.
5. Press ON/OFF button C.
The program is reactivated.
Displays F and G flash for approx. 10 seconds.
The ON/OFF button can be pressed again to
switch off the displays before this time has
elapsed.
After the ON/OFF button has been pressed,
the ON time I, clock symbol F and memory G
are displayed for 2 minutes.
The display then goes out.
The parking heater has now been programed
and the selected memory is active (symbol G
is lit).
Note on operation
Only one memory can be active at any one time.Example:
The parking heater is to activate the parking
heating function at 9:48 a.m.
To do this:
1. Switch ignition off.
2. Press TIMER button B on the front air-condi-
tioning control panel.
The symbols for the parking heating or parking
ventilation function flash on the display.
3. Press “+” button D.
This selects the parking heating function.
4. Select the memory using TIMER button B
.
5. Set ON time to 9:48 a.m. using the “+” and
“–” buttons (A and D).
6. Press ON/OFF button C.
The parking heater has now been programed
and the selected memory is active.
Note on operation
If the parking heater is switched on manually prior
to program start of an active memory, this will
delete the programming.
The memory must be reactivated if it is needed.
If the memory is not reactivated, the parking
heater will not switch on.

Maintenance, Car Care
283
How Emission Control WorksWhen an automobile engine is running, it uses en-
ergy generated through the combustion of a mix-
ture of air and fuel. Depending on whether a car is
driven fast or slowly or whether the engine is cold
or hot, some of the fuel (hydrocarbons) may not
be burned completely, but may be discharged into
the engine crankcase or exhaust system. Additon-
al hydrocarbons may enter the atmosphere
through evaporation of fuel from the fuel tank.
These hydrocarbons (HC), when released into the
air, contribute to undesirable pollution.
In addition, carbon monoxide (CO) and oxides of
nitrogen (NOx) contribute to engine emissions.
They, too, are formed during the combustion proc-
ess and discharged into the exhaust system.
To reduce these pollutants, your Porsche is
equipped with a precisely calibrated fuel injection
system to assure a finely balanced air/fuel mixture
under all operating conditions.
Oxygen sensorThe oxygen sensor, installed in the exhaust pipe
continuously senses the oxygen content of the ex-
haust and signals the information to an electronic
control unit. The control unit corrects the air/fuel
ratio, so the engine always receives an accurately
metered air/fuel mixture.Crankcase ventilationThrough crankcase ventilation, undesirable emis-
sions from the engine crankcase are not permit-
ted to reach the outside atmosphere. These emis-
sions are recirculated from the crankcase to the
air intake system. From here the emissions mix
with the intake air and are later burned in the en-
gine.Catalytic convertersThe catalytic converters are efficient “clean-up“
devices built into the exhaust system of the vehi-
cle. The catalytic converters burn the undesirable
pollutants in the exhaust gas before it is released
into the atmosphere.
The exclusive use of unleaded fuel is critical-
ly important for the life of the catalytic con-
verters. Therefore, only unleaded fuel must
be used.The catalytic converters will be damaged by:
– push or tow starting the vehicle
– misfiring of the engine
– turning off the ignition while the vehicle is mov-
ing or
– driving until the fuel tank is completely empty
– by other unusual operating conditions.
fDo not continue to operate your vehicle under
these conditions, since raw fuel might reach
the catalytic converters. This could result in
overheating of the converters. Federal law pro-
hibits use of leaded fuel in this car.

Practical Tips, Minor Repairs
339
45
Electrical seat adjustment, left; seat heating, rear
30
46
47
Transfer box
10
48
49
Servotronic, disengageable anti-roll bars
5
50 Heating pipe ventilation10
51
Diagnosis, parking brake switch, Air conditioning
5
52 Rear wiper30
53
Vehicle electrical system control unit, central locking system, power windows, mirrors, light switch, steering column
5
54 Headlight beam adjustment10
5556 Fan, front air-conditioning system4057
Fan, rear air-conditioning system
40
RES 1 Spare fuse 1
RES 2
Spare fuse 2
No. Designation Rating in A

346
Practical Tips, Minor Repairs
Replacing the batteryThe service life of the battery is subject to normal
wear; it depends greatly on care, climatic condi-
tions, and driving conditions (distances, loads).
fOnly use an original Porsche battery, with the
correct part number, as a replacement. Only
this battery meets the specific requirements of
the vehicle.
fPlease observe the disposal instructions for
batteries.
Battery chargingAutomotive batteries loose their efficiency when
not in use. The charge available in your battery can
be measured with a battery hydrometer. We rec-
ommend that the battery voltage be tested by
your Porsche dealer who has the appropriate
equipment.
If the car is not driven for prolonged periods, the
battery must be charged at least every 6 weeks.
A discharged battery allows rapid formation of sul-
fates, leading to premature deterioration of the
plates.
Danger!
Hydrogen gas generated by the battery
could cause an explosion, resulting in severe
personal injuries.
fCharge battery in a well ventilated area.
fNever charge a frozen battery. It may explode
because of gas trapped in the ice. Allow a fro-
zen battery to thaw out first.
fIf you get electrolyte, which is an acid, in your
eyes or on your skin, immediately rinse with
cold water for several minutes and call a doc-tor.
Note
Your authorized Porsche dealer will be pleased to
advise you about a suitable charger.Slow battery charging
1. Pay attention to all warnings and follow instruc-
tions that come with your battery charger.
2. When charging, ensure adequate ventilation.
3. Remove battery.
Please observe the chapter “REMOVING AND
INSTALLING BATTERY” on Page 347.
4. All vent caps should be open.The fluid level
should meet the indicator mark in each cell.
5. Ensure that charger is switched off – danger of
short circuit!
6. Connect charger cables.Charger cables must
be connected POSITIVE (+) to POSITIVE (+)
and NEGATIVE (–) to NEGATIVE (–).
7. Switch on charger. Normally, a battery should
be charged at no more than 10 percent of its
rated capacity. Rated capacity of the battery in
your vehicle is listed on the battery housing.
8. After charging, turn off charger and disconnect
charger cables.
9. Tighten the vent caps and reinstall battery.
Please observe the chapter “REMOVING AND
INSTALLING BATTERY” on Page 347.

348
Practical Tips, Minor Repairs 4. Fold sections of floor carpet forward.
Unscrew both screws B of the seat mounting.5. Tilt the seat all the way back.
With the seat tilted back, use the fore-and-aft
adjustment to move the seat forward again.6. Open the 4 clamps C of the battery-box lid with
a screwdriver.
7. Remove the battery-box cover with ventilation
duct.
Danger!
Danger of explosion and injury and risk of
short circuit and damage to the alternator
and electronic control units.
fDisconnect the negative cable first, and then the positive cable.
8. Disconnect the negative cable.
9. Disconnect the positive cable.

350
Practical Tips, Minor Repairs fAlways tighten all screws to the
prescribed torque.
3. Fasten the battery fastening plate with screw
E. Tightening torque 15 ftlb. (20 Nm).
4. Fasten the bracket with screw F. Tightening
torque 6.5 ftlb. (9 Nm).
5.Important: Do not forget to connect vent
hose D to the battery.
Make sure that both ends of the vent hose are
properly connected.
Danger!
Danger of explosion and injury and risk of
short circuit and damage to the alternator
and electronic control units.
fConnect the positive cable first, and then the negative cable.
6. Connect the positive cable.
7. Connect the negative cable.
8. Put on the battery-box cover carefully.
Ensure that the ventilation duct is properly in-
serted.
9. Engage the 4 clamps C on the battery-box lid
and close them with a screwdriver.10.With the seat tilted back, use the fore-and-aft
adjustment to move the seat back.
Tilt the seat forward.
11.Clean threaded holes on the seat mounting.
12.Use only new bolts B (the bolts are micro-en-
capsulated).
Insert bolts B and screw them in a few turns by
hand.
Tighten bolts.
Tightening torque 37 ftlb. (50 Nm).
13.Clip in front seat trim.
14.Move seat to normal position.