tire pressure PORSCHE BOXSTER 2009 2.G Owners Manual

Table of Contents
7
Trip Odometer ........................................... 121
Speedometer ................ ............................ 122
Changing over between Miles / Kilometers .. 122
Tachometer ............... ................................ 123
Turn Signal Indicator Light .......................... 123
High Beam Indicator Li ght ........................... 123
Gear Shift Indicator
(in vehicles with manual transmission) .......... 123
Cooling System ......... ................................ 124
Porsche Doppelkupplung (PDK) ................... 125
Fuel .......................... ................................ 126
Clock ............................ ............................ 127
Outside Temperature ................................. 127
Check Engine (Emission Control) ................. 129
On-Board Computer (B C) ............................ 130
Warnings on the instrument panel and the on-
board computer ............. ............................ 162Shifting Gears.................................. 171Manual Transmission, Cl utch ....................... 172
Drive-Off Assistant ..... ................................ 173
Porsche Doppelkupplung (PDK) ................... 174Mobile Roofs ................................... 181Convertible Top ......... ................................ 182
Windstop ................... ................................ 189
Hardtop ........................ ............................ 190Maintenance, Car Care .................... 195Exercise Extreme Caution when Working
on your Vehicle .......................................... 196
Coolant Level ............ ................................ 197
Engine Oil ................. ................................ 199 Engine Oil Level ..
......................................199
Engine Oil Recommendat ion ........................200
Brake Fluid Level ...... ..................................202
Fuel Economy .......... ..................................204
Operating your Porsche in other Countries ...204
Fuel Recommendation s ..............................206
Portable Fuel Containers ............................207
Fuel Evaporation Control ............................207
Emission Control Syst em ............................208
How Emission Control Works ......................209
Washer Fluid ............ ..................................210
Power Steering ........ ..................................211
Air Filter .................. ..................................211
Combination Filter .... ..................................211
Fluids/Oils for Manual Transmission
and Porsche Doppelkuppl ung (PDK) .............211
Wiper Blades .......... ..................................212
Car Care Instructions ................................213
Practical Tips, Emergency Service .... 221Exercise Extreme Caution when Working
on your Vehicle ............................ .............222
Tires/Wheels ............... ............................. 223
Loading Information ...................... .............234
Wheel Bolts ................................. .............236
Changing a wheel .......................... .............237
Flat Tire........................ ............................. 239
Lifting the Vehicle with a Lifting Platform
or Garage Lift ...... ......................................242
Spacers ...................... ..............................243
Electrical System ......................................245
Battery ................... ..................................249
Replacing the remote-control battery ..........254
Emergency Starting with Jumper Cables ......255 Bulb chart ..............
................................... 257
Lights, Replacing Bulb s ............................. 257
Headlights ............. ................................... 258
Number Plate Light . ................................... 266
Changing Light-Emitting Diodes and Long-Life
Bulbs ......................... .............................. 266
Adjusting Headlights .................................. 267
Towing ....................... .............................. 269
Vehicle Identification,
Technical Data ......... ....................... 273Vehicle Identification .................................. 274
Technical Data ....... ................................... 276
Tire Pressure for Cold Tires ....................... 277
Tires, Rims, Tracks .................................. 278
Driving Performance* ................. .............. 280
Capacities ............. ................................... 281
Weights ..................... .............................. 282
Dimensions ........... ................................... 282
Diagrams ................... .............................. 283

Operation, Safety
59
ABS Brake System
(Antilock Brake System)The ABS system represents a major contribution
to the enhancement of active safety in your vehi-
cle. This system prevents the wheels from locking
in a panic stop on almost all road surfaces.
With the ABS system in your vehicle, the
following areas are enhanced:
Steering, vehicle remains steerable under all
braking forces when ABS is engaged.
Good directional control , no swerving caused
by locking of wheels under braking conditions.
Shorter stopping distance , stopping distances
are usually reduced because controlled braking is
maximized.
Prevention of wheel lock up , no brake- induced
sliding and thus no localized tire wear from emer-
gency braking.
The crucial advantage of the ABS system over a
conventional brake system is in the area of main-
taining directional control and maneuverability of
the car in emergency situations.
Warning!
The increased control that is provided should
not induce you to take greater risks with your
safety. The limits dictated by the laws of
physics cannot be overcome, even with ABS.
The risk of accidents due to inappropriate
speed cannot be reduced, even by the ABS.
The driver bears the responsibility for all
driving maneuvers.
f Adapt your driving style to the prevailing road
and weather conditions.
f Obey all traffic laws.
Other vehicles not equipped with the ABS
system may not be able to maintain control,
especially on wet or poor road surfaces and
thus may be more likely to impact you from
behind.
f To minimize that risk, use your ABS system to
increase your ability to maneuver to avoid dan-
gerous situations and not merely to try to stop in the shortest distance possible.
Operation of the ABS systemA wheel speed sensor is mounted to each of the
four wheels. If wheel lock -up of either of the front
wheels or the rear wheels is sensed during brak-
ing, the brake pressure is adjusted automatically
until the wheel no longer slips.
If braking forces approach the wheel lock-up point
for all wheels (panic brak ing) the ABS system will
intervene to provide a rapid rythmic braking. The
proper operation of ABS is perceived by the driver
as a pulsating brake pedal in conjunction with au-
dible noise and perhaps some vibration.
f If you experience these sensations while driv-
ing or a road surface with questionable trac-
tion, reduce vehicle speed appropriate for the
prevailing road conditions.
f If full braking should be necessary, press the
brake pedal all the wa y down throughout the
entire braking procedure, regardless of the pul-
sating pedal. Do not ease up on pressure ap-
plied to the pedal.
The functional readiness of all the main electrical
components of the ABS is checked by an
electronic monitoring system both before and
while you drive.

116
Instruments, On-Board Computer, Warnings
Instrument Panel USA Models Also refer to the corresponding chapters in
the Owner’s Manual.1. Speedometer with analogue display
2. Automatic speed control indicator light
3. Tire pressure warning light
4. Turn signal indicator light, left/right
5. Tachometer
6. High beam indicator light
7. ABS warning light
8. Cooling system Temperature gage, warning light
9. Fuel Level gage, warning light
10.Adjustment button for instrument illumination and trip counter
11.Odometer and daily trip mileage display
12.Light sensor for instrument illumination
13.Airbag warning light 14.Check Engine warning light
(Emission control warning light)
15.Central warning light
16.On-board computer display
17.Porsche Stability Management PSM Multifunctional light
18.Brake warning light
19.Safety belt warning light
20.Gear display
21.PDK transmission, selector lever position
22.Clock and outside temperature display
23.Adjustment button for clock When the ignition is switched on, the warning
lights light up for a lamp check.
Note
Warnings that have been given are stored in the
appropriate control unit me
mory and can be read
out at an authorized Porsche dealer.
This information can help to warn you about situa-
tions which may be hazardous to you or your car.

118
Instruments, On-Board Computer, Warnings
Instrument Panel Canada Models Also refer to the corresponding chapters in
the Owner’s Manual.1. Speedometer with analogue display
2. Automatic speed control indicator light
3. Tire pressure warning light
4. Turn signal indicator light, left/right
5. Tachometer
6. High beam indicator light
7. ABS warning light
8. Cooling system Temperature gage, warning light
9. Fuel Level gage, warning light
10.Adjustment button for instrument illumination and trip counter
11.Odometer and daily trip mileage display
12.Light sensor for instrument illumination
13.Airbag warning light 14.Check Engine warning light
(Emission control warning light)
15.Central warning light
16.On-board computer display
17.Porsche Stability Management PSM Multifunctional light
18.Brake warning light
19.Safety belt warning light
20.Gear display
21.PDK transmission, selector lever position
22.Clock and outside temperature display
23.Adjustment button for clock When the ignition is switched on, the warning
lights light up for a lamp check.
Note
Warnings that have been given are stored in the
appropriate control unit me
mory and can be read
out at an authorized Porsche dealer.
This information can help to warn you about situa-
tions which may be hazardous to you or your car.

Instruments, On-Board Computer, Warnings
131
A- Digital speedometer
B -Central display
C - Bottom displayFunctions and display possibilitiesNote
The available items and displays in the on-board
computer depend on the equipment of your vehi-
cle. For this reason it is possible that some of the
items and displays shown here are not available in
your on-board computer. Basic setting
– Central display: .... Radio station
The central line
B of the on-board computer can
be selected in the SET menu.
Calling on-board computer functions in
display “C”
f Push operating lever up or down
(selection field D must be switched off).
The following displays can be called step by step:
– Average speed (ø mph),
– Average consumption (ø mpg),
– Range on remaining fuel (mls ),
– Tire pressure
– Navigation information (if activated in the SET menu).
Note
The values “Average speed”, “Average consump-
tion” and “Daily trip mileag e” can be reset to zero
in the SET menu.

Instruments, On-Board Computer, Warnings
147
TPM
Tire Pressure MonitoringfPlease see the chapter “TIRE PRESSURE FOR
COLD TIRES (68 °F/20 °C)” on Page 277.
The Tire Pressure Monitoring continuously
monitors tire pressure and tire temperature on all
four wheels and warns the driver when the tire
pressure is too low.
The display as well as the settings for the Tire
Pressure Monitoring take place on the on-board
computer.
However, you must still adjust the tire pressure on
the wheel. f
The driver is responsible for filling the tires
correctly and making the correct settings on
the on-board computer.
The Tire Pressure Monitoring offers the following
functions:
– Display of the actual ti re pressure while the
vehicle is in motion.
– Display of the deviation from the required pressure (refilling pressure).
– Display of currently set tire size and type.
– Tire pressure warnings in two stages.
Warning!
f Despite the advantages offered by the Tire
Pressure Monitoring, it is still the driver’s re-
sponsibility to update the corresponding set-
tings in the on-board computer and maintain
the pressure in the tires.
Low tire pressure reduces the road safety of
the vehicle and destroys the tire and wheel.
f When a flat tire has been displayed, immedi-
ately stop in a suitable place and check the
tires for damage. If necessary, remedy the
damage with a tire sealant.
f Do not by any means continue to drive with
damaged tires.
f Sealing the tire with tire sealant is only an
emergency repair, so you can drive to the next
authorized Porsche dealer. The maximum per-
mitted speed is 50 mph (80 km/h). f
Do not drive with tires whose tire pressure
drops again in a short period of time. In cases
of doubt, have tires checked by an authorized
Porsche dealer.
f Damaged tires must be immediately replaced
by an authorized Porsche dealer.
Tire repairs are not permissible under any
circumstances.
f If a fault occurs in the Tire Pressure Monitoring
(e.g. defective wheel tr ansmitter), contact an
authorized Porsche dealer immediately and
have the damage repaired.
The tire pressure will not be monitored at all or
will be monitored only partially by defective
Tire Pressure Monitoring.
f Tires lose air over time without a tire defect
being present. A tire pressure warning will then
appear in the on-board computer display.
Correct the tire pressure at the next oppor-
tunity.
f The Tire Pressure Monitoring gives a warning
about tire damage due to natural pressure loss
as well as about a gradual loss of pressure due
to foreign objects.
The Tire Pressure Mnitoring cannot warn you
about tire damage that occurs suddenly (e.g.
flat tire due to abrupt external effects).

148
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 156.
You can read the tire pressures to be
corrected in this display.

Instruments, On-Board Computer, Warnings
149
The tire pressure to be corrected (refill pressure)
is indicated on the displayed wheel.
Example: If “ –1.5 psi (–0.1 bar)” is displayed,
1.5 psi (0.1 bar) must be added to this tire.
Note
The tire pressure menu can only be called up when
the vehicle is stationary.
Calling up the “Info pressure” display
fPush operating lever forward in order to switch
on the selection field.
f Select “TPM” with the operating lever.
f Push operating lever forward.
The display changes to the tire pressure menu.
f Select “Info pressure” with the operating lever.
f Push operating lever forward.
Note
After the ignition is switch ed on, it can take up to
approx. 1 minute before all tire pressures are
displayed. Dashes (“-.-”) appear instead of the tire
pressures. Tire type info in Tire pressure menu
Information about the currently set tires:
– Tire type: Summer tires, winter tires
– Tire size: 17, 18, 19 inch
“Info tires” shows the current tire settings.
Calling up the “Info tires” display
f
Push operating lever forward in order to switch
on the selection field.
f Select “TPM” with the operating lever.
f Push operating lever forward.
The display changes to the tire pressure menu. f
Select “Info tires” with the operating lever.
f Push operating lever forward.
Tire selection in the “Set” menu
f Push operating lever forward in order to switch
on the selection field.
f Select “TPM” with the operating lever.

150
Instruments, On-Board Computer, Warnings
f
Push operating lever forward.
The display changes to the tire pressure menu. f
Select “Set” with the operating lever. fPush the operating lever forward.
f Select desired tire type:
summer or winter.
f Push operating lever forward.
A display for confirming the selected type of
tire appears.

Instruments, On-Board Computer, Warnings
151
fSelect “Continue” and push the operating lever
forward. f
Select the appropriate tire size (17, 18 or 19
inch) and push operating lever forwards. A dis-
play for confirming the selected tire size ap-
pears.
Note
This menu is displayed only if the tire pressures
are different for the approved tire sizes. f
Select “Continue” and push the operating lever
forward.