246
Shifting Gear, Traction Systems Lowering the vehicle
1st actuation: Low level
2nd actuation: Loading level
Warning messageVarious messages are indicated on the multi-pur-
pose display of the instrument panel if there is a
system fault or if the compressor switches off due
to overload.fPlease observe the chapter “WARNING LIGHTS
AND WARNING MESSAGES” on Page 122.
fAdapt your driving behavior to the changed
conditions.
fConsult an authorized Porsche dealer in order
to remedy a system fault.
fIf the overload-protection function causes the
compressor to switch off, wait for a time until
it has cooled down. The system will function
again as soon as it has cooled sufficiently.
The warning message appears when the control
system is switched off and when the collapsible
spare wheel is being filled. This does not indicate
a fault.
The warning message will go out once these pro-
cedures have been completed.
Raising vehicle with the jackWhenever it is necessary to jack up the vehicle:
fManually set normal level and then switch off
level control.
Switching off level control
1. Switch ignition on.
2. Push rocker switch forward for 5 to
10 seconds.
A message is shown on the multi-purpose
display of the instrument panel.
The vehicle can now be raised.
Switching level control back on
1. Switch ignition on.
2. Push rocker switch forward for 5 to
10 seconds or
3. Drive forward with the vehicle.
Level control switches on automatically.Transporting the vehicles on car trains,
ferries and car transportersfTie the vehicle down only at its wheels.
Practical Tips, Minor Repairs
287
Traction AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B,, and C and they represent the tire's abil-
ity to stop on wet pavement as measured under
controlled conditions on specified government
test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance.
Warning!
The traction grade assigned to this is based
on braking (straight-ahead) traction tests
and does not include cornering (turned) trac-
tion, acceleration, hydroplaning or peak
traction characteristics.Temperature A, B, C
The temperature grades are A (the highest), B and
C, representing the tire's resistance to the gener-
ation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified
indoor laboratory test wheel.
Sustained high temperatures can cause the mate-
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire failure.
The grade C corresponds to a level of perform-
ance which all passenger car tires must meet un-
der the Federal Motor Vehicle Safety Standard No.
109.
Grades B and A represent higher levels of per-
formance on the laboratory test wheel than the
minimum required by law.
Warning!
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded.Excessive speed, underinfla-
tion, or excessive loading, either separately
or in combination, can cause heat buildup
and possible tire failure.
290
Practical Tips, Minor Repairs
Tire traction
Warning!
When driving on wet or slushy roads, a
wedge of water may build up between the
tires and the road. This phenomenon is
known as “hydroplane“ and may cause par-
tial or complete loss of traction, vehicle con-
trol or stopping ability.
fReduce speed on wet surfaces to prevent this.Tire lifeTire life depends on various factors, i.e., road sur-
faces, traffic and weather conditions, driving hab-
its, type of tires and tire care.
fInspect your tires for wear and damage before
driving off. If you notice uneven or substantial
wear, wheels might need alignment or tires
should be balanced or replaced.
Tire wearThe original equipment tires on your Porsche have
built-in tire wear indicators. They are molded into
the bottom of the tread grooves and will appear as
approximately 1/2 in. (12 mm) bands when the
tire tread depth is down to 1/16 of an in (1.6 mm).
When the indicators appear in two or more adja-
cent grooves, it is time to replace the tires. We
recommend, however, that you do not let the tires
wear down to this extent.
Worn tires cannot grip the road surface properly
and are even less effective on wet roads.
In the United States, state laws may govern the
minimum tread depth permissible. Follow all such
laws.
Danger!
Driving on worn tires can result in loss of con-
trol of the vehicle and could cause serious
personal injuries or death.
fDo not drive with worn tires or tires showing
cuts or bruises as they may lead to sudden de-
flation and loss of control which could cause
severe personal injury.
fSpecialized high performance tires on high
performance sport utility vehicles exhibit more
wear than those on a family sedan, or even a
high performance sedan.
Therefore, it is important to check your tire
pressure and condition at least every two weeks.
fIf you notice that tires are wearing unevenly,
consult your Porsche dealer.
Uneven wear may not always be due to improper
wheel alignment. It can be the result of individual
driving habits such as cornering at high speeds. If
the tire pressure is not checked and adjusted reg-
ularly, abnormal tire wear can also occur.
Index
383
Off-road driving ........................................... 236
Recommendation ................................ 237
Off-road shifting
Limit speed ............................... 223
, 226
Oil ............................................................. 251
Change .............................................. 255
Consumption ........................................ 14
Dipstick .............................................. 253
Filler opening ...................................... 253
Performance class .............................. 255
Temperature gauge.............................. 84
Topping up ......................................... 253
Viscosity ............................................ 255
Oil level
Checking ............................................ 252
On-board computer.............................. 90, 200
Basic Screens ...................................... 91
Clock ................................................. 114
Collapsible spare wheel ....................... 105
Comfort ............................................. 116
Factory settings .................................. 121
Language ........................................... 120
Level.................................................... 98
Lighting .............................................. 119
Load .................................................. 106
Locks/reduction ................................... 99
Main menu............................................ 92
Operation, controls ............................... 90
Settings ............................................. 114
Spare wheel ....................................... 105
System .............................................. 107
Telephone ............................................ 93
Tire pressure ............................. 100, 102
Tire sealant/sealing set ....................... 106Tire type.............................................103
Units ..................................................120
Vehicle info ...........................................97
Warnings ..............................................98
Operating in other countries.........................265
Oxygen sensor ...........................................272
PPaint ..........................................................276
Panic button .................................................18
Panorama roof system................................167
Comfort function .................................169
ParkAssist ................................173
, 175
, 211
Parking ......................................................220
Parking aid ..........................................38, 173
Parking brake ...............................................74
Test stand ..........................................235
Warning light................................75, 126
Parking heater ............................................153
Activating the memory .........................156
Faults .................................................157
Programming.............................154, 155
Switching on and off ............................154
Parking light ...............................................133
Particle filter ...............................................261
PASM ................................................227, 247
Display ...............................................247
Indicator light ......................................127
Warning light.......................................247
Passenger compartment .............................209
Passenger compartment monitoring system
..................24
, 26, 28, 29, 30, 32, 34, 35
Passenger-seat drawer .......................188
, 191
PCM...........................................................186Person buttons ............................................ 37
Plastic parts .............................................. 279
Polishing.................................................... 276
Porsche Active Suspension
Management..................................... 227
, 247
Display .............................................. 247
Indicator light ..................................... 127
Warning light ...................................... 247
Porsche Communication Management ......... 186
Porsche Down-Hill Assistant ........................ 235
Porsche Entry & Drive .................. 22
, 23, 194
Immobilizer .......................................... 23
Opening/locking rear window ................ 22
Opening/locking spare wheel bracket .... 22
Porsche Stability Management
.............................................. 227
, 230
, 313
Deactivating ....................................... 232
Indicator light ..................................... 126
Multifunctional light ............................. 232
Off road ............................................. 231
Switching on ...................................... 232
Warning light ........................ 80
, 82, 126
Porsche Traction Management ........... 227, 228
Power measurement .................................. 250
Power steering .......................................... 260
Power windows .............................. 33
, 34, 35
Comfort function (windows) ............ 34, 35
One-touch operation ............................. 34
Opening/closing windows ..................... 33
Readiness for operation ........................ 33
Storing end position............................. 35
Switching off (rear)............................... 35
Power-transmission .................................... 227
Preservation .............................................. 276