Shifting Gear, Traction Systems
235
Power-Transmission and Running-Gear Control SystemsA complex interconnection of all control systems acting in power transmission and in the running gear has been realised in your Porsche.
All control systems have been linked with the aim of combining the best possible driving performance with maximum safety.
The following systems are involved:
System/designation Scope
PTM
Porsche Traction Management– Full-time all-wheel drive
– Electronically controlled center differential lock
– Automatic brake differential (ABD)
– Traction control system (TCS)
– Reduction gear/Low Range
PTM Plus
Porsche Traction ManagementIn addition to the PTM features, PTM Plus also includes:
– Electronically controlled rear differential lock
– Hydraulically disengageable anti-roll bars
PSM
Porsche Stability Management– Stability management system
– Anti-lock brake system (ABS)
– Traction control system (TCS)
– Automatic brake differential (ABD)
– Engine drag torque control (MSR)
Air suspension
with level control and height adjustment– Fully load bearing air spring struts with integral shock absorbers
– Air supply system with pressure accumulator
PAS M
Porsche Active Suspension Management– Shock absorber system with adaptive, continuous shock absorber control
250
Shifting Gear, Traction Systems
Water crossingfPlease observe the chapter “GROUND CLEA-
RANCE” on Page 390.
Danger!
Danger of drowning if water enters the vehi-
cle. Risk of damage to the engine and acces-
sories if water penetrates.
fBefore driving through water, check the water
depth A, water speed and the condition of the
surface beneath it.
The water must not be deeper than 20 in.
(50 cm).
The water must not be deeper than 22 in.
(55.5 cm) for vehicles with level control and
height adjustment.
fCheck the door sills and rubber seals before
starting to drive.
fDo not drive through deep or rapidly flowing
water.
Deep or rapidly flowing water, e.g. mountain
streams, can cause the car to deviate from the
desired path.
fAvoid a "bow wave" by driving at an appropriate
speed.
fNever open the doors when driving through wa-
ter.Soiling can impair the braking action.
fCheck and clean the brakes if they have been
soiled.
Danger of steering assistance failing during
a long journey in the water if the drive belt
slips.
fIf the steering assistance fails, more effort will
be required to steer.
Danger of damaging electrical systems
fAvoid driving through salt water.
Notes on operation
fActivate Low Range.
fSwitch the air conditioner off.
fSwitch the headlights off.
254
Shifting Gear, Traction Systems
Air Suspension with Level Control
and Height AdjustmentOn vehicles with air suspension, the driver can set
five different level steps manually.
The preselected level is automatically adjusted to
suit the vehicle speed.
The height of the car is automatically kept
constant when the car is loaded.
Tip on driving
It is not permissible to drive on public roads with
the car in the terrain or special terrain setting.Note on operation
Frequent level changes can cause the compressor
to overheat. In this case, the compressor must
cool for several minutes before the level adjust-
ment is fully functional again.
Normal levelThe ground clearance at normal level is around
8.5 in. (217 mm).Terrain levelThis setting is intended for off-road driving, field
paths and forest paths, etc.
The vehicle is raised by around 1 in. (26 mm) com-
pared to normal level.
Terrain level can be selected only manually at
speeds below around 50 mph (80 km/h).
The car is automatically lowered to normal level at
speeds exeeding around 50 mph (80 km/h).
The car is automatically raised to terrain level
when Low Range is activated.This setting is intended only for extremely chal-
lenging terrain requiring maximum ground clear-
ance. The vehicle is raised by 2.2 in. (56 mm)
compared to normal level.
The warning light in the instrument panel comes
on when the special terrain level has been
reached.
Special terrain level can be selected only at
speeds below around 19 mph (30 km/h).
The car is automatically lowered to terrain level at
speeds exeeding around 19 mph (30 km/h).
Low levelThis level is intended for high-speed driving. Above
speeds of around 78 mph (125 km/h), the car is
lowered by around 1 in. (27 mm) compared to nor-
mal level.
When the speed drops to below around 25 mph
(40 km/h), the car is automatically raised to nor-
mal level.Special low levelAt extremely high speeds, for example when oper-
ated on a race track, the car is lowered 0.4 in.
(11 mm) compared to the low level.
Special terrain level
260
Maintenance, Car Care
Exercise Extreme Caution when
Working on your Vehicle
Danger!
Ignoring the following instructions may
cause serious personal injury or death.
fThe engine compartment of any motor vehicle
is a potentially hazardous area. If you are not
fully familiar with proper repair procedures, do
not attempt the adjustments described on the
following pages.
This caution applies to the entire vehicle.
fO n l y w o r k o n y o u r v e h i c l e o u t d o o r s o r i n a w e l l
ventilated area.
fEnsure that there are no open flames in the
area of your vehicle at any time when fuel
fumes might be present. Be especially cau-
tious of such devices such as hot water heat-
ers which ignite a flame intermittently.
fBefore working on any part in the engine com-
partment, turn the engine off and let it cool
down sufficiently. Hot engine compartment
components can burn skin on contact.
fBe alert and cautious around engine at all
times while the engine is running.
If you have to work on the engine while it is run-
ning, always put the handbrake on and put the
gearshift lever in neutral or the selector lever
in position P.fIn particular, be very careful to ensure that
items of clothing (ties, shirt, sleeves etc.), jew-
elry, long hair, hand or fingers cannot get
caught in the fan, belts or other moving parts.
The radiator and radiator fans are in the front
of the car.
The fans can start or continue running as a
function of temperature, even with the engine
switched off.
Carry out work in these areas only with the en-
gine off and exercise extreme caution.
fYour Porsche is equipped with an electronic ig-
nition system. When the ignition is on, high volt-
age is present in all wires connected with the
ignition system; therefore, exercise extreme
caution when working on any part of the engine
while the ignition is on or the engine is running.
fAlways support your car with safety stands if it
is necessary to work under the car. The jack
supplied with the car is not adequate for this
purpose.
For vehicles with air suspension with level con-
trol and height adjustment switch off level con-
trol. Therefore:
Please observe the chapter “RAISING VEHICLE
WITH THE JACK” on Page 256.
fWhen working under the car without safety
stands but with the wheels on the ground,
make sure the car is on level ground, the
wheels are blocked, and that the engine can-
not be started.
Withdraw ignition keys (switch ignition off in ve-
hicles that have Porsche Entry & Drive).fDo not smoke or allow an open flame around
the battery or fuel.
Keep a fire extinguisher in close reach.
fIncomplete or improper servicing may cause
problems in the operation of the car. If in doubt
about any servicing, have it done by your au-
thorized Porsche dealer.
Improper maintenance during the warranty pe-
riod may affect your Porsche warranty cover-
age.
fSupplies of fluids, e.g. engine oil, washer fluid,
brake fluid or coolant, are hazardous to your
health.
Keep these fluids out of children's reach and
dispose of them in accordance with the appro-
priate regulations.
fSome countries require additional tools and
special spare parts to be carried.
Please make enquiries before driving abroad.
Power measurementsPower measurements on dynamometers are not
approved by Porsche.
296
Practical Tips, Minor Repairs
Exercise Extreme Caution when
Working on your Vehicle
Danger!
Ignoring the following instructions may
cause serious personal injury or death.
fThe engine compartment of any motor vehicle
is a potentially hazardous area. If you are not
fully familiar with proper repair procedures, do
not attempt the adjustments described on the
following pages.
This caution applies to the entire vehicle.
fO n l y w o r k o n y o u r v e h i c l e o u t d o o r s o r i n a w e l l
ventilated area.
fEnsure that there are no open flames in the
area of your vehicle at any time when fuel
fumes might be present. Be especially cau-
tious of such devices such as hot water heat-
ers which ignite a flame intermittently.
fBefore working on any part in the engine com-
partment, turn the engine off and let it cool
down sufficiently. Hot engine compartment
components can burn skin on contact.
fBe alert and cautious around engine at all
times while the engine is running.
If you have to work on the engine while it is run-
ning, always put the handbrake on and put the
gearshift lever in neutral or the selector lever
in position P.fIn particular, be very careful to ensure that
items of clothing (ties, shirt, sleeves etc.), jew-
elry, long hair, hand or fingers cannot get
caught in the engine-compartment blower, fan,
belts or other moving parts.
The radiator and radiator fans are in the front
of the car.
The fans can start or continue running as a
function of temperature, even with the engine
switched off.
Carry out work in these areas only with the
engine off and exercise extreme caution.
fYour Porsche is equipped with an electronic
ignition system. When the ignition is on, high
voltage is present in all wires connected with
the ignition system; therefore, exercise
extreme caution when working on any part of
the engine while the ignition is on or the engine
is running.
fAlways support your car with safety stands if it
is necessary to work under the car. The jack
supplied with the car is not adequate for this
purpose.
For vehicles with air suspension with level con-
trol and height adjustment:
Please observe the chapter “AIR SUSPENSION
WITH LEVEL CONTROL AND HEIGHT ADJUST-
MENT” on Page 254.fWhen working under the car without safety
stands but with the wheels on the ground,
make sure the car is on level ground, the
wheels are blocked, and that the engine can-
not be started.
Remove the ignition key.
fDo not smoke or allow an open flame around
the battery or fuel.
Keep a fire extinguisher in close reach.
fIncomplete or improper servicing may cause
problems in the operation of the car. If in doubt
about any servicing, have it done by your
authorized Porsche dealer.
Improper maintenance during the warranty
period may affect your Porsche warranty cov-
erage.
fSupplies of fluids, e.g. engine oil, brake fluid or
coolant, are hazardous to your health. Keep
these fluids out of children's reach and dispose
of them in accordance with the appropriate
regulations.
fSome countries require additional tools and
special spare parts to be carried.
Please make enquiries before driving abroad.
Notes on Minor RepairsTool kitThe tool kit is accommodated in the spare-wheel
well under the cover of the loadspace floor.
Practical Tips, Minor Repairs
373
Height adjustment for low beam/
high beam and additional high beam1. Push down cover in the engine compartment
and remove.
2. Switch ignition on.
3. Switch on low beam and/or high beam.
4. Adjust low beam in direction of the arrow.
Changing Headlights from Left to
Right-Hand TrafficIf you travel to a corresponding country where traf-
fic uses the other side of the road, the headlights
must be partially masked with films when you
cross the border.
fYou can obtain the films and a set of instruc-
tions from an authorized Porsche dealer.
392
Index
IndexAABD ......................................... 235
, 237
, 239
ABS ......................................... 235
, 238
, 241
Off road ............................................. 242
Warning light ...................................... 241
After driving off road................................... 246
Aftermarket Alarms ..................................... 190
Air cleaner.................................................. 272
Air conditioning
Central vents ............................. 150, 156
Cover flap .......................................... 144
Disabling control panel (rear) ............... 153
Display ............................. 145
, 148
, 152
Footwell .................................... 150, 156
Four zone ........................................... 152
Fresh-air intake ................................... 143
Mono function ..................................... 149
Rear.......................................... 153, 157
REST mode ............................... 151, 157
Sensors ............................................. 144
Setting air quantity ............ 146
, 149
, 155
Setting temperature ................... 149, 154
Side vents ................................. 150, 156
Two zone .................................. 145, 148
Vents ................................................. 143
Windshield ................................. 150, 156
Air quantity
Setting ............................. 146
, 149
, 155
Air suspension ................. 180
, 196
, 235
, 254
Airbag ................................................. 50, 292
Disposal ............................................... 51Function ............................................... 52
Switching off passenger airbag ............ 126
Switching on passenger airbag ............ 126
Unit ...................................................... 62
Warning light......................................... 54
Air-conditioned areas
Rear................................................... 157
Air-conditioning compressor....... 145
, 151
, 156
Alarm button................................................. 17
Alarm system24
, 26, 28, 29, 30, 32, 34, 35,
........................................................ 212
, 334
Alcantara.................................................... 292
All-Season tires .................................. 382, 383
All-Terrain tires ................................... 382, 383
All-wheel drive ........................... 129
, 235
, 237
Anti-freeze content ...................................... 267
Anti-lock brake system .............. 235
, 238
, 241
Anti-roll bars
Disengageable .................................... 232
Armrest...................................................... 195
Ashtray
Front .................................................. 187
Rear................................................... 187
Assembly aid ..................................... 322, 331
Assistance when driving downhill .................. 244
Audio
Tips ................................................... 189
AUTO button .................... 148
, 149
, 152
, 154
AUTO LOCK ......................................... 27, 120
AUTO UNLOCK .................................... 27, 120
Automatic anti-dazzle operation...................... 69
Automatic brake differential ....... 235
, 237
, 239Automatic circulating-air mode ............ 150
, 155
Automatic mode, air conditioning148
, 149
, 154
Automatic transmission fluid ........................ 272
BBattery ......................... 70
, 73, 90, 191
, 344
After charging ..................................... 357
Car key .............................................. 358
Care................................................... 344
Charge state....................................... 344
Charging ............................................ 357
Installing ............................................. 354
Putting vehicle into operation ...............345
Removing ........................................... 352
Removing/installing .................... 347, 351
Replacing ........................................... 346
Warning light....................................... 127
Winter driving...................................... 345
Before driving off.................................12, 246
Belts ............................................................ 46
Fastening ............................................. 48
Height adjustment ................................. 49
Opening ............................................... 48
Tensioner ............................................. 47
Warning light.................................. 47, 60
Brake ...........................................................76
Booster ................................................ 78
Discs ................................................... 79
Pads .................................................... 79
Warning light......................................... 77
Index
395
Footwell light .............................................. 168
Fresh-air intake ........................................... 143
Front seat with memory................... 37
, 38, 68
Front seats ................................................... 36
Adjusting the seats................................ 36
Seat position ........................................ 36
Front windshield wiper ................................. 138
Fuel .................................................... 88
, 277
Economy ............................................ 276
Evaporation control ............................. 281
Level gauges ........................................ 88
Recommendations .............................. 280
Fuel containers, portable ........................ 6, 281
Fuel gauge ................................................... 88
Fuel quality ..................................................... 8
Function keys ............................................... 64
Lighting ................................................ 65
Fuse assignment......................................... 337
Fuses......................................................... 335
GGarage door opener.................................... 184
Allocating ........................................... 185
Changeable code system .................... 185
Deleting ............................................. 186
Fixed code system .............................. 185
Gas discharge lamp .................................... 366
Glasses case .............................................. 193
Glove compartment .................................... 194
Gross weight .............................................. 213
Ground clearance ....................................... 389
HHand-held transmitter..................................184
Headlight beam adjustment........125
, 134
, 216
Headlights ................................216
, 290
, 361
Bi-Xenon ....................................363, 366
Changing for left-hand traffic ................373
Closing the housing lid.........................364
Halogen.....................................363, 365
Height adjustment ...............................373
Opening the housing lid .......................364
Setting ...............................................372
Washer system ...................................138
Headrest ......................................................40
Installing ...............................................40
Removing .............................................40
Setting .................................................40
Heated rear window .........143
, 144
, 148
, 152
Height adjustment ..............................235, 254
High beam.........................................132, 135
Indicator light .................................82, 84
Switch ................................................135
High Range.............101
, 223
, 225
, 230
, 234
On-road driving program ......................229
High-pressure cleaning units.........................285
Hillholder ....................................................242
Horn ............................................................62
IIdentification number ...................................378
Idling..........................................................222
Ignition lock ..................................................70
Immobilizer...................................................21Inclination sensor ............. 24
, 26, 28, 34, 35
Function indication................................ 32
Monitored areas ................................... 28
Switching off ........................................ 29
Switching on ........................................ 29
Switching on, temporarily ...................... 30
Instrument panel
Lighting ............................................. 134
Interior light, front...................................... 166
Interior lighting ........................................... 166
Interior mirror .............................................. 66
ISOFIX system .............................................. 60
JJack ................................................. 256
, 311
Jacking point ............................................. 319
Jump lead starting
Leads ................................................ 356
Jumper cables ........................................... 355
KKeys............................................................ 17
Changing the battery .......................... 358
Kickdown................................................... 224