244
Shifting Gear, Traction Systems
Engine Braking Support
(Assistance when heading downhill)The Porsche Down-Hill Assistant is an assistance
system which helps the driver at slower downhill
driving up to approx. 12 mph (20 km/h), e.g., on
steep slopes or on wintry mountain roads.
As long as the gas pedal is not used when
traveling downhill, the Porsche Down-Hill Assistant
is active and brakes the vehicle.
The braking ability of the Engine Braking Support
is affected by slippery surfaces (e.g., on icy or
loose surfaces), like all brakes.
If road grip is lost on one or more wheels, the
system brakes the wheels which have good road
contact.
Conditions:
– The gas pedal must not be used when
travelling downhill.
– The speed must not exceed 12 mph
(20 km/h).
–Vehicles with Tiptronic S:
The selector lever position D, M or R must be
engaged.
–Vehicles with manual transmission:
The reverse gear or any other gear (1. - 6. )
must be engaged. The clutch pedal must not
be used when travelling downhill.
Warning!
Risk of accident. Reduced braking ability on
a slippery surface.
fAlways adjust your driving style to the driving situation.
Tip on driving
The Porsche Down-Hill Assistant is active when
driving downhill either forwards or backwards.
Checks on test standsPower measurement
Power measurements on roller test stands are not
approved by Porsche.
Brake tests
Brake tests must be carried out only in High Range
and on plate-type test stands or roller test stands.
The following limit values must not be exceeded
on roller test stands:
– Testing speed 4.7 mph (7.5 km/h)
– Test duration 20 seconds
Parking brake test
Parking brake tests on the brake tester must be
performed only with the ignition switched off and
the selector lever in position N or the gearshift le-
ver in neutral.Balancing wheels on the vehicle
During finish balancing of the wheels, the entire ve-
hicle must be lifted and the wheels must be free to
turn.
Dynamometer testing procedure Some U.S. states and Canadian provinces con-
duct emissions inspection/maintenance testing in-
volving the use of two-wheel dynamometer.
A two-wheeled dynamometer is a treadmill type
device upon which a single axle of the car, the driv-
ing axle of the vehicle, rotates to simulate vehicle
operation on the road while the vehicle remains
stationary.
Your Porsche Cayenne has a full-time four-wheel
drive system which cannot be disabled. Severe
damage to the powertrain can result if tested on a
two-wheel dynamometer.
Warning!
To avoid severe powertrain damage and a
possible unexpected movement of the vehi-
cle.
fYour Porsche Cayenne vehicle must never be
tested on a two-wheel dynamometer.
fAdvise the emission station of this warning be-fore testing the vehicle.
Maintenance, Car Care
285
High-pressure cleaning units
Warning!
High-pressure cleaning units can damage
the following components:
–Tires
– Logos, emblems
– Painted surfaces
– Widened fenders
– Lock and latch of the removable towing attach-
ment
– Seals of the electrically retractable ball hitch
– Alternator, valve covers
– ParkAssist sensors
fPlease observe the operating instructions from
the unit manufacturer.
fAlways cover the lid over the brake fluid reser-
voir prior to cleaning. Never point the cleaning
jet directly at the lid.
fWhen cleaning with a flat-jet nozzle or the like,
maintain a minimum distance of 21 in.
(50 cm).fNever use high-pressure cleaning units with a
round-jet nozzle.
A high-pressure cleaning unit with round nozzle
will damage your vehicle. The tires are particu-
larly susceptible to damage.
fDo not point the cleaning jet directly at any of
the aforementioned components.
WashingThe best protection for the car from the damaging
effects of the environment is frequent washing and
preservation. The underside of the car should also
be thoroughly washed for cinders, salt or sanding
at winter‘s end.
The longer salt, road dust, industrial dust, insect
remains, bird excrement, and tree exudations (res-
in, pollen), etc. are allowed to remain on the body-
work, the more serious is their harmful effect.
New cars should be washed carefully with plenty
of clear water to protect the new paint work.
Dark paint finishes show up the smallest of sur-
face damage (e.g. scratches) more readily than
lighter colors.
Dark colors are also more susceptible to scratch-
ing because of the composition of their pigments
and require particularly careful paint care.fDo not wash your car in bright sunlight or while
the bodywork is still hot.
fWhen washing by hand, use abundant water, a
soft sponge or wash brush and Porsche car
shampoo.
fBegin by spraying the body thoroughly with wa-
ter to rinse away loose dirt.
fAfter washing, rinse the car with plenty of wa-
ter and then dry with a chamois leather.
Do not use the same chamois leather for dry-
ing as you use for cleaning the windshield and
windows.
Warning!
Moisture which gets on the brakes during a
car wash can reduce braking efficiency or
make the brake pull unevenly which could in-
crease the danger of an accident, causing
serious personal injuries or death.
fAlways apply the brakes a few times after
washing the car to test braking efficiency and
dry the brake discs.
When doing this, take care not to hamper other
road users behind you (traffic conditions per-mitting).
340
Practical Tips, Minor Repairs
Fuse assignment – fuse box in right side of dashboard
No. Designation Rating in A1
Towing attachment
15
2 ParkAssist5
3
Towing attachment
15
4 Telephone/telematics control unit5
5
Towing attachment
15
6 Porsche Stability Management (PSM)30
7
Transfer box (center differential lock), telephone preparation
5
8 Additional high beam, vehicle electrical system control unit 20
9
CD changer, DVD navigation
5
10 TV tuner, satellite receiver5
11
Radio or Porsche Communication System (PCM)
10
12 Radio booster30
1314 Tail light, left; central locking system, power windows, mirrors 1515
Power window, rear right
25
16
17
Low beam, right; high beam, right; vehicle electrical system control unit
15
18 Heated rear window relay30
19
Brake booster, towing attachment
30/25
20
21
Hood open switch, spare wheel release
10
Index
397
Main menu............................................ 94
MPH limit.............................................. 98
Operation, controls ............................... 92
Settings ............................................. 116
Spare wheel ....................................... 106
System .............................................. 109
Telephone menu ................................... 95
Tire pressure ............................. 102
, 104
Tire sealant/sealing set ....................... 107
Tire type ............................................ 105
Units .................................................. 122
Vehicle info ........................................... 99
Warnings ............................................ 100
NNavigation system ...................................... 191
Normal level ............................................... 254OOctane ratings ............................................ 280
Odometer .................................................... 88
Off delay ........................................... 121
, 168
Off-road ABS ..................................... 242, 249
Off-road driving ........................................... 245
Recommendation ................................ 246
Off-road shifting
Limit speed ............................... 231, 234
Oil ............................................................. 261
Change .............................................. 266
Consumption ........................................ 14
Dipstick .............................................. 263
Filler opening ...................................... 264
Performance class .............................. 266Temperature gauge...............................86
Topping up .........................................264
Viscosity.............................................266
Warnings ............................................262
Oil level
Checking ............................................262
On-board computer..............................92
, 205
Basic Screens.......................................93
Clock .................................................116
Collapsible spare wheel .......................107
Comfort..............................................118
Factory settings ..................................123
Language ...........................................122
Level ..................................................100
Lighting ..............................................121
Load ..................................................108
Locks/reduction..................................101
Main menu ............................................94
MPH limit ..............................................98
Operation, controls...............................92
Settings .............................................116
Spare wheel........................................106
System...............................................109
Telephone menu ...................................95
Tire pressure .............................102, 104
Tire sealant/sealing set .......................107
Tire type.............................................105
Units ..................................................122
Vehicle info ...........................................99
Warnings ............................................100
Operating in other countries.........................276
Oxygen sensor ...........................................283
PPaint ......................................................... 287
Panic button ................................................ 17
Panorama roof system................................ 173
Comfort function ................................ 175
ParkAssist ............................... 179
, 181
, 217
Parking...................................................... 227
Parking aid .................................. 38
, 68, 179
Parking brake .............................................. 75
Test stand ......................................... 244
Warning light ............................... 76, 128
Parking heater ........................................... 158
Activating the memory ........................ 161
Faults ................................................ 162
Programming ............................ 159, 160
Switching on and off ........................... 159
Parking light .............................................. 135
Particle filter .............................................. 272
PASM ............................................... 235, 257
Display .............................................. 257
Indicator light ..................................... 129
Warning light ...................................... 257
Passenger compartment ............................ 215
Passenger compartment monitoring .............. 28
Passenger compartment monitoring
system .............. 24
, 26, 29, 30, 32, 34, 35
Passenger-seat drawer............................... 196
PCM .......................................................... 191
Person buttons ............................................ 37
Plastic parts .............................................. 290
Polishing.................................................... 287
Index
401
UUltrasonic measurement .............................. 182
Ultrasound sensors, ParkAssist.................... 180
Ultrasound sources ..................................... 182
Undercoating .............................................. 289
Unlocking, keyless ........................................ 22
Immobilizer........................................... 23
Uphill driving............................................... 248
Traction ............................................. 248VVehicle
Battery ............................. 191
, 344
, 357
Care .................................................. 284
Data bank........................................... 378
Identification number ........................... 378
Keys ........................................... 17, 358
Laying up ........................................... 293
Lowering ............................................ 256
Putting into operation .......................... 345
Raising ............................................... 255
Recovery ............................................ 376
Securing against rolling ....................... 316
Storage.............................................. 345
Transport ...................... 21
, 23, 29, 256
Washing ............................................. 285Vehicle door
Locking .........................................21
, 23
Unlocking .............................................20
Vehicle key
Battery ...............................................358
Ventilation.................................144
, 148
, 152
Vents .........................................................143
Central ......................................150, 156
Footwell ....................................150, 156
Side ..........................................150, 156
Vertical coupling load..................................213
Voltmeter .....................................................90
Battery/generator warning .....................90
WWarning triangle ..........................................196
Warnings ....................................................100
Washer fluid
Level ..................................................270
Topping up .........................................270
Washer system, windshield wipers ................138
Washing .....................................................285
Water crossing ...........................................250
Weights ......................................................387
Wheel alignment..........................................305
Wheel bolts ................................................313
Removing ..................................322
, 331
Wheel change .............................................307
Wheels ..............................................290, 297
Adjusting ............................................305
Change .....................................315, 322
Storing ...............................................306
Tracks................................................382
Wheel balancing .........................244, 305Windows.................................................... 288
Windshield ............................... 150
, 156
, 270
Windshield wiper/washer stalk .................... 137
Windshield wipers..................... 139
, 204
, 273
Blades ............................................... 288
Front ................................................. 138
Rear .................................................. 139
Switch ............................................... 137
Winter
Driving............................................... 345
Tires ................................................. 382
Wiper blades..................................... 273, 288
Changing .................................. 273, 275
Working on your vehicle .............................. 260