2002-2010 Porsche Cayenne SUV Driving and Driving Safety -> Uphill driving User Manual
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Driving and Driving Safety -> Uphill driving for Your Porsche Cayenne SUV First Generation (2002-2010)

Driving and Driving Safety 211
Uphill driving
Danger!
Danger of severe or fatal injuries and risk of
damage if the vehicle should overturn.
f Do not turn round when driving uphill.
f If it is not possible to climb a gradient, the
vehicle must be backed down in reverse gear.
f Do not drive over embankments or slopes at
an angle to the line of maximum gradient.
f If the vehicle starts to tilt, immediately steer in
the direction of the tilt (line of slope).
f When driving uphill, never let the vehicle roll
back when in idle or not in gear.
Exclusive use of the footbrake is too risky in
such situations.
Note on operation
f Activate the Low Range programme before
taking extreme uphill or downhill gradients.
Tips on driving
f Do not perform manual gear changes when
driving, and try to avoid stopping.
f Avoid high engine speeds (max. 2,500 rpm).
Traction on uphill slopes
Note on operation
f Activate the Low Range programme and
engage differential lock(s) if necessary.
Tips on driving
f When driving uphill, go easy on the accelerator
and make sure that wheels have sufficient
traction (do not spin).
f Avoid high engine speeds (max. 2,500 rpm).
f Drive slowly.
212 Driving and Driving Safety
Driving downhill
Danger!
Danger of severe or fatal injuries and risk of
damage if the vehicle should overturn.
f Do not drive over slopes at an angle to the line
of maximum gradient.
f Drive downhill slowly, with the front wheels
pointing straight ahead.
f If the vehicle starts to tilt, immediately steer in
the direction of the tilt (line of slope).
f When driving downhill, never let the vehicle roll
when in idle.
f Use engine braking effect.
If the engine braking effect is not sufficient to
appropriately check the speed, gently apply
the footbrake.
Note on operation
f Activate the Low Range off-road driving
programme. The off-road ABS is switched on
automatically.
Tips on driving
The same general principle as for uphill driving
applies to downhill driving.
f Do not perform manual gear changes when
driving, and try to avoid stopping.
f Avoid high engine speeds (max. 2,500 rpm).
A special circuit of the off-road ABS permits
controlled brief lock-up of the front wheels so that
they can dig into the loose surface more effec-
tively.
Locked wheels slip and can no longer be steered.
f When driving down steep hills on unpaved
surfaces, brake carefully to prevent sliding.
Humps
f Pay attention to the ground clearance of the
vehicle. This information is provided in the
chapter Technical Data in this Driver’s Manual:
Please observe the chapter “GROUND CLEAR-
ANCE” on Page 370.
Note on operation
f Activate the Low Range programme and
engage differential lock(s) if necessary.
Tips on driving
f Just before reaching the hump, ease off the
accelerator slightly and use only the vehicle’s
momentum to cross the hump. This will
prevent the vehicle from jumping over the
hump and landing on the following downward
slope at excessive speed.
f Avoid high engine speeds (max. 2,500 rpm).
Driving and Driving Safety 213
Water crossing
f Pay attention to the ground clearance of the
vehicle. This information is provided in the
chapter Technical Data in this Driver’s Manual:
Please observe the chapter “GROUND CLEAR-
ANCE” on Page 370.
Danger!
Danger of drowning if water enters the
vehicle. Risk of damage to the engine and
accessories if water penetrates.
f Before driving through water, check the water
depth A, water speed and the condition of the
surface beneath it.
The water depth A must not exceed 50 cm
(55.5 cm for vehicles with level control and
height adjustment).
f Make sure that the door sills and rubber seals
are clean before starting to drive.
f Do not drive through deep or rapidly flowing
water.
Deep or rapidly flowing water such as
mountain streams can cause the vehicle to
deviate from the desired path.
f Avoid producing bow waves by driving at an
appropriate speed.
f Never open the doors when driving through
water.
Soiling can impair the braking action.
f Check and clean the brakes if they have been
soiled.
Danger of steering assistance failing during
a long journey in water if the drive belt slips.
f If the steering assistance fails, more effort will
be required to steer.
Danger of damage to the electrical systems.
f Avoid driving through salt water.
214 Driving and Driving Safety
Tips on driving
f Avoid high engine speeds (max. 2,500 rpm).
f Do not perform manual gear changes when
driving, and try to avoid stopping.
Moving off in water can be difficult due to the
high resistance and the loose surface involved.
f Start the water crossing at a shallow place at
walking speed.
f After checking the body of water, take the
shortest route through it.
f Never drive into water with momentum. The
resulting bow wave could damage the engine
and its accessories.
f Adjust your driving style to the unfamiliar
surroundings.
f Drive through the water slowly and at a
constant speed.
f Never turn around when crossing a body of
water.
f If it is not possible to cross the body of water,
the vehicle must be backed out of it in reverse
gear.
The servo pump and generator can fail if the
vehicle is driven through water for an extended
period.
f If the servo pump fails, substantially more
force is necessary in order to steer.
Maintenance note
The vehicle requires a special check after the
water crossing.
f Remove mud from the tyre tread.
f Briefly brake the brake pads dry after driving
through the water.
Driving and Driving Safety 215
Crossing obstacles
Caution!
Risk of damage to the underbody and
chassis components if obstacles are
traversed improperly.
f Always pay attention to the ground clearance
of your vehicle.
f Slowly drive over the middle of tree trunks.
boulders or other obstacles with one of the
front wheels.
f Cross the obstacle with the rear wheel in the
same way.
Note on operation
f Activate the Low Range programme and
engage differential lock(s) if necessary.
Tips on driving
f Have your passenger direct you if necessary.
f Avoid high engine speeds (max. 2,500 rpm).
f Drive slowly.
Driving on sand
Note on operation
f Activate the Low Range programme and
engage differential lock(s) if necessary.
Tips on driving
Loose sand is an especially tricky surface for off-
road driving.
You can often become stuck in sand within
minutes if you do not drive correctly in such situa-
tions.
f Drive at a brisk pace and do not stop under any
circumstances. Otherwise, the vehicle will
become bogged down.
f Follow existing tracks – provided that they
have not been covered by blown sand, are not
too deep and the vehicle’s ground clearance is
sufficient.
Pay attention to the ground clearance of the
vehicle. This information is provided in the
chapter Technical Data in this Driver’s Manual:
Please observe the chapter “GROUND CLEAR-
ANCE” on Page 370.
f Avoid high engine speeds (max. 2500 rpm).
216 Driving and Driving Safety
When driving on slopes with soft sand on vehicles
with Tiptronic S:
f Use the manual select mode M in addition to
the Low Range programme.
If your vehicle becomes stuck nevertheless:
Do not spin the wheels. Instead, use branches,
mats or similar items to provide adequate traction
so that you can drive out of the critical area.
Track ruts
Other vehicles leave ruts on many off-road
courses or gravel roads.
f Pay attention to the ground clearance of the
vehicle. This information is provided in the
chapter Technical Data in this Driver’s Manual:
Please observe the chapter “GROUND CLEAR-
ANCE” on Page 370.
Caution!
Risk of damage to the vehicle floor when
driving through ruts that are too deep.
f Always bear in mind the vehicle’s ground clear-
ance.
f Do not drive through ruts that are too deep.
Note on operation
f Activate the Low Range programme and
engage differential lock(s) if necessary.
Tips on driving
f In cases of doubt, drive with one wheel on the
grass strip.
f Avoid high engine speeds (max. 2,500 rpm).
f Drive slowly.

Related Topics

Driving and Driving Safety
Before driving off Tips for running in Ignition lock/steering lock Starting and stopping the engine Parking brake Footbrake Brief overview ? cruise control Cruise control Manual transmission, clutch Tiptronic S Selector lever positions Driving programmes for on-road and off-road driving Power-transmission and running-gear control systems Air suspension with level control and height adjustment Porsche Active Suspension Management (PASM) Porsche Dynamic Chassis Control (PDCC) Off-road driving Driving systems for off-road driving Airbag systems

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