ABS PORSCHE CAYNNE 2004 1.G Owners Manual

104
Lights, Turn Signals and Windshield Wipers
Light switch with driving light assistant Light switch without driving light assistant
Note on operation
If the ignition key is withdrawn and the door is
opened while the lights (not the parking light) are
on, an acoustic signal (gong) warns of possible
battery discharge.
In some countries, differences are possible
due to provisions of law.Automatic driving light assistantThe driving light assistant is a comfort function.
Your Porsche’s driving light (low beam) is switched
on and off automatically, irrespective of the
ambient brightness.
Despite possible support by the driving light assis-
tant, it is the responsibility of the driver to switch
on the driving light using the conventional light
switch in accordance with the relevant national
regulations.
Activating the headlights using the driving light
assistant does not therefore absolve the driver of
responsibility for the correct operation of the
driving light.
The low beam is switched on automatically in the
following situations:
–Dusk
– Darkness
– Travelling through tunnels
– Rain (in conjunction with the rain sensor)
– Highway driving
Light SwitchLight is switched off.
Automatic driving light assistant
Side lights
License plate light, instrument illuminati-
on
Low beam, high beam
Only when the ignition is switched on
Fog lights
Only when side lights or low beam are
switched on:
Pull switch to first click.
Indicator light lights up.
Rear fog light
Pull switch to second click.
Indicator light lights up.
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Multi-Purpose Display and Instruments
117
Instrument Panel USA ModelsAOil temperature gage
BTa c h o m e t e r
CClock
DClock setting button
ECooling system temperature gage
FMulti-purpose display
GFuel gage
HReset button for trip counter display
ISpeedometer
JMileage displays
KVoltmeter
Warning and indicator lights on the
tachometer
Indicator lights in central instrument
panelWarning and indicator lights on the
speedometer
Emission Control warning light
(Check Engine)
Airbag warning light
Safety belt warning light
PSM warning light
ABS warning light
Cruise control readiness
Turn signal indicator light, left
Turn signal indicator light, right
Trailer turn signal
Indicator light
Rear fog light indicator light
Tire pressure warning light
Differential locking indicator light
Brake warning light
Fog light indicator light
General warning
Observe warning message on the multi-
purpose display!
High beam indicator light
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Multi-Purpose Display and Instruments
119
Instrument Panel Canada ModelsAOil temperature gage
BTa c h o m e t e r
CClock
DClock setting button
ECooling system temperature gage
FMulti-purpose display
GFuel gage
HReset button for trip counter display
ISpeedometer
JMileage displays
KVoltmeter
Warning and indicator lights on the
tachometer
Indicator lights in central instrument
panelWarning and indicator lights on the
speedometer
Emission Control warning light
(Check Engine)
Airbag warning light
Safety belt warning light
PSM warning light
ABS warning light
Cruise control readiness
Turn signal indicator light, left
Turn signal indicator light, right
Trailer turn signal
Indicator light
Rear fog light indicator light
Tire pressure warning light
Differential locking indicator light
Brake warning light
Fog light indicator light
General warning
Observe warning message on the multi-
purpose display!
High beam indicator light
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Multi-Purpose Display and Instruments
153
Oil pressure too low Immediately stop in a suitable place and switch engine off. Do not continue driving.
Check engine oil level. Add oil if necessary.
Do not continue driving if the warning light comes on even when the oil level is correct. Have the fault
remedied at an authorized Porsche dealer.Oil pressure monitoring
FailureHave the fault remedied at an authorized Porsche dealer.Service in 1864 mls (3000 km) Service indicator
Bring the vehicle in for service no later than after the distance shown has been covered. Please see the
additional information in the “Maintenance
” booklet.
Service now Service indicator
Have your vehicle serviced at an authorized Porsche dealer.Brake pads Have the brake pads replaced at an authorized Porsche dealer.Warning
Brake proportioningStop immediately in a suitable place. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.ABS failure Drive carefully. Have the fault remedied at an authorized Porsche dealer.PSM failure Drive carefully. Have the fault remedied at an authorized Porsche dealer.Warning
Brake fluid levelStop immediately in a suitable place. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.Parking brake Parking brake not released.PSM on Porsche Stability Management was switched on.
Light on
instrument
panel
Warning message on the multi-purpose
displayMeaning/measures
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Driving and Driving Safety
177
Driving Programs for On-Road and
Off-Road DrivingTwo different driving programs with special power-
transmission and running-gear control systems
(such as ABS, off-road ABS and PSM, etc.) are pro-
vided in your Porsche for realising the best possib-
le driving dynamics combined with maximum safe-
ty.
– Low Range off-road driving program
(with reduction)
– High Range on-road driving program
(without reduction)When the driving program is active, the power
transmission and running-gear control systems
are automatically adapted to the requirements for
off-road or on-road driving.
Selecting driving programThe particular driving program can be selected
using the rocker switch A.
The rocker switch A is located in the center con-
sole of the vehicle. It features a multi-step function
and can be operated in both directions.
Note on operation
The number of differential locks that can be enga-
ged in Low Range depends on the equipment of
your vehicle.
Prerequisites for manual settings
Vehicles with manual transmission
fStop the vehicle.
fApply the brake.
fPut the gearshift lever in neutral.
Caution!
Risk of engine damage (overrevving). In the
Low Range program, the gear-shifting points
are shifted towards lower engine-speed ran-
ges.
fShift early to prevent overrevving the engine.
Vehicles with Tiptronic S
fWhen selecting the off-road driving program:
Reduce speed to below 9.3 mph (15 km / h) or
stop vehicle.
fWhen selecting the on-road driving program:
Reduce speed to below 19 mph (30 km / h) or
stop vehicle.
fMove Tiptronic selector lever to position N.
Danger!
Risk of accident, resulting in serious perso-
nal injury or death due to uncontrolled vehic-
le movement. The Tiptronic selector lever is
blocked during the shifting procedure. Shif-
ting when driving uphill can cause the vehicle
to stand still or even roll backwards, if the
shifting procedure has not yet been comple-
ted. When driving downhill, the vehicle can
accelerate unintentionally while shifting.
fIncreased brake readiness is required.
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Driving and Driving Safety
181
Power-Transmission and Running-Gear Control SystemsA complex interconnection of all control systems acting in power transmission and in the running gear has been realized 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
PSM
Porsche Stability Management– Stability management system
– Anti-lock brake system (ABS)
– Brake system prefilling
– Brake booster
– 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
PDCC
Porsche Dynamic Chassis Control– Active chassis control system to stabilize roll tendency of vehicle body when driving
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Driving and Driving Safety
183
Porsche Stability Management (PSM)PSM is an active control system for stabilization of
the vehicle during extreme driving maneuvers. It
operates together with the Porsche Traction
Management (PTM) system.
PSM makes use of both the ABD and TCS
systems, as well as the known functions of the
anti-lock brake system (ABS) and engine drag
torque control system (MSR).
Warning!
In spite of the advantages of PSM, it is still the
driver’s responsibility to adapt her/his driving style
and maneuvers in line with road and weather
conditions, as well as the traffic situation.
The increased safety that is provided should not
induce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with PSM.
Risks of accident due to inappropriate speed
cannot be reduced by PSM.Advantages of PSM
– Best possible traction and lane-holding ability
in all driving situations – even on road surfaces
with varying friction.
– The system compensates for undesired vehi-
cle reactions (load-alteration effect) when the
driver releases the accelerator pedal or brakes
on bends. This compensation functions up to
the maximum lateral acceleration.
– PSM actively stabilizes the vehicle as required
during dynamic driving maneuvers (e.g. rapid
steering movements, during lane changes or
on alternating bends).
– Improved braking stability on corners and on
different or varying road surfaces.
– Improved brake functioning and reduced
stopping distance in the event of emergency
braking.Readiness for operation
PSM is switched on automatically every time you
start the engine.
Function
Sensors at the wheels, brakes, steering system
and engine continuously measure:
– Driving speed
– Direction of travel (steering angle)
– Lateral acceleration
– Longitudinal acceleration
– Rate of turn about the vertical axis
PSM uses these values to determine the direction
of travel desired by the driver.
PSM intervenes and corrects the course if the
actual direction of motion deviates from the
desired course (steering-wheel position):
It brakes individual wheels as needed. If neces-
sary, PSM additionally influences the engine power
or the gear-changing characteristic of the
Tiptronic in order to stabilize the vehicle.
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186
Driving and Driving Safety Collapsible spare wheel
fNever switch the PSM off when driving with a
collapsible spare wheel.
To w i n g
fFor information on towing:
Please see the chapter “TOWING” on
Page 342.
Tip on driving
When PSM is switched off, wheel-specific brake
interventions and the traction control system
(TCS) are also inactive.
The automatic brake differential (ABD) remains on.
Switching PSM back onfPress PSM OFF button A.
PSM is switched on after a short delay.
The light-emitting diode in the button and the
multi-functional PSM light on the instrument
panel go out. A message is shown on the multi-
purpose display of the instrument panel.
ABS
(Anti-lock Brake System)
Warning!
In spite of the advantages of ABS, it is still the
driver’s responsibility to adapt her/his driving style
and maneuvers in line with road and weather
conditions, as well as the traffic situation.
The increased safety that is provided should not
induce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with ABS.
Risks of accident due to inappropriate speed can-
not be reduced by ABS.
ABS ensures:
–Full steering control
The vehicle remains steerable
–Good driving stability
No skidding due to locked wheels
–Optimum braking distance
Shorter stopping distances in most cases
–Lock prevention
No flat spots on the tiresFunction
The decisive advantage of ABS is in the driving
stability and maneuvrability of the vehicle in
hazardous situations.
ABS prevents locking of the wheels during full
braking, on almost all road surfaces, until shortly
before the vehicle stops.
The ABS begins to control the braking process as
soon as a wheel shows a tendency to lock.
This controlled braking process is comparable to
extremely rapid cadence braking.
The pulsating brake pedal and a “rattling noise”
warn the driver to adapt her/his driving speed to
the road conditions.
fIf full braking should be necessary, press the
brake pedal all the way down throughout the
entire braking procedure, regardless of the
pulsating pedal. Do not ease up on pressure
applied to the pedal.
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Driving and Driving Safety
187
Warning light
If the ABS warning lights light up in the instrument
panel and on the multi-purpose display of the
instrument panel while the engine is running, the
ABS has switched off because of a fault.
In this event, the braking system will operate with-
out lock prevention,as in cars without ABS.
fAdapt your driving style to the changed
braking behavior.
fThe ABS must be checked immediately at an
authorized Porsche dealer. This is necessary
in order to prevent the occurrence of further
faults whose effects cannot be defined.
The ABS control unit is adjusted for the approved
tire dimensions.
The use of tires with non-approved dimensions can
lead to different wheel speeds, causing the ABS to
switch off.
Off-road ABS
(ABS in Low Range program)
When Low Range is active, an ABS specially
matched to off-road driving is activated automati-
cally.In the event of braking on loose ground, the per-
missible slip values for ABS braking are increased
so that the off-road braking distance is reduced
(wheels dig into the surface).
If the driver needs to steer, this off-road driving
program is automatically switched off to maintain
steerability.
Hillholder -
moving-off assistant on vehicles with
Tiptronic SIn Tiptronic selector lever positions D and M, the
hillholder function makes it easier to move off
from a standstill on an upward slope when the
engine is running. The driver does not have to
apply the brake.
The hillholder thus makes moving off on slopes
easier.
Danger!
Risk of accident, resulting in serious perso-
nal injury or death.
The vehicle can roll backwards if the Hillhol-
der is switched off.
fAlways apply the footbrake on slopes.Hillholder is not active:
– In Tiptronic selector lever positions N and R
– In the limp-home mode and
– If not all of the wheels are touching the ground
(on difficult terrain, for example).
Warning!
In spite of the advantages of the hillholder func-
tion, it is still the driver’s responsibility to adapt
her/his driving style and maneuvers in line with
situational conditions.
The increased safety that is provided should not
induce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with the hillholder function.
Driving at the limits should be avoided, e.g., on icy
slopes or on slippery surfaces. In this and similar
cases, the support of the hillholder function is not
guaranteed.
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196
Driving and Driving Safety
Driving systems for off-road drivingSpecially adapted driving programs or power-
transmission and running-gear control systems
are available for off-road driving:
– Off-road program Low Range
–Off-road PSM
–Off-road ABS
– Center differential lock
– Rear differential lock
fPlease see the chapter “POWER-TRANSMISSI-
ON AND RUNNING-GEAR CONTROL SYSTEMS”
on Page 181.Before driving offTires
fCheck tread depth and tire pressure.
fCheck for damage and remove any foreign
objects (e.g. stones) from the tread.
fReplace missing valve caps.
Rims
fReplace dented or damaged rims before
driving off road.
Vehicles with SportDesign package
Caution!
Risk of damage. On vehicles with Sport-
Design package, front, rear, and side
member trim are painted. Off-road driving
can seriously damage these trim parts.
fWhen driving off-road, make sure these parts
are not damaged.
fMake sure there is sufficient clearance
between obstacles and the underside of the
vehicle.
fAvoid driving through water.
fDo not use side member trims or rear wheel spoilers as a running board.
After driving off roadOff-road driving places a greater burden on the
vehicle than does normal driving on roads.
We recommend inspecting the vehicle after off-
road driving. Potential damage poses an accident
risk and impairs driving comfort. Damage on the
car is recognized in good time if the car is
checked.
Caution!
Car damage poses an accident risk for the
vehicle occupants and other road users.
fIn cases of doubt, have your vehicle checked
by your authorized Porsche dealer.
fExamine tires for signs of damage such as
cuts, tears, bulges or foreign objects stuck in
the tread.
Replace a damaged tire if necessary.
fHave any damage to your vehicle repaired by an authorized Porsche dealer without delay.
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