2005 PORSCHE 911 CARRERA brake sensor

54
Controls, Instruments Signal tones/function
When reverse gear is selected, the parking assist-
ant confirms that it is switched on by issuing a
short signal tone.
A detected obstacle is signalled by an intermit-
tent tone. The intervals decrease as the obstacle
is approached.
A continuous tone sounds when the distance be-
comes less than one foot. This continuous tone
can stop if the obstacle is approached closer than
one foot.
The radio volume should not be so loud as to
drown out the signal tones. Limits of ultrasonic measurement
The parking assistant system cannot detect:
– sound-absorbing obstacles (e.g. powder
snow),
– sound-reflecting obstacles (e.g. glass surfac-
es, flat painted surfaces)
– and very thin obstacles.
– Other ultrasound sources (e.g. pneumatic
brakes of other vehicles, jackhammers) can in-
terfere with detection of obstacles. Fault indication
The parking assistant system indicates a fault in
two ways:
– After reverse gear has been selected, the
short signal tone is followed by a continuous
tone of the same pitch:
This indicates that sensors are soiled or cov-
ered with ice.
– After reverse gear has been selected, the
short signal tone is followed by a continuous
tone with a much lower pitch:
This indicates a general system fault. Please
have the fault remedied at an authorized
Porsche dealer.

Controls, Instruments
63
Operation of the ABS systemA wheel speed sensor is mounted to each of the
four wheels. If wheel lock-up of either of the front
wheels or the rear wheels is sensed during brak-
ing, the brake pressure is adjusted automatically
until the wheel no longer slips. The brake pressure
is regulated for each front wheel individually and
for both of the rear wheels together.
On a road surface which is slippery on only one
side, the rear wheel which is braking on the slip-
pery surface determines the brake pressure which
will be applied equally to both rear wheels. This en-
sures that directional stability is maintained. How-
ever, if braking forces approach the wheel lock-up
point for all wheels (panic braking) the ABS system
will intervene to provide a rapid rythmic braking.
The proper operation of ABS is perceived by the
driver as a pulsating brake pedal in conjunction
with audible noise and perhaps some vibration.
fIf you experience these sensations while driv-
ing or a road surface with questionable trac-
tion, reduce vehicle speed appropriate for the
prevailing road conditions.
The functional readiness of all the main electrical
components of the ABS is checked by an
electronic monitoring system both before and
while you drive. When the ignition is switched on the ABS warning
light will light up while the system is electronically
interrogated and goes out when the engine is
started if the check is not yet complete.
If the ABS warning lamp fails to go out, this indi-
cates that ABS has been deactivated due to a
fault. If the warning lights in the instrument panel
and on-board computer light up while you are driv-
ing, this indicates that a fault has occurred. In both
cases, normal braking, as in vehicles without ABS,
is still retained.
The ABS system should, however, be examined at
an authorized Porsche dealer immediately to pre-
vent the occurrence of further faults.
fIf the ABS system becomes inoperative, take
your vehicle to your authorized Porsche dealer
immediately.
Warning!
The control unit of the ABS brake system is
set for standard tire size. If non-standard
tires are installed, the control unit may mis-
interpret the speed of the vehicle, because of
the variant data it receives from the sensors
on the axles.
fUse only tire makes and types tested by Porsche.
Warning light USA
Warning light Canada

Controls, Instruments
65
Porsche Stability Management
(PSM)PSM is an active control system for stabilization of
the vehicle during extreme driving manoeuvres.
Warning!
The increased control that is provided should
not induce you to take greater risks with your
safety. The limits dictated by the laws of
physics cannot be overcome, even with PSM.
The risk of accidents due to inappropriate
speed cannot be reduced, even by PSM.
The driver bears the responsibility for all
driving maneuvers.
fAdapt your driving style to the prevailing road
and weather conditions.
fObey all traffic laws. Advantages of PSM – Superior traction and lane-holding ability in all
driving situations – even on road surfaces with
varying friction.
– PSM actively stabilizes the vehicle during dy-
namic driving maneuvers (e.g. rapid steering
movements, during lane changes or on alter-
nating curves).
– Improved braking stability in curves and on dif-
ferent or varying road surfaces.
Readiness for operationPSM is switched on automatically every time you
start the engine.FunctionSensors at the wheels, brakes, steering system
and engine continuously measure:
–Speed
–Steering angle
– Lateral acceleration
– Rate of turn about the vertical axis
– Brake pressure
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. In addition,
the engine power may be manipulated in order to
stabilize the vehicle.The events below inform the driver of PSM control
operations and warn him to adapt his driving style
to the road conditions:
– The multi-functional information light on the
instrument panel lights up.
– Hydraulic noises can be heard.
– The vehicle decelerates and steering-wheel
forces are altered as the PSM controls the
brakes.
– Reduced engine power.
– The brake pedal pulsates and its position is
changed during braking.
In order to achieve full vehicle deceleration,
foot pressure must be increased after begin-
ning the brake pedal pulsing.
f f f

74
Controls, Instruments
Starting Procedures fPlease observe the chapter “IMMOBILIZER” on
Page 19.
fPlease observe the chapter “EMISSION CONT-
ROL SYSTEM” on Page 191.
Warning!
Serious injury may result if you are involved
in a collision without having fastened the
safety belts.
fFasten safety belts before driving away. Before starting the engine fApply the footbrake.
fManual transmission:
Move the gearshift lever into neutral.
The clutch pedal must be depressed fully
before the starter will engage.
fTiptronic:
Move the selector lever to P or N.
Temperature sensors on the engine automatically
provide the correct fuel/air mixture required for
starting.
Therefore, it is not necessary to depress the
accelerator pedal while starting a cold or a
warm engine.
Starting the enginefTurn ignition key to ignition lock position 2.
fAs soon as the engine starts, release the igni-
tion key.
The first operation of the starter is ended automat-
ically when the engine starts.
If the engine does not start, subsequent starter
operations will not be ended automatically.
If the engine fails to start after 10 or 15 seconds
of cranking:
fWait about 10 seconds before engaging the
starter again.
fWhen starting the engine, be ready to drive
immediately.
Drive vehicle at moderate speeds and avoid
engine speeds above 4,200 rpm during the
first 5 minutes.
fDo not let the engine idle to warm up.
Danger!
Engine exhaust fumes have many compo-
nents which you can smell. They also contain
carbon monoxide (CO), which is a colorless
and odorless gas.
Carbon monoxide can cause unconscious-
ness and even death if inhaled.
fNever start or let the engine run in an en-
closed, unventilated area.
It is not recommended to sit in your car for pro-
longed periods with the engine on and the car
not moving.
An unattended vehicle with a running engine
is potentially hazardous.
If warning lights should come on to indicate
improper operation, they would go unno-
ticed.
fNever leave the engine idling unattended.
Danger of fire.
fDo not park or operate the vehicle in areas
where the hot exhaust system may come in
contact with dry grass, brush, fuel spill or oth-
er flammable material.
fIf your car catches on fire for any reason, call
the fire department.
Do not endanger your life by attempting to put out the fire.

76
Controls, Instruments
Instrument Panel USA Models Also refer to the corresponding chapters in
the Owner’s Manual.
1. Engine oil temperature gauge
2. Speedometer with analogue display
3. Turn signal indicator light, left
4. Tachometer
5. High beam indicator light
6. Turn signal indicator light, right
7. ABS warning light
8. Cooling system
Temperature gauge, warning light
9. Fuel
Level gauge, warning light
10.Engine oil pressure gauge
11.Adjustment button for instrument illumination
and trip counter
12.Odometer and daily trip mileage display
13.Automatic speed control indicator light14.Light sensor for instrument illumination
15.Airbag warning light
16.Emission control warning light
(Check Engine)
17.Central warning light
18.On-board computer display
19.Porsche Stability Management
Multifunctional PSM light
20.Brake warning light
21.Safety belt warning light
22.Tiptronic indicator
23.Clock and outside temperature display
24 Adjustment button for clockWhen the ignition is switched on, the warning
lights light up for a lamp check.
Note
Warnings that have been given are stored in the
appropriate control unit memory and can be read
out at an authorized Porsche dealer.
This information can help to warn you about situa-
tions which may be hazardous to you or your car.

78
Controls, Instruments
Instrument Panel Canada Models Also refer to the corresponding chapters in
the Owner’s Manual.
1. Engine oil temperature gauge
2. Speedometer with analogue display
3. Turn signal indicator light, left
4. Tachometer
5. High beam indicator light
6. Turn signal indicator light, right
7. ABS warning light
8. Cooling system
Temperature gauge, warning light
9. Fuel
Level gauge, warning light
10.Engine oil pressure gauge
11.Adjustment button for instrument illumination
and trip counter
12.Odometer and daily trip mileage display
13.Automatic speed control indicator light14.Light sensor for instrument illumination
15.Airbag warning light
16.Emission control warning light
(Check Engine)
17.Central warning light
18.On-board computer display
19.Porsche Stability Management
Multifunctional PSM light
20.Brake warning light
21.Safety belt warning light
22.Tiptronic indicator
23.Clock and outside temperature display
24 Adjustment button for clockWhen the ignition is switched on, the warning
lights light up for a lamp check.
Note
Warnings that have been given are stored in the
appropriate control unit memory and can be read
out at an authorized Porsche dealer.
This information can help to warn you about situa-
tions which may be hazardous to you or your car.

106
Controls, Instruments
Check left/right dipped beam (low
beam)
also applies to:
front side lights, direction indicator,
high beam, fog lights, side indicator
light, brake light, tail light, rear fog
light, reversing light, raised brake
light, side markerThe reported light is faulty. Check bulb.
Have the fault remedied at an authorized
Porsche dealer.
Daytime
driving lights offDaytime driving lights switch off when the engi-
ne is shut off. Switch on lights if necessary.
Headlight beam
adjustment faultyHave the fault remedied at an authorized
Porsche dealer.
Front lid not closed Close luggage compartment lid properly.
Rear lid not closed Close engine compartment lid properly.
Front lid release
faultyLuggage compartment lid release is faulty.
Have the fault remedied at an authorized
Porsche dealer.
Rain sensor faulty Have the fault remedied at an authorized
Porsche dealer.
Top up washer fluid
LIMIT
Cannot be accepted
with vehicle stoppedThe current speed can only b e a c c e p t e d f o r t h e
acoustic warning signal when the vehicle is in
motion.
LIMIT
30Selected speed limit (e.g. 30 mph) for the
acoustic warning signal has been exceeded.
Adjust your speed if necessary.
Instrument
panelOn-board
computerText display on on-board
computerMeaning/measure

280
Index
HHandbrake ................................................... 58
Hardtop ..................................................... 169
Headlights ..........................................114
, 246
Adjusting ....................................257, 258
Cleaning system ................ 115
, 193
, 268
Headlights beam adjustment........................ 114
Heated rear window ...................................... 33
Heater ....................................................... 120
High beam
Indicator light........................................ 83
Lever ................................................. 113
Home mode ............................................... 113
HomeLink................................................... 136
Hoods................................................130, 131
Horn ............................................... 17
, 22, 24
IIgnition lock.................................................. 72
Immobilizer .................................................. 19
Indicator lights.............................................. 76
Instrument.................................................... 76
Illumination ........................................... 80
Lights ................................................ 113
Panel ...........................................70
, 105
Interior lights ................................................ 69
Interior mirror .........................................30, 32
JJumper cables ....................................215
, 242
KKeys ..................................................... 19
, 20
LLATCH System .............................................. 48
Leather care ............................................... 205
License plate light .............................. 113
, 255
Lids ........................................................... 131
Emergency unlocking .......................... 235
Lifting/sliding roof ....................................... 152
Light
Flasher ................................ 83
, 113
, 114
Low beam ................................. 113, 114
Sensor for instrument illumination........... 76
Switch ....................................... 113, 114
Light alloy wheels
Inscription .......................................... 221
Load switch-off ........................................... 233
Loading information .................................... 222
Locking ........................................................ 22
Conditions ............................................ 24
Lowering ...................................................... 52
Luggage carrier .......................................... 269
Luggage compartment ................................ 132
Lid ..................................................... 130
Lid warning light.................................. 130
Light .................................................. 255
Luggage compartment/
engine compartment lid, warning lights ......... 130
Luggage rack ............................................. 175
MMaintenance ...............................................178
Make-up mirror .............................................41
Maximum permitted engine speeds ....... 16
, 144
Mirrors ............................................ 30
, 32, 55
Anti-glare ..............................................32
Multi-functional steering wheel ........................40
NNavigation ..................................................139
Notes on
Car care .............................................198
Maintenance .......................................178
Number plate light.............................. 113
, 255
OOctane rating ..................................... 189
, 190
Off delay ....................................................113
Oil..............................................................181
Checking level.....................................101
Consumption.........................................16
Level checks.......................................181
Level indicator ....................................101
Pressure...............................................88
Temperature .........................................80
On-board computer .......................................90
Basic settings .....................................103
Language versions ..............................103
On-board literature ..........................................2
Orientation light ............................................69
Outside temperatur indicator..........................87