2010 PORSCHE 911 CARRERA brakes

Operation, Safety
73
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
interfere 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 author-
ized Porsche dealer.A
- Control switch for door mirror adjustment Swivelling down mirror glass as a parking
aidfPlease see the chapter “SEAT MEMORY” on
Page 33.
– When reverse gear is engaged, the mirror
glass on the passenger’s side swivels down
slightly to show the curb area. Preconditions
– Vehicle must be equipped with seat memory.
– Set the control switch A to “passenger’s side”.
– Reverse gear must be engaged.
Returning mirror glass to its original position
fDrive forwards with a speed of over 4 mph
(6 km/h) or
fSet the control switch A to “driver’s side”.

172
Shifting Gears
Selector lever positionsP – Parking lockfEngage parking lock only when vehicle is
stationary.
If selector lever position P is flashing in the
instrument cluster, the parking lock is not
engaged. The vehicle can roll away.
Engage selector lever position P again by
moving the selector lever out of R.
fEngage parking lock after applying the
handbrake and release it before releasing the
handbrake.
The ignition key can be withdrawn only in
selector lever position P.R – Reverse gearfSelect only if car is stationary and the brake is
applied.N – NeutralSelector lever position N must be selected for
towing or in car washes, for example.
fOnly select the desired position for driving off
(D, M or R) when the engine is idling and the
brake pedal is depressed.
D - Automatic selection modeSelect position D for “normal” driving. The gears
are shifted automatically according to the acceler-
ator position and speed.
Depending on the way the vehicle is driven
(economical, comfortable or sporty driving style)
and on the resistance (e.g. uphill), the gear-
changing points are shifted towards higher or
lower engine-speed ranges.
The accelerator position, driving speed, engine
speed, longitudinal and lateral acceleration and
the road profile all have an influence on the gear-
changing characteristic.
Unwanted upward shifts, e.g. before bends, are
prevented by swiftly releasing the accelerator
pedal.
Depending on lateral acceleration, upward
changes on bends are not made until the engine-
speed limit is reached.
Under braking, and depending on the amount of
deceleration, the PDK transmission changes down
earlier.
For subsequent cornering, the right gear is
engaged when pressure is applied to the brakes
before the bend. The bend is taken in the right
gear, and when you accelerate out of the bend you
do not have to change down.With a sporty driving style, downshifts are already
initiated when the brake pedal is touched lightly.
This further enhances a dynamic driving style.
The PDK transmission temporarily changes to the
sportiest gear-changing map, i.e. to the highest
possible gear-changing points, if the accelerator
pedal is pressed quickly. The transmission accord-
ingly shifts down immediately by one or two gears
(temporary change-down).
The transmission no longer selects 7th gear at
high driving speeds.
Sport mode
(“Sport” and “Sport Plus” modes)
“Sport” mode activated:
The PDK transmission switches to a sporty gear-
changing map and shortens the gear shifting
times.
A sporty driving style is recognised more quickly
and the gear-changing speeds are adapted to
driving performance.
Deceleration downshifts are commenced earlier.
Downshifts are already carried out in the case of
slight decelerations, even at higher engine
speeds.

212
Maintenance, Car Care
Brake Fluid LevelfPlease see the chapter “EXERCISE EXTREME
CAUTION WHEN WORKING ON YOUR VEHICLE”
on Page 206.
fUse only new (unused) Original Porsche
brake fluid.
Warning!
Brake fluid is hazardous to your health, and
may be fatal if swallowed.
Brake fluid also attacks paintwork.
fKeep brake fluid out of children’s reach.
fTake care while topping off brake fluid not to
soil the luggage compartment or items of lug-gage.
Example: 911 Carrera, 911 Carrera SChecking the brake fluid levelThe reservoir for the hydraulic braking and clutch
systems is located in the luggage compartment.
1. Open and remove cover flap A.
2. Regularly check the brake-fluid level on the
transparent expansion tank through the
window B.
The fluid level should always lie between the
minimum and maximum marks.A slight decrease in the fluid level due to wear and
automatic readjustment of the disc brakes is
normal.
If, however, the fluid level falls markedly or below
the minimum mark, the braking system may have
developed a leak.
fHave the brake system checked without delay
at an authorized Porsche dealer.

224
Maintenance, Car Care
Car Care Instructions fPlease see the chapter “EXERCISE EXTREME
CAUTION WHEN WORKING ON YOUR VEHICLE”
on Page 206.
Regular and correct care helps to maintain
the value of your car and is also a
precondition for the New Vehicle Warranty
and the Anti Corrosion Warranty.
Your authorized Porsche dealer has specially
developed car-care products from the
Porsche program available either singly or
as complete car-care sets. They will be
pleased to help you select suitable products.
Whether you use Porsche products or other
commercially available cleaning agents first
make sure of their correct application.
A Porsche that is well-cared for can look like new
for years. It all depends on the amount of care the
owner is willing to give the car.
Warning!
Risk of serious personal injury or damage to
the vehicle or property.
Cleaning agents may be hazardous to your
health.
Most chemical cleaners are concentrates
which require dilution. High concentrations
might cause problems ranging from irritation
to serious injury as well as damage to your
vehicle. fKeep cleaning agents out of reach from chil-
dren.
fObserve all caution labels.
fAlways read directions on the container before
using any product. These directions may con-
tain information necessary to avoid personal
injury.
fDo not use fuel, kerosene, naphtha, nail polish
remover or other volatile cleaning fluids. They
may be toxic, flammable or hazardous in other
ways. Only use spot removing fluids in a well
vented area.
fDo not clean the underside of chassis, fend-
ers, wheel covers, etc., without protecting
your hands and arms as you may cut yourself
on sharp-edged metal parts.
Moisture and road salt on brakes may affect brak-
ing efficiency.
fTest the brakes after each vehicle washing.
Decorative film
Caution!
Risk of damage due to separation of the
decorative film when cleaning your vehicle
with high-pressure cleaning equipment or
steam cleaners.
fDo not use high-pressure cleaning equipment or steam cleaners for cleaning decorative film.
High-pressure cleaning units, steam
cleaners
Warning!
High-pressure cleaning units or steam clean-
ers can damage the following components:
–tires,
– logos, emblems,
– painted surfaces,
– alternator,
– ParkAssist sensors.
fPlease observe the operating instructions from
the unit manufacturer.
fWhen cleaning with a flat-jet nozzle or the like,
maintain a minimum distance of 20 inches (50
cm).
fNever use high-pressure cleaning units or
steam cleaners with a round-jet nozzle. A high-
pressure cleaning unit or steam cleaner with
round nozzle will damage your vehicle.
fThe tires are particularly susceptible to dam-
age.
fDo not point the cleaning jet directly at any of the aforementioned components.

Maintenance, Car Care
225
Washing The best method of protecting your car from the
damaging effects of the environment is frequent
washing and the application of a preservative. The
underside of your vehicle should also be thorough-
ly washed for cinders, salt or sanding at winter’s
end.
The longer salt, road dust and industrial dust,
dead insects, bird droppings or substances from
trees (resin, pollen) are allowed to remain on the
bodywork, the more serious is their harmful ef-
fect.
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 surface
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 to the brakes during
a car wash can reduce braking efficiency or
make the brakes pull unevenly which could
increase the danger of an accident, causing
serious personal injuries or death.
fAfter washing the car, test the brakes and
steering and briefly brake the discs dry.
When doing this, take care not to hamper other
road users behind you (traffic conditions per-mitting).
Automatic car washes
fPlease see the chapter “WIPER BLADES” on
Page 223.
Optional add-on parts or parts which project be-
yond the contours of the vehicle may be damaged
by design features (e.g. brushes) of automatic car
washes.The following parts are particularly
susceptible to damage:
– Convertible top (hot wax treatment cannot be
used, as the wax attacks the convertible top
material)
– Windshield wipers (always switch them off to
prevent them wiping unintentionally in intermit-
tent or sensor operation)
– External antennas (always unscrew)
– Roof Transport System (always remove com-
pletely)
– Rear spoiler
– Wheels (the wider the rim and the lower the tire
height, the greater the risk of damage)
– High-gloss wheels (to prevent these from get-
ting scratched, do not clean with the wheel-
cleaning brushes of the car wash).
fPlease consult the operator before using auto-
matic car washes.
fWash and dry by hand all points not reached by
a car wash, such as door and lid seams or
door sills.
Note
Automatic car washes spray water at odd angles
and high pressures, which are not seen in normal
driving. Therefore, water can sometimes find its
way into the passengers compartment during or
shortly after the car wash.

Maintenance, Car Care
229
fAlways apply a fresh coating of suitable pre-
servative to unprotected areas after cleaning
the underside of the body, the transmission,
the engine or carrying out repairs to under-
body, engine or transmission components.
Effective rust-proofing is particularly important
during the cold weather season. If your car is driv-
en frequently in areas where salt has been spread
on the roads, the whole engine compartment
should be cleaned thoroughly after the winter to
prevent salt from causing any lasting damage. A
full under-body wash should also be performed at
the same time.Stainless steel exhaust tailpipesStainless steel exhaust tailpipes can discolor due
to soiling, strong heat, and combustion residues.
The original polish can be achieved again using
commercially available metal polishing paste or
metal polish.Light alloy wheels fPlease see the chapter “WASHING” on
Page 225.
Warning!
Danger of accident resulting in serious per-
sonal injury or death if cleaning agents (e.g.
wheel cleaning agents) come into contact
with the brake discs.The resulting film on the brake discs can im-
pair braking performance.
fMake sure that no cleaning agent comes into
contact with the brake discs.
fIf cleaning agent has come into contact with
the brake discs, thoroughly clean the brake
discs with a strong jet of water.
fPaying attention to any road users behind you,
dry the brake discs by applying the brakes at
short intervals.
Metal particles (such as brass or copper in brake
dust) must not remain too long on alloy wheels.
Contact corrosion can cause pitting.
Cleaners with an oxide-removing effect or the
wrong pH value, as are commonly used for other
metals, as well as mechanical tools and products,
will damage the oxide layer and are therefore
unsuitable.
fUse only cleaners for alloy wheels
(pH value 9.5). Products with the wrong
pH value can destroy the protective layer
on the wheels.
We recommend Porsche cleaner for alloy rims.
fIf possible, wash the wheels every two weeks
with a sponge or washing brush. If the wheels
are exposed to road salt, grit or industrial dust,
weekly cleaning is necessary.
Door, roof, lid and window seals
Caution!
The lubricant coating on the inner door
seals, convertible top and hardtop seals may
be damaged by unsuitable cleaning and care
agents.
fDo not use any chemical cleaning agents or
solvents.
fDo not use any preservative agents.
fWash dirt (e.g. abrasion, dust, road salt and
grit) from all seals regularly using warm soapy
water.
fIf there is a risk of frost, protect the outer door
seals and lid seals against freezing into place
with a suitable care product.Headlights, lights, interior and exterior
plastic parts, adhesive filmsUse only clean water and a little dishwashing
detergent to clean light lenses, plastic headlight
lenses, plastic parts and surfaces.
Do not clean when dry.
Use a soft sponge or a soft, lint-free cloth. Gently
wipe the surface without applying too much
pressure.
An interior window cleaner can also be used to
clean plastic surfaces (always read the cleaning
instructions on the container). We recommend
Porsche interior window cleaner.

Practical Tips, Emergency Service
235
Tires/Wheels The original equipment tires and wheel rims on
your Porsche comply with all applicable Federal
Motor Vehicle Safety Standards.
For your safety remember the following:
– Wheel rims and wheel bolts are matched to fit
your Porsche.
– If you intend to use other than original equip-
ment wheels, be sure that they conform to
Porsche specifications for your model.
Only tires with the same make and with the
same specification code (e.g. “N0”, “N1”...)
can be mounted.
– The use of wheel rims and wheel bolts that do
not meet specifications of the original factory
installed equipment will affect the safe opera-
tion of your vehicle.
– Before you plan on exchanging wheels, or
snow tires already mounted on the wheel rims,
consult your authorized Porsche dealer. Your
dealer has the technical information necessary
to advise you which wheel rims and wheel bolts
are compatible with the original factory instal-
lations.
Danger!
Risk of loss of control and serious personal
injury or death.
fIf while driving, your vehicle experiences a sud-
den vibration or ride disturbance, and/or you
suspect that possible damage to your tires or
vehicle has occurred, you should immediately
reduce your speed without excessive use of
the brakes.
fStop the vehicle as soon as possible, and in-
spect the tires.
If you cannot determine the cause for the dis-
turbance, have your vehicle towed to the near-
est Porsche or tire dealer to have your vehicle
or tire(s) inspected.
fContinuing to operate the vehicle without cor-
rection could result in a loss of control and serious personal injury.
ExampleUniform Tire Quality GradingQuality grades can be found where applicable on
the tire sidewall between tread shoulder and max-
imum section width.
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades.
Tr e a d w e a r
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specific govern-
ment test course.
For example, a tire graded 150 would wear one

Index
301
AABS (antilock brake system) .......................... 61
Warning light ........................................ 62
Adaptive sports seat..................................... 31
Adjusting Headlights.................................... 278
Advanced Airbag........................................... 45
Air conditioning compressor ................ 106, 108
Air conditioning system ............................... 106
Air distribution .................................... 106, 108
Air filter ...................................................... 222
Air intake.................................................... 109
Airbag
Advanced ............................................. 45
Cleaning covers .................................. 230
Deactivation device............................... 49
Function ............................................... 45
Maintenance ......................................... 48
Warning light .................................. 48, 56
Airbag Systems ............................................ 44
Alarm system ....................................... 23, 100
Deactivating passenger compartment
monitoring ............................................ 24
Fault indication...................................... 24
Function indication................................ 23
Not active .......................................... 258
Alcantara, cleaning ..................................... 231
Antenna ............................................. 100, 225
Antifreeze .................................................. 207
Antifreeze in coolant................................... 207
Antilock brake system (ABS) .......................... 61
Warning light ........................................ 62
Ashtray ........................................................ 89
Assembly aids for wheel changes................. 249
Audio operation ...................................... 98, 99Auto-button, air conditioning.........................106
Automatic
Air conditioning system........................106
Anti-glare mirrors ..................................28
Car washes ........................................225
Door locking ...................................18, 22
Garage door .........................................78
Headlight adjustment.............................81
Speed control .........................86, 87, 116
Transmission ......................................170
Automatic locking retractor............................53
Automatic speed control..............................116
Indicator light ......................................116
Average consumption ..........................127, 157
Average speed ...................................127, 157BBackrest
Adjustment ...........................................30
Release ................................................30
Battery .......................................................261
Care...................................................262
Charge state.......................................261
Charging ............................................262
Putting vehicle into operation ...............263
Remote control ...................................266
Removing ...........................................264
Replacing ...........................................263
Warning light.......................................124
Winter operation..................................263
Before driving off ........................................ 8, 9
Belts ............................................................41
Cleaning .............................................231
Height adjustment .................................43Tensioner ............................................ 41
Warning light ........................................ 42
Blower adjustment...................................... 109
Blower speed adjustment............................ 107
Brake
Break in ............................................... 10
Pads ................................................... 60
Pedal................................................... 59
Wear ................................................... 60
Brake fluid
Changing ........................................... 213
Checking level .................................... 212
Level ................................................. 212
Warning light ...................................... 213
Brake light ................................................. 277
Brake light, additional ................................. 277
Brakes ...................................................... 212
Brake circuit division warning light ....... 213
Brake warning light............................. 125
Fluid .......................................... 212, 290
Fluid warning light............................... 213
Function .............................................. 58
New brake pads or linings ..................... 60
Pads ................................................... 10
Parking brake....................................... 57
Porsche Ceramic Composite Brake
(PCCB) .................................................. 4
Roller brake tester................................ 63
Test stand ........................................... 68
Break in brakes ............................................ 10
Break in hints ............................................... 10
Bulbs, replacing ......................................... 269