2010 PORSCHE 911 CARRERA tow

Warnings
163
Failure spoiler control Driving stability is impaired.
Adjust your driving style. Reduce speed.
Have the fault remedied at an authorized
Porsche dealer.
Display of
selector lever posi-
tion flashesSelector lever is not engaged Porsche Doppelkupplung:
Selector lever can be between two positions.
Engage the selector lever correctly.
Move selector lever to P Porsche Doppelkupplung:
Move selector lever to position P before with-
drawing key from ignition lock.
Apply brake Porsche Doppelkupplung:
Apply the brake when starting.
Depress clutch pedal Manual transmission:
Depress clutch pedal when starting.
Move selector lever
to position P or NPorsche Doppelkupplung:
The vehicle can be started only in the selector
lever position P or N.
Text display in white:
Transmission
emergency runRestricted gearshift comfort,
failure of reverse gear.
Have the fault remedied at an authorized
Porsche dealer.
Text display in red:
Transmission
emergency runNo selector lever position is displayed on the
instrument cluster.
Vehicle can be driven only until it comes to a
stop.
It is not possible to continue driving. Immedi-
ately stop the vehicle in a suitable place. Have
the vehicle towed to an authorized Porsche
dealer.
Instrument
panelOn-board
computerText display on on-board
computerMeaning/measure

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The ignition key can be withdrawn only in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.

Shifting Gears
175
Depending on driving speed and engine speed,
you can shift up or down at any time.
Gear changes which would exceed the upper or
lower engine speed limit are not executed by the
controller.
There is no automatic upshift at the upper engine
speed limit in selector lever position M. Upshift
suppression can be cancelled by kickdown opera-
tion. If, for example, the engine speed limit is
reached during overtaking and the automatic
upshift does not occur, the transmission in this
case shifts up as a result of kickdown operation.
fSelect an appropriately low gear on upward
and downward slopes.
This will ensure optimum use of engine power
and engine braking.
In order to shift up automatically at the upper
engine speed limit:
fDepress the accelerator pedal beyond the full-
throttle point (kickdown).Failure of the selector lever display on the
instrument cluster
The warning “Transmission emergency run” is
displayed in red on the on-board computer.
–Effect:
No selector lever position is displayed on the
instrument cluster.
Vehicle can be driven only until it comes to a
stop.
Remedy:
It is not possible to continue driving. Immedi-
ately stop the vehicle in a suitable place. Have
the vehicle towed to an authorized Porsche
dealer.
StoppingfFor a brief stop (e.g. at a traffic light), leave the
selector lever in drive position and hold the
vehicle with the brake pedal.
fDo not hold the car on a slope using the
accelerator. Use the brake pedal or the
handbrake instead.
fBefore leaving the vehicle, always apply the
handbrake and move the selector lever to
position P.ParkingfGo easy on the accelerator!
fWhen parking or manoeuvring in a small
space, control the speed by careful use of the
footbrake.Driving in winterIn wintry road conditions it is advisable to take
steep inclines in manual mode. This prevents gear
changes occurring that could cause wheelspin.Tow-starting, towingfPlease see the chapter “TOWING” on
Page 280.

176
Shifting Gears
Reduced driving programIf there is a fault in the transmission
– Depending on priority, the warning “Transmis-
sion emergency run” in white or red lettering or
the warning “Transmission temperature too
high” is displayed on the on-board computer.
Warning “Transmission emergency run” white
– Effects:
Restricted gearshift comfort,
Reverse gear may not function.
Remedy:
Have the fault repaired immediately at an
authorized Porsche dealer.Warning “Transmission emergency run” red
– Effect:
Vehicle can be driven only until it comes to a
stop.
Remedy:
It is not possible to continue driving. Immedi-
ately stop the vehicle in a suitable place. Have
the vehicle towed to an authorized Porsche
dealer.
Warning “Transmission temperature too high”
–Effects:
“Warning jerks” can be felt when driving off and
the engine power may be restricted.
Remedy:
Do not hold the vehicle with the accelerator on
a hill, for example. Hold the vehicle with the
brake. Reduce engine load. If possible, stop
the vehicle in a suitable place. Allow the engine
to run in selector lever position P or N until the
warning disappears.

Mobile Roofs
183
If the convertible top does not lock in the
windshield frame
fOpen convertible top again, start the engine
and close the convertible top again using the
switch.
Assist with the closing process by grasping the
convertible top at the handhold and pulling it
toward the windshield frame (arrow).
fPlease see the chapter “WARNINGS ON THE
INSTRUMENT PANEL AND THE ON-BOARD
COMPUTER” on Page 158.
Messages in on-board computerIf the engine compartment lid is open when acti-
vating the convertible top, a message appears in
the on-board computer. The convertible top can-
not be opened.
fClose engine compartment lid.
fPlease see the chapter “WARNINGS ON THE
INSTRUMENT PANEL AND THE ON-BOARD
COMPUTER” on Page 158.
Emergency operation
of the convertible top fBefore performing emergency operation,
please check:
Was the ignition switched on and was the en-
gine compartment lid closed during operation
of the convertible top with the switch?
Are electrical fuses defective?
Please see the chapter “ELECTRICAL SYS-
TEM” on Page 257.
Warning!
There is danger of injury and damage during
emergency operation.
There is danger of crushing or trapping body
parts at all movable convertible top parts
which could cause serious personal injury.
fTake great care when performing emergency
operation.
fDo not operate the convertible top during and after emergency operation.
Before emergency operation
fRemove the ignition key so that the convertible
top is not operated unintentionally.
fTake screwdriver out of the tool kit.
fFold the rear seat backrests forward.
Rear lid
Convertible top status

190
Mobile Roofs
Example: Mount for 911 Carrera, 911 Carrera SWindstop The windstop is stowed in a protective bag in the
luggage compartment.
The protective bag is fastened with a Velcro strip
in the luggage compartment.
Caution!
Risk of damage to the windstop
fMake sure that the windstop is not damaged
by items of luggage or objects in the luggage
compartment.
fDo not place any objects on the windstop.
fDo not store any sharp-edged objects under
the installed windstop.
fDo not damage the windstop during seat ad-
justment and when folding back the front-seat
backrests.
Adjust seat so that the seat backrest does not
touch the windstop.
fDo not fold up the rear seat backrests with the
windstop installed.
fRemove windstop before fitting a hardtop.
Installing the windstop1. Open zipper of the protective bag.
Take the windstop out of the luggage compart-
ment.

Maintenance, Car Care
219
How Emission Control Works When an automobile engine is running, it uses en-
ergy generated through the combustion of a mix-
ture of air and fuel. Depending on whether a car is
driven fast or slowly or whether the engine is cold
or hot, some of the fuel (hydrocarbons) may not
be burned completely, but may be discharged into
the engine crankcase or exhaust system. Additon-
al hydrocarbons may enter the atmosphere
through evaporation of fuel from the fuel tank.
These hydrocarbons (HC), when released into the
air, contribute to undesirable pollution.
In addition, carbon monoxide (CO) and oxides of
nitrogen (NOx) contribute to engine emissions.
They, too, are formed during the combustion proc-
ess and discharged into the exhaust system.
To reduce these pollutants, your Porsche is
equipped with a precisely calibrated fuel injection
system to assure a finely balanced air/fuel mixture
under all operating conditions.
Oxygen sensor The oxygen sensor, installed in the exhaust pipe
continuously senses the oxygen content of the
exhaust and signals the information to an electron-
ic control unit. The control unit corrects the air/
fuel ratio, so the engine always receives an accu-
rately metered air/fuel mixture. Crankcase ventilation Through crankcase ventilation, undesirable emis-
sions from the engine crankcase are not permit-
ted to reach the outside atmosphere. These emis-
sions are recirculated from the crankcase to the
air intake system. From here the emissions mix
with the intake air and are later burned in the en-
gine. Catalytic converters The catalytic converters are efficient “clean-up”
devices built into the exhaust system of the vehi-
cle. The catalytic converters burn the undesirable
pollutants in the exhaust gas before it is released
into the atmosphere.
The exclusive use of unleaded fuel is critical-
ly important for the life of the catalytic con-
verters. Therefore, only unleaded fuel must
be used.The catalytic converters will be damaged by:
– push or tow starting the vehicle
– misfiring of the engine
– turning off the ignition while the vehicle is mov-
ing or
– driving until the fuel tank is completely empty
– by other unusual operating conditions.
fDo not continue to operate your vehicle under
these conditions, since raw fuel might reach
the catalytic converters. This could result in
overheating of the converters. Federal law pro-
hibits use of leaded fuel in this car.

Maintenance, Car Care
221
Power Steering Power steering is assisted by hydraulic auxiliary
forces.
The hydraulic fluid reservoir is located in the en-
gine compartment.
Note
The flow noise heard at full steering lock is design-
related and does not indicate a defect in the steer-
ing system.
Warning!
Risk of accident resulting in serious personal
injury or death.
When the engine is stopped (e.g. when being
towed) or the hydraulic system fails, there is
no assistance for steering.
Therefore, substantially more force will have
to be exerted in order to steer.
fExercise great care when being towed.
fHave the fault remedied at your nearest author-ized Porsche dealer.
Checking hydraulic fluid fPlease see the chapter “EXERCISE EXTREME
CAUTION WHEN WORKING ON YOUR VEHICLE”
on Page 206.
fOnly use hydraulic fluid authorized by Porsche.
Specification:
Please see the chapter “CAPACITIES” on
Page 290.
Check the fluid level with the engine stopped and
cold (approximately 68 °F/20 °C).
1. Open the engine compartment lid.
2. Open the reservoir cap.
3. Wipe measuring rod.
Close cap and reopen. The fluid level should lie
between the “MIN” and “MAX” marks.
Add hydraulic fluid if necessary.
4. Close cap carefully.
Close engine compartment lid.
Noticeable loss of fluid indicates leakage in the
system.
The cause should be remedied immediately at an
authorized Porsche dealer.