2014 PORSCHE 911 TURBO ESP

Driving and Driving Safety 165
–“ACC not possible Switch on PSM” Adaptive cruise control is not available because PSM was switched off.For information on Porsche Stability Management (PSM) :fPLEASE SEE THE CHAPTER “PORSCHE STABILITY MANAGEMENT (PSM)” on page 181.–“ ACC off” Adaptive cruise control was deactivated.– “ACC not possible Steering lock too large” The steering is turned too far.
General information
“Sport” and “Sport Plus” Mode
Adaptive cruise control regulates your driving more dynamically in “ Sport” and “Sport Plus” mode.
Exceptions for adaptive cruise control
Adaptive cruise control is not available in the following situations:– If the ignition is switched off.– When PSM is off.– If the driver’s door is opened and the driver’s safety belt is not fastened.– When parking or maneuvering in very tight spaces.– When the electric parking brake is activated.– If the PDK selector lever is in position N , R or P. – On upward or downward slopes of more than 15 %.
If one of these exception situations occurs when adaptive cruise control is switched on, adaptive cruise control will be switched off.A message to this effect appears on the multi-function display.
Warning messages
Overtake request when adaptive cruise control is active (ACC active)
If adaptive cruise control detects that braking assistance is required on the part of the driver, a warning signal sounds and the warning message “ Distance Please brake” appears on the multi- function display.
In this case, the braking power of the adaptive cruise control is not sufficient to prevent a collision.fBrake immediately.
Traffic situations in which vehicles cannot be reliably detected
The radar sensor for adaptive cruise control scans a narrow, cone-shaped area in front of your vehicle.Detection can be limited or unreliable, depending on the traffic situation and the size of the vehicle in front. The system may brake too late or unexpectedly.Stationary vehicles are not detected. The system cannot respond to stationary vehicles.fDrive with extreme care.fSlow down if necessary.
Inadequate braking power during automatic braking by the adaptive cruise control.
WARNINGh
14_991_Turbo_21.book Seite 165 Mittwoch, 9. April 2014 2:19 14

Driving and Driving Safety 167
Active Safety – Porsche “Active Safe”
The adaptive cruise control sensor is used for the Porsche “Active Safe” functions.
These include: – Brake system prefilling Prefilling of the brake system if the radar sensor detects that the vehicle is coming critically close to a moving obstacle in order to bridge the air gaps and improve braking response.– Brake Assist Reduction of the activation threshold of the Brake Assist function if the sensor detects that the vehicle is coming critically close to a moving obstacle.The activation threshold of the Brake Assist function is reduced in three stages, depending on how critical the danger situation is.– Target braking If the radar sensor detects that the vehicle is coming critically close to a moving obstacle and, at the same time, braking power is inadequate, brake pressure can be increased in accordance with the situation, through to full braking if required.
Information
All Porsche “Active Safe” functions are active for speeds of more than 20 mph (30 km/h).
Latent warning (visual)
If the vehicle is driving too close to the vehicle in front for a long time, to avoid a collision if the vehicle in front brakes, a latent warning appears on the multi-function display to warn the driver.fStay further back from the vehicle in front if necessary.
Prewarning (acoustic and visual)
If the radar sensor detects that the vehicle is coming critically close to and is very likely to collide with a moving obstacle in front, an acoustic and visual prewarning is issued. This warns the driver and still allows a collision to be prevented if the driver reacts accordingly.
Risk of collision with the vehicle in front.fBrake immediately.
Insufficient distanceWARNINGh
14_991_Turbo_21.book Seite 167 Mittwoch, 9. April 2014 2:19 14

Driving and Driving Safety 169
Static and fluttering
When the line-of-sight link between a transmitter and vehicle is blocked by large buildings or mountains, the radio sound may be accompanied with static or fluttering because of the characteristic of FM.
In a similar effect, a fluttering noise is sometimes heard when driving along a tree-lined road.
This static and fluttering can be reduced by adjusting the tone control for greater bass response until the disturbance has passed.
Multipath
Because of the reflecting characteristics of FM, direct and reflected signals may reach the antenna at the same time (multipath) and cancel each other out. As a vehicle moves through these electronic dead spots, the listener may hear a momentary flutter or loss of reception.
Station swapping
When two FM stations are close to each other, and an electronic dead spot, such as static or multipath area, interrupts the original signal, sometimes the stronger second signal will be selected automatically until the original one returns. This swapping can also occur as you drive away from the selected station and approach another station of a stronger signal.
Compact disk player
To avoid damage to compact disk player and disks.fUse only compact disks labeled as shown, having no dirt, damage or warpage.
fNever attempt to disassemble or oil any part of the player unit. Do not insert any object other than a disk into the slot. Remember there are no user-serviceable parts inside the compact disk player.fDo not allow the disk to sustain any fingerprints, scrapes or stickers on the surfaces. This may cause poor sound quality.Hold the disk only on the edge or center hole.fWhen not in use, take the disk out of the player, put the disk back into its case and store it away from dust, heat, damp and direct sunlight.Leaving the disk on the dashboard in the sun can damage the disk.fIf the disk gets dirty, clean the disk by wiping the surfaces from the center to the outside in a radial direction with a soft cloth. Do not use a conventional record cleaner or anti-static record preservative. Disk cleaners are available in audio stores.
Car Telephone and Aftermarket Alarms
Important legal and safety information regarding the use of cellular telephones
Some jurisdictions may prohibit the use of cellular telephones while driving a vehicle. Check the laws and regulations on the use of cellular telephones in the areas where you drive.
Looking away from the road or turning your attention away from your driving to operate a cell phone will sooner or later cause an accident. fDo not attempt to operate a hand-held cell phone while you are driving. Safety is more important than a phone call.
fLearn to operate the hands-free phone, if it is available, before you start driving. Then make use of the hands-free phone at all times.
It is essential to observe the telephone manufacturer’s instructions before operating the telephone.
Any portable telephone or radio transmitter which is used in a Porsche must be properly installed in accordance with the technical requirements of Porsche.
The transmission power must not exceed 10 W.
The devices must possess a type approval for your vehicle and have an “e” symbol.
If you should require equipment with transmission power values greater than 10 W, please consult your authorized Porsche dealer for this purpose. They are familiar with the technical requirements for installing devices of this kind.
The antennas for all radios and telephones with a transmitting antenna must be externally mounted.
The improper installation of radios or telephones or use of a radio or telephone with a transmitting antenna inside the car may cause the warning lights to come on.
Improper installation of such equipment can create a discharged battery or excessive current draw from added equipment.
NOTICE
Cell Phone UseDANGERh
14_991_Turbo_21.book Seite 169 Mittwoch, 9. April 2014 2:19 14

Driving and Driving Safety 173
Indicator for selector-lever position and engaged gear
When the engine is running, the display shows the selector-lever position and engaged gear.
If the selector lever is between two positions
Effects: – The corresponding selector-lever position in the instrument panel flashes and the warning “ Activate brake” or “Engage gear selector properly ” appears on the multi-function display .
Action required:fOperate the footbrake and engage the selector lever properly.
If the selector lever is inadvertently moved from P or N into a gear (due to a fault or improper use) without pressing the brake, this gear will also flash on the display and no power transmission will occur. fTo drive off, press the brake and move the selector lever from P or N into the required gear again.
Selector-lever position R or D flashes in the instrument panel
No power transmission occurs.
Effects: – The selector lever was engaged without the footbrake being depressed. – The selector lever was moved to R above the permissible limit speed.
Action required:fPress the footbrake and engage the required selector-lever position again from P or N. If reverse gear fails:fPlease see the chapter “LIMP-HOME MODE” on page 178.
Failure of the selector lever display on the instrument panel
Transm. failure Park vehicle safely
The warning “ Transm. failure Park vehicle safely ” is displayed in red on the multi-function display.
Effect: – No selector-lever position is displayed on the instrument panel.Vehicle can be driven only until it comes to a stop.
Action required:fIt is not possible to continue driving. Stop the vehicle immediately in a suitable place. Have the fault corrected at an authorized Porsche dealer. If the vehicle has to be towed:Please see the chapter “TOWING” on page 278.
If there is a fault in the transmission:
The warning “ Transm. fault Poss. no R gear Drive on poss. ” or “Drive temperature too high Reduce load ” appears on the multi-function display .fPlease see the chapter “LIMP-HOME MODE” on page 178.fHave the fault corrected immediately at an authorized Porsche dealer.
14_991_Turbo_21.book Seite 173 Mittwoch, 9. April 2014 2:19 14

Driving and Driving Safety 175
is suppressed because here, the vehicle does not slow down, despite the engine overrun torque and no fuel is consumed in this driving situation due to utilization of the overrun shut-off.
Ending coasting mode/utilizing engine braking effect
fPress the accelerator or brake pedalor Operate a shift paddle or a shift button or Shift gear using the selector lever.
Initiating coasting mode manually
– Driving in selector lever position D or driving in selector lever position M
When coasting mode is suppressed, e.g. in the case of sporty driving, sudden release of the accelerator pedal or excessively low engine temperature, coasting mode can be initiated manually.fTake your foot off the accelerator pedal and shift past the highest possible gear with the shift paddle, one of the shift buttons, or with the selector lever.
Switching coasting mode on and off using the Auto Start Stop button
Switching off
fPress button . The indicator light on the button lights up.Coasting mode is switched off and automatic stopping of the engine is suppressed.
Switching on
fPress button . The indicator light on the button goes out.Coasting mode is switched on and the engine is automatically stopped when the vehicle stops.
“Sport” mode activated
The PDK transmission switches to a sporty gear- changing map and shortens the shifting times.A sporty driving style is recognized more quickly and the gear-changing speeds are adapted to driving performance.
Braking downshifts are initiated earlier. Downshifts occur for small decelerations, even at higher revs.
“Sport Plus” mode activated
In “Sport Plus” mode, the PDK transmission changes to a shift program designed for driving on race circuits. 7th gear is not selected.The gear-changing performance is enhanced significantly again compared with “Sport” mode.fPlease see the chapter ““SPORT” AND “SPORT PLUS” MODE” on page 188.
Driving off with Launch Control
Launch Control allows you to achieve maximum acceleration from standstill.
Launch Control is designed to be used in a controlled environment on closed circuit driving courses where no vehicle cross traffic or pedestrian traffic is present.fUse Launch Control only if conditions permit it to be applied in a safe manner.fDo not use Launch Control if there is a possibility it could endanger other persons.Such a possibility exists if you cannot see that you have a clear road with no possibility of cross traffic in your intended direction of driving.
Information
Stress on components increases dramatically when starting with maximum acceleration in comparison with normal driving off.
Preconditions: – Launch Control should only be used when the engine has reached operating temperature.–“ Sport Plus” mode must be switched on (indicator light on the button comes on and SPORT PLUS appears on the digital speedometer or on the steering wheel).1. Press the brake with your left foot. 2. Quickly press the accelerator down fully (kickdown activated) and hold it.The engine speed will level off at around 5,500 rpm.“ Launch Control activated” is displayed on the multi-function display.Depending on equipment, the “LAUNCH CONTROL” logo appears on the steering wheel.3. Release the brake within a few seconds.
Remaining stationary for a long time with LAUNCH CONTROL can lead to overloading of the transmission.To protect the transmission, the engine power is then reduced and the LAUNCH CONTROL process is cancelled.
In order to drive off, the accelerator must first be fully released.
Endangering Other Road Users
WARNINGh
14_991_Turbo_21.book Seite 175 Mittwoch, 9. April 2014 2:19 14

Driving and Driving Safety 177
Steering wheel with shift paddles
Shifting up with selector lever or right “+” shift paddle
fPress the PDK selector lever forward or pull the right shift paddle on the steering wheel back.
Shifting down with selector lever or left “–” shift paddle
fPull the PDK selector lever or left shift paddle on the steering wheel back.
Shift to N – Neutral using the shift paddles
fPull both shift paddles simultaneously and release them again immediately. Transmission in N – Neutral.
The vehicle rolls with the engine disengaged and at idle speed without engine braking effect. The number in the gear indicator goes out and the selector lever position flashes.
Power transmission can be re-established by pulling one of the shift paddles or by actuating the selector lever.
At low speeds approaching standstill, the brake must be actuated in order to establish power transmission.
Fast gear shifting by repeated operation of the selector lever, shift buttons or shift paddles.
You can shift up or down by the corresponding number of gears by quickly operating the selector lever, the shift buttons or the shift paddles several times in succession.
Gear changes that would exceed the upper or lower engine-speed limit are not executed by the control unit.
There is no automatic upshift at the upper engine- speed limit in selector-lever position M. Upshift suppression can be cancelled by kickdown operation. If, for example, the engine-speed limit is reached during overtaking and an automatic upshift does not occur, the transmission shifts up in this case 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.
Upshift prompt for fuel-economy- optimized driving
The consumption-oriented upshift indicator A in the tachometer at the right beside the digital speed display helps you to develop a fuel-saving driving style.
The upshift indicator lights up – prompting you to shift up to the next-higher gear – depending on the selected gear, engine speed and accelerator pedal position.fChange to the next-higher gear when the upshift indicator lights up.
14_991_Turbo_21.book Seite 177 Mittwoch, 9. April 2014 2:19 14

180 Driving and Driving Safety
Despite the advantages of transmission and chassis control systems, it is still the driver’s responsibility to adapt 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.These systems cannot reduce the risk of accidents due to inappropriate speed.fAdapt your driving style, maneuvers and speed to the road and weather conditions, as well as the traffic situation.
Porsche Traction Management
(PTM)
Porsche Traction Management is an active allwheel control system designed to influence longitudinal and lateral dynamics. It is closely linked with the Porsche Stability Management (PSM) system.
The permanently driven rear axle enhances the vehicle’s sporty features. Drive power is distributed fully variably to the front axle, depending on the driving situation.
In conjunction with PSM, the PTM system ensures perfect distribution of power among all four wheels in every driving situation. This improves traction and driving stability and ensures the same high level of agility and dynamic response.
In spite of the advantages of PTM and four-wheel drive, it is still the driver’s responsibility to adapt 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 PTM or four-wheel drive.Risk of accidents due to inappropriate speed cannot be reduced by PTM or four-wheel drive.
Advantages of PTM
– Clearly perceptible improvement in traction, driving stability and steering ability of the vehicle.– Vehicle is more manageable when driven at its performance limits.– Improved straight-ahead tracking and greater stability.– More sporty vehicle setup while making full use of all the advantages of four-wheel drive.– ASR, ABD and PTV Plus further enhance traction for all wheels.
For information on ASR and ABD:fPlease see the chapter “PORSCHE STABILITY MANAGEMENT (PSM)” on page 181.
For information on current torque distribution between front and rear wheels in the multi-function display:fPlease see the chapter “ALLWHEEL MENU” on page 114.
Driver ResponsibilityWARNINGh
Loss of control over the vehicleWARNINGh
14_991_Turbo_21.book Seite 180 Mittwoch, 9. April 2014 2:19 14

Driving and Driving Safety 181
Porsche Stability Management
(PSM)
PSM is an active control system for stabilization of the vehicle during extreme driving maneuvers.
PSM makes use of both the automatic brake differential (ABD) and anti-slip regulation (ASR) systems, as well as the functions of the anti-lock brake system (ABS) and engine drag torque control system (MSR).
In spite of the advantages of PSM, it is still the driver’s responsibility to adapt 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.Risk of accidents 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 vehicle reactions (Ferraria effect) when the driver releases the accelerator pedal or brakes on bends. This compensation functions up to the maximum lateral acceleration.– PSM actively helps to stabilize the vehicle if necessary during dynamic driving maneuvers (e.g. rapid steering movements, during lane changes, or on alternating bends).
– Improved braking stability on bends and on different or varying road surfaces.– Improved brake function and shorter 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:– Speed– Direction of travel (steering angle)– Lateral acceleration– Axial 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 required. If necessary, PSM also influences the engine power or the gear-changing characteristic of Porsche Doppelkupplung (PDK) 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:– PSM warning light on the instrument panel flashes.– Hydraulic noises can be heard.– The vehicle decelerates and steering-wheel forces are altered as 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 the brake pedal has begun vibrating.
Examples of PSM control operations
– If the “front wheels of the vehicle drift” on a bend, the engine power is reduced and the rear wheel on the inside of the bend is braked if necessary.– If the rear of the vehicle swings out on a bend, the front wheel on the outside of the bend is braked.– Brake system prefilling:The brake system is prepared for possible subsequent emergency braking if the accelerator pedal is released suddenly and quickly. The brake system is prefilled and the brake pads are already applied gently to the brake disks.– Brake booster (Hydraulic Brake Assist):In the event of an emergency braking operation where the pedal force is insufficient, a brake booster provides the braking pressure necessary for maximum deceleration at all 4 wheels.
Loss of control over the vehicleWARNINGh
14_991_Turbo_21.book Seite 181 Mittwoch, 9. April 2014 2:19 14