2014 PORSCHE 911 TURBO brake sensor

Instrument Panel and Multi-Function Display 139
Distance Please brake Insufficient distance from vehicle in front.
ACC/PAS unavailable Service required Adaptive cruise control (ACC): Sensor at the front of the vehicle may be adversely affected by dirt, snow, ice or adverse weather conditions. Adjust your speed and driving style. Have the adaptive cruise control (ACC) or Porsche “Active Safe” fault rectified at an authorized Porsche dealer.
Limit 1/2 exceeded Selected speed limit 1 or 2 exceeded.
Warning light on the coolant temperature gauge flashes
Fault of the engine controlsystem
Have the fault corrected at an authorized Porsche dealer.
Outside temp. display defectiveService required
Have the fault corrected at an authorized Porsche dealer.
Aerodynamic rear spoilerClose sunroof
Close the sunroof.
Close sunroof completely
Decrease speedMove roof cover to end position
Open or close convertible top fully.
Top is opening/closing Message goes out in limit position.
Roof cover in service positionCar not ready
Roof control faultService required Have the fault corrected at an authorized Porsche dealer.
Place down wind deflector Message goes out in limit position.
Light in instrument panel
Warning and information message on the multi-function display Meaning/Action required
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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
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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
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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
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Parking 207
ParkAssist
When the driver is parking and maneuvering the vehicle, ParkAssist indicates the distance between the vehicle and a large obstacle by means of signal tones.fOn vehicles with front and rear sensors:For information on the ParkAssist visual display, please refer also to the section “PARKASSIST” in the operating instructions for the Porsche Communication Systems PCM/CDR.
ParkAssist is activated automatically when reverse gear is selected and the ignition is on.
If the vehicle has front ParkAssist, this also issues an automatic warning when the distance between the vehicle and an obstacle in front is less – than approx. 40 in./100 cm (acoustically) and approx. 32 in./80 cm (visually).
A warning signal sounds when – the distance between the vehicle and an obstacle at the rear is less than approx. 71 in./180 cm.The ParkAssist visual display appears on the central screen of the Porsche communication system.
Front and rear ParkAssist is not activated: – At a speed of more than approx. 9 mph (15 km/h).– When the electric parking brake is activated.– When the ParkAssist has been switched off with button A in the overhead console with the ignition switched on. The indicator light in button A lights up.
Responsibility for parking and for assessing the risk to persons, children, pets, and small objects around the vehicle lies completely with the driver. fMake sure that no persons (especially small children), animals or obstacles are within the maneuvering area. fIf the continuous tone sounds, stop and do not move your vehicle further in that direction.
Ultrasound sensors
Sensors
The ultrasound sensors A in the rear bumper and the sensors A in the front bumper (depending on vehicle equipment) measure the distance to the closest obstacle:– Range behind the vehicle: approx. 71 in. (180 cm)– Range at the side of the vehicle: approx. 24 in. (60 cm)– Range in front of the vehicle: approx. 47 in. (120 cm)
Obstacles cannot be detected in the “blind” sensor area (above and below the sensors, e.g. objects hanging down or close to the ground).
ParkAssist LimitsWARNINGh
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208 Parking
Ultrasound sensors
Maintenance notes
fThe sensors must always be kept free of dust, ice and snow in order to ensure that they are fully functional.fDo not damage sensors by abrasion or scratching.fMaintain sufficient distance when cleaning with high-pressure cleaning equipment.The sensors will be damaged if the pressure is too high.
Signal tones/function
When reverse gear is selected, ParkAssist confirms that it is switched on by issuing a short signal tone .
If the vehicle has front ParkAssist, no signal tone will be issued when reverse gear is selected.Instead, the ParkAssist visual display will appear on the central screen of the Porsche communication system.
A detected obstacle is signaled by an intermittent tone . The intervals decrease as the obstacle is approached.
If the distance drops to less than approx. 12 in. (30 cm), a continuous tone sounds.fSet the radio volume so that the signal tones are not drowned out.
The volume of the signal tones can be changed individually.
For information on changing the signal tone volume:fPlease see the chapter “ADJUSTING PARKASSIST VOLUME” on page 126.
Even when using ParkAssist, the driver is still responsible for taking due care when parking and when assessing obstacles.A continuous tone sounds when there is a risk of collision.fDo not drive rearward any further once a continuous tone sounds.
Limits of ultrasonic measurement
– ParkAssist cannot detect sound-absorbing obstacles (e.g. winter driving, powder snow, clothing made from fabric or fur),– sound-reflecting obstacles (such as glass surfaces and flat painted surfaces),– and very thin obstacles (e.g. thin posts).
Other ultrasound sources (e.g. pneumatic brakes of other vehicles, sweeping machines and jack hammers) can interfere with the detection of obstacles.
Care Required ParkingWARNINGh
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Alarm System and Theft Protection 217
On vehicles with Porsche Entry & Drive
fQuickly press button A in the door handle twice within 2 seconds. The emergency flasher flashes slowly once.The doors are locked, but can be opened from inside.
Information
The interior surveillance system and inclination sensor remain switched off if:– The interior surveillance system and inclination sensor were switched off when you last locked the vehicleandIf button A was pressed and a door or the luggage compartment lid was not opened.
Function indication
On vehicles without Porsche Entry & Drive, the locking condition of the vehicle is indicated by the indicator lights in the central locking button flashing at different frequencies.The indicator lights go out when the vehicle is unlocked.
On vehicles with Porsche Entry & Drive, the locking condition of the vehicle is indicated by the indicator lights in the doors flashing at different frequencies.
Alarm system is activated
– The indicator lights flash quickly twice when the vehicle is being locked, then flash normally.
Alarm system is activated, interior surveillance and inclination sensor are switched off
– The indicator lights flash quickly while you are locking the vehicle, go out for 10 seconds and then flash normally.
Faults in the central locking system and alarm system
The indicator lights come on for 10 seconds, flash at double speed for 20 seconds and then flash normally.
Avoiding false alarms
fIf people or animals are remaining in the locked vehicle or the vehicle is being transported on a train or ship, for example, the interior surveillance system and inclination sensor must be switched off temporarily.fAlways close the sunroof and all door windows.
Immobilizer
There is a transponder (an electronic component), containing a stored code, in each key. Before the ignition is switched on, the ignition lock checks the code.
The immobilizer can be deactivated and the engine started using an authorized ignition key only.
Theft Protection
When leaving the vehicle, always:fClose the windows.fClose the sunroof.fClose the Convertible top (Cabriolet).fActivate the electric parking brake.fRemove the ignition key (or switch ignition off on vehicles with Porsche Entry & Drive).fClose the glove box.fClose all storage compartments.fRemove valuables, vehicle registration documents, telephone and house keys from the vehicle.fClose the luggage compartment lid.fClose the engine compartment lid.fLock the doors.
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232 Maintenance and Car Care
High-pressure cleaning equipment, steam cleaners
Risk of damage as a result of using high-pressure cleaning equipment, steam cleaners or similar.
High-pressure cleaning equipment, steam cleaners or similar can damage the following components:– Convertible top– Tires– Logos, emblems– Painted surfaces– Alternator– Electrical components and plug connections in the engine compartment– ParkAssist sensors– Radar sensor for adaptive cruise control– Reversing camerafAlways read the operating instructions provided by the equipment manufacturer.fAlways cover the lid of the brake fluid reservoir prior to cleaning. Never point the cleaning jet directly at the lid.fWhen cleaning with a flat-jet nozzle or a so-called “dirt blaster”, maintain a minimum distance of 20 in. (50 cm).fNever use high-pressure cleaning equipment or steam cleaners with a round-jet nozzle.A high-pressure cleaning device or steam cleaner fitted with a round nozzle will damage your vehicle. The tires are particularly susceptible to damage.fDo not point the cleaning jet directly at any of the aforementioned components.
Decorative film
Risk of damage due to separation of the decorative film when using high-pressure cleaning equipment, steam cleaners or similar cleaning equipment.fDo not use high-pressure cleaning equipment, steam cleaners, etc. to clean decorative films.
Care of door lock
fTo prevent the door lock from freezing during the cold season, cover the lock barrel with suitable adhesive tape while washing the vehicle.
If the lock still freezes, use an ordinary de-icer. In many cases, a well warmed key can help.fNever use excessive force.
Car washing
The best protection for the vehicle from the damaging effects of the environment is frequent washing and preservation.
The longer road salt, road dust, industrial dust, insect remains, bird excrement, and tree exudations (e.g. resin, pollen), etc. are allowed to remain on the bodywork, the more harmful their effect.
Observe the following points in order to ensure that the vehicle is washed thoroughly without damaging the paintwork: fThe underside of the vehicle should also be thoroughly washed at the end of the gritting season at the latest.fWash your vehicle only at sites provided for this purpose to prevent soot, grease, oil and heavy metals from entering the environment.
fNew 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 slightly more susceptible to scratching and require particularly careful paint care.Dark paints make even the smallest surface blemishes (scratches) more conspicuous than lighter colors.fDo not wash your Porsche in direct sunlight or when its body is hot.fWhen washing by hand, use a car shampoo, plenty of water, and a soft sponge or washing brush.We recommend Porsche car shampoo.fStart washing the vehicle by thoroughly wetting the paintwork and rinsing the heavy dirt off.fAfter washing the vehicle, rinse it thoroughly with water and rub it dry with chamois-leather.Do not use the same chamois for rubbing dry as you use for cleaning the windshield and windows.
Reduced or uneven braking action may be caused by wet brakes.fAfter washing the vehicle, test the brakes and steering and briefly brake the disks dry.When doing so, make sure that vehicles traveling behind you are not affected.
NOTICENOTICE
Wet BrakesWARNINGh
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