2014 PORSCHE 911 TURBO lock

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.
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182 Driving and Driving Safety
Combined operation of PSM and PTV Plus
In order to ensure optimum stabilization of the vehicle, the center differential lock is influenced when PSM interventions occur on vehicles with PTV Plus.
Combined operation of PSM and PTM
In order to ensure optimum stabilization of the vehicle, torque distribution between the front and rear wheels is adapted and the differential lock is influenced when PSM interventions occur on vehicles with PTV Plus.
In the event of a PTM fault, PSM cannot be switched off.If PSM is switched off, it is switched on again automatically.
Automatic brake differential (ABD)
The ABD system controls the front and rear axles separately. If one wheel of an axle starts to spin, it is braked so that the other wheel on the same axle can be driven.
ABD recognizes different driving states, and it features control strategies adapted to these states. In situations in which little propulsive power is required, such as when the vehicle moves off on a level gravel surface, traction control already becomes active at low engine speeds. If a large amount of propulsive power is required, e.g. when driving off on an uphill slope or for rapid acceleration, the ABD system is adapted accordingly.
Anti-slip control (ASR)
The anti-slip control system prevents the wheels from spinning by adjusting the engine power, thereby ensuring good lane-holding ability and stable handling.
Engine drag torque control (MSR)
In conditions of excessive slip, the engine drag torque control system prevents all driven wheels from locking up when the vehicle is overrunning. This is also the case for downshifts on a slippery road.
Steering torque pulse
The steering torque pulse provides the driver with steering assistance when braking on road surfaces with differing friction values.Additional steering forces also assist the driver during counter steering.
Switching off PSM
fPress button for at least 1 second.PSM is switched off after a short delay.The indicator light on the button and the PSM OFF warning light on the instrument panel light up.The warning “ PSM off” appears on the multi-function display in the instrument panel.
When you brake in the ABS control range , the vehicle is stabilized even when PSM is switched off.
One-sided spinning of the wheels is prevented, even with PSM switched off.
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184 Driving and Driving Safety
HOLD function: Drive-Off
Assistant, Standstill Management
The HOLD function, as an assistance function, assists the driver when stopping and driving off on upward slopes.The vehicle is automatically prevented from rolling back away from the desired direction of travel.When the HOLD function is active, the indicator light on the instrument panel comes on.
The vehicle is stopped and prevented from rolling back away from the desired direction of travel even without pressing the brake.
Information
The HOLD function is not available if the PDK selector lever is in position P and N.
If the PDK selector lever is moved while the HOLD function is active, the HOLD function is deactivated.
If the driver’s safety belt is unfastened and the driver’s door is opened while the HOLD function is active, the electric parking brake is activated automatically.
For information on the electric parking brake:fPlease see the chapter “ELECTRIC PARKING BRAKE” on page 151.
The limits set by the physics of driving cannot be overcome, even with the HOLD function. Responsibility for driving off on upward slopes is still the driver’s, despite the HOLD function.Assistance by the HOLD function is not always guaranteed when stopping and driving off on a slippery surface (e.g. on icy or loose surfaces). In this case, the vehicle can slip.fAlways adjust your driving style to the driving conditions and vehicle load. Use the footbrake if necessary.
If the Drive-Off Assistant is not functioning, the driver cannot be assisted when driving off on hills.fHold the vehicle with the footbrake.
If the vehicle comes to a standstill on a steep uphill gradient without operation of the footbrake by the driver, this may result in a certain roll-back before the vehicle is held by the HOLD function. In this situation, the roll-back can be reduced by pressing the footbrake.fAssist holding of the vehicle by increasing the braking force with the footbrake.
Information
When the HOLD function is active, the brake pedal may feel different and you may hear hydraulic noises.
This behavior is normal for the system. It is not a fault.
ABS Brake System
(Anti-lock Brake System)
In spite of the advantages of ABS, 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 ABS.Risk of accidents due to inappropriate speed cannot be reduced by ABS.
ABS helps provide:
– Full steering control The vehicle remains steerable– Good driving stability No skidding due to locked wheels– Optimum braking distance Shorter stopping distance in most cases– Prevention of wheel locking No flat spots on the tires
Limits of HOLD Function
Drive-Off Assistant Not Working
Vehicle Roll-back
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CAUTIONh
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Driving and Driving Safety 185
Function
The decisive advantage of ABS lies in the driving stability and maneuverability of the vehicle in hazardous situations.
ABS prevents locking of the wheels during full braking, on almost all road surfaces, until just before the vehicle stops.
ABS begins to control the braking process as soon as a wheel shows a tendency to lock.This controlled braking process is comparable with extremely rapid cadence braking.The pulsating brake pedal and a “juddering noise” warn the driver to adapt his driving speed to the road conditions.fIf full braking is necessary, press the brake pedal fully during the whole braking operation, even though the pedal is pulsating. Do not reduce brake pressure.
Warning light USA
Warning light Canada
If the ABS warning light lights up on the instrument panel while the engine is running, the ABS has switched off because of a fault.The warning message “ ABS/PSM failure Adapted driving permitted ” appears on the multi-function display in the instrument panel.
For information on warning messages on the multi- function display: fPlease see the chapter “OVERVIEW OF WARNING AND INFORMATION MESSAGES” on page 129.
In this case, the braking system will operate without lock prevention , as in vehicles without ABS.fAdapt your driving style to the changed braking behavior.The ABS must be checked by your authorized Porsche dealer in order to prevent the occurrence of further faults with unpredictable consequences.Please contact an authorized Porsche dealer.
The ABS control unit is adjusted for the approved tire dimensions.The use of tires with non-approved dimensions can lead to different wheel speeds, causing ABS to switch off.
Porsche Active Suspension
Management (PASM)
The PASM system actively adjusts the shock absorbers. The adjustable damper system selects the appropriate damping level for each wheel according to the driving situation and driving conditions. Driving safety, agility and comfort are optimized.
Two different chassis setups can be selected at the push of a button:–“ Chassis Normal” –“ Chassis Sport”
In Normal mode the vehicle is in a sporty and comfortable setup.Sport mode offers very sporty shock absorber tuning (e.g. for driving on the race circuit).
In addition to manual mode selection, PASM also adjusts shock absorber tuning for either sporty or comfort driving, depending on the driving situation.
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186 Driving and Driving Safety
Selecting the PASM mode
1.Switch on ignition. 2. Press button (repeatedly).
On the button: – No indicator light comes on when “ Chassis Normal selected ” is selected (default setting).– An indicator light comes on when “ Chassis Sport selected ” is selected.
In addition, the selected chassis setup is shown on the multi-function display in the instrument panel for approx. 4 seconds.
Information
The last selected chassis setup is stored in the memory after the ignition is switched off.
Warning message
The system automatically detects PASM faults and displays them on the multi-function display in the instrument panel.
For information on warning messages on the multi-function display:fPlease see the chapter “OVERVIEW OF WARNING AND INFORMATION MESSAGES” on page 129.fAdapt your driving style according to the changed conditions.fContact an authorized Porsche dealer in order to correct the fault.
Porsche Torque Vectoring
(PTV Plus)
Functional Description
Despite the advantages of PTV, it is still the driver’s responsibility to adapt his/her 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 PTV.Risk of accidents due to inappropriate speed cannot be reduced by PTV.
PTV Plus consists of a control system that performs braking interventions based on driving dynamics to achieve variable drive torque distribution on the rear axle and of an electronically controlled rear differential lock.
PTV Plus improves steering response and precision through gentle braking interventions on the inside rear wheel. This braking action cannot be felt by the driver. The vehicle follows the steering angle of the front wheels more precisely. Understeer is largely prevented in the limit range. This increases the lateral acceleration potential and higher cornering speeds are possible.
The electronically controlled rear differential lock continuously monitors the driving condition of the vehicle and distributes the drive torque to the rear axle as required.
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Storage, Luggage Compartment and Roof Transport System 193
Storage
An unsecured or incorrectly positioned load can slip out of place or endanger the vehicle occupants as a result of braking, direction changes or in accidents.fDo not transport items of luggage or objects unsecured in the passenger compartment.fDo not transport any heavy objects in open oddments trays.fAlways keep the covers of the oddments trays closed while driving.fDo not exceed the maximum gross weight and the axle load.This information can be found under “Technical data” in this Owner’s Manual:Please see the chapter “WEIGHTS” on page 288.fAdapt the tire pressure to the load.If you change the tire pressure, you must also update the setting for Tire Pressure Monitoring. Information on tire pressures for partially and fully loaded vehicles can be found under “Technical data” in this Owner’s Manual:Please see the chapter “TIRE PRESSURE FOR COLD TIRES (68 °F/ 20 °C)” on page 287.
Storage options
There are various storage options available, depending on the vehicle equipment:– Drinks holder/cupholder,– in the doors,– in the door sill next to the passenger’s seat,– in the center console, front and rear,– storage net in the passenger’s footwell,
Heavy and bulky objects can damage the storage net.fDo not place any heavy and bulky objects in the storage net.
– behind the rear seat backrests (only with the convertible top closed on the Cabriolet; when opening the convertible top there should not be any objects in the area behind the rear seats – risk of damage),– oddments tray between the seats,– glove box with pen holder,– clothes hooks on back of front seat backrests (depending on vehicle equipment) and on the B-pillars,– enlarged storage space by folding the rear seat backrests forward.
Glove box
An open glove box may cause injury during an accident.fKeep the glove box closed while driving.
On the inside of the glove box lid, there is a clip for holding a pen.
Opening
fPull the latch handle ( arrow) and open the lid.
Locking
fAlways lock the latch handle with the emergency key to secure the contents from unauthorized access.
Unsecured or incorrectly positioned objects or loads
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NOTICE
Open Glove Compartment
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Storage, Luggage Compartment and Roof Transport System 195
2.Press the symbol for the left or right cupholder.The cupholder folds out.3. Close the panel in the middle so that the cupholder does not move while driving.
The cupholders can be pulled out in order to fit larger containers.
Pulling cupholder out
1. Pull out the holder (arrow). 2. Insert a cup/container. 3. Carefully slide the holder inwards to adjust it to the size of the cup/container.
Folding cupholder in
1. Push cupholder drawer in. 2. Open the panel in the middle. 3. Fold the cupholder in and engage it. 4. Close the panel in the middle.
Ashtray
fNever use ashtray for waste paper disposal, as it could pose a fire hazard.
Opening
1. Press briefly on the ashtray lid. The lid opens automatically.
Emptying
2. To unlock, press ashtray insert forwards at the top right until it is felt to disengage.3. Pull the ashtray insert upwards to remove it.fAfter emptying the ashtray insert, replace it and push it downwards until it is felt to engage.
Ashtray Fire RiskWARNINGh
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196 Storage, Luggage Compartment and Roof Transport System
Cigarette Lighter
The tip of the cigarette lighter becomes very hot in use.fDo not leave children in the vehicle unattended.fNever touch the heating element or sides of the lighter.fOnly hold the heated lighter by the knob.
Using the cigarette lighter
The cigarette lighter is ready for use regardless of ignition lock position.fFor information on using charging adapters in the cigarette lighter:Please see the chapter “USING CHARGING ADAPTER FOR 12 VOLT SOCKET/CIGARETTE LIGHTER” on page 197. 1. Press briefly on the ashtray lid. 2. Press the lighter into the receptacle. When the element is red hot, the lighter will jump back to its initial position.
Sockets in the glove box and passenger footwell
Sockets
Electrical accessories can be connected to the 12 V sockets. Depending on the vehicle equipment, these sockets are located in the glove box, the passenger footwell and in the oddments tray in the center console.fFor information on using charging adapters in 12 volt sockets:Please see the chapter “USING CHARGING ADAPTER FOR 12 VOLT SOCKET/CIGARETTE LIGHTER” on page 197.
Information
The maximum electrical load of a socket is 20 A, but only if no other loads are switched on. Do not exceed 10 A per socket if several loads are operating simultaneously.
Cigarette Lighter BurnsWARNINGh
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