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Porsche 911 GT3 (2010 year). Instruction - part 3

f Please see the chapter “KEY-OPERATED

Danger!

AIRBAG DEACTIVATION DEVICE” on Page 46.

Risk of serious personal injury or death due

f Please see the chapter “CHILD RESTRAINT

to the passenger airbag triggering unintenti-

SYSTEMS” on Page 47.

onally.

f Please see the chapter “LATCH SYSTEM

When the ignition key is inserted and an up

CHILD SEAT BRACKET ON THE PASSENGER’S

to one-year old child is seated in the child

SEAT” on Page 51.

restraint system on the passenger’s seat, the

indicator lamp “PASSENGER AIRBAG OFF”

Note

must be on.

f After inserting the ignition key, the

If the “PASSENGER AIRBAG OFF” indicator

PASSENGER AIRBAG OFF warning light lights

lamp does not light up, it could indicate a

up for a few seconds as a bulb check.

fault in the system.

In this case:

PASSENGER AIRBAG OFF indicator lamp

lights up

f

On vehicles with key-operated airbag deactiva-

tion device: Switch to position OFF.

- The passenger's airbag is switched off.

f

On vehicles without key-operated airbag

PASSENGER AIRBAG OFF indicator lamp

PASSENGER AIRBAG OFF indicator lamp

deactivation device: Do not drive.

does not light up

Note on operation

f

Have the fault remedied at your nearest autho-

- The passenger's airbag is active and ready for

rized Porsche dealer.

Although not desired, it can occur in the case of

operation.

heavier children that the passenger airbag remain

active or, in the case of very light adults or young

- If the passenger's seat is not occupied, the

persons, that the passenger airbag is

PASSENGER AIRBAG OFF indicator lamp will

deactivated.

also not light up, even though the passenger's

airbag is switched off.

The condition of the passenger airbag is shown by

the indicator lamp.

If in doubt:

f Please see the chapter “PASSENGER AIRBAG

OFF INDICATOR LAMP DOES NOT LIGHT UP”

on Page 44.

44 Operation, Safety

Note

Airbag maintenance

The key switch for switching off the passenger’s

In order to ensure long-term functioning, the

airbag in combination with the LATCH attachment

airbag system must be inspected by an authorized

bracket are not installed at the factory. They can

Porsche dealer at the intervals recommended in

be retrofitted.

your Maintenance Booklet.

f Please see your authorized Porsche dealer.

Important information

Warning light and warning

If you sell your Porsche, notify the purchaser that

message

the vehicle is equipped with airbags, and refer

them to the chapter, “Airbag Systems“, in the

Faults are indicated by a warning light in the instru-

Owner's Instruction (safety and disposal rules).

ment panel and a message on the on-board

computer.

Further information on the airbag system can be

found on stickers attached to the sun visors.

f Please see the chapter “WARNINGS ON THE

INSTRUMENT PANEL AND THE ON-BOARD

For special recommendations on the use of child

COMPUTER” on Page 148.

restraints:

f In the following cases you should immedi-

f Please see the chapter “CHILD RESTRAINT

ately consult an authorized Porsche

SYSTEMS” on Page 47.

dealer in order to assure the airbag

system is functioning properly:

- If the warning light does not light up when the

ignition key is inserted or

- If the warning light does not go out once the

engine is running or

– If the warning light appears while driving.

Operation, Safety

45

Warning light “PASSENGER AIRBAG OFF”

If the airbag on the passenger’s side is switched

off:

- Warning light “PASSENGER AIRBAG OFF” is

continuously lit when the ignition key is

inserted.

Danger!

Risk of serious personal injury or death from

the passenger’s airbag.

If the “PASSENGER AIRBAG OFF” warning

light is not lit when the ignition key is inserted

and the Airbag OFF switch is switched to the

OFF-Position, this could indicate a fault in the

system.

f Do not install a child restraint system on the

PASSENGER AIRBAG OFF indicator lamp

Key-operated airbag deactivation device

passenger’s seat.

Danger!

f Have the fault remedied immediately.

In case your vehicle is equipped with LATCH, you

Please see your authorized Porsche dealer.

can switch off (OFF) the passenger's airbag

Risk of serious personal injury or death for

instructionly. In the automatic mode (AUTO), the

passenger if passenger’s airbag remains

airbag will be switched on or off automatically

Note

switched off after the child restraint system

depending on the weight on the passenger seat.

is removed.

f Do not install a child restraint system in

f Switch off the passenger’s airbag on the key

the Sports bucket seat.

f Make sure that the key switch is switched to

switch using the vehicle key.

AUTO once the child seat has been removed,

The key switch for switching off the passenger’s

Switch position AUTO - passenger’s airbag is

in order to provide protection to the adult

airbag in combination with the LATCH attachment

active

occupants.

bracket are not installed at the factory. They can

be retrofitted (not on vehicles with Sports bucket

Switch position OFF - passenger’s airbag is

seat).

switched off

f Please see your authorized Porsche dealer.

46 Operation, Safety

instruction label on the restraint and in the instruc-

Danger!

Child Restraint Systems

tion instruction provided with the restraint.

Risk of serious personal injury or death to the

f Do not install a child restraint system in

child.

the Sports bucket seat.

Danger!

The Sports bucket seat cannot be

f

Follow all child restraint instructions and

The use of a child restraint system in the

equipped with the LATCH system.

warnings in this instruction.

passenger’s seat can result in serious

Porsche recommends that all infants and children

personal injury or death to the child from an

-

When using an infant or child restraint system,

be restrained in child restraint systems at all times

airbag deployment.

be sure to follow all manufacturer's instruc-

while the vehicle is in motion in accordance with

To reduce risk of injury from an inflating

tions on installation and use.

applicable laws.

airbag in an accident, Porsche strongly

recommends:

-

Infants and small children should never be held

Use only child restraint systems with the LATCH-

on the lap, nor should they share a safety belt

system recommended by Porsche. These sys-

f Please see the chapter “PASSENGER AIRBAG

with another occupant while the vehicle is in

tems have been tested and adjusted to the interior

OFF INDICATOR LAMP DOES NOT LIGHT UP”

motion.

of your Porsche and the appropriate child weight

on Page 44.

groups. Other systems have not been tested and

-

Children too big for child restraint systems

f Please see the chapter “CHILD RESTRAINT

could entail an increased risk of injury or death.

must use regular safety belts. A shoulder belt

SYSTEMS” on Page 47.

can be used providing it does not cross the

You can obtain child seats that are LATCH compa-

f Do not install a child restraint system in

face or the neck of the child.

tible at your authorized Porsche dealer.

the Sports bucket seat.

-

Choose a child restraint system according to

f Always observe the separate installation

The Sports bucket seat cannot be

the weight of the child.

instructions for your child seat.

equipped with the LATCH system.

-

Child restraint systems that are damaged or

The use of infant or child restraints is required by

have been heavily stressed in an accident must

law in all 50 states of the U.S. and all Canadian

Note

be replaced immediately.

provinces. The child restraint system should be

The key switch for switching off the passenger’s

one that complies with U.S. Federal Motor Vehicle

-

Children could be endangered in a crash if their

airbag and the LATCH attachment bracket are not

Safety Standards and should be secured by a lap

child restraints are not properly secured in the

installed at the factory. They can be retrofitted (not

belt or lap belt portion of a lap-shoulder belt or for

vehicle.

on vehicles with Sports bucket seat).

child seats equipped with the LATCH sytem

-

Do not affix things to child restraint systems or

(Lower Anchorage and Tether for Children, also

f Please see your authorized Porsche dealer.

cover it with other materials.

known as ISOFIX) to the LATCH anchorages.

A statement by the seat manufacturer of compli-

ance with this standard can be found on the

Operation, Safety

47

Using child restraint systems in the

Child restraint system for up to one-year old

Child restraint system for children older than

passenger seat

children

one year

- Make sure that the PASSENGER AIRBAG OFF

Your vehicle is equipped with a weight sensing

f Do not install a child restraint system in

indicator lamp lights up.

system for the passenger's seat in accordance

the Sports bucket seat.

with U.S. Federal Motor Vehicle Safety Standard

- Adjust the passenger's seat as far away from

208. Depending on the weight acting on the

Danger!

the airbag as possible.

passenger's seat, the passenger's airbag will

The use of a child restraint system in the

automatically be switched on or off.

Danger!

passenger seat can result in serious

personal injury or death to the child from an

Risk of serious personal injury or death due

Small adult passengers

airbag deployment.

to the passenger’s airbag triggering uninten-

Make sure that the PASSENGER AIRBAG OFF

To reduce risk of injury from an inflating

tionally.

indicator lamp does not light up.

airbag in an accident, Porsche strongly

When the ignition is on and an up to one-year

recommends:

old child is seated in the child restraint

Danger!

f Please see the chapter “PASSENGER AIRBAG

system on the passenger’s seat the indicator

Risk of serious personal injury or death due

OFF INDICATOR LAMP DOES NOT LIGHT UP”

lamp „PASSENGER AIRBAG OFF“ must be on.

to the passenger’s airbag not triggering.

on Page 44.

If the “PASSENGER AIRBAG OFF” indicator

When the ignition key is inserted and the

f Please see the chapter “CHILD RESTRAINT

lamp does not light up, it could indicate a

small adult passenger is seated on the

SYSTEMS” on Page 47.

fault in the system.

passenger’s seat, the indicator lamp

In this case:

f Do not install a child restraint system in

“PASSENGER AIRBAG OFF” must be off.

the Sports bucket seat.

f On vehicles with key-operated airbag deactiva-

If the “PASSENGER AIRBAG OFF” indicator

The Sports bucket seat cannot be

tion device: Switch to position OFF.

lamp lights up, it could indicate a fault in the

equipped with the LATCH system.

f On vehicles without key-operated airbag

system.

deactivation device: Do not use a child

In this case:

restraint system in the passenger’s seat.

f Do not carry a passenger in the passenger’s

f Have the fault remedied at your nearest autho-

seat.

rized Porsche dealer.

f Have the fault remedied at the nearest autho-

rized Porsche dealer.

Operation, Safety

49

Automatic locking retractor

Danger!

Activating the automatic locking retractor

Risk of serious personal injury or death to the

1.

If a child restraint system must be fastened to

f Do not install a child restraint system in

child, when excessive force is acting on the

the passenger's seat, adjust the passenger's

the Sports bucket seat.

passenger's seat due to the seat belt.

seat as far away from the airbag as possible.

The Sports bucket seat cannot be

In such cases, the passenger's airbag can be

equipped with the LATCH system.

2.

Fasten child seat.

switched on unintentionally.

The safety belt for the passenger is equipped with

3.

Pull the safety belt retractor completely out. At

f

After fastening the child restraint system, do

an automatic locking retractor for securing the

this point the locking mechanism is activated.

not adjust the seat.

child restraint system. When activated, this

4.

Insert the safety belt tongue into the buckle

retractor allows you to securely fasten the child

f

Check the condition of the passenger’s airbag

and make certain that it is properly latched.

restraint system in place so that inadvertent

shown by the indicator lamp in the central

Make no more adjustments to the seat.

movements will not occur.

console.

5.

Allow the safety belt to retract until it is tight on

Before transporting a child on the passenger’s

the child restraint system. You may further

seat:

tighten the belt by pulling on it to allow more of

f Please see the chapter “CHILD RESTRAINT

it to retract.

SYSTEMS” on Page 47.

Make sure that excessive seat belt forces do

not occur by moving the seat with the child

seat installed.

Releasing the safety belt

1. Unbuckle the safety belt latch.

2. Then make certain that the belt has fully

retracted. At this point the automatic locking

feature will be disengaged.

Seek appropriate advice from your authorized

Porsche dealer about the possible installation

of a Porsche child restraint system.

50 Operation, Safety

You can obtain child seats that are LATCH compa-

LATCH System

tible at your authorized Porsche dealer.

Child seat bracket on the passenger’s

f

Always observe the separate installation

seat

instructions for your child seat.

f Do not install a child restraint system in

f

Please see the chapter “CHILD RESTRAINT

the Sports bucket seat.

SYSTEMS” on Page 47.

The Sports bucket seat cannot be

equipped with the LATCH system.

The key switch for switching off the passenger’s

airbag and the LATCH attachment bracket are not

installed at the factory. They can be retrofitted (not

on vehicles with Sports bucket seats).

f Please see your authorized Porsche dealer.

Porsche recommends the use of a Porsche Child

Seat with Lower Anchorage and Tether for

Children system (LATCH).

These systems have been tested and adjusted to

Installing a LATCH child seat system

the interior of your Porsche and the appropriate

child weight groups. Other systems have not been

1. Secure the child seat to retaining lugs A as

tested and could entail an increased risk of injury.

outlined in the instruction instruction for the child

seat.

2. Pull the child seat to check that both fastening

points are engaged correctly.

Note

Make sure that the key switch is switched to AUTO

once the child seat has been removed, in order to

provide protection to the adult occupants.

Operation, Safety

51

Child Restraint Anchorages

f Please see the chapter “AUTOMATIC LOCKING

RETRACTOR” on Page 50.

f Do not install a child restraint system in

the Sports bucket seat.

The Sports bucket seat cannot be

equipped with the LATCH system.

If your child restraint seat requires the use of a

tether strap, you will want to use the anchor point

behind the passenger’s seat under the carpet.

To ensure proper installation, see your authorized

Porsche dealer.

Note

If a child seat with top tether is adapted for use on

the passenger’s seat, the anchor point must be

used for anchoring the top tether.

Warning!

The child restraint anchorage is designed to

withstand only the load imposed by a

correctly fitted child restraint. Under no

circumstances is the anchorage to be used

for adult safety belt or harness. Such use

could result in serious personal injury or

death.

f Do not misuse the child restraint anchorage.

This is not designed to withstand a load

imposed by an adult.

52 Operation, Safety

Clutch Pedal

Setting the parking brake

The clutch pedal must be depressed fully

f

Pull the lever all the way up (arrow).

before the starter will engage.

With the ignition on, the parking brake warning

lights in the instrument panel and on-board

computer will come on if the lever is even

Warning!

slightly raised. A firm pull upward is required to

Risk of an accident, resulting in serious

properly engage the parking brake.

personal injury or death.

If the brake is not fully set, the vehicle may roll

f Always check the movement of the clutch

without control.

pedal before driving and make sure that it is

f

Move the gearshift lever to reverse or first

not obstructed by a floor mat or any other

gear.

object.

f

Before exiting the vehicle, make sure that the

f Secure the floor mat to prevent it from sliding

parking brake is fully set and the vehicle is not

into positions that could interfere with the safe

moving at all.

operation of your vehicle.

Your Porsche dealer will be glad to offer you

Danger!

nonskid floor mats of the correct size.

Parking Brake

Risk of serious personal injury or death. A

To avoid damage to the clutch and transmis-

Parking brake force is mechanically transferred to

partially engaged parking brake may allow

sion:

the rear wheels by means of cables.

the vehicle to roll, causing serious personal

f Always depress the clutch pedal fully when

injury or death to any person in its path.

f Use the parking brake only after the vehicle

changing gears.

has come to a full stop.

f Engage the parking brake fully.

f Do not hold the car on a steep grade with the

clutch pedal partially depressed.

Releasing the parking brake

Should the free travel of the clutch pedal suddenly

f Pull the lever slightly up as you depress the

become larger, it could mean a malfunction of the

release button, and then push the lever all the

clutch.

way down.

f See your Porsche dealer for correction.

Operation, Safety

53

Parking brake warning light USA

Brakes

Brake system function

f Make it a habit to check the operation of your

Your Porsche is equipped with a power assisted

Parking brake warning light

brakes before driving.

hydraulic dual circuit brake system with disc

Canada

brakes at the front and rear.

Keep in mind that the braking distance increases

Both circuits function independently. One brake

The warning lights in the instrument panel and on-

very rapidly as the speed increases. At 60 mph or

circuit operates the front and the other operates

board computer will go out after the parking brake

100 km/h, for example, it is not twice but four

the rear.

is fully released.

times longer than 30 mph or 50 km/h. Tire

The warning lights are not an indicator that the

traction is also less effective when the roads are

If one brake circuit has failed, the other will still

parking brake is fully set; it is only intended to be

wet or slippery.

operate. However, you will notice an increased

a warning to release the parking brake before

pedal travel when you apply the brakes.

f Therefore, always maintain a safe distance

driving the car.

Failure of one brake circuit will cause the stopping

from the car in front of you.

distance to increase.

Caution!

Vehicles without Porsche Ceramic Compo-

Warning!

site Brake (PCCB)

A partially engaged brake will overheat the

rear brakes, reduce their effectiveness and

Even though the brake discs consist of alloyed

Risk of an accident, resulting in serious

cause excessive wear.

grey cast iron, they will unavoidably start to

personal injury or death.

corrode if your car is parked for an extended

In the unlikely event of hydraulic failure of

f Release the parking brake fully.

period. The brakes will tend to “rub” as a result.

one brake circuit:

The nature, extent and effects of corrosion

f When parking your car, always set the parking

f Push the brake pedal down firmly and hold it in

depend on the amount of time the vehicle was

brake by pulling all the way up on the lever.

that position.

parked, whether granular or liquid road salt was

A mechanical linkage activates the second

f Move the gearshift lever to reverse or first

spread and whether grease-dissolving agents

circuit, and you will be able to bring the vehicle

gear.

were used in car washes.

to a stop.

If the braking comfort is noticeably impaired, we

f On hills also turn the front wheels towards the

recommend having the brake system checked by

f After bringing your vehicle to a complete stop,

curb.

experts at an authorized Porsche dealer.

avoid driving the vehicle and instead have it

towed to the nearest authorized Porsche

dealer for repair.

54 Operation, Safety

Brake system warning light

Brake pedal

Warning!

You can check the functionality of the brake

To avoid overheating and premature wear of

Warning!

system warning light by switching the ignition to

the brakes:

the “On” position and verifying that the warning

Risk of an accident, resulting in serious

f

Before descending a steep grade, reduce

light illuminates.

personal injury or death.

speed and shift the transmission into a lower

Any obstruction of the brake pedal could

gear to control speed.

Brake warning light USA

increase the stopping distance.

f

Do not “ride the brakes” by resting your foot on

f Always check the movement of the brake pedal

the pedal when not intending to apply brake

Brake warning light Canada

before driving and make sure that it is not

pressure.

obstructed by a floor mat or any other object.

If the warning lights in the instrument panel and on-

f

Do not hold the pedal down too long or too

f Secure the floor mat to prevent it from sliding

often.

board computer go on while driving, the brake

into positions that could interfere with the safe

This could cause the brakes to get hot and not

fluid level may be too low, or (if the brake pedal

operation of your vehicle.

travel has increased) one of the two brake circuits

function properly.

Your Porsche dealer will be glad to offer you

may have failed.

nonskid floor mats of the correct size.

A greater braking pressure will be required,

stopping distances will be longer and the braking

Note

behavior will change, particularly in curves.

In case one of the two brake circuits fails, incre-

With correctly adjusted brakes, and a correctly

ased pedal travel is required to bring your vehicle

working brake system, the pedal travel to the

to a full stop.

point of brake actuation should be 1-3/16 in. to

1-9/16 in. or 30 to 40 mm.

Whenever the brake pedal travel exceeds this

distance, have the brake system checked.

55

Operation, Safety

Brake booster

Brake wear

Brake pads

The brake booster assists braking only when

Your car has excellent brakes, but they are still

Wear on the brake pads and brake discs depends

the engine is running.

subject to wear. The rate at which they wear

to a great extent on the driving style and the condi-

depends on how the brakes are used.

tions of use and therefore cannot be expressed in

When the car is moving while the engine is not

actual miles on the road.

running, or if the brake booster is defective, more

f Have the brake system inspected at the

pressure on the brake pedal is required to bring

intervals recommended in your Maintenance

The high-performance brake system is designed

the car to a stop.

Booklet.

for optimal braking effect at all speeds and tempe-

If this happens, ABS and PSM will also not

ratures.

operate.

Brake system warning light

Certain speeds, braking forces and ambient

conditions (such as temperature and humidity)

Moisture or road salt on brakes affects braking.

You can check the functionality of the brake

therefore might cause “brake noises”. This also

system warning light by switching the ignition to

Brakes will dry after a few cautious brake applica-

applies after completion of the breaking-in period

the “On” position and verifying that the warning

tions.

required for the new brake components.

light illuminates.

Warning!

New brake pads or linings

Warning light USA

Risk of an accident, resulting in serious

New brake pads and brake discs have to be

personal injury or death.

“broken in”, and therefore only attain optimal

Warning light Canada

friction when the car has covered several hundred

Driving through water may reduce the

miles or km.

traction.

If the warning lights in the instrument panel and on-

The slightly reduced braking ability must be

Moisture on brakes from road water, car

board computer stay on when the engine is

compensated for by pressing the brake pedal

wash, or coating of road salt may affect

running or come on while driving, the brake pads

harder. This also applies whenever the brake pads

braking efficiency.

are worn excessively.

and brake discs are replaced.

f Cautiously apply brakes to test brakes after

f Do not continue to operate the vehicle.

exposure to road water, etc.

Have your authorized Porsche dealer inspect

or replace the brake pads.

56 Operation, Safety

Warning!

Operation of the ABS system

ABS Brake System

(Antilock Brake System)

The increased control that is provided should

A wheel speed sensor is mounted to each of the

not induce you to take greater risks with your

four wheels. If wheel lock-up of either of the front

The ABS system represents a major contribution

safety. The limits dictated by the laws of

wheels or the rear wheels is sensed during

to the enhancement of active safety in your

physics cannot be overcome, even with ABS.

braking, the brake pressure is adjusted automati-

vehicle. This system prevents the wheels from

The risk of accidents due to inappropriate

cally until the wheel no longer slips.

locking in a panic stop on almost all road

speed cannot be reduced, even by the ABS.

surfaces.

The driver bears the responsibility for all

If braking forces approach the wheel lock-up point

driving maneuvers.

for all wheels (panic braking) the ABS system will

With the ABS system in your vehicle, the

intervene to provide a rapid rythmic braking. The

f Adapt your driving style to the prevailing road

following areas are enhanced:

proper operation of ABS is perceived by the driver

and weather conditions.

as a pulsating brake pedal in conjunction with

Steering, vehicle remains steerable under all

f Obey all traffic laws.

audible noise and perhaps some vibration.

braking forces when ABS is engaged.

Other vehicles not equipped with the ABS

f If you experience these sensations while

Good directional control, no swerving caused

system may not be able to maintain control,

driving or a road surface with questionable

by locking of wheels under braking conditions.

especially on wet or poor road surfaces and

traction, reduce vehicle speed appropriate for

thus may be more likely to impact you from

the prevailing road conditions.

Shorter stopping distance, stopping distances

behind.

are usually reduced because controlled braking is

f If full braking should be necessary, press the

maximized.

f To minimize that risk, use your ABS system to

brake pedal all the way down throughout the

increase your ability to maneuver to avoid

entire braking procedure, regardless of the

Prevention of wheel lock up, no brake-induced

dangerous situations and not merely to try to

pulsating pedal. Do not ease up on pressure

sliding and thus no localized tire wear from

stop in the shortest distance possible.

applied to the pedal.

emergency braking.

The functional readiness of all the main electrical

The crucial advantage of the ABS system over a

components of the ABS is checked by an

conventional brake system is in the area of

electronic monitoring system both before and

maintaining directional control and maneuverabi-

while you drive.

lity of the car in emergency situations.

Operation, Safety

57

Warning!

Warning light USA

Risk of an accident, resulting in serious

personal injury or death.

Warning light Canada

The control unit of the ABS brake system is

set for standard tire size. If non-standard

When the ignition is switched on the ABS warning

tires are installed, the control unit may misin-

light will light up while the system is electronically

terpret the speed of the vehicle, because of

interrogated and goes out when the engine is

the variant data it receives from the sensors

started if the check is not yet complete.

on the axles.

If the ABS warning lamp fails to go out, this

f Use only tire makes and types tested by

indicates that ABS has been deactivated due to a

fault. If the warning lights in the instrument panel

Porsche.

and on-board computer light up while you are

driving, this indicates that a fault has occurred. In

both cases, normal braking, as in vehicles without

ABS, is still retained.

The ABS system should, however, be examined at

an authorized Porsche dealer immediately to

prevent the occurrence of further faults.

f If the ABS system becomes inoperative, take

your vehicle to your authorized Porsche dealer

immediately.

58 Operation, Safety

PSM uses these values to determine the direction

Advantages of PSM

Porsche Stability Management

of travel indicated by the driver.

(PSM)

PSM intervenes and helps to correct the course if

-

Improved traction and lane-holding ability in all

the actual direction of motion deviates from the

driving situations - even on road surfaces with

PSM is an active control system for stabilization of

chosen course (steering-wheel position):

varying friction.

the vehicle during extreme driving maneuvers.

It brakes individual wheels as needed. In addition,

-

The system compensates for undesired lateral

the engine power may be manipulated in order to

Warning!

vehicle reactions when the driver releases the

stabilize the vehicle.

accelerator pedal or brakes when cornering.

Risk of an accident, resulting in serious

The events below inform the driver of PSM control

This compensation functions up to the

personal injury or death.

operations and warn him/her to adapt his/her

maximum lateral acceleration.

The increased control that is provided should

driving style to the road conditions:

not induce you to take greater risks with your

-

PSM actively helps stabilize the vehicle as

safety. The limits dictated by the laws of

-

The multifunctional information light on the

required during dynamic driving maneuvers

physics cannot be overcome, even with PSM.

instrument panel flashes.

(e.g. rapid steering movements, during lane

The risk of accidents due to inappropriate

changes or on alternating bends).

-

Hydraulic noises can be heard.

speed cannot be reduced, even by PSM.

-

Improved braking stability in curves and on

The driver bears the responsibility for all

–

The vehicle decelerates and steering-wheel

different or varying road surfaces.

driving maneuvers.

forces are altered as PSM controls the brakes.

f Adapt your driving style to the prevailing road

-

Reduced engine power.

and weather conditions.

-

The brake pedal pulsates and its position is

f Obey all traffic laws.

changed during braking.

In order to achieve full vehicle deceleration,

Sensors at the wheels, brakes, steering system

foot pressure must be increased after the

and engine continuously measure:

brake pedal has begun vibrating.

- Speed

- Direction of travel (steering angle)

- Lateral acceleration

- Rate of turn about the vertical axis

– Longitudinal acceleration

Operation, Safety

59

Readiness for operation

Switching off Stability Control (SC)

PSM is switched on automatically every time you

Precondition:

start the engine.

The light-emitting diode in the SC+TC OFF button

PSM should always be switched on during

must be off.

“normal” driving.

f Press SC OFF button.

However, it may make sense to switch off PSM

Stability Control is switched off after a short

temporarily in exceptional situations, for example:

delay.

The light-emitting diode in the button is lit up.

- On a loose surface or in deep snow,

When the system is switched off, the multi-

- when “rocking the vehicle free” and

functional PSM light on the instrument panel

is lit and the message “SC OFF” appears

- when using snow chains.

continuously on the on-board computer.

An acoustic signal also sounds.

Switching off PSM

- When Stability Control is switched off, sportier

PSM can be switched off in 2 stages:

Traction Control is activated.

- Stage 1 SC OFF:

- Brake control is deactivated.

Danger!

Switch off Stability Control (SC).

- The ABS remains active.

There is a risk of accident due to loss of

- Stage 2 SC+TC OFF:

control of the vehicle. There is no stabilizing

Also switch off Traction Control (TC).

Switching Stability Control (SC) back on

brake control in either switch-off stages

(even when the brakes are used).

f Press SC OFF button.

f PSM should always be switched on during

Stability Control is switched on after a short

“normal” driving. This particularly applies in

delay.

wet conditions.

The light-emitting diode in the button and the

multi-functional PSM light on the instrument

panel go out.

The on-board computer shows a message.

60 Operation, Safety

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