Get CONTROLS -> Safety Guide for BMW Z4 2 Door Third Generation (2018-2026)

Safety

CONTROLS

Safety

vehicle, e.g., due to the selected options or

country versions. This also applies to safety

functions and systems. When using these

functions and systems, the applicable laws

and regulations must be observed.

Vehicle features and options

This chapter describes all standard, country-

specific, and optional equipment offered with

the series. It also describes features and func-

tions that are not necessarily available in the

Airbags

1

Front airbag, driver

3

4

Side airbag

Knee airbag

2

Front airbag, front passenger

Front airbags

Side airbag

In the event of a side collision, the side airbag

protects the side of the body in the chest, lap,

and head area.

The front airbag helps protect the driver and

front passenger in the event of a frontal impact

in which the seat belts alone would not provide

adequate protection.

Knee airbag

The knee airbag protects the legs in the event

of a frontal impact.

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Safety

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▷

Dashboard and windshield on the pas-

senger's side must stay clear - do not at-

tach adhesive film or coverings and do not

attach brackets or cables, for instance for

navigation devices or mobile phones.

Protective effect

General information

Airbags are not deployed in every impact sit-

uation, e.g., in less severe accidents.

Do not bond the airbag cover panels with

adhesive, do not cover them or modify

them in any way.

Information on optimum protective

effect of the airbags

▷

Do not use the cover of the front airbag on

the passenger's side as a storage area.

Warning

Keep storage compartments near the air-

bags closed, e.g., glove compartment or

center armrest.

If the seat position is incorrect, the seat

belts are fastened incorrectly or the deploy-

ment area of the airbags is impaired, the

airbag system cannot provide protection as

intended and may cause additional injuries

due to deployment. There is a risk of injury

or danger to life. Follow the information on

achieving the optimum protective effect of the

airbag system.

▷

Do not attach slip covers, seat cushions or

other objects to the front seats that are not

specifically suited for seats with integrated

side airbags.

▷

Do not hang pieces of clothing such as

jackets over the backrests.

Never modify either the individual compo-

nents or the wiring in the airbag system.

This also applies to steering wheel covers,

the dashboard, and the seats.

▷

Keep a distance from the airbags.

Fasten the seat belts correctly.

Always grasp the steering wheel on the

steering wheel rim. Hold your hands at the

3 o'clock and 9 o'clock positions to keep the

risk of injury to your hands or arms as low

as possible when the airbag is deployed.

▷

Do not disassemble the airbag system.

Even when you follow all instructions very

closely, injury from contact with the airbags

cannot be fully ruled out in certain situations.

The ignition and inflation noise may lead

to short-term and, in most cases, temporary

hearing impairment in sensitive occupants.

▷

Adjust seat and steering wheel so that

hands can be crossed over the steering

wheel. Select the settings so that the

shoulder rests against the backrest when

crossing the hands and the upper body

is as far back as possible while still main-

taining a comfortable grip on the steering

wheel.

Vehicle modifications for a person with disabil-

ities may affect the air bag system; contact

BMW Customer Relations for further informa-

tion.

Warnings and information on the airbags are

also found on the sun visors.

▷

Make sure that the front passenger is sit-

ting correctly, i.e., with their feet and legs in

the footwell, not resting on the dashboard.

▷

Make sure that occupants keep their heads

away from the side airbag.

There should be no additional persons, an-

imals or objects between an airbag and a

person.

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Safety

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Operational readiness of the airbag

system

Setting the front seat positions

The power that deploys the driver's/front

passenger airbags depends on the position of

the driver's/front passenger seat.

Safety information

To maintain the accuracy of this function, cali-

brate the electrical front seats as soon as a re-

spective message appears on the control dis-

play.

Warning

Individual components can be hot after de-

ployment of the airbag system. There is a risk

of injury. Do not touch individual components.

Additional information:

Seats, refer to page 108.

Warning

Automatic deactivation of

the front passenger airbags

Improperly executed work can lead to failure,

malfunction or unintentional deployment of

the airbag system. In the case of a malfunc-

tion, the airbag system might not deploy as

intended despite the accident severity. There

is a risk of injury or danger to life. Have the

airbag system checked, repaired, disassem-

bled, and scrapped by an authorized service

center or another qualified service center or

repair shop.

Principle

The system reads if the front passenger seat

is occupied by measuring the human body's

resistance.

The front passenger airbags are activated or

deactivated.

General information

Display in the instrument cluster

Before transporting a child on the front pass-

enger seat, refer to the safety information and

instructions for children on the front passenger

seat, see Children.

When drive-ready state is turned on,

the warning light in the instrument

cluster illuminates briefly, thereby indi-

cating the operational readiness of the entire

airbag system and the seat belt tensioners.

Safety information

Malfunction

Warning

To ensure the front passenger airbag func-

tion, the system must be able to detect

whether a person is sitting in the front pass-

enger seat. The entire seat surface must be

used for this purpose. There is a risk of injury

or danger to life. Make sure that the front

passenger keeps his or her feet in the foot-

well.

▷

Warning light does not illuminate

when drive-ready state is turned on.

▷

The warning light illuminates con-

tinuously.

The airbag system or the seat belt tension-

ers may not be operational. Have the vehicle

checked immediately by an authorized service

center or another qualified service center or

repair shop.

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Safety

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passenger's side are not ac-

tivated.

Fault of the automatic deactivation

system

When transporting older children and adults,

the front passenger airbags may be deacti-

vated in certain seat positions. In this case, the

indicator light for the front passenger airbags

illuminates.

▷

The indicator light does not illuminate

when, for instance, a correctly seated per-

son of sufficient size is detected on the

seat. The airbags on the passenger's side

are activated.

In this case, change the seat position so that

the front passenger airbags are activated and

the indicator light goes out.

Detected child restraint systems

The system generally detects children seated

in a child restraint system, particularly in child

restraint systems required by NHTSA at the

point in time when the vehicle was manufac-

tured. After installing a child restraint system,

make sure that the indicator light for the front

passenger airbags illuminates. This indicates

that the child restraint system has been de-

tected and the front passenger airbags are not

activated.

If it is not possible to establish the desired con-

dition, do not transport the person in the front

passenger seat.

To enable accurate recognition of the occupied

seat surface:

▷

Do not attach covers, cushions, ball mats

or other items to the front passenger seat

unless they are specifically determined to

be safe for use on the front passenger seat.

▷

Do not place any electronic devices on the

front passenger seat if a child restraint sys-

tem is to be installed on it.

Intelligent Safety

▷

Do not place objects under the seat that

can press against the seat from below.

Principle

Intelligent Safety enables central operation of

the driver assistance systems.

No moisture in or on the seat.

Indicator light for the front

passenger airbags

The indicator light for the front-seat passenger

airbag in the headliner indicates the operating

state of the front-seat passenger airbag.

General information

Depending on how the vehicle is equipped,

Intelligent Safety consists of one or more sys-

tems that can help prevent the risk of imminent

collision.

The light indicates whether the airbags are ei-

ther activated or deactivated.

▷

Forward Collision Warning with braking

function, refer to page 174.

After drive-ready state is switched on, the light

shortly illuminates and then indicates whether

the airbags are either activated or deactivated.

▷

Daytime Pedestrian Collision Mitigation, re-

fer to page 177.

▷

Lane departure warning, refer to page 179.

▷

The indicator light illuminates

when a child is properly

Active Blind Spot Detection, refer to

page 182.

seated in a child restraint

system or when the seat is

empty. The airbags on the

▷

Rear-end collision preparation, refer to

page 184.

172

Safety

CONTROLS

Safety information

Settings

The following settings can be selected for In-

telligent Safety systems:

Warning

▷

"ALL ON": all Intelligent Safety systems are

switched on. Basic settings are activated

for the sub-functions, for instance setting

for warning time.

The system cannot serve as a substitute for

the driver’s personal judgment in assessing

the traffic situation. Based on the limits of

the system, it cannot independently react to

all traffic situations. There is a risk of acci-

dent, injury, or property damage. Adjust driv-

ing style to traffic conditions. Watch the sur-

rounding traffic situation closely, be ready to

take over steering and braking at any time,

and actively intervene where appropriate.

▷

"INDIVIDUAL": the Intelligent Safety sys-

tems are switched on according to the indi-

vidual settings.

"Configure INDIVIDUAL": Intelligent Safety

systems can be configured individually. The

individual settings are activated and stored.

As soon as a setting is changed on the

menu, all settings of the menu are acti-

vated.

Warning

▷

"ALL OFF": All Intelligent Safety systems

are switched off.

Indicators and warnings cannot serve as a

substitute for the driver’s personal judgment.

Due to its limits, the system may not issue

warnings or responses, or these may be is-

sued late or in a manner that is not consis-

tent with their normal use. There is a risk of

accident, injury, or property damage. Adjust

driving style to traffic conditions. Watch sur-

rounding traffic closely and actively intervene

where appropriate

Display

Button Status

Button illuminates green: all Intelli-

gent Safety systems are switched

on.

Button illuminates orange: some

Intelligent Safety systems are

switched off or currently unavailable.

Overview

Button does not illuminate: all Intel-

ligent Safety systems are switched

off.

Button in the vehicle

Switching Intelligent Safety systems

on/off

General information

Some Intelligent Safety systems are automati-

cally active after every departure. Some Intelli-

gent Safety systems activate according to the

last setting.

Intelligent Safety

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Safety

CONTROLS

style is detected, warnings and brake interven-

tions occur less frequently.

Operation

Press the button.

The menu for the Intelligent Safety

system is displayed.

Safety information

If all Intelligent Safety systems were switched

off, all systems are now switched on.

Warning

The system cannot serve as a substitute for

the driver’s personal judgment in assessing

the traffic situation. Based on the limits of

the system, it cannot independently react to

all traffic situations. There is a risk of acci-

dent, injury, or property damage. Adjust driv-

ing style to traffic conditions. Watch the sur-

rounding traffic situation closely, be ready to

take over steering and braking at any time,

and actively intervene where appropriate.

"Configure INDIVIDUAL": Configure Intelligent

Safety systems individually if required.

Press the button repeatedly. The fol-

lowing settings are switched between:

▷

"ALL ON"

"INDIVIDUAL"

Some Intelligent Safety systems cannot be in-

dividually switched off.

Press and hold this button.

"ALL OFF": The menu is selected. All

Intelligent Safety systems are switched off.

Warning

Indicators and warnings cannot serve as a

substitute for the driver’s personal judgment.

Due to its limits, the system may not issue

warnings or responses, or these may be is-

sued late or in a manner that is not consis-

tent with their normal use. There is a risk of

accident, injury, or property damage. Adjust

driving style to traffic conditions. Watch sur-

rounding traffic closely and actively intervene

where appropriate

Forward Collision Warning

with braking function

Principle

The Forward Collision Warning with braking

function is a warning function that notifies the

driver of a possible risk of collision and brakes

automatically as necessary. In the event of an

accident, the system helps by reducing impact

speed.

Sensors

The system is controlled by the following sen-

sors:

General information

Sensors detect the traffic situation in their de-

tection range.

▷

Cameras behind the windshield.

With radar sensor: front radar sensor.

Additional information:

The system issues a two-phase warning of

a possible risk of collision with vehicles at

speeds above approx. 3 mph/5 km/h. The tim-

ing of warnings may vary with the current driv-

ing situation.

Sensors of the vehicle, refer to page 35.

The system considers the driver’s vehicle han-

dling when responding. If an active driving

174

Safety

CONTROLS

Switching Forward Collision

Warning on/off

Icon

Measure

Warning light illuminates red: Ad-

vance warning.

Turning on the system automatically

The system is automatically active when the

vehicle is turned on.

Brake and increase distance.

Warning light flashes red and acous-

tic signal sounds: Acute warning.

Turning the system on/off manually

Brake and make an evasive maneu-

ver, if necessary.

Follow instructions for settings, dis-

play, and operation in the Intelligent

Safety chapter.

Prewarning

Additional information:

This prewarning is provided, for instance when

there is impending risk of a collision or the dis-

tance to the vehicle ahead is too small.

Intelligent Safety, refer to page 172.

If a prewarning is provided, respond by braking

as warranted.

Setting the warning time

1. "CAR"

2. "Settings"

Acute warning with brake function

3. "Driver Assistance"

4. "Safety and Warnings"

5. "Forward Collision Mitigation"

6. Select the desired setting:

An acute warning is displayed in case of the

imminent risk of a collision when the vehicle

approaches another object at a high differen-

tial speed.

Actively intervene if an acute warning is given,

e.g., apply brakes. Depending on the driving

situation and the equipment version, the acute

warning may be accompanied by a brief acti-

vation of the braking system.

▷

"Early"

"Medium"

"Late": only acute warnings are dis-

played.

With the warning time setting "Late" the brief

activation of the braking system is omitted.

Warning with brake function

If an acute warning is provided, the system

may also provide assistance such as through

automatic brake intervention when there is risk

of collision.

Display

If there is a risk of collision with a detected

vehicle, a warning light is shown on the instru-

ment cluster and Head-up display as applica-

ble.

Acute warnings may be provided even when

there has been no prewarning.

Brake intervention

The warning prompts the driver to intervene.

When the brake pedal is depressed quickly and

hard, the maximum brake power of the vehicle

is used.

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Safety

CONTROLS

The system may also assist with brake inter-

vention if there is a risk of collision.

Detection range

When the vehicle is traveling at a low speed,

the vehicle may come to a complete stop.

Manual transmission: during a brake interven-

tion up to a complete stop, the engine may be

shut down.

City brake function: the brake intervention oc-

curs to up to approx. 50 mph/80 km/h.

With radar sensor: the brake intervention oc-

curs to up to approx. 155 mph/250 km/h.

The system's detection capability is limited.

Only objects that are detected by the system

are taken into account.

At speeds above approx. 130 mph/210 km/h,

the brake intervention occurs as a brief activa-

tion of the braking system. No automatic delay

occurs.

Thus, a system response might not come or

might come late.

The braking intervention can be interrupted by

stepping on the accelerator pedal with suffi-

cient force or by actively moving the steering

wheel.

The following situations may not be detected,

for instance:

▷

Vehicle driving slowly in front and being ap-

proached at high speed.

System limits

▷

Vehicles that suddenly swerve in front of

you, or strongly decelerating vehicles.

Safety information

▷

Vehicles with unusual rear designs.

Two-wheeled vehicles ahead of you.

Warning

Upper speed limit

If the vehicle speed exceeds approx.

155 mph/250 km/h, the system is deactivated

temporarily. The system is enabled as soon as

the speed drops below this value again.

Because of system limitations, this system

may either not respond, or respond too late,

incorrectly, or without cause. There is a risk

of accident, injury, or property damage. Ac-

tively intervene as warranted. Refer to the in-

formation in this Owner’s Manual regarding

the scope of the system’s operation and limi-

tations.

System limits of the sensors

Additional information:

▷

Cameras, refer to page 35.

Radar sensors, refer to page 36.

Functional limitations

The system may be limited in the following

situations:

176

Safety

CONTROLS

▷

In tight curves.

Safety information

If the driving stability control systems are

limited or deactivated, for instance DSC

OFF.

Warning

The system cannot serve as a substitute for

the driver’s personal judgment in assessing

the traffic situation. Based on the limits of

the system, it cannot independently react to

all traffic situations. There is a risk of acci-

dent, injury, or property damage. Adjust driv-

ing style to traffic conditions. Watch the sur-

rounding traffic situation closely, be ready to

take over steering and braking at any time,

and actively intervene where appropriate.

▷

Up to 10 seconds after the start of the en-

gine via the Start/Stop button.

Also, do not use this system when towing.

Warning sensitivity

The more sensitive the warning settings are,

for example the warning time, the more warn-

ings are displayed. Therefore, there may also

be an excess of unwarranted warnings and re-

sponses.

Warning

Daytime Pedestrian

Collision Mitigation

Indicators and warnings cannot serve as a

substitute for the driver’s personal judgment.

Due to its limits, the system may not issue

warnings or responses, or these may be is-

sued late or in a manner that is not consis-

tent with their normal use. There is a risk of

accident, injury, or property damage. Adjust

driving style to traffic conditions. Watch sur-

rounding traffic closely and actively intervene

where appropriate

Principle

The Daytime Pedestrian Collision Mitigation is

a warning function that notifies the driver of a

possible risk of collision with pedestrians and

cyclists and brakes automatically as neces-

sary. The system issues warnings for speeds

that are common in towns and cities. In the

event of an accident, the system helps by re-

ducing impact speed.

Sensors

The system is controlled by the following sen-

sors:

General information

Sensors detect the traffic situation in their de-

tection range.

▷

Cameras behind the windshield.

With radar sensor: front radar sensor.

The system issues a warning of a possible

risk of collision with pedestrians and cyclists at

speeds above approx. 3 mph/5 km/h.

Additional information:

Sensors of the vehicle, refer to page 35.

177

Safety

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Detection range

Warning with brake function

Display

If there is a risk of collision with a detected

pedestrian or cyclist, a warning light is shown

on the instrument cluster and Head-up display

as applicable.

Icon

Meaning

Warning light illuminates red and

acoustic signal sounds: Risk of immi-

nent collision detected.

The detection range in front of the vehicle is

divided into two areas:

Alternatively, depending on the vehi-

cle equipment, a red warning triangle

illuminates in the instrument cluster.

▷

Central area, arrow 1, directly in front of the

vehicle.

▷

Extended area, arrows 2, to the right and

left of the central area.

Intervene immediately by braking or making an

evasive maneuver.

There is a risk of collision if persons, e.g.,

pedestrians or cyclists, are located within the

central area. A warning is issued about pedes-

trians who are located within the extended

area only if they are moving in the direction of

the central area.

Brake intervention

The warning prompts the driver to intervene.

When the brake pedal is depressed quickly and

hard, the maximum brake power of the vehicle

is used.

Switching Pedestrian Warning

on/off

If there is a risk of collision, the system may

also assist with brake intervention.

When the vehicle is traveling at a low speed,

the vehicle may come to a complete stop.

Turning on the system automatically

The system is automatically active when the

vehicle is turned on.

Manual transmission: during a brake interven-

tion up to a complete stop, the engine may be

shut down.

Turning the system on/off manually

The braking intervention can be interrupted by

stepping on the accelerator pedal with suffi-

cient force or by actively moving the steering

wheel.

Follow instructions for settings, dis-

play, and operation in the Intelligent

Safety chapter.

Additional information:

Intelligent Safety, refer to page 172.

178

Safety

CONTROLS

▷

If the driving stability control systems are

deactivated, for instance DSC OFF.

System limits

Safety information

Up to 10 seconds after the start of the en-

gine via the Start/Stop button.

Also, do not use this system when towing.

Warning

Because of system limitations, this system

may either not respond, or respond too late,

incorrectly, or without cause. There is a risk

of accident, injury, or property damage. Ac-

tively intervene as warranted. Refer to the in-

formation in this Owner’s Manual regarding

the scope of the system’s operation and limi-

tations.

Lane departure warning

Principle

The lane departure warning alerts when the

vehicle is about to run off the road or exit the

lane.

General information

This camera-based system warns starting at a

minimum speed.

Upper speed limit

The system responds to pedestrians and cy-

clists when the vehicle speed is below approx.

50 mph/80 km/h.

The minimum speed is country-specific and is

displayed in the menu for the intelligent Safety

systems.

Detection range

The system's detection capability is limited.

Warnings are issued by means of a steering

wheel vibration.

Thus, a warning might not be issued or be is-

sued late.

The system does not provide a warning if the

turn signal is set in the respective direction be-

fore exiting the lane.

The following situations may not be detected,

for instance:

Depending on the equipment version, if in the

speed range up to 130 mph/210 km/h a lane

boundary is crossed, the system may inter-

vene with a brief active steering intervention

in addition to vibrating. The system thus helps

keep the vehicle in the lane.

▷

Partially hidden persons.

Persons that are not detected as such be-

cause of the viewing angle or contour.

▷

Persons outside of the detection range.

Persons having a body size less than

32 in/80 cm.

Safety information

System limits of the sensors

Additional information:

Warning

The system cannot serve as a substitute

for the driver’s personal judgment in assess-

ing road and traffic situations. There is a

risk of accident. Adjust driving style to traffic

conditions. Watch surrounding traffic closely

and actively intervene where appropriate Do

▷

Cameras, refer to page 35.

Radar sensors, refer to page 36.

Functional limitations

The system may be restricted or not available

in the following situations:

179

Safety

CONTROLS

not jerk the steering wheel in response to a

warning.

Setting Lane Departure Warning

Setting the warning time

1. "CAR"

Warning

2. "Settings"

Indicators and warnings cannot serve as a

substitute for the driver’s personal judgment.

Due to its limits, the system may not issue

warnings or responses, or these may be is-

sued late or in a manner that is not consis-

tent with their normal use. There is a risk of

accident, injury, or property damage. Adjust

driving style to traffic conditions. Watch sur-

rounding traffic closely and actively intervene

where appropriate

3. "Driver Assistance"

4. "Safety and Warnings"

5. "Lane Departure Warning"

6. Select the desired setting:

▷

"Early"

"Medium"

"Reduced": some warnings are sup-

pressed depending on the situation,

for instance when purposely driving over

pathway lines in curves or with dynamic

passing without a turn signal.

Sensors

The system is controlled by cameras behind

the windshield.

▷

"Off": no warnings are issued.

Setting the intensity of the steering

wheel vibration

Additional information:

Sensors of the vehicle, refer to page 35.

1. "CAR"

Functional requirement

2. "Settings"

The camera must detect the lane boundaries

for the lane departure warning to be active.

3. "Driver Assistance"

4. "Steering Wheel Feedback"

5. "Vibration intensity"

6. Select the desired setting.

Turning the Lane Departure

Warning on/off

The setting is applied to all Intelligent Safety

systems.

Turning on the system automatically

Depending on the national-market version, the

system is automatically active after every de-

parture.

Switching steering intervention on/off

The steering intervention can be switched on

and off separately for Active Blind Spot Detec-

tion and lane departure warning.

Turning the system on/off manually

1. "CAR"

Follow instructions for settings, dis-

play, and operation in the Intelligent

Safety chapter.

2. "Settings"

3. "Driver Assistance"

4. "Safety and Warnings"

5. "Lane Departure Warning"

6. "Steering intervention"

Additional information:

Intelligent Safety, refer to page 172.

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Safety

CONTROLS

Depending on the national-market version, the

steering intervention is automatically active af-

ter every driving off.

For instance, the steering intervention will be

suppressed in the following situations:

▷

With hard accelerating or braking.

When flashing.

Display in the instrument cluster

Different system statuses are displayed on

the instrument cluster, depending on vehicle

equipment and national-market version.

With hazard warning system switched on.

In driving situation with high driving dynam-

ics.

▷

While Dynamic Stability Control regulates

driving stability.

Icon

Meaning

Indicator light illuminates green: Sys-

tem is switched on. A lane boundary

has been detected on at least one

side of the vehicle and the system

is ready to intervene. Warnings will

be issued. The system can perform

steering interventions.

Immediately following a steering interven-

tion by the vehicle systems.

When actively merging back to your own

lane after passing.

Warning signal

Depending on the equipment version: in the

event of multiple active steering interventions

by the system within 3 minutes without the

driver's intervention at the steering wheel, an

acoustic warning will sound. A short warning

signal will sound at the second steering inter-

vention. Beginning with the third steering inter-

vention, a continuous warning will sound.

Indicator light flashes green: System

is performing a steering intervention.

Warning function

If you leave the lane

If you leave the lane and if a lane boundary

has been detected, the steering wheel vibrates

in accordance with the steering wheel vibration

setting.

In addition, a Check Control message is dis-

played.

The warning signal and Check Control mes-

sage are an encouragement to pay closer at-

tention to the lane.

When the turn signal is switched on in the cor-

responding direction before changing the lane,

a warning is not issued.

End of warning

For instance, the warning will be canceled in

the following situations:

Steering intervention

Depending on the equipment and national-

market version: if, in the speed range up to

130 mph/210 km/h a lane boundary is crossed,

the system may intervene with a brief active

steering intervention in addition to vibrating.

The steering intervention supports the driver in

keeping the vehicle within the lane. The steer-

ing intervention can be noticed on the steering

wheel and can be manually overridden at any

time. During an active steering intervention,

the display in the instrument cluster will flash.

▷

Automatically after a few seconds.

When returning to your own lane.

With hard accelerating or braking.

With hazard warning system switched on.

When flashing.

While Dynamic Stability Control regulates

driving stability.

▷

While Dynamic Stability Control is disabled.

181

Safety

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▷

Immediately following a steering interven-

tion by the vehicle systems.

A Check Control message may be displayed

when the system is limited.

▷

With manual steering intervention.

When another driver assistance system is

activated, if applicable.

Active Blind Spot Detection

▷

Lane boundaries are not detected.

When the system limits are reached.

Principle

Active Blind Spot Detection detects vehicles

in the blind spot or vehicles approaching from

behind in the adjacent lane.

System limits

The warning light in the exterior mirror warns

the driver at different levels.

Safety information

Warning

General information

Because of system limitations, this system

may either not respond, or respond too late,

incorrectly, or without cause. There is a risk

of accident, injury, or property damage. Ac-

tively intervene as warranted. Refer to the in-

formation in this Owner’s Manual regarding

the scope of the system’s operation and limi-

tations.

Radar sensors monitor the area behind and

next to the vehicle when traveling faster than a

minimum speed.

System limits of the sensors

Additional information:

▷

Cameras, refer to page 35.

The minimum speed is country-specific and is

displayed in the menu for the intelligent Safety

systems.

Functional limitations

The system may be limited in the following

situations:

The system indicates whether there are vehi-

cles in your blind spot, arrow 1, or approaching

from behind in an adjacent lane, arrow 2. The

warning light in the exterior mirror illuminates

dimly.

▷

In the event of missing, worn, poorly visible,

merging, diverging, or multiple lane boun-

daries such as in construction areas.

With lane boundaries that are covered in

snow, ice, dirt or water.

Before you change lanes after setting the turn

signal, the system issues a warning in the

situations described above. The warning light

in the exterior mirror flashes and the steering

wheel vibrates.

▷

In tight corners or on narrow roads.

With lane boundaries that are covered by

objects.

▷

When driving very close to the vehicle in

front of you.

Up to 10 seconds after the start of the en-

gine via the Start/Stop button.

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Safety

CONTROLS

Additional information:

Safety information

Intelligent Safety, refer to page 172.

Warning

Adjusting the Active Blind Spot

Detection

The system cannot serve as a substitute for

the driver’s personal judgment in assessing

the traffic situation. Based on the limits of

the system, it cannot independently react to

all traffic situations. There is a risk of acci-

dent, injury, or property damage. Adjust driv-

ing style to traffic conditions. Watch the sur-

rounding traffic situation closely, be ready to

take over steering and braking at any time,

and actively intervene where appropriate.

Setting the warning time

1. "CAR"

2. "Settings"

3. "Driver Assistance"

4. "Safety and Warnings"

5. "Active Blind Spot Detection"

6. Select the desired setting.

Warning

Setting the intensity of the steering

wheel vibration

1. "CAR"

Indicators and warnings cannot serve as a

substitute for the driver’s personal judgment.

Due to its limits, the system may not issue

warnings or responses, or these may be is-

sued late or in a manner that is not consis-

tent with their normal use. There is a risk of

accident, injury, or property damage. Adjust

driving style to traffic conditions. Watch sur-

rounding traffic closely and actively intervene

where appropriate

2. "Settings"

3. "Driver Assistance"

4. "Steering Wheel Feedback"

5. "Vibration intensity"

6. Select the desired setting.

The setting is applied to all Intelligent Safety

systems.

Sensors

Warning function

The system is controlled by the following sen-

sors:

Warning light in exterior mirror

▷

Radar sensors, side, rear.

Additional information:

Sensors of the vehicle, refer to page 35.

Turning Active Blind Spot Detection

on/off

Turning the system on/off manually

Follow instructions for settings, dis-

play, and operation in the Intelligent

Safety chapter.

The warning light in the exterior mirror warns

of a possible collision with a detected vehicle.

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Safety

CONTROLS

Prewarning

System limits of the sensors

The dimmed warning light in the exterior mirror

indicates when vehicles are in your blind spot

or approaching from the rear.

Additional information:

▷

Radar sensors, refer to page 36.

Functional limitations

The system may be limited in the following

situations:

Acute warning

If the turn signal is activated while a vehicle

is in your hazard area, the steering wheel vi-

brates briefly and the warning light in the exte-

rior mirror flashes brightly.

▷

When a vehicle is approaching at a speed

much faster than your own.

▷

In tight corners or on narrow roads.

The warning stops when the other vehicle has

left the critical area or the turn signal has been

deactivated.

The bumper is dirty, iced up or covered,

for instance by stickers.

A Check Control message may be displayed

when the system is limited.

Warning light flashing

When the vehicle is unlocked, the warning light

in the exterior mirror flashes for self-testing

purposes.

Displaying warnings

Depending on the selected warning settings,

e.g., warning time, more or fewer warnings can

be displayed. However, there may also be an

excess of unwarranted warnings of critical sit-

uations.

System limits

Safety information

Warning

Rear-end collision

preparation

Because of system limitations, this system

may either not respond, or respond too late,

incorrectly, or without cause. There is a risk

of accident, injury, or property damage. Ac-

tively intervene as warranted. Refer to the in-

formation in this Owner’s Manual regarding

the scope of the system’s operation and limi-

tations.

Principle

Depending on the equipment and national-

market version, the rear-end collision prepara-

tion can react to vehicles approaching from be-

hind.

Upper speed limit

If the vehicle speed exceeds approx.

155 mph/250 km/h, the system is deactivated

temporarily.

If the vehicle speed falls below approx.

155 mph/250 km/h, the system is reactivated.

184

Safety

CONTROLS

driving style to traffic conditions. Watch sur-

rounding traffic closely and actively intervene

where appropriate

General information

Sensors

The system is controlled by radar sensors on

the sides at the rear.

Additional information:

Sensors of the vehicle, refer to page 35.

Radar sensors monitor the area behind the ve-

hicle.

Turning rear-end collision

preparation on/off

The system is automatically active when the

vehicle is turned on.

When a vehicle approaches from the rear at a

certain speed, the system can react as follows:

▷

Where applicable, the hazard warning

flashers will be switched on.

The system is deactivated when reversing.

▷

Where applicable, the PreCrash functions

are triggered.

System limits

System limits of the sensors

Additional information:

Safety information

▷

Radar sensors, refer to page 36.

Warning

The system cannot serve as a substitute for

the driver’s personal judgment in assessing

the traffic situation. Based on the limits of

the system, it cannot independently react to

all traffic situations. There is a risk of acci-

dent, injury, or property damage. Adjust driv-

ing style to traffic conditions. Watch the sur-

rounding traffic situation closely, be ready to

take over steering and braking at any time,

and actively intervene where appropriate.

Functional limitations

This function may be restricted if the speed

of the approaching vehicle is much higher or

similar to your own speed.

PostCrash iBrake

Principle

In certain accident situations, the PostCrash

iBrake can automatically bring the vehicle to a

standstill without intervention by the driver.

Warning

Indicators and warnings cannot serve as a

substitute for the driver’s personal judgment.

Due to its limits, the system may not issue

warnings or responses, or these may be is-

sued late or in a manner that is not consis-

tent with their normal use. There is a risk of

accident, injury, or property damage. Adjust

General information

The PostCrash iBrake can reduce the risk of a

further collision and its consequences.

185

Safety

CONTROLS

sure that the driver is rested and alert. Adjust

driving style to traffic conditions.

At standstill

After coming to a halt, the brake is released

automatically.

Function

The system is switched on each time drive-

ready state is switched on.

Harder vehicle deceleration

In certain situations, it may be necessary to

bring the vehicle to a halt more quickly than

automatic braking allows.

After starting the trip, the system is trained to

the driver, so that decreasing alertness or fati-

gue can be detected.

To do this, quickly apply extra force to the

brake. The brake pressure will then be higher

than the brake pressure generated by the au-

tomatic brake function. Automatic braking is

interrupted.

This procedure takes, for example, the follow-

ing criteria into account:

▷

Personal driving style, for instance steering

behavior.

Canceling automatic braking

It may be necessary to interrupt automatic

braking in certain situations, for instance when

making an evasive maneuver.

▷

Driving conditions, for instance time, length

of trip.

The system is active starting at ap-

prox. 43 mph/70 km/h and can also display a

break recommendation.

Cancel automatic braking:

▷

By depressing the brake pedal for slightly

longer.

Break recommendation

▷

By pressing the accelerator pedal for

slightly longer.

Setting break recommendation

The break recommendation can be switched

on or off and adjusted via iDrive.

Fatigue alert

1. "CAR"

2. "Settings"

Principle

3. "General settings"

4. "Fatigue and Focus Alert"

5. Select the desired setting.

The Fatigue Alert can detect decreasing alert-

ness or fatigue of the driver during long, mo-

notonous trips, for instance on highways. The

system recommends a break.

Display

If the driver becomes less alert or fatigued,

a message is displayed in the control display

with the recommendation to take a break.

Safety information

Warning

During the display, various settings can be se-

lected.

The system cannot serve as a substitute for

the driver’s personal judgment in assessing

one's physical state. An increasing lack of

alertness or fatigue may not be detected or

not be detected in time. There is a risk of

accident, injury, or property damage. Make

The system is reset approx. 45 minutes after

parking the vehicle. A break recommendation

can only be displayed again after this time has

elapsed.

186

Safety

CONTROLS

System limits

System functionality may be limited. If the

function is limited, either no warning may be

issued or an unwarranted warning may be is-

sued. The system function may be limited in

the following situations, e.g.:

▷

If the time is set incorrectly.

At a predominantly driven speed below ap-

prox. 43 mph/70 km/h.

▷

With a sporty driving style such as during

rapid acceleration or when cornering fast.

In active driving situations such as when

changing lanes frequently.

▷

When the road condition is poor.

In the event of strong side winds.

187

CONTROLS -> Safety for Your BMW Z4 2 Door Third Generation (2018-2026)

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