BMW X3 2018 Owners Manual

HDC
Hill
Descent
Control
Concept
Hill Descent Control, HDC, is a downhill control feature that controls the vehicle speed on
steep downhill grades, for instance when drivj
ing on unpaved roads.
When the system is active, the vehicle moves
at the speed set by the driver, without the driver having to depress the brake pedal.
While HTC is controlling the speed, the system
automatically distributes the braking force to
the individual wheels. This improves vehicle drivability and stability. If necessary, the Antij
lock Brake System prevents the wheels from
locking.
General
information
Hill Descent Control can be activated at
speeds below approx. 25 mph/40 km/h.
Speeds can be set between approx.
2 mph/3 km/h and approx. 20 mph/30 km/h.
When the vehicle is moving downhill, the sysj tem reduces the speed to the set value, within
the physical limits.
Overview
Button
in
the
vehicle
HDC
Activating
HDC Press button. The LED above the buttonlights up.
Speeds between approx. 2 mph/3 km/h and
approx. 20 mph/30 km/h are adopted as the desired speed.
Emergency braking function, Active PDC: the emergency braking function, refer topage 188, is deactivated.
Display
in
the
instrument
cluster A symbol and the selected dej
sired speed are displayed.'yGreen display: HDC is acj
tive, the system is reducing
the vehicle speed.'yGray display: HDC is on standby.
Display
in
the
Head-up
Display
The HDC status can also be displayed in the Head-up Display.
Increasing
or
decreasing
vehicle
speed
Using
the
cruise
control
rocker
switch
The desired speed can be changed using the cruise control rocker switch on the steeringwheel.
'yPress the rocker switch up: the speed inj
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'yPress the rocker switch up and hold: thespeed increases while the rocker switch is
pressed.'yPress the rocker switch down: the speed reduces gradually.'yPress the rocker switch down and hold: thespeed reduces while the rocker switch is
pressed.
Using
the
brake
pedal
While HDC is controlling the speed, the set dej
sired speed can be reduced by depressing the
brake pedal.
Deactivating
HDC Press button again. The LED goes out.HDC is automatically deactivated above
approx. 25 mph/40 km/h.
Malfunction
If a malfunction occurs, a message is displayed
in the instrument cluster.
Variable
sport
steering The variable sport steering facilitates a directand agile driving style with little steering effort.
The variable sports steering works independj
ently of the current speed, varying the steering ratio in line with the steering angle.
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Driver
assistance
systemsVehicle
features
and
options
This chapter describes all standard, country- specific and optional features offered with theseries. It also describes features that are notnecessarily available in your vehicle, e. g., due
to the selected options or country versions.
This also applies to safety-related functions
and systems. When using these functions and systems, the applicable laws and regulations
must be observed.
Cruise
controlConcept
Using this system, a desired speed can be adj justed using the buttons on the steering wheel.
The system maintains the desired speed. The system accelerates and brakes automaticallyas needed.
General
information
Depending on the vehicle setting, the cruise
control characteristic can change in certain ranges. For instance, the acceleration in ECOPRO driving mode is more gentle.
Safety
information WARNING
The system does not relieve from perj
sonal responsibility to assess the traffic situaj tion. Based on the limits of the system, it canjnot independently react to all traffic situations.
There is a risk of an accident. Adjust driving
style to traffic conditions. Watch traffic closely
and actively intervene where appropriate.'

The indicator lights in the instrument clusterlight up and the mark in the speedometer is set
to the current speed.
Cruise control is active. The current speed is
maintained and stored as desired speed.
DSC Dynamic Stability Control is switched on,
if necessary.
Switching
off Press button on the steering wheel.
The displays go out. The stored desired speed is deleted.
Pausing
cruise
control
Interrupting
manually When active, press the button.
Interrupting
automatically
The system is automatically interrupted in the following situations, for example:'yWhen the driver applies the brakes.'ySteptronic transmission: when selector
lever position D is disengaged.'yDynamic Traction Control DTC is activated
or DSC Dynamic Stability Control is deactij vated.'yIf DSC Dynamic Stability Control interj
venes.'yWhen SPORT PLUS is activated with Drivj ing Dynamics Control.Setting
the
speed
Maintaining
and
storing
the
speed
Press the rocker switch while the system is inj terrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
The stored speed is displayed, refer to
page 175, in the speedometer and briefly in
the instrument cluster.
DSC Dynamic Stability Control is switched on,
if necessary.
The speed can also be stored by pressing a
button.
Press button.
Changing
the
speed
Press the rocker switch up or down repeatedly
until the desired speed is set.
If active, the displayed speed is stored and the vehicle reaches the stored speed when the
road is clear.
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'yEach time the rocker switch is pressed to
the resistance point, the desired speed inj
creases or decreases by 1 mph/1 km/h.'yEach time the rocker switch is pressed
past the resistance point, the desired
speed changes by a maximum of 5 mph/
10 km/h.
The maximum speed that can be set dej
pends on the vehicle.'yPressing the rocker switch to the resistj
ance point and holding it accelerates or dej
celerates the vehicle without requiring
pressure on the accelerator pedal.
After the rocker switch is released, the vej
hicle maintains its final speed. Pressing the
switch beyond the resistance point causes
the vehicle to accelerate more rapidly.
Continuing
cruise
control
An interrupted cruise control can be continued
by calling up the stored speed.
Make sure that the difference between current
speed and stored speed is not too large before calling up the stored speed. Otherwise, uninjtentional braking or accelerating may occur.
Press button with the system interjrupted.
Cruise control is continued with the stored valj
ues.
In the following cases, the stored speed value is deleted and cannot be called up again:
'yWhen the system is switched off.'yWhen drive-ready state is switched off.
Displays
in
the
instrument
cluster
Display
in
the
speedometer
'yGreen marking: system is
active, the marking indicates
the desired speed.'yOrange/white marking: sysj
tem is interrupted, the markjing indicates the stored
speed.'yNo marking: system is switched off.
Indicator
light
'yIndicator light green: system is acj
tive.'yGray indicator light: the system has
been interrupted.'yNo indicator light: system is switched off.
Status
display
The selected desired speed is hidden
after a brief time.
Displays
in
the
Head-up
Display Some system information can also be disjplayed in the Head-up Display.
The symbol is displayed when the set
desired speed is reached.
System
limits
The desired speed is also maintained downhill. The speed may not be maintained on uphill
grades if the engine power is insufficient.
In ECO PRO driving mode, the vehicle may exj ceed or drop below the set desired speed insome situations, for instance on downhill or
uphill grades.
Active
Cruise
Control
withStop
&
Go
function
ACC
Concept
Using this system, a desired speed and a disj
tance to a vehicle ahead can be adjusted using the buttons on the steering wheel.
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The system maintains the desired speed onclear roads. For this purpose, the vehicle acj
celerates or brakes automatically.
If a vehicle is driving ahead of you, the system
adjusts the speed of your vehicle so that the
set distance to the vehicle ahead is mainj
tained. The speed is adjusted as far as the
given situation allows.
General
information A radar sensor is located in the front bumper
and a camera on the interior mirror to detect
vehicles driving ahead of you.
Depending on the vehicle setting, the cruise
control characteristic can change in certain
ranges. For instance, the acceleration in ECO
PRO driving mode is more gentle.
The distance can be adjusted in several steps.
For safety reasons, it depends on the respecj
tive speed.
If the vehicle ahead of you brakes to a halt, and
then proceeds to drive again within a brief pej
riod, the system is able to detect this within the
given system limits.
Safety
information WARNING
The system does not relieve from perj
sonal responsibility to assess the traffic situaj tion. Based on the limits of the system, it canjnot independently react to all traffic situations.
There is a risk of an accident. Adjust driving style to traffic conditions. Watch traffic closelyand actively intervene where appropriate.'

ButtonFunctionWithout steering and lane controlassistant:
Increase distance, refer to
page 179.Without steering and lane control
assistant:
Reduce distance, refer to page 179.With steering and lane control assisj
tant:
Adjust distance, refer to page 179.Rocker switch:
Set speed, refer to page 178.With steering and lane control assisj
tant:
Steering and lane control assistant
incl. Traffic Jam Assist on/off, refer to page 182.
Radar
sensor
The radar sensor is located in the front
bumper.
Always keep radar sensor clean and unobj
structed.
Camera
The camera is installed near the interior mirror.
Keep the windshield in front of the interior mirj
ror clean and clear.
Area
of
application The system is best used on well-constructedroads.
The minimum speed that can be set is 20 mph/30 km/h.
The maximum speed that can be set is 115 mph/180 km/h.
The system can also be activated when staj tionary.
Switching
on/off
and
interrupting
cruise
control
Switching
on Press button on the steering wheel.
The indicator lights in the instrument cluster light up and the mark in the speedometer is set
to the current speed.
Cruise control is active. The current speed is
maintained and stored as desired speed.
DSC Dynamic Stability Control is switched on,
if necessary.
Switching
off To switch off the system while standing, stepon brake pedal at the same time.
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Press button on the steering wheel.
The displays go out. The stored desired speed
is deleted.
Interrupting
manually When active, press the button on the
steering wheel.
If interrupting the system while stationary,
press on the brake pedal at the same time.
Interrupting
automatically
The system is automatically interrupted in the following situations:'yWhen the driver applies the brakes.'yWhen selector lever position D is disenj
gaged.'yDynamic Traction Control DTC is activated
or DSC Dynamic Stability Control is deactij vated.'yIf DSC Dynamic Stability Control interj
venes.'yIf the safety belt is unbuckled and the drivj
er's door is opened while the vehicle is standing still.'yIf the system has not detected objects for
an extended period, for instance on a road
with very little traffic without curb or
shoulder markings.'yIf the detection range of the radar is imj paired, for instance by dirt or heavy fog.'yAfter a longer stationary period when the
vehicle has been braked to a stop by the system.Setting
the
speed
Maintaining
and
storing
the
speed
Press the rocker switch while the system is inj terrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
The stored speed is displayed, refer to
page 179, in the speedometer and briefly in
the instrument cluster.
DSC Dynamic Stability Control is switched on,
if necessary.
The speed can also be stored by pressing a
button.
Press button.
Changing
the
speed
Press the rocker switch up or down repeatedly
until the desired speed is set.
If active, the displayed speed is stored and the vehicle reaches the stored speed when the
road is clear.
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'yEach time the rocker switch is pressed to
the resistance point, the desired speed inj
creases or decreases by 1 mph/1 km/h.'yEach time the rocker switch is pressed
past the resistance point, the desired
speed changes by a maximum of 5 mph/
10 km/h.
Hold the rocker switch in position to repeat the action.
Adjusting
distance
Safety
information WARNING
The system does not relieve from perj
sonal responsibility. Due to the system limits, braking can be late. There is a risk of accidentsor risk of damage to property. Be aware to thetraffic situation at all times. Adjust the distance
to the traffic and weather conditions and mainj
tain the prescribed safety distance, possibly by braking.'

SymbolDescriptionDistance 1Distance 2Distance 3Distance 4
This value is set automatically
after the system is switched
on.System interrupted.No distance control display, as
the accelerator pedal is being
pressed.
Detected
vehicle
SymbolDescriptionGreen symbol:
A vehicle has been detected
ahead of you. The system
maintains the set distance to
the vehicle in front.As soon as the detected vehicle drives off, the vehicle symbol in the distance indicator willmove away.
To accelerate, activate ACC, for instance by briefly stepping on the accelerator pedal or
pressing the rocker switch.
Indicator/warning
lightsSymbolDescriptionVehicle symbol flashes:
The conditions are not adej
quate for the system to work.
The system was deactivated
but applies the brakes until you
actively resume control by
pressing on the brake pedal or
accelerator pedal.The vehicle symbol and disj
tance bars flash red and an
acoustic signal sounds:
Brake and make an evasive
maneuver, if necessary.
Displays
in
the
Head-up
Display
Desired
speed Some system information can also be disj
played in the Head-up Display.
The symbol is displayed when the set
desired speed is reached.
Distance
information The symbol is displayed when the disjtance from the vehicle traveling ahead
is too short.
The distance information is active in the folj
lowing situations:
'yActive Cruise Control switched off.Seite 180ControlsDriver
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