2018 BMW 4 SERIES COUPE Owners Manual

System
limits
Safety
information WARNING
The system can react incorrectly or not
at all due to the system limits. There is a risk of
accidents or risk of property damage. Observe the information regarding the system limits
and actively intervene, if needed.'

Overview
Button
in
the
vehicle
Lane departure warning
Camera
The camera is installed near the interior mirror. Keep the windshield in front of the interior mirj
ror clean and clear.
Switching
on/off Press button.
'yOn: the LED lights up.'yOff: the LED goes out.
The setting is stored for the driver profile curj
rently used.
Display
in
the
instrument
cluster
'yLines: system is activated.'yArrows: at least one lane marking
was detected and warnings can be
issued.Display
in
the
instrument
display'ySymbol orange: system is actij
vated.'yGreen symbol: at least one lane
marking was detected and warnj
ings can be issued.
Issued
warning
If you leave the lane and if a lane marking has
been detected, the steering wheel begins vij
brating.
If the turn signal is set before changing the
lane, a warning is not issued.
End
of
warning
The warning is canceled in the following situaj tions:
'yAutomatically after approx. 3 seconds.'yWhen returning to your own lane.'yWhen braking hard.'yWhen using the turn signal.
System
limits
Safety
information WARNING
The system can react incorrectly or not
at all due to the system limits. There is a risk of
accidents or risk of property damage. Observe the information regarding the system limits
and actively intervene, if needed.'

'yIn tight curves or on narrow lanes.'yWhen the lane markings are covered by
objects.'yWhen driving very close to the vehicle in
front of you.'yWhen driving toward bright lights.'yWhen the windshield in front of the interior
mirror is fogged over, dirty or covered with stickers, etc.'yDuring calibration of the camera immedijately after vehicle delivery.
Active
Blind
Spot
Detection
The
concept
Two radar sensors in the rear bumper monitor
the area behind and next to the vehicle at
speeds above approx. 30 mph/50 km/h.
The system indicates whether there are vehij
cles in the blind spot, arrow 1, or approaching from behind on the adjacent lane, arrow 2.
The lamp in the exterior mirror housing is dimj med.
Before you change lanes after setting the turn
signal, the system issues a warning in the sitj
uations described above.
The lamp in the exterior mirror housing flashes and the steering wheel vibrates.
Safety
information
WARNING
The system does not release from the
personal responsibility to correctly assess visij bility and traffic situation. There is a risk of anaccident. Adjust the driving style to the traffic
conditions. Watch traffic closely and actively intervene in the respective situations.'

The setting is stored for the driver profile curj
rently used.
Display
Lamp
in
the
exterior
mirror
housing
Prewarning
The dimmed lamp in the exterior mirror housj ing indicates when there are vehicles in the
blind spot or approaching from behind.
Acute
warning If the turn signal is set while a vehicle is in the
critical zone, the steering wheel vibrates briefly
and the lamp in the exterior mirror housing
flashes brightly.
The warning stops when the turn signal is
switched off, or the other vehicle leaves the
critical zone.
Brief
flashing A brief flashing of the lamp during vehicle unj
locking serves as system self-test.
System
limits
Safety
information WARNING
The system can react incorrectly or not
at all due to the system limits. There is a risk of
accidents or risk of property damage. Observe the information regarding the system limits
and actively intervene, if needed.'

trips, e.g., on highways. In this situation, it is
recommended that the driver takes a break.
Safety
information WARNING
The system does not release from the
personal responsibility to correctly assess
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 an accij
dent. Make sure that the driver is rested and
alert. Adjust the driving style to the traffic conj
ditions.'

Driving
stability
control
systemsVehicle
features
and
optionsThis 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.
Anti-lock
Braking
System
ABS
ABS prevents locking of the wheels during
braking.
The vehicle maintains its steering power even during full brake applications, thus increasing
active safety.
ABS is operational every time you start the enj gine.
Brake
assistant When you apply the brakes rapidly, this systemautomatically produces the greatest possible
braking force boost. It reduces the braking disj
tance to a minimum during emergency stop.
This system utilizes all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the emergency stop.DSC
Dynamic
Stability
Control
The
concept Within the physical limits, the system helps to
keep the vehicle on a steady course by reducj ing engine speed and by applying brakes tothe individual wheels.
General
information Dynamic Stability Control detects, e.g., the foljlowing unstable driving conditions:'yFishtailing, which can lead to oversteering.'yLoss of traction of the front wheels, which
can lead to understeering.
Dynamic Traction Control DTC, refer to
page 143, is a version of the DSC where forj
ward momentum is optimized.
Safety
information WARNING
The system does not release from the
personal responsibility to correctly assess the
traffic situation. Based on the limits of the sysj
tem, it cannot independently react to all traffic
situations. There is a risk of an accident. Adjust
the driving style to the traffic conditions. Watch
traffic closely and actively intervene in the rej
spective situations.'

Overview
Button
in
the
vehicle
DSC OFF button
Indicator/warning
lights The indicator lamp flashes: DSC conj
trols the drive and braking forces.
The indicator lamp lights up: DSC has
malfunctioned.
Deactivating
DSC:
DSC
OFF
General
information When DSC is deactivated, driving stability is
reduced during acceleration and when driving in curves.
To increase vehicle stability, activate DSC again as soon as possible.
Deactivating
DSC Press and hold this button but not lonjger than approx. 10 seconds, until the
indicator light for DSC OFF lights up in the inj
strument cluster and displays DSC OFF.
DSC is switched off.
The steering and, depending on the equipj
ment, suspension are tuned for sporty driving.
Activating
DSC Press button.
DSC OFF and the DSC OFF indicator lamp goout.
Indicator/warning
lights When DSC is deactivated, DSC OFF is disj
played in the instrument cluster.
The indicator lamp lights up: DSC is
deactivated.
DTC
Dynamic
Traction
Control
Concept
DTC is a version of the DSC where forward
momentum is optimized.
The system ensures maximum headway on
special road conditions or loose road surfaces,
for instance unplowed snowy roads, but with somewhat limited driving stability.
When DTC is activated, the vehicle has maxij
mum traction. Driving stability is limited during
acceleration and when driving in curves.
Drive carefully.
You may find it useful to briefly activate DTC
under the following special circumstances:'yWhen driving in slush or on uncleared,
snow-covered roads.'yWhen freeing vehicle from deep snow or driving off from loose ground.'yWhen driving with snow chains.
Deactivating/activating
DTC
Dynamic
Traction
Control
Activating
DTC Press button.
TRACTION is displayed in the instruj
ment cluster and the indicator light for DSC OFF lights up.
Seite 143Driving
stability
control
systemsControls143
Online Edition for Part no. 01402978133 - II/17

Deactivating
DTCPress button again.
TRACTION and the DSC OFF indicaj
tor light go out.
xDrive xDrive is the all-wheel-drive system of your vej
hicle. Concerted action by the xDrive and DSC
further optimize traction and driving dynamics. The xDrive all-wheel-drive system variably disj
tributes the drive forces to the front and rear
axles as demanded by the driving situation and
road surface.
Dynamic
Damping
Control
Concept
This system reduces undesirable vehicle moj tion when using a dynamic driving style or travj eling on uneven road surfaces.
This enhances the driving dynamics and drivj
ing comfort depending on the road surface condition and driving style.
ProgramsThe system offers several different programs.
The programs can be selected via Driving Dyj namics Control.
SPORT Consistently sporty control of the shock abj
sorbers for greater driving agility.
SPORT+ Consistently sporty control of the shock abj
sorbers for greater driving agility when driving
with limited driving stabilization.
COMFORT/ECO
PRO
Balanced control of the vehicle.Variable
sport
steering
The support offered by the variable sportsteering changes according to the angle by
which the steering wheel has been turned and
the speed.
So, for instance the steering angle of the front
wheels is made larger when parking or taking tight corners. This makes it easier to drive
around bends.
Furthermore, the system provides the steering
with more support at low speeds than at higher
ones. This makes it easier to park, for instance,
and makes steering more direct when driving
at faster speeds.
By taking the angle by which the steering
wheel has been turned and the speed into acj
count, a sporty steering response adapted to
the particular driving situation can be achieved.
Driving
Dynamics
Control Concept
The Driving Dynamics Control helps to fine- tune the vehicle's settings and features. Varij
ous programs can be selected for this purpose.
The Driving Dynamics Control and the DSC
OFF buttons can each be used to activate a
program.
Overview
Button
in
the
vehicleSeite 144ControlsDriving
stability
control
systems144
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