2013 BMW 3 SERIES SEDAN Downhill

Driving comfortVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equip‐
ment is also described that is not available in a
vehicle, e. g., because of the selected optional
equipment or country variant. This also applies
for safety-related functions and systems.
Active Cruise Control with Stop & Go function, ACC
The conceptThis system can be used to select a desired
speed that the vehicle will maintain automati‐
cally on clear roads.
To the extent possible, the system automati‐
cally adjusts the speed to a slower vehicle
ahead of you.
The distance that the vehicle maintains to the
vehicle ahead of you can be varied.
For safety reasons, it depends on the speed.
To maintain a certain distance, the system au‐
tomatically reduces the speed, applies the
brakes lightly, or accelerates again if the vehi‐
cle ahead begins moving faster.
If the vehicle ahead of you brakes to a halt, the
system is able to detect this within the given
system limits. If the vehicle ahead of your
drives away again from a halt, your vehicle is
able to accelerate if operated accordingly.
Even if some time passes before the vehicle
ahead of you drives away again, your own vehi‐
cle can still be accelerated automatically and
simply.
As soon as the road is clear, it accelerates to
the desired speed.The speed is also maintained on downhill gra‐
dients, but may not be maintained on uphill
slopes if engine power is insufficient.
General information
Depending on the set driving program, the
characteristics of the cruise control can
change in certain areas.
Hints Personal responsibility
Even an active system does not release
the driver from personal responsibility for the
driving process, especially for lane tracking,
adaptation of speed, distance and driving style
to the traffic conditions.
Because of technical system limits, the system
cannot independently react appropriately in all
traffic situations.
Monitor the driving process, the surrounding
area and what is occurring in traffic continu‐
ously and attentively and actively intervene as
required, e.g., by braking, steering or making an evasive maneuver.◀
Unfavorable weather conditions
In the event of unfavorable weather and
light conditions, e. g. if there is rain, snowfall,
slush, fog or glare, this may result in poorer
recognition of vehicles and lane limits as well
as short-term interruptions for vehicles that are
already detected. Drive attentively, and react to
the current traffic events. Intervene actively
when necessary, e.g., by braking, steering or
making an evasive maneuver, otherwise, there
is danger of an accident.◀Seite 121Driving comfortControls121
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Malfunction
The system cannot be activated if the radar
sensor is not aligned correctly. This may be
caused by damage incurred during parking, for
example.
A Check Control message is displayed if the
system fails.
Cruise control
The concept The system is functional at speeds beginning
at approx. 20 mph/30 km/h.
It maintains the speed that was set using the
control elements on the steering wheel.
The system brakes on downhill gradients if en‐
gine braking action is insufficient.
Unfavorable conditions
Do not use the system if unfavorable
conditions make it impossible to drive at a con‐
stant speed, for instance:▷On curvy roads.▷In heavy traffic.▷On slippery roads, in fog, snow or rain, or
on a loose road surface.
Otherwise, you could lose control of the vehi‐
cle and cause an accident.◀
General information
Depending on the set driving program, the
characteristics of the cruise control can
change in certain areas.
At a glance
Buttons on the steering wheelPress the buttonFunctionSystem on/off, interruptStore speedResume speedRocker switch: change,
hold, store speed
Controls
Switching on Press the button on the steering
wheel.
The marking in the speedometer is set to the
current speed.
Cruise control can be used.
Switching off Deactivated or interrupted system
If the system is deactivated or inter‐
rupted, actively intervene by braking and, if
necessary, with evasive maneuvers; otherwise,
there is the danger of an accident occurring.◀
Press the button.
▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
is deleted.
Interrupting When active, press the button.
The system is automatically interrupted if:
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▷ "Parking Assistant" Select the symbol
on the Control Display.▷Press the button.
Interrupting automatically
The system is interrupted automatically in the
following situations:
▷If the driver grasps the steering wheel or if
he takes over steering.▷If a gear is selected that does not match
the instruction on the Control Display.▷If a turn signal is activated in the opposite
direction to the desired side for parking.▷If the vehicle speed exceeds approx.
6 mph/10 km/h.▷On snow-covered or slippery road surfaces
if necessary.▷When there are obstacles that are hard to
overcome, such as curbs.▷When there are obstacles that suddenly
arise.▷If a maximum number of parking attempts
or the time taken for parking is exceeded.
A Check Control message is displayed.
Continuing
An interrupted parking procedure can be con‐
tinued if necessary.
Follow the instructions on the Control Display
to do this.
System limits
No parking assistance The parking assistant does not offer assis‐
tance in the following situations:
▷In tight curves.
Functional limitations
The system may not be fully functional in the
following situations:
▷On bumpy road surfaces such as gravel
roads.▷On slippery ground.▷On steep uphill or downhill grades.▷When leaves or snow has collected in the
parking space.
Limits of ultrasonic measurement
The detection of objects can reach the physi‐
cal limits of ultrasonic measurement, e.g., in
the following circumstances:
▷For small children and animals.▷For persons with certain clothing, e.g.
coats.▷If there is an external disturbance of the ul‐
trasound, e.g. from passing vehicles or
loud machines.▷When sensors are soiled, iced over or dam‐
aged.▷Under certain weather conditions, e.g.,
high relative humidity, rain, snowfall or
strong wind.▷With tow bars and trailer hitches of other
vehicles.▷With thin or wedge-shaped objects.▷With moving objects.▷With elevated, protruding objects such as
ledges or cargo.▷With objects with corners and sharp edges.▷With objects with a fine surface structure,
such as fences.▷For objects with porous surfaces.
Low objects already displayed, e.g., curbs, can
move into the blind area of the sensors before
or after a continuous tone sounds.
The parking assistant may identify parking
spaces that are not suitable for parking.
Malfunction
A Check Control message is displayed.
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Objects within the range of movement
of the pedals
No objects in the area around the pedals
Keep floor mats, carpets, and any other
objects out of the area of motion of the pedals;
otherwise, the function of the pedals could be
impeded while driving and create the risk of an
accident.
Do not place additional floor mats over existing
mats or other objects.
Only use floor mats that have been approved
for the vehicle and can be properly fixed in
place.
Ensure that the floor mats are securely fas‐
tened again after they were removed for clean‐
ing, for example.◀
Driving in wet conditions When roads are wet coated with road salt or
there is heavy rain, briefly exert gentle pres‐
sure on the brake pedal every few miles.
Ensure that this action does not endanger
other road users.
The heat generated in this process helps dry
the brake discs and pads.
In this way braking efficiency will be available
when you need it.
Hills
Drive long or steep downhill gradients in the
gear in which the least braking is required.
Otherwise, the brake system may overheat, re‐
sulting in a reduction in the brake system effi‐
ciency.
You can increase the engine's braking effect
by shifting down, going all the way to first gear,
if necessary.
Avoid load on the brakes
Avoid placing excessive load on the
brake system. Light but consistent brake pres‐
sure can lead to high temperatures, brake wear
and possibly even brake failure.◀Do not drive in neutral
Do not drive in neutral or with the engine
stopped, as doing so disables engine braking.
In addition, steering and brake assist are un‐
available with the engine stopped.◀
Brake disc corrosion The corrosion on the brake discs and the con‐
tamination on the brake pads are furthered by:▷Low mileage.▷Extended periods when the vehicle is not
used at all.▷Infrequent use of the brakes.
Corrosion occurs when the minimum pressure
that must be exerted by the pads during brake
applications to clean the discs is not reached.
Should corrosion form on the brake discs, the
brakes will tend to respond with a pulsating ef‐
fect that generally cannot be corrected.
Condensation under the parked
vehicle
When using the automatic climate control,
condensation water develops that exits under‐
neath the vehicle.
Traces of water under the vehicle like this are
normal.
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Avoid high engine speeds
Use 1st gear to get the vehicle in motion. Be‐
ginning with 2nd gear, accelerate rapidly.
When accelerating, shift up before reaching
high engine speeds.
When you reach the desired speed, shift into
the highest applicable gear and drive with the
engine speed as low as possible and at a con‐
stant speed.
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
The gear shift indicator of your vehicle indi‐
cates the most fuel efficient gear.
Use coasting When approaching a red light, take your foot
off the accelerator and let the vehicle coast to
a halt.
On a downhill gradient, take your foot off the
accelerator and let the vehicle roll.
The flow of fuel is interrupted while coasting.
Switch off the engine during longer stops
Switch off the engine during longer stops, e.g.,
at traffic lights, railroad crossings or in traffic
congestion.
Auto Start/Stop function The Auto Start/Stop function of your vehicle
automatically switches off the engine during a
stop.
If the engine is switched off and then restarted
rather than leaving the engine running con‐
stantly, fuel consumption and emissions are
reduced. Savings can begin within a few sec‐
onds of switching off the engine.
Using this system can cause certain compo‐
nents of the vehicle to become worn prema‐
turely.In addition, fuel consumption is also deter‐
mined by other factors, such as driving style,
road conditions, maintenance or environmental
factors.
Switch off any functions that
are not currently needed
Functions such as seat heating and the rear
window defroster require a lot of energy and
reduce the range, especially in city and stop-
and-go traffic.
Therefore, switch off these functions if they
are not actually needed.
The ECO PRO driving program supports the
energy conserving use of comfort functions.
These functions are automatically deactivated
partially or completely.
Have maintenance carried
out
Have vehicles maintained regularly to achieve
optimal vehicle economy and operating life.
The maintenance should be carried out by
your service center.
Also note the BMW Maintenance System, refer
to page 204.
ECO PRO
The concept ECO PRO supports a driving style that saves
on fuel consumption. For this purpose, the en‐
gine control and comfort functions, e. g. the
climate control output, are adjusted.
In addition, context-sensitive instructions can
be displayed that assist in driving in a manner
that optimizes fuel consumption.
In the instrument display, the extension of the
range achieved by this can be displayed as a
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▷Energy recovery.▷Climate control output.▷Coasting.
Display ECO PRO tips
"ECO PRO Tips"
The setting is stored for the profile currently in
use.
Coasting
The concept
The system helps to conserve fuel.
To do this, under certain conditions the engine
is automatically decoupled from the transmis‐
sion when transmission position D is engaged.
The vehicle continues traveling with the engine
idling to reduce fuel consumption. Transmis‐
sion position D remains engaged.
This driving condition is referred to as coast‐
ing.
As soon as the brake or accelerator pedal is
depressed, the engine is automatically coupled
to the transmission again.
Hints Coasting is a component of the ECO PRO, re‐
fer to page 173, driving mode.
Coasting is automatically activated when ECO
PRO mode is called via the Driving Dynamics
Control.
The function is available in a certain speed
range.
A forward-looking driving style helps the driver
to use the function as often as possible and supports the fuel-conserving effect of coast‐
ing.
Safety mode
The function is not available if one of the fol‐ lowing conditions is satisfied.
▷DSC OFF or TRACTION activated.▷Driving in the dynamic limit range and on
steep uphill or downhill grades.▷Battery charge status temporarily too low
or vehicle electrical system drawing exces‐
sive current.▷Cruise control activated.
Functional requirements
In ECO PRO mode, this function is available in
a speed range from approximately 30 mph, ap‐
prox. 50 km/h to 100 mph, approx. 160 km/h, if
the following conditions are satisfied:
▷Accelerator pedal and brake pedal are not
operated.▷The selector lever is in transmission posi‐
tion D.▷Engine and transmission are at operating
temperature.
Display
Display in the instrument cluster The mark in the bar display be‐
low the tachometer is backlit in
blue and is located at the zero
point. The tachometer approxi‐
mately indicates idle speed.
The coasting point indicator is illuminated at
the zero point during coasting.
Indications on the Control Display
The Coasting driving condition is displayed in
EfficientDynamics Info while this driving mode
is active.
The distance traveled in the Coasting driving
condition is indicated by a counter.
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Color code blue, arrow 1, and symbol, arrow 2:
driving condition Coasting.
Displaying EfficientDynamics info
1."Vehicle Info"2."EfficientDynamics"3. "EfficientDynamics info"
Deactivating the system manually The function can be deactivated in the Config‐
ure ECO PRO, refer to page 174, menu, e.g., to
use the braking effect of the engine when trav‐
eling downhill.
The setting is stored for the profile currently in
use.
ECO PRO driving style analysis
The concept
The system helps in this situation to develop
an especially efficient driving style and to con‐
serve fuel.
For this purpose, the driving style is analyzed.
The assessment is done in various categories
and is displayed on the Control Display.
Using this indication, the individual driving
style can be oriented toward conserving fuel.
The last fifteen minutes of a trip are evaluated.
The range of the vehicle can be extended by
an efficient driving style.
This gain in range is displayed as a bonus
range in the instrument cluster and on the
Control Display.
Functional requirement
The function is only available in ECO PRO
mode.
Calling up ECO PRO driving style
analysis
Via the Driving Dynamics Control1.Activate ECO PRO.2."EfficientDynamics"3. Select the symbol.
Display
Display on the Control Display
The display of the ECO PRO driving style anal‐
ysis consists of a symbolized road route and a
lookup table.
The road symbolizes the efficiency of the driv‐
ing style. The more efficient the driving style,
the smoother the depicted road route be‐
comes, arrow 1.
The table of values contains stars. The more
efficient the driving style, the more stars are in‐
cluded in the table and the faster the bonus
range increases, arrow 2.
If, on the other hand, the driving style is ineffi‐
cient, a wavy road and a reduced number of
stars is displayed.
To assist with an efficient driving style, ECO
PRO tips are displayed during the drive.
Tips about the energy saving driving style,
Conserving fuel, refer to page 172.
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