brakes BMW 328I SEDAN 2012 Owners Manual

Radar sensors
The radar sensors are located under the rear
bumper.
The system may not be fully functional in the
following situations:
▷Dirty or icy bumper.▷Stickers on the bumper.
A Check Control message is displayed when the
system is not fully functional.
For US owners only
The transmitter and receiver units comply with
part 15 of the FCC/Federal Communication
Commission regulations. Operation is governed
by the following:
FCC ID:
▷NBG009014A.
Compliance statement:
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
▷This device may not cause harmful interfer‐
ence, and▷this device must accept any interference re‐
ceived, including interference that may
cause undesired operation.
Any unauthorized modifications or changes to
these devices could void the user's authority to
operate this equipment.
Brake force display
The concept▷During normal brake application, the outer
brake lamps light up.▷During heavy brake application, the inner
brake lamps light up in addition.
Active Protection
The concept
The Active Protection safety package consists
of systems that are independent of each other:
▷PreCrash▷PostCrash
PreCrash
The concept
The system is used to detect critical driving sit‐
uations that might lead to an accident. In in these
situations, preventative protection measures
are automatically undertaken to minimize the
risk in the event of an accident as much as pos‐
sible.
Critical driving situations may include:
▷Full application of the brakes.▷Severe understeering.▷Severe oversteering.
If the vehicle includes the collision warning fea‐
ture, impending collisions with vehicles driving
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Driving stability control systemsVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
Antilock Brake System ABS
ABS prevents locking of the wheels during brak‐
ing.
The vehicle remains steerable even during full
brake applications, thus increasing active
safety.
ABS is operational every time you start the en‐
gine.
Brake assistant
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost. It thus helps to achieve the shortest
possible braking distance during full braking.
This system utilizes all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the full braking.
DSC Dynamic Stability
Control
The concept
DSC prevents traction loss in the driving wheels
when driving away and accelerating.
DSC also recognizes unstable vehicle condi‐
tions, such as fishtailing or nose-diving. Subjectto physical limits, DSC helps to keep the vehicle
on a steady course by reducing engine speed
and by applying brakes at individual wheels.
Adjust your driving style to the situation
An appropriate driving style is always the
responsibility of the driver.
The laws of physics cannot be repealed, even
with DSC.
Therefore, do not reduce the additional safety
margin by driving in a risky manner.◀
Indicator/warning lamps The indicator lamp flashes: DSC con‐
trols the drive forces and brake forces.
The indicator lamp lights up: DSC has
failed.
Deactivating DSC: DSC OFF
When DSC is deactivated, driving stability is re‐
duced during acceleration and when driving in
bends.
To increase vehicle stability, activate DSC again
as soon as possible.
Deactivating DSC Press and hold the button, but not lon‐
ger than approx. 10 seconds, until the
indicator lamp for DSC OFF lights up in the in‐
strument cluster and DSC OFF is displayed.
The DSC system is switched off.
Activating DSC Press the button.
DSC OFF and the DSC OFF indicator
lamp go out.Seite 104ControlsDriving stability control systems104
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Driving comfortVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
Active Cruise Control with
Stop & Go function, ACC
The concept
This 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 automatically
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 decelerates, applies the brakes
lightly, or accelerates again if the vehicle 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
drives away again, the BMW can still be accel‐
erated 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.Buttons at a glance1System on/off, interrupt2Resume speed3Store speed4Reduce distance5Store, maintain/change speed6Increase distance
Switching on/off and interrupting
cruise control
Switching on Press the button on the steering wheel.
The indicator lamps in the instrument cluster
light up and the mark 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 interrupted,
actively intervene by braking and, if necessary,
with evasive maneuvers; otherwise, there is the
danger of an accident occurring.◀
If switching off the system while stationary,
press on the brake pedal at the same time.
Press the button.
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▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
and distance are deleted.
Interrupting When active, press the button.
If interrupting the system while stationary, press
on the brake pedal at the same time.
The system is automatically interrupted if:
▷The brakes are applied.▷Transmission position D is disengaged.▷DTC Dynamic Traction Control is activated
or DSC is deactivated.▷DSC is actively controlling stability.▷The safety belt and the driver's door are
opened when the vehicle is standing.▷The system has not detected objects for an
extended period, e.g., on a road with very lit‐
tle traffic without road edge line markings.▷Radar sensor is soiled.
Maintaining/storing the speed
Press the button.
or:
Press the rocker switch while the system is in‐
terrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
It is displayed in the speedometer and briefly
displayed in the instrument cluster, Displays in
the instrument cluster, refer to page 111.
When cruise control is maintained or stored,
DSC Dynamic Stability Control is switched on, if
necessary.
Changing, maintaining, and storing the
speed
The rocker switch can be pressed while the sys‐
tem is interrupted to maintain and store the cur‐
rent speed. DSC Dynamic Stability Control is
switched on, if necessary.
Adapting the desired speed
Adapt the desired speed to the road con‐
ditions and be ready to brake at all times; other‐
wise, there is the danger of an accident occur‐
ring.◀
Speed differences
Great speed differences with vehicles
driving ahead of you, e.g., when rapidly ap‐
proaching a truck or when another vehicle
swerves into your own lane, cannot be compen‐
sated for by the system.◀
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 if the road is
clear.
▷Each time the rocker switch is pressed to the
point of resistance, the desired speed in‐
creases or decreases by approx. 1 mph/
1 km/h.Seite 110ControlsDriving comfort110
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▷The marking does not light up: the system is
switched off.
Brief status display
Selected desired speed.
If --- appears briefly on the display for Check
Control messages, it is possible that the system
requirements for operation are currently not
met.
Distance to vehicle ahead of you
The selected distance to the vehicle driving
ahead of you is shown.
Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set after the system is
switched on.The system has been interrupted or
distance control is deactivated be‐
cause the accelerator is being
pressed; a vehicle was not detected.Distance control is deactivated be‐
cause the accelerator is being
pressed; a vehicle was detected.Rolling bars: the detected vehicle has driven
away.Indicator/warning lamps
Personal responsibility
The indicator and warning lamps do not
relieve the driver of the responsibility to adapt
his or her desired driving speed and style to the
traffic conditions.◀
Depending on how the vehicle is equip‐
ped, the indicator lamp in the instrument
cluster indicates whether the system is
switched on.
The vehicle symbol lights up in orange:
A vehicle has been detected ahead of
you.
The vehicle symbol flashes orange:
The conditions are not adequate for op‐
erating the system.
The system was deactivated but applies the
brakes until you actively assume control by
pressing on the brake pedal or accelerator.
The vehicle symbol flashes red and an
acoustic signal sounds:
You are requested to intervene by brak‐
ing or making an evasive maneuver.
System limits
Speed range
Best results are achieved when using the sys‐
tem on well-developed roads and highways.
The desired speed can be selected between
20 mph/30 km/h to 110 mph/180 km/h.
The system can also be activated when station‐
ary.
Comply with the legal speed limit in every situa‐
tion when using the system.Seite 112ControlsDriving comfort112
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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 con‐
ditions make it impossible to drive at a constant
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 vehicle
and cause an accident.◀
Controls
At a glance
1System on/off, interrupt2Resume speed3Store speed4Store, maintain/change speed
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 interrupted,
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:
▷The brakes are applied.▷The clutch pedal is depressed.▷Transmission position D is disengaged.▷DTC Dynamic Traction Control is activated
or DSC is deactivated.▷DSC is actively controlling stability.
Maintaining/storing the current speed
Press the button.
or
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Things to remember when drivingVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
Breaking-in period
General information
Moving parts need to be broken in to adjust to
each other.
The following instructions will help achieve a
long vehicle life and good economy.
Engine and differential
Always obey the official speed limit.
Up to 1,200 miles/2,000 km
Do not exceed the maximum engine and road
speed:▷For gasoline engine, 4,500 rpm and
100 mph/160 km/h.
Avoid full-throttle operation and use of the
transmission's kickdown mode for the initial
miles.
From 1,200 miles/2,000 km
The engine and vehicle speed can gradually be
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac‐
tion potential until after an initial breaking-in pe‐
riod.
Drive conservatively for the first 200 miles/
300 km.
Brake system
Brakes require an initial break-in period of ap‐
prox. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and discs. Drive moderately during this break-in
period.
Following part replacement
The same breaking in procedures should be ob‐
served if any of the components mentioned
above have to be renewed in the course of the
vehicle's operating life.
General driving notes
Closing the trunk lid Drive with the trunk lid closed
Only drive with the tailgate closed; other‐
wise, in the event of an accident or braking or
evasive maneuvers, passengers or other road
users may be injured or the vehicle may be dam‐
aged. In addition, exhaust fumes may enter the
passenger compartment.◀
If driving with the tailgate open cannot be
avoided:▷Close all windows and the glass sunroof.▷Greatly increase the blower speed.▷Drive moderately.
Hot exhaust system
Hot exhaust system
High temperatures are generated in the
exhaust system.
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Do not remove the heat shields installed and
never apply undercoating to them. When driv‐
ing, standing at idle and while parking, take care
to avoid possible contact between the hot ex‐
haust system and any highly flammable materi‐
als such as hay, leaves, grass, etc. Such contact
could lead to a fire, and with it the risk of serious
personal injury as well as property damage.
Do not touch hot exhaust pipes; otherwise, there
is the danger of getting burned.◀
Mobile communication devices in the
vehicle
Mobile communication devices in the ve‐
hicle
It is advised that you do not use mobile commu‐
nication devices, e.g., mobile phones, inside the
vehicle without connecting them directly to the
external antenna. Otherwise, the vehicle elec‐
tronics and mobile communication devices can
interfere with each other. In addition, there is no
assurance that the radiation generated during
transmission will be discharged from the vehicle
interior.◀
Hydroplaning
On wet or slushy roads, a wedge of water can
form between the tires and road surface.
This phenomenon is referred to as hydroplan‐
ing. It is characterized by a partial or complete
loss of contact between the tires and the road
surface, ultimately undermining your ability to
steer and brake the vehicle.
Hydroplaning
When driving on wet or slushy roads, re‐
duce your speed to prevent hydroplaning.◀
Driving through water
Drive though calm water only if it is not deeper
than 9.8 inches/25 cm and at this height, no
faster than walking speed, up to 6 mph/10 km/h.Adhere to water depth and speed limita‐
tions
Do not exceed this water depth and walking
speed; otherwise, the vehicle's engine, the elec‐
trical systems and the transmission may be
damaged.◀
Braking safely
Your vehicle is equipped with ABS as a standard
feature.
Applying the brakes fully is the most effective
way of braking in situations when this is neces‐
sary.
The vehicle maintains steering responsiveness.
You can still avoid any obstacles with a minimum
of steering effort.
Pulsation of the brake pedal and sounds from
the hydraulic circuits indicate that ABS is in its
active mode.
Objects in the area around 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
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 fastened
again after they were removed for cleaning, for
example.◀
Driving in wet conditions
When roads are wet or there is heavy rain, briefly
exert gentle pressure 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.Seite 157Things to remember when drivingDriving tips157
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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, resulting in a
reduction in the brake system efficiency.
Automatic transmission:
You can increase the engine's braking effect by
shifting down in the manual mode of the auto‐
matic transmission.
Avoid load on the brakes
Avoid placing excessive load on the brake
system. Light but consistent brake pressure can
lead to high temperatures, brake wear and pos‐
sibly 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 is unavailable
with the engine stopped.◀
Brake disc corrosion
Corrosion on the brake discs and contamination
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, con‐
densation water develops that exits underneath
the vehicle.
Therefore, traces of condensed water under the
vehicle are normal.Seite 158Driving tipsThings to remember when driving158
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4.Engage transmission position N.5.Switch the engine off. In this way, the igni‐
tion remains switched on, and a Check-Con‐
trol message is displayed.
Transmission position P with the igni‐
tion off
When the ignition is switched off, position P
is engaged automatically. When in an auto‐
matic car wash, for example, ensure that the
ignition is not switched off accidentally.◀
The vehicle cannot be locked from the outside
when in transmission position N.
A signal is sounded when an attempt is made to
lock the vehicle.
Transmission position
Transmission position P is engaged automati‐
cally:
▷When the ignition is switched off.▷After approx. 15 minutes.
Headlamps
▷Do not rub dry and do not use abrasive or
caustic cleansers.▷Soak areas that have been soiled e.g. due to
insects, with shampoo and wash off with
water.▷Thaw ice with deicing spray; do not use an
ice scraper.
After washing the vehicle
After washing the vehicle, apply the brakes
briefly to dry them; otherwise, braking action can
be reduced and corrosion of the brake discs can
occur.
Vehicle care
Car care products
BMW recommends using cleaning and care
products from BMW, since these have been
tested and approved.
Car care and cleaning products
Follow the instructions on the container.
When cleaning the interior, open the doors or
windows.
Only use products intended for cleaning vehi‐
cles.
Cleansers can contain substances that are dan‐
gerous and harmful to your health.◀
Vehicle paint
Regular care contributes to driving safety and
value retention.
Environmental influences can act on the vehicle
paint. Tailor the frequency and extent of your car
care to these influences.
Leather care
Remove dust from the leather often, using a
cloth or vacuum cleaner.
Otherwise, particles of dust and road grime
chafe in pores and folds, and lead to increased
wear and premature degradation of the leather
surface.
To guard against discoloration, such as from
clothing, provide leather care roughly every two
months.
Clean light-colored leather more frequently be‐
cause soiling on such surfaces is substantially
more visible.
Use leather care products; otherwise, dirt and
grease will gradually break down the protective
layer of the leather surface.
Suitable care products are available from the
service center.Seite 297CareMobility297
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