2012 BMW 128I brake

Driving
62 3.Using the screwdriver from the onboard
vehicle tool kit, refer to page227, press the
red lever, see arrow, while moving the
selector lever to the desired position.
7-gear Sport automatic
transmission with double
clutch*
The concept
The 7-gear Sport automatic transmission with
double clutch is an automated manual trans-
mission with two clutches and secondary gear
sets in which the clutching and shifting is han-
dled by an electrohydraulic system.
With the 7-gear Sport automatic transmission
with double clutch, the gears are shifted without
an interruption in driving power.
You operate the 7-gear Sport automatic trans-
mission with double clutch using the selector
lever and two shift paddles on the steering
wheel.
It offers you the following functions:
>Either manual or automatic mode: sequen-
tial mode or drive mode
>Automatic downshifting and protection
against incorrect gear selection, even in
sequential mode
>Acceleration assistant, Launch Control,
refer to page66
>Automatic intermediate throttle application
System limitations
The 7-gear Sport automatic transmission with
double clutch has an overheating protection
that protects the clutch from extreme loads.
The indicator lamp lights up in yellow if
the transmission becomes too warm.
Avoid high engine loads and frequent
accelerations from zero. If the transmission is
overheated, the indicator lamp lights up in red
and the power flow to the motor is interrupted. It
is only possible to continue driving once the
transmission has cooled down.
Avoid frequent powerful accelerations from
zero and do not hold the vehicle on inclines by
pressing lightly on the accelerator while letting
the clutch slip, as this may cause the transmis-
sion to overheat.
Selector lever positions
P R N D M/S + –
The selector lever position and the engaged
gear are displayed, e.g. M4.
Engaging selector lever positions
>The selector lever can be moved out of
position P only with the engine running:
interlock.
>Before moving the lever away from P or N
with the vehicle stationary, first depress the
brake; otherwise, the desired shift will not
be executed: shiftlock.

Controls
63Reference
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Shifting into N, D, R
Briefly push the selector lever in the desired
direction, overcoming a resistance point if nec-
essary. When shifting out of P or into R, simul-
taneously press the button 1.
The engaged selector lever position is also dis-
played on the selector lever.
When you release the selector lever, it returns
to its center position.
Shifting into P
Press the buttonP.
P Park
Select this only when the vehicle is stationary.
The rear wheels are locked.
The transmission is shifted into P if, with
the engine running, you open the driver's
door, do not have your safety belt fastened, and
subsequently actuate neither the brake pedal
nor the accelerator. Before leaving the vehicle,
make sure that the automatic transmission
selector lever is in the park position. Otherwise,
the vehicle may begin to move.<
The transmission is shifted into P as soon
as you switch off the engine, unless the
transmission is in N and the remote control is in
the ignition lock, refer to page57. As soon as you remove the remote control from the ignition
lock, then the transmission is shifted into P.<
R Reverse
Select this only when the vehicle is stationary.
N Neutral
You can select this in a car wash, for example.
The vehicle can roll.
After the engine is switched off, the trans-
mission remains in N if you leave the
remote control in the ignition lock. You can use
this function at a car wash, for example, refer to
page224.<
D Drive mode
In Drive mode, all forward gears are shifted
automatically.
Kickdown
For sudden acceleration maneuvers such as
passing, depress the accelerator past the resis-
tance point. This provides maximum accelera-
tion.
Sport program and manual operation
M/S
Push selector lever toward the left from the
selector lever position D, the Sport program is
activated. This position is recommended for a
performance-oriented driving style.
The engaged gear, e.g. S1, is displayed in the
instrument cluster.
When you press the selector lever forwards or
backwards, the manual mode is activated and
Steptronic changes gear.

Controls
65Reference
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The LED in the button goes out.
Manually unlocking parking lock
In the event of a power supply interrup-
tion such as a discharged or discon-
nected battery or an electrical malfunction, the
parking lock must be manually unlocked; other-
wise, the rear wheels are immobilized and the
vehicle cannot be towed.<
Only unlock the parking lock manually for tow-
ing and make sure to set the parking brake
forcefully beforehand so that the vehicle cannot
roll. Lock the parking lock again after the vehicle
is parked.
Releasing
1.Unclip the sleeve of the selector lever.
2.Pull the sleeve up over the selector lever
until the sleeve is inside out.
3.Using the allen wrench from the tool kit,
refer to page227, rotate the cover until it
reaches the stop, arrow 1, and remove,
arrow2.
4.Insert allen wrench into the opening,
arrow1.5.Rotate allen wrench until it reaches the
stop, arrow2. The parking lock is unlocked.
Do not turn allen wrench in the oppo-
site direction; otherwise, you may
damage the mechanism.<
6.Remove allen wrench from the opening.
After parking the vehicle, lock the parking
lock again. Otherwise, there is a danger
that the vehicle will roll.<
Locking
1.Press the button, see arrow.
The parking lock is locked again.
2.Replace cover again.
3.Clip the selector lever sleeve back into
place.
4.Forcefully apply the parking brake.
Jump-starting and towing, starting on
page235.

Driving
66
Launch Control
Launch Control enables an optimum accelera-
tion when starting off on a road surface with
good traction.
Do not use Launch Control too often; oth-
erwise, the powerful stresses on the vehi-
cle will lead to premature component wear.<
Launch Control is ready for use when the
engine is at operating temperature, i.e. after
uninterrupted travel of at least 6.2 miles/10 km.
1.With the engine running, step on the brake
with your left foot.
2.Activate Dynamic Traction Control (DTC),
refer to page84.
3.Activate Driving dynamics control, refer to
page64.
4.With the vehicle stationary, activate the
manual mode and select 1
stgear.
5.With your right foot, push the accelerator
pedal past the resistance point. The engine
speed for pulling away is adjusted. A flag
symbol appears in the instrument cluster.
6.When you release the brake pedal, the vehi-
cle accelerates. Keep the accelerator pedal
floored.
7.The upshifting occurs automatically as long
as you keep the accelerator pedal pressed
past the resistance point.
Launch Control will be ready for use again after
you drive a certain distance.
Launch Control is not available for use during
the break-in phase, refer to page116.
To maintain driving stability, keep DSC
activated whenever possible.<
Turn signals/
headlamp flasher
1High beams
2Headlamp flasher
3Turn signal
Using turn signals
Press the lever beyond the resistance point.
To turn off manually, press the lever to the
resistance point.
Unusually rapid flashing of the indicator
lamp and the turn signals indicates that
one of the turn signal bulbs has failed.<
Signaling a turn briefly
Press the lever as far as the resistance point for
as long as you wish to signal a turn.
Triple turn signal activation
Press the lever as far as the resistance point.
The turn signals flash three times.
You can activate or deactivate this function.
1."Settings"
2."Lighting"
3."Triple turn signal"

Controls
69Reference
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Mobility
Increasing speed
Briefly press the lever, arrow 1, until the desired
speed is reached.
Each time the lever is pressed briefly, the speed
is increased by approx. 1 mph/1 km/h.
Accelerating using the lever
Press the lever, arrow 1, until the desired speed
is reached.
The vehicle accelerates without pressure on
the accelerator pedal. The system stores and
maintains the speed.
Decreasing speed
Repeatedly pull the lever, arrow2, until the
desired speed is reached.
The functions here are the same as for increas-
ing the speed or accelerating, except that the
speed will be decreased.
Deactivating cruise control
Push the lever briefly upwards or downwards,
arrow3.
In addition, the system is automatically deacti-
vated:
>When the brakes are applied.
>When the clutch of the manual transmission
is engaged or the transmission is shifted
into neutral.
>When the automatic transmission selector
lever is moved into the neutral position N.
>When the selector lever of the Sports auto-
matic transmission with double clutch is
moved into the neutral position N.
>When the vehicle travels faster or slower
than the set speed for an extended period,
e.g. when the accelerator is depressed.
>When DTC is activated or DSC is deacti-
vated.
>When DSC is intervening
Resuming a previously stored speed
Press the button, arrow4.
The last stored speed is resumed and main-
tained.
The stored speed is briefly displayed in the
instrument cluster.
The stored speed is cleared when the ignition is
switched off.
Display in the instrument cluster
When the speed at which the vehicle is traveling
is stored or when a stored speed is called up,
the speed is briefly displayed in the instrument
cluster.

Controls
75Reference
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Mobility
Possible displays
1Button for selecting functions
2Service requirements
3Engine oil
4Roadworthiness test
*
5Front brake pads6Rear brake pads
7Brake fluid
The sequence of displayed service items may
vary. The data for the next service appointment
is shown first.
More information
Detailed information on service
requirements
You can call up additional information on the
maintenance regimen on the Control Display.
1."Vehicle Info"
2."Vehicle status"
3."Service required"Required maintenance procedures and legally
mandated inspections are displayed.
You can request more detailed information on
every entry:
Select the entry and press the controller.
To exit from the menu:
Move the controller to the left.
Symbols
No service is currently required.
The deadline for service or a legally man-
dated inspection is approaching. Please
schedule a service appointment.
The service deadline has already passed.

Controls
83Reference
At a glance
Driving tips
Communications
Navigation
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Mobility
signal. Therefore, always drive cautiously; oth-
erwise, there is a risk of personal injury or prop-
erty damage.<
Driving stability control
systems
Your BMW has a number of systems that help
to maintain the vehicle's stability even in
adverse driving conditions.
Antilock Brake System ABS
ABS prevents locking of the wheels during
braking. Safe steering response is maintained
even during full braking. Active safety is thus
increased.
The ABS is operational every time you start the
engine. Braking safely, refer to page118.
Electronic brake-force distribution
EBV
The system controls the brake pressure in the
rear wheels to ensure stable braking behavior.
Dynamic Brake Control DBC
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost and thus helps to achieve the short-
est possible braking distance during full brak-
ing. This system exploits all of the benefits pro-
vided by ABS.
Do not reduce the pressure on the brake for the
duration of the full braking application.
Dynamic Stability Control DSC
DSC prevents the driving wheels from losing
traction when you pull away from rest or accel-
erate. The system also recognizes unstable
driving conditions, for example if the rear of the
car is about to swerve or if momentum is acting
at an angle past the front wheels. In these
cases, DSC helps the vehicle maintain a safe
course within physical limits by reducing engine
output and through braking actions at the indi-
vidual wheels.The laws of physics cannot be repealed,
even with DSC. An appropriate driving
style always remains the responsibility of the
driver. Therefore, do not reduce the additional
s a f e t y m a r g i n a g a i n b y t a k i n g r i s k s , a s t h i s c o u l d
result in an accident.<
Deactivating DSC
Press the button for at least 3 seconds until the
indicator lamp for DSC OFF lights up and DSC
OFF is displayed in the instrument panel.
Dynamic Traction Control DTC and DSC have
been simultaneously deactivated. Stabilizing
and drive-output promoting actions are no
longer executed.
In the same way as with a differential interlock
*,
even if DSC is deactivated, brake actions are
still performed on the rear axle to enhance drive
output if the drive wheels experience a signifi-
cant loss of traction.
To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC
Press the button again; the indicator lamp in the
instrument panel goes out.
For better control
If the indicator lamp flashes: the DSC
controls the driving and braking forces.
If the indicator lamp lights up: DSC and
DTC have failed.
The indicator lamp lights up and
DSC OFF is displayed in the instrument
panel: DSC is deactivated.

Technology for driving comfort and safety
84
Dynamic Traction Control DTC
DTC is a version of DSC in which the drive out-
put is optimized for particular road conditions,
e.g. unplowed snow-covered roads. The sys-
tem assures the maximal drive output, but with
reduced driving stability. It is therefore neces-
sary to drive with appropriate caution.
You may find it useful to briefly activate DTC
under the following special circumstances:
>When driving uphill on snow-covered roads,
in slush or on unplowed, snow-covered
roads
>When rocking a stuck vehicle free or start-
ing off in deep snow or on loose ground
>When driving with snow chains
Activating DTC
Press the button; the indicator lamp for DSC
OFF lights up and TRACTION is displayed in
the instrument panel.
For better control
If the indicator lamp flashes: DTC con-
trols the driving and braking forces.
If the indicator lamp lights up: DSC and
DTC have failed.
The indicator lamp lights up and TRAC-
TION is displayed in the instrument
panel: DTC is activated.
Deactivating DTC
Press the button again; the indicator lamp in the
instrument panel goes out.
Drive-off assistant
The drive-off assistant enables you to drive off
smoothly on uphill gradients. It is not necessary
to use the parking brake for this.
1.Hold the car in place by depressing the
brake.
2.Release the brake and drive off without
delay.
The drive-off assistant holds the car in
place for approx. 2 seconds after the
brake is released. Drive off without delay after
releasing the brake. Otherwise, the drive-off
assistant will no longer hold the car in place
after approx. 2 seconds and the car will start to
roll backwards.<
Flat Tire Monitor FTM*
The concept
The system does not measure the actual infla-
tion pressure in the tires.
The system detects a pressure loss in a tire by
comparing the rotational speeds of the individ-
ual wheels while moving.
In the event of a pressure loss, the diameter and
therefore the rotational speed of the corre-
sponding wheel change. This is detected and
reported as a flat tire.
Functional requirement
The system must have been initialized while the
tire inflation pressure was correct; otherwise,
reliable signaling of a flat tire is not ensured.
Each time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed,
reinitialize the system.
System limitations
Sudden serious tire damage caused by
external influences cannot be indicated in
advance.<
The system will not detect a natural, uniform
pressure loss in all four tires. Therefore, check
the tire inflation pressure regularly.