2010 BMW 1 SERIES ECU

128i
135iOwner's Manual for Vehicle
Congratulations, and thank you for choosing a BMW.
Thorough familiarity with your vehicle will provide you with
enhanced control and security when you drive it. We therefore
have this request:
Please take the time to read this Owner's Manual and familiarize
yourself with the information that we have compiled for you
before starting off in your new vehicle. It contains important data
and instructions intended to assist you in gaining maximum use
and satisfaction from your BMW's unique range of technical fea-
tures. The manual also contains information on maintenance
designed to enhance operating safety and contribute to main-
taining the value of your BMW throughout an extended service
life.
This manual is supplemented by a Service and Warranty Informa-
tion Booklet for US models or a Warranty and Service Guide
Booklet for Canadian models.
We wish you an enjoyable driving experience.
BMW AG

Transporting children safely
44
Transporting children safely
The right place for children
Do not leave children unattended in the
vehicle; otherwise, they could endanger
themselves and/or other persons by opening
the doors, for example.<
Children always in the rear
Accident research has shown that the safest
place for children is on the rear seat.
Children under the age of 13 or smaller
than 5 ft/150 cm may be transported only
in the rear in suitable child restraint systems
appropriate for their age, weight and size. Oth-
erwise, there is an increased risk of injury in the
event of an accident.<
Children 13 years of age or older must be buck-
led in with a safety belt as soon as there no
longer is any child restraint system that is
appropriate for their age, size and weight.
Exception for front passenger seat
Should it be necessary to use a child
restraint system on the front passenger
seat, the front and side airbags for the front pas-
senger must be deactivated. Otherwise, a child
traveling on that seat will face a significant risk
of injury if the airbags are triggered off, even
with a child restraint system.<
For more information on automatic deactivation
of the front passenger airbags refer to page71.
Installing child restraint
systems
Observe the child restraint system manu-
facturer's instructions when selecting,
installing and using child restraint systems.
Otherwise, the protective effect may be dimin-
ished. <
Standard child restraint systems are designed
to be secured with a lap belt or with the lap-belt
section of a lap-and-shoulder belt. Incorrectly or improperly installed child restraint systems
can increase the risk of injury to children.
Always follow the installation instructions for
the system with the greatest care.
On the front passenger seat
After installing a child restraint system on
the front passenger seat, make sure that
the front and side airbags for the front passen-
ger are deactivated; otherwise, there is an
increased risk of injury if the airbags deploy.<
Seat position
Before installing a child restraint system, move
the front passenger seat as far back and up as
possible to obtain the best possible position for
the belt. Do not change the seat position after
this.
Backrest width*
The backrest width of the front passenger
seat must be at its widest possible set-
ting. Do not change the setting after installing
the child seat. Otherwise, the child seat's stabil-
ity on the front passenger seat is limited.<
1.Adjust the backrest width to its widest set-
ting, refer to page37.
2.Install the child seat.
Child seat security
The rear safety belts and the front passenger
safety belt can be prevented from being pulled
out in order to fasten child restraint systems.

Reference
At a glance
Controls
Driving tips
Mobility
45
To lock the safety belt
1.Secure the child restraint system with the
belt.
2.Pull the belt strap all the way out.
3.Allow the belt strap to retract and pull it taut
against the child restraint system.
The safety belt is locked.
To unlock the safety belt
1.Open the belt buckle.
2.Remove the child restraint system.
3.Allow the safety belt strap to retract all the
way.
LATCH child restraint fixing
system
LATCH: Lower Anchors and Tethers for CHil-
dren.
To install and use the LATCH child
restraint system, follow the operating and
safety instructions provided by the manufac-
turer of the system; otherwise, the protective
function of the seat may be compromised.<
Mounts for the lower LATCH anchors
Before installing the child seat, pull the belt out
of the area for the child restraint fixing system.
Ensure that both lower LATCH anchors
are correctly engaged and that the child
restraint system is resting firmly against the
backrest; otherwise, the protective function of
the seat may be compromised.<
Coupe: rear seats
The anchor points for the lower LATCH
anchors are located behind the labeled protec-
tive caps.
Convertible: rear seats
The anchor points for the lower LATCH
anchors are located at the positions indicated
by arrows, in the gap between the seat and the
backrest.
Upper LATCH retaining strap
Convertible
For Canadian Customers Only.
The following statement is required by Trans-
port Canada.
This vehicle is not equipped with user-ready
tether anchorages. As such neither a child
restraint system, nor a booster cushion, requir-
ing the use of a tether strap can be properly
secured in the vehicle.
Coupe
Use the top tether anchors to secure child
restraint systems only; otherwise, the
anchors could be damaged.<

Transporting children safely
46 For child restraint systems with tether straps
there are two additional anchors, see arrows.
Placement of the tether strap
Coupe
Make sure the upper retaining strap does
not run over sharp edges and is not
twisted as it passes to the top anchor. Other-
wise, the strap will not properly secure the child
restraint system in the event of an accident.<
1Direction of travel
2Head restraint
3Hook for upper retaining strap
4Anchor
5Rear window shelf
6Seat backrest
7Upper retaining strap of child restraint sys-
tem
If necessary, fold the head restraints upward
before use.
1.Push the head restraint upward.
2.Guide the upper retaining strap between
the head restraint holders.
3.Use the hook to clip the retaining strap to
the anchor.4.Push the head restraint into its lowermost
position.
5.Pull the retaining strap taut.

Reference
At a glance
Controls
Driving tips
Mobility
51
Steptronic changes gear. M1 through M6 are
displayed on the instrument cluster.
Upshifts and downshifts are executed only
when they will result in a plausible combination
of engine and vehicle speed; thus, for example,
a downshift that would cause the engine to
overrev will not be executed by the system. The
gear selected is briefly displayed in the instru-
ment cluster, followed by the gear actually in
use.
Shifting gears via shift paddles* on the
steering wheel
The shift paddles allow you to shift gears
quickly since both hands can remain on the
steering wheel.
>When you use the shift paddles on the
steering wheel to shift gears in automatic
mode, the transmission switches to manual
mode.
>If you do not accelerate or shift gears using
the shift paddles for a certain amount of
time, the transmission switches back to
automatic mode.
If the selector lever is in the M/S gear
plane, manual mode remains active.<
>To shift up: pull one of the shift paddles.
>To shift down: press one of the shift pad-
dles.
Upshifts and downshifts are executed only
when they will result in a plausible combination
of engine and vehicle speed; thus, for example,
a downshift that would cause the engine to
overrev will not be executed by the system. The
gear selected is briefly displayed in the instru-
ment cluster, followed by the gear actually in
use.
Overriding selector lever lock
Should the selector lever refuse to move out of
position P even though the ignition is switched
on, the brake is depressed and the button on
the selector lever is pressed, the selector lever
lock can be overridden:
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 screwdriver from the onboard
vehicle tool kit, refer to page124, press the
red lever, see arrow, while moving the
selector lever to the desired position.
Turn signals/
headlamp flasher
1High beams
2Headlamp flasher
3Turn signals
Using turn signals
Press the lever beyond the resistance point.
To turn off manually, press the lever to the
resistance point.

Reference
At a glance
Controls
Driving tips
Mobility
63
indicates that Check Control messages have
been stored. These Check Control messages
can be viewed again later, refer to page63.
What to do in case of a malfunction
The meaning of each lamp in the event of a mal-
function and tips on how to respond are listed
starting on page134.
Hiding Check Control messages
Press the button on the turn indicator lever.
>Some Check Control messages are dis-
played continuously and remain visible until
the malfunction has been rectified. If several
malfunctions occur at once, the messages
are displayed consecutively.
These messages can be hidden for approx.
8 seconds. After this, they are displayed
again automatically.
>Other Check Control messages are hidden
automatically after approx. 20 seconds.
They are stored and can be displayed again
later.
Displaying stored Check Control
messages
1.Push button 1 in the turn indicator lever up
or down repeatedly until the appropriate
symbol appears in the display, accompa-
nied by the words "CHECK".
2.Press button 2.
"CHECK OK" appears if there are no Check
Control messages. If a Check Control mes-
sage has been stored, the corresponding
lamp comes on.
3.Push button 1 to check for other messages.
4.Press button 2.
The display again shows the outside tem-
perature and the time.

Reference
At a glance
Controls
Driving tips
Mobility
65
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 page98.
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
safety margin again by taking risks, as this could
result in an accident.<
Deactivating DSC
Press the button for at least 3 seconds; the indi-
cator lamps for DSC in the instrument cluster
light up. 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 lamps for
DSC in the instrument cluster go out.
For better control
If the indicator lamp flashes:
DSC is regulating the drive and braking
forces.
If the indicator lamps are on:
DSC is deactivated.
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:

Reference
At a glance
Controls
Driving tips
Mobility
71
Airbags
The following airbags are located under the
marked covers:
1Front airbags
2Coupe: head airbags
3Side airbags in the seat backrests
4Convertible: knee airbags
Protective action
Observe the adjustment instructions on
page35 to ensure the best possible per-
sonal protection.<
The front airbags help protect the driver and
front passenger by responding to frontal
impacts in which safety belts alone cannot pro-
vide adequate restraint. When needed, the
head and side airbags help provide protection in
the event of side impact. The relevant side air-
bag supports the side upper body area. The
head air bag supports the head.
The airbags have been designed to not be trig-
gered in every collision situation, e.g. not in
minor accidents or rear-end collisions.
Do not apply adhesive materials to the
cover panels of the airbags, cover them or
modify them in any other way.
Keep the dashboard and window on the front
passenger side clear, i.e., do not cover with
adhesive labels or coverings, and do not attach
holders such as for navigation instruments and
mobile phones.
Do not attach seat covers, cushions or other
objects not specifically approved for seats with
integral side airbags to the front seats. Do not
hang items of clothing such as coats or jackets
over the backrests. Do not attempt to remove the airbag retention system from the vehicle. Do
not modify the individual components of the
system or its wiring in any way. This includes
the upholstered covers on the steering wheel,
instrument panel, seats and roof posts, as well
as the sides of the roof lining. Do not attempt to
remove or dismantle the steering wheel.
Do not touch the individual components imme-
diately after the system has been triggered,
because there is a danger of burns.
In the event of malfunctions, deactivation or
triggering of the airbag restraint system, have
the testing, repair, removal and disposal of air-
bag generators executed only by a BMW center
or a workshop that works according to repair
procedures of BMW with correspondingly
trained personnel and that has the required
explosives licenses. Unprofessional attempts to
work on the system could lead to failure in an
emergency or to undesired airbag activation,
either of which could result in personal injury.<
Warning notices and information about the air-
bags can also be found on the sun visors.
Automatic deactivation of the front
passenger airbags
An analysis of the impression in the front pas-
senger seat cushion determines whether and
how the seat is occupied. The front and side air-
bags for the front passenger are activated or
deactivated by the system accordingly.
The indicator lamp above the interior
rearview mirror shows the current status
of the front passenger airbags, deactivated or
activated, refer to Status of front passenger air-
bags below.<