2009 BMW 335I CONVERTIBLE ECU

328i
328i xDrive
335i
335i xDriveOwner'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

iDrive
20 1.Move the controller to the right repeatedly
until the split screen content is selected.
2.Select the display.
Programmable memory keys
Certain iDrive functions can be stored on the
programmable memory keys and called up
directly, e.g. radio stations, navigation destina-
tions, phone numbers and entry points into the
menu.
Storing functions
1.Highlight the function via the iDrive.
2. ... Press the desired key for
longer than two seconds.
Example for programmable memory
keys
Switch the voice instructions for the navigation
on/off.
1."Navigation"
2."Map"
3.Select the symbol using the controller.
4. ... Press the desired key for
longer than two seconds.
Executing a function
... Press the button.
The function is executed immediately. This
means, for example, that the number is dialed
when a phone number is selected.
Displaying memory key assignments
Touch the button with a finger. Do not wear
gloves or use objects.
Displaying brief information
... Touch the button.
The key assignment is displayed at the top
edge of the screen.
Displaying detailed information
... Press the button for an
extended period.

Controls
45Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
transporting anyone on that seat. Otherwise,
the passenger will be without protection from
the head restraint.<
Front active head restraints
In a rear collision of a sufficient strength, the
active head restraint reduces the distance to
the head.
Do not use seat or head restraint covers
that could impair the function of the active
head restraint. Otherwise, the protective func-
tion of the active head restraint will not be
ensured and its full potential in reducing the risk
of injury in the event of a rear collision may not
be realized.
In the event of malfunctions, deactivation or
triggering of the active head restraints, have the
testing, repair and removal executed only by a
BMW center or a workshop that works accord-
ing to repair procedures of BMW with corre-
spondingly 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 per-
sonal injury.<
For technical reasons, the head restraint
cannot be removed.<
Front seats
Coupe: height adjustment
>To raise: pull up.
>To lower: press the button, arrow1, and
slide the head restraint down.
Convertible: height adjustment
>To raise: press the button upward.
>To lower: press the button downward.
Convertible: adjusting the distance to
the back of the head
>Forward: pull.
>Back: press the button and push the head
cushion toward the rear.
Do not insert objects behind the head
cushion; otherwise, the head restraint
may not function properly.<
Coupe: rear seats
Height adjustment
>To raise: pull up.

Transporting children safely
52
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 page90.
Installing child-restraint
systems
Observe the child-restraint system man-
ufacturer'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.<
Backrest width*
The backrest width of the front passen-
ger's seat must be at its widest possible
setting. Do not change the setting after install-
ing the child seat. Otherwise the child seat's
stability on the front passenger's seat is lim-
ited.<
1.Adjust the backrest width to its widest set-
ting, refer to page44.
2.Install the child seat.
Child seat security
The rear safety belts and the front passenger's
safety belt can be prevented from being pulled
out in order to fasten child-restraint systems.
To lock the safety belt
1.Secure the child-restraint system with the
belt.
2.Pull the belt strap all the way out.

Controls
53Reference
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Mobility
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.<
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.<
The anchor points for the lower LATCH
anchors are located behind the labeled protec-
tive caps.
Coupe: child-restraint system with
tether strap
Use the top tether anchors to secure
child-restraint systems only, otherwise
the anchors could be damaged. there are two additional anchors, see arrows.
Coupe: placement of the tether strap
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 anchors 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.

Driving
58
Changing selector lever positions
>With the ignition switched on or the engine
running, the selector lever can be moved
out of position P: interlock.
>Before moving the lever away from P or N
with the vehicle stationary, first depress the
brake; otherwise the selector lever will
refuse to move: shiftlock.
To prevent the vehicle from creeping
after you select a driving position,
depress the brake until you are ready to
start.<
A lock prevents you from inadvertently engag-
ing selector lever positions R and P. To cancel
the lock, press the button on the front of the
selector lever, see arrow.
P Park
Select this only when the vehicle is stationary.
The rear wheels are locked.
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.
D Drive, automatic position
Position for normal vehicle operation. All for-
ward gears are selected automatically.
Under normal operating conditions, fuel con-
sumption is lowest when you are driving in posi-
tion D.
Kick-down
Kick-down enables you to achieve maximum
performance.
Press the accelerator pedal beyond the full-
throttle resistance point.
Sport program and manual operation
M/S
Move selector lever from position D toward the
left into the M/S shifting slot:
The sport program is activated and DS is dis-
played in the instrument cluster. This position is
recommended for a performance-oriented driv-
ing style.
To use the automatic mode again, move the
selector lever to the right into position D.
Shifting gears via the selector lever
When you press the selector lever forwards or
backwards, the manual mode is activated and
Steptronic changes gear. M1 through M6 are
displayed in 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.

Controls
59Reference
At a glance
Driving tips
Communications
Navigation
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Mobility
>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 although 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
tool kit, refer to page217, press the red
lever 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.
Unusually rapid flashing of the indicator
lamp indicates that a turn signal indicator
has failed.<
Indicating a turn briefly
Press the lever as far as the resistance point for
as long as you wish to indicate a turn.

Controls
83Reference
At a glance
Driving tips
Communications
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Mobility
can drown out the PDC signal. Therefore,
always drive cautiously, otherwise there is a risk
of personal injury or property 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
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; 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.
328i, 335i: 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 experi-
ence a significant loss of traction.
To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC
Press the button again; the indicator lamps in
the instrument cluster go out.
For better control
If the indicator lamp flashes:
DSC controls the drive forces and
brake 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