ECU BMW 335XI SEDAN 2008 E90 Owner's Manual

323i
328i
328xi
335i
335xiOwner'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

At a glance
19Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Operating principle at a glance
The following is a general description of opera-
tions using iDrive.For an exemplary step-by-step application refer
to Setting the time, page79.
1Selecting a menu item:
>Turn the controller; the highlight marker
moves
>Menu items in white can be selected by
highlighting them
2Activating a menu item:
>Press the controller
>New menu items are displayed or the
function is executed
3Selecting a menu item: refer to14Switching between fields:
>Briefly move the controller to the left,
right, forward, or backward
>Release the controller
>The active field is brighter in color
5Adjusting settings:
>Turn the controller
>Graphic display, numerical value or text
displays can be changed
>Confirm by changing the field

At a glance
21Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Switching assistance window on/off
1.Move the controller to the right to change to
the assistance window and press the con-
troller.
2.Select "Assist. window off" and press the
controller.
To turn back on, switch to the assistance win-
dow and press the controller.
Switching Control Display
off/on
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Display off" and press the control-
ler.
Press the controller to switch on.
Programmable memory keys
Using the programmable memory keys, you can
store and execute certain iDrive functions:
>Navigation destinations
*
>Entertainment:
>Radio stations
>CD
>CD compartment of CD changer
>AUX
>Telephone: phone numbers
The assignment of the programmable memory
keys is stored for the remote control currently in
use.
Storing functions
Navigation destinations*
1.Select the navigation destination, e.g. in the
destination list or address book.
2. ... Press the key longer than
2seconds.
Special features:
>If destination guidance and the map view
have been started, the current destination is
stored.
>If the destination is entered via map, the
coordinates in the crosshairs are stored, not
the current destination.
Telephone, phone numbers
1.Enter the phone number or select the num-
ber from a list of stored phone numbers, e.g.
the A-Z list.
2. ... Press the key longer than
2seconds.
If the phone number is associated with a name,
the name is also stored.
Entertainment
The item stored in the Entertainment menu is
the source that is playing at the time of storage,
e.g. a radio station, irrespective of what was
selected on the Control Display.
1.Select the desired function, e.g. radio sta-
tion or CD.
2. ... Press the key longer than
2seconds.

iDrive
22 If the car is equipped with two drives and a
CD with compressed audio files is played,
the current track is stored.<
Executing a function
... Press the key.
The function is executed immediately. This
means that, for example, if a phone number is
selected, the connection is established, or if a
navigation destination is called up, destination
guidance is started.
Displaying memory key assignments
You can have the assignment of a memory key
displayed by touching the key with your finger.
Please do not wear gloves when doing so.
Touching the keys with an object such as a pen
will not work.
Displaying brief information
... Touch the key.
The key assignment is displayed.
Navigation destination
Entertainment source
Telephone, phone number
Not assigned
Displaying detailed information
... Touch the key for a longer
period.
Clearing key assignments
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.3.Select "Settings" and press the controller.
4.Select "Vehicle / Tires" and press the con-
troller.
5.Select "Programmable Memory Keys" and
press the controller.
6.Select "Delete assignment of all memory
keys" and press the controller.
7.Select "Yes" and press the controller.

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.<
The rear center seat is not suitable for installing
child-restraint systems for all age groups,
approved for the age group in question.
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 page94.
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. 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 page45.
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.

Controls
53Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
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.<
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.<
Rear seats with through-loading
system
The anchor points for the lower LATCH
anchors are located behind the labeled protec-
tive caps.
Rear seats without through-loading
system
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.
Child-restraint system with tether
strap
Use the top tether anchors to secure
child-restraint systems only, otherwise
the anchors could be damaged.<

Transporting children safely
54
Sedan
There are three additional anchors for child-
restraint systems with tether straps, see
arrows.
Sports Wagon
There are three additional anchors under a
cover for child-restraint systems with tether
straps, see arrows.
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.<
Sedan
Sports Wagon
1Direction of travel
2Head restraint
3Hook for upper retaining strap
4Anchor
5Rear window shelf/cargo bay floor
6Seat backrest
7Upper retaining strap of child-restraint sys-
tem
Fold the anchors and, if necessary, the head
restraints
* upward before use.
1.Push the head restraint upward.
2.Guide the upper retaining strap between
the head restraint holders.

Driving
60 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 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 page228, 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.

Controls
87Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
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.
DTC Dynamic Traction Control
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 lamps for DTC in
the instrument cluster come on.
For better control
If the indicator lamp flashes:
DTC controls the drive forces and
brake forces.
If the indicator lamps are on:
DTC has been activated.
Deactivating DTC
Press the button again; the DTC indicator
lamps in the instrument cluster go out.
xDrive*
xDrive is your BMW's four-wheel-drive system.
The combined efforts of xDrive and DSC help to
further optimize traction and driving dynamics.
The xDrive four-wheel-drive system distributes
driving power variably to the front and rear axles
depending on the driving situation and road
conditions.
HDC Hill Descent Control*
HDC is a downhill driving assistant that controls
your speed on steep downhill gradients and
makes it even easier to control your BMW's
handling under these conditions. The vehicle

Technology for driving comfort and safety
94
Airbags
The following airbags are located under the
marked covers:
1Front airbags
2Head airbags, front and rear
3Side airbags in the seat backrests
Protective action
Observe the adjustment instructions on
page43 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. Do not attach
seat covers, cushions or other objects not spe-
cifically approved for seats with integral side air-
bags to the front seats. Do not hang items of
clothing such as coats or jackets over the back-
rests. Do not attempt to remove the airbag
retention system from the vehicle. Do not mod-
ify the individual components of the system or
its wiring in any way. This includes the uphol-
stered 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.
Before transporting a child on the front
passenger seat, read the safety precau-
tions and handling instructions under Trans-
porting children safely, refer to page52.