2008 BMW 335XI ECU

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.

Practical interior accessories
114 The lashing eyes in the cargo bay provide you
with a way to attach cargo bay nets
* or draw
straps for securing suitcases and luggage, refer
to page124.
Sports Wagon:
Cargo bay
Roll-up cover
Pull out the cover and hook it into the retaining
fixtures.
Do not place objects on the cover, other-
wise they could endanger the car's occu-
pants, e.g. in the case of braking or sudden
swerving.
Do not let the cover retract, otherwise it could
be damaged.<
The roll-up cover is raised when the rear
window or tailgate is opened
*. Before
closing the rear window or tailgate, press the
roll-up cover downward until it engages.<
Expanding the cargo bay
The rear seat backrest is divided. You can fold
down either division in order to expand the
cargo bay.Reach into the recess and pull forwards.
When folding the backrest back up, make
sure that the catch engages properly. If
you cannot see a red warning area in the recess,
the catch is properly engaged. Otherwise,
cargo can be thrown around inside the passen-
ger compartment and endanger the car's occu-
pants, e.g. in the case of braking or sudden
swerving.<
Observe the instructions concerning the
safety belt on page43 to ensure the best
possible personal protection.<
Partition net
Do not let the partition net retract, other-
wise there is a risk of danger and the par-
tition net could be damaged.<
Use the loop strap to pull the partition net out of
the casing. Grip the bar on both ends and insert
it into the retaining fixtures, arrow 1. This can
best be done from the rear seat.
When you no longer require the partition net,
grip both ends of the bar and take it out of the
retaining fixtures, arrow 2. Let the partition net
slide into the casing slowly.

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With cargo bay expanded
1.Fold down both rear seat backrests, refer to
Expanding the cargo bay.
2.Use the buttons to unlatch the casing on
both sides, arrow 1.
3.Pull the casing out backwards, arrow 2,
without tilting it.
4.Slide the casing into the guides on the
backs of the seat backrests.
5.Carefully pull out the partition net and insert
it into the front retaining fixtures, refer to
Partition net above. This can best be done
from the front seat.
Follow the same steps in reverse order to return
the partition net and seats to their original posi-
tions. Finally, slide the casing into both retaining
fixtures on the sides until it engages. Tug on the
casing to check if it is properly locked in place.
Storage compartments inside
the cargo bay
Sedan
Depending on your vehicle's equipment, the
following storage spaces can be found in the
cargo bay:>Left storage compartment, e.g. for storing a
box of cleaning tissues or up to 12 CD jack-
ets, depending on vehicle equipment ver-
sion
>Net
* for securing smaller objects, to be
attached to the fixtures on the floor panel
>Hooks for hanging up, e.g., shopping bags
or tote bags
>Rubber strap on the left trim panel for
securing small objects such as a folding
umbrella
>Net for small objects on the right trim panel
of the cargo bay
>Retaining straps next to the rear lashing
eyes, e.g. for securing an umbrella
>Folding, removable box
* under the floor
panel, e.g. for wet or dirty items
>Stowage compartment under the floor
panel
>Insertable dividers
* and removable storage
tray for the storage compartment under the
floor panel
>Drawer for storing small items. Pull the han-
dle firmly to release the drawer. If neces-
sary, you can pull out the drawer entirely,
refer to the information below
Do not drive or close the luggage com-
partment lid while the drawer is pulled
out.
On uphill gradients, release the drawer with
caution, otherwise it could slide out on its own
and cause injury.
Do not exceed a maximum load of 11 lbs/5 kg
for the drawer, otherwise damage could
result.<
Removing the drawer
1.Push the drawer all the way in.
2.Turn the catches on the left and right all the
way out.

Practical interior accessories
116 3.Remove the drawer by pulling it down and
backwards.
Reinserting the drawer
1.Hook the guides of the drawer into the front
of the yellow guide aids on the bottom of the
cargo bay.
2.Insert the catches into the mounts on the
bottom of the cargo bay.
3.Turn the catches on the left and right all the
way in.
Sports Wagon
The following storage spaces can be found in
the cargo bay:
>Umbrella holder on the bottom of the parti-
tion net casing
>Rubber strap on the left and right trim panel
for securing small objects such as a folding
umbrella
>Hooks for hanging up shopping bags or tote
bags, for example, on the left and right-hand
sides of the cargo bay
>Net for small objects on the right trim panel
of the cargo bay
>Stowage compartment under the floor
panelDepending on your vehicle's equipment, other
storage spaces can be found in the cargo bay:
>Net
* for securing smaller objects, to be
attached to the fixtures on the floor panel
>Net
* on the left side trim of the cargo bay
instead of the rubber strap
>Reversible cargo area floor panel with inte-
grated plastic cover
* for cargo bay or
bumper
>Folding, removable box
* under the floor
panel, e.g. for wet or dirty items
>Insertable dividers
* and removable storage
tray for the storage compartment under the
floor panel
Folding up the floor panel
Do not exceed the maximum permissible
load of 55 lbs/25 kg for the storage com-
partment under the floor panel, otherwise dam-
age could result.<
Sedan
Press the floor panel against the ceiling of the
cargo bay; a locking device holds the floor panel
in place. To detach the floor panel, pull it out of
the locking device.
Equipment version with drawer:
Take the retaining strap on the right-hand side
of the drawer out of the bracket and use it to fix
the floor panel in place.
Sports Wagon
Fold up the floor panel and take it out or lean it
forward.

Controls
117Reference
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Driving tips
Communications
Navigation
Entertainment
Mobility
Lashing eyes
You will find lashing eyelets in the cargo bay for
securing luggage items with nets or tensioning
straps, refer to page124.
Ski bag*
The ski bag is designed for safe, clean transport
of up to 4 pairs of standard skis or up to
2snowboards.
With the ski bag you can stow skis with a length
of up to 6ft 10in/2.10m. When skis of 6ft 10in/
2.10 m length are loaded, the overall capacity of
the ski bag is reduced due to its tapered design.
Loading
1.Fold down the center armrest.
2.Press the button, reach into the recess and
fold down the cover.
3.Open the Velcro fastener, spread the ski
bag between the front seats and insert the
skis or snowboards.
The zip fastener makes objects in the ski
bag easier to reach.
4.Insert the latch plate of the ski bag's retain-
ing strap in the center belt buckle.Only place clean skis in the ski bag. Wrap sharp
edges to prevent damage.
Securing cargo
After loading, secure the ski bag and its con-
tents. Tighten the retaining strap on the ten-
sioning buckle for this purpose.
Secure the ski bag in the manner
described, otherwise it could endanger
the car's occupants, e.g. in case of heavy brak-
ing or sudden swerving.<
To store the ski bag, perform the steps
described for loading in reverse order.
Removing the ski bag
The ski bag can be completely removed, e.g. for
faster drying or to allow you to use other inserts.
1.Fold down the center panel in the rear seat
backrest.
2.Pull the handle, arrow1.
3.Pull out the insert, arrow 2.
For more information on the various
inserts available, contact your BMW cen-
ter.<

Driving tips
123Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
Sports Wagon: rear window wiper
Driving through an automatic car wash can
result in damage to the rear window wiper. If
necessary, ask the operator of the car wash
about protective measures you should take.
With convenient access and automatic
transmission
Insert the remote control into the ignition
switch.
The engine can be switched off when the selec-
tor lever is in position N. Refer also to page37.
Cargo loading
To avoid loading the tires beyond their
approved carrying capacity, never over-
load the vehicle. Overloading can lead to over-
heating and increases the rate at which damage
develops inside the tires. This can ultimately
result in a sudden blow-out.<
Make sure that no liquids are spilled or
leak from their containers in the cargo
bay, as this could result in damage to the vehi-
cle.<
Determining loading limit
1.Locate the following statement on your
vehicle's placard
*:
The combined weight of occupants
and cargo should never exceed
XXX kg or YYY lbs. Otherwise, overloading
can result in damage to the vehicle and
unstable driving conditions.<
2.Determine the combined weight of the
driver and passengers that will be riding in
your vehicle.3.Subtract the combined weight of the driver
and passengers from XXX kilograms or YYY
pounds.
4.The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the YYY amount equals
1,400 lbs. and there will be five 150-lb. pas-
sengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is
650 lbs:
1,400 lbs. minus 750 lbs. = 650 lbs.
5.Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated
in step 4.
6.If your vehicle will be towing a trailer, part of
the load from your trailer will be transferred
to your vehicle. Consult the manual for
transporting a trailer to determine how this
may reduce the available cargo and luggage
load capacity of your vehicle.
Load
The permissible load is the total of the weight of
occupants and cargo/luggage. The greater the
weight of the occupants, the less cargo/lug-
gage can be transported.
Stowing cargo
>Position heavy objects as low and as far for-
ward as possible, ideally directly behind the
respective seat backrests.
>Cover sharp edges and corners.
>For very heavy cargo when the rear seat is
not occupied, secure each safety belt in the
opposite buckle.

Things to remember when driving
124
Sedan
Sports Wagon
>Use the partition net to protect passengers,
refer to page114. Make sure that objects
cannot penetrate the partition net.
>Do not stack cargo higher than the upper
edge of the backrests.
>Place protective material around any
objects which could bump against the rear
window while the vehicle is in motion.
Securing cargo
>Secure smaller and lighter items using
retaining straps, a cargo bay net
* or draw
straps
*.
>Heavy-duty cargo straps
* for securing
larger and heavier objects are available at
your BMW center. Four lashing eyes are provided for attaching the cargo straps.
Two are located on the cargo bay
sidewalls1, two more are on the rear cargo
bay panel2.
Please comply with the information sup-
plied with the cargo straps.
Always position and secure the cargo as
described above, so that it cannot endan-
ger the car's occupants, for example if sudden
braking or swerving is necessary.
Never exceed either the approved gross vehicle
weight or either of the approved axle loads, refer
to page245, as excessive loads can pose a
safety hazard, and may also place you in viola-
tion of traffic safety laws.
Heavy or hard objects should not be carried
loose inside the car, since they could be thrown
around, for example as a result of heavy braking,
sudden swerves, etc., and endanger the occu-
pants.<
Roof-mounted luggage rack*
A special rack system is available as an option
f o r y o u r B M W . C o m p l y w i t h t h e d i r e c t i o n s g i v e n
in the installation instructions.
Mounting points
The mounting points are located in the roof/
along the roof rails
*.
Loading roof-mounted luggage rack
Because roof racks raise the vehicle's center of
gravity when loaded, they have a major effect on
vehicle handling and steering response.
You should therefore always remember not to
exceed the approved roof load capacity, the