steering BMW 4.8I 2008 Owner's Manual

Technology for comfort, convenience and safety
96 A message like this is displayed in the following
situations:
>In case of a malfunction:
Have the system checked
>If a wheel without TPM electronics is
mounted, e.g. a compact wheel
*
>If TPM is temporarily interfered with by
other systems or devices which use the
same radio frequency
Explanation according to the NHTSA/
FMVSS 138 Tire Pressure Monitoring
Systems
Each tire, including the spare*, should be
checked monthly when cold and inflated to the
inflation pressure recommended by the vehicle
manufacturer on the vehicle placard or tire infla-
tion pressure label. If your vehicle has tires of a
different size than the size indicated on the
vehicle placard or tire inflation pressure label,
you should determine the proper tire inflation
pressure for those tires. As an added safety fea-
ture, your vehicle has been equipped with a tire
pressure monitoring system, TPMS, that illumi-
nates a low tire pressure telltale when one or
more of your tires are significantly under-
inflated. Accordingly, when the low tire pres-
sure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a signif-
icantly underinflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability. Please note that the TPMS is not a
substitute for proper tire maintenance, and it is
the driver's responsibility to maintain correct
tire pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
The TPMS malfunction indicator is combined
with the low tire pressure telltale. When the sys-
tem detects a malfunction, the telltale will flash
for approximately one minute and then remain
continuously illuminated. This sequence will
continue upon subsequent vehicle startups as
long as the malfunction exists. When the mal-function indicator is illuminated, the system
may not be able to detect or signal low tire pres-
sure as intended. TPMS malfunctions may
occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.Active steering*
The concept
The active steering actively varies the steering
angle of the front wheels in relation to the steer-
ing wheel movements. In addition, it also varies
the steering force required for steering depend-
ing on the vehicle's speed.
When you are driving in the low road speed
range, e. g. in a town or when parking, the steer-
ing angle increases, i.e. the steering becomes
very direct. In the higher speed range, on the
other hand, the steering angle is reduced more
and more. This improves the handling capability
of your BMW over the entire speed range.
In critical situations, the system can make tar-
geted corrections to the steering angle pro-
vided by the driver and thus stabilize the vehicle
before the driver intervenes.
Malfunction
The warning lamp lights up yellow
and a message is shown on the Con-
trol Display. The active steering is no
longer operational. At low speeds,
greater steering wheel movements are
required, whereas at higher speeds, the vehicle
reacts more sensitively to steering wheel move-
ments. The stability-promoting intervention
can also be deactivated. Proceed cautiously
and drive defensively. Have the system
checked.

Controls
97Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Brake force display
On the left: normal braking.
On the right: heavy braking.
Airbags
The following airbags are located under the
marked covers:
1Front airbags
2Head airbags
3Side airbags
in backrests
Protective action
To ensure that the safety systems con-
tinue to provide optimized protection,
please observe the adjustment instructions on
page42.<
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 are deliberately not triggered in
every impact situation, e. g. less severe acci-
dents 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 attempt to
remove the airbag restraint system from the
vehicle. Do not modify or tamper with either the
wiring or the individual components in the air-
bag system. This category includes the uphol-
stery in the center of the steering wheel, on the
instrument panel, the doors and the roof pillars
along with the sides of the headliner. Do not
attempt to remove or dismantle the steering
wheel. Do not touch the individual components
immediately after the system has been trig-
gered, 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 Sports

Lamps
104
Adaptive Head Light*
The concept
Adaptive Head Light is a variable headlamp
control system that enables better illumination
of the road surface. Depending on the steering
angle and other parameters, the light from the
headlamp follows the course of the road.
In tight curves, e.g. serpentines, or when turn-
ing, one of the two front fog lamps is also
switched on up to a speed of approx. 45 mph/
70 km/h. This provides improved illumination of
the area inside the curve.
Activating Adaptive Head Light
With the ignition switched on, turn the light
switch into the automatic headlamp control
position, refer to page102.
The turning lamps are automatically switched
on depending on the steering angle or the use
of turn signals.
To avoid blinding oncoming traffic, the Adaptive
Head Light directs light towards the front pas-
senger side when the vehicle is at a standstill.
When driving in reverse, both turning lamps are
active.
Malfunction
The LED next to the symbol for automatic head-
lamp control flashes. Adaptive Head Light is
malfunctioning or has failed. Have the system
checked as soon as possible.
High beams/
roadside parking lamps
1High beams
2Headlamp flasher
3Roadside parking lamps
Roadside parking lamps, left or right*
You also enjoy the option of lighting up just one
side of your vehicle when parking.
Switching on
After parking the vehicle, press the lever up or
down beyond the resistance point, arrow 3.
The roadside parking lamps drain the bat-
tery. Do not leave them switched on for
long periods of time, otherwise it may no longer
be possible to start the engine.<
Switching off
Briefly press the lever in the opposite direction
up to the resistance point, arrow 3.

Driving tips
129Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
and smooth driving style reduces fuel con-
sumption.
Avoiding high engine speeds
Driving at a low engine speed reduces fuel con-
sumption and minimizes wear.
Taking advantage of coasting
The flow of fuel is interrupted when coasting.
Switching off engine during longer
stops
Switch off the engine at longer stops such as
traffic signals, railroad crossings, or in traffic
jams. Even having the engine switched off for
approx. 4 seconds results in fuel savings.
Switching off functions currently not
required
Functions such as air conditioning, seat heat-
ing, or rear window defrosting consume a lot of
energy and require additional fuel. Their influ-
ence is particularly pronounced in city traffic
and stop & go operation. For this reason, it is a
good idea to switch these functions off when
they are not really needed.
Having maintenance carried out
Have the vehicle serviced regularly in order to
achieve the optimum economy and service life
of your vehicle. BMW recommends having the
maintenance performed by a BMW Sports
Activity Vehicle Center. Also please pay atten-
tion to the BMW maintenance system, refer to
page245.
General driving notes
Closing liftgate/tailgate
Operate the vehicle only when the tail-
gate and liftgate are completely closed.
Otherwise, exhaust fumes could enter into the
passenger compartment. gate open:
1.Close all windows and the panorama glass
sunroof.
2.Increase the air volume of the automatic
climate control to a high level, refer to
page108.
Hot exhaust system
As in all vehicles, extremely high temper-
atures are generated on the exhaust sys-
tem. Do not remove the heat shields installed
adjacent to it, and never apply undercoating to
them. When driving, standing at idle and while
parking take care to avoid possible contact
between the hot exhaust system and any highly
flammable materials such as hay, leaves, grass,
etc. Such contact could lead to a fire, and with it
the risk of serious property damage as well as
personal injury. Do not touch hot tailpipes, as
otherwise there is a danger of burns.<
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a wedge
of water can form between tires and road sur-
face. This phenomenon is referred to as hydro-
planing, and is characterized by a partial or
complete loss of contact between the tires and
the road surface, ultimately undermining your
ability to steer and brake the vehicle.<
The risk of hydroplaning increases as the tread
depth of the tires decreases, also refer to Mini-
mum tread depth on page238.
Driving through water
Do not drive through water on the road if it
is deeper than 20 in/50 cm, and then only
at walking speed at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Braking safely
Your BMW is equipped with ABS as a standard
feature. In situations that require it, it is best to
brake with full force. Since the vehicle maintains
steering responsiveness, you can still avoid

Things to remember when driving
130 possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.
Do not drive with your foot resting on the
brake pedal. Even light but consistent
pedal pressure can lead to high temperatures,
brake wear and possibly even brake failure.<
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor traffic conditions to
ensure that this maneuver does not endanger
other road users. The heat generated in this
process helps dry the pads and rotors to ensure
that full braking efficiency will then be available
when you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even
light but consistent pressure on the brake pedal
can lead to high temperatures, brake wear and
possibly even brake failure.<
The braking effect of the engine can be further
increased by downshifting in the manual mode
of the automatic transmission, if necessary into
first gear, refer to page65. This prevents an
excessive strain on the brakes.
Do not drive in idle or with the engine
stopped, otherwise there will be no
engine braking action or support of the braking
force and steering.
Never allow floor mats, carpets or any other
objects to protrude into the area of movement
of the pedals and impair their operation.<
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on rotors, while contaminants accumulate on the
brake pads. This occurs because the minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail to
cure.
When vehicle is parked
Condensation forms in the automatic climate
control system during operation, and then exits
under the vehicle. Traces of condensed water
under the vehicle are therefore normal.
Before driving into a car wash
Fold in the exterior mirrors, refer to page51,
otherwise they could be damaged due to the
width of the vehicle.
Release the parking brake, particularly when
you have activated Automatic Hold, refer to
page61.
General information on the care and mainte-
nance of your BMW is contained in the Caring
for your vehicle brochure.
Mixed tires*
Before driving into a car wash, make sure
that the vehicle width is not too large for
the car wash, as otherwise the vehicle and the
car wash could be damaged.<
Rear window wiper
The rear window wiper can be damaged in car
washes. Take appropriate protective measures;
ask the car wash operator if necessary.
With comfort access*
Insert the remote control into the ignition lock.
The engine can be switched off in transmission
position N, also refer to page37.

Things to remember when driving
132 >Cover sharp edges and corners.
>For very heavy cargo when the rear seat is
not occupied, secure each safety belt in the
opposite buckle.
>Do not pile objects higher than the top edge
of the backrest.
>Wrap sharp-edged or pointed objects
which could strike the rear window while
driving.
Securing cargo
>Use the luggage net*, retaining straps*, or
securing straps to hold down small and
lightweight luggage and cargo.
>For larger and heavier pieces, heavy-duty
cargo straps
* are available from your BMW
Sports Activity Vehicle Center. Four lashing
eyes mounted in the cargo bay are used to
secure these heavy-duty cargo straps, refer
to illustration.
>Please observe the special instructions
supplied with the heavy-duty cargo straps.
Position and secure the cargo as
described above, so that it cannot endan-
ger the car's occupants, for example if sudden
braking or evasive maneuvers are necessary.
Use only the lashing eyes to secure heavy-duty
cargo straps, refer to illustration, otherwise the
cargo straps could become detached or the
vehicle could be damaged.
Never exceed either the approved gross vehicle
weight or either of the approved axle loads, refer
to page264, as excessive loads can pose a
safety hazard, and may also place you in viola-
tion of traffic safety laws. You should never transport unsecured heavy or
hard objects in the passenger compartment, as
they could fly around and pose a safety hazard
to the vehicle's occupants during abrupt brak-
ing or evasive maneuvers.<
Roof-mounted luggage rack*
A special rack system is available as an option
for your BMW. Please comply with the precau-
tions included with the installation instructions.
Loading roof-mounted luggage rack
Because roof racks raise the vehicle's center of
gravity when loaded, they have a major effect on
its handling and steering response. You should
therefore always remember not to exceed the
approved roof load capacity, the approved
gross vehicle weight or the axle loads when
loading the rack.
You can find the specified weights under
Weights on page264.
The load on the roof must be evenly distributed
and must not extend outward beyond the limits
of the loading surface. Always stow the heaviest
pieces on the bottom. Be sure that adequate
clearance is maintained for raising the pan-
orama glass sunroof, and that objects do not
project into the opening path of the liftgate.
Secure roof-mounted cargo correctly and
securely to prevent it from shifting or falling off
during the trip.
Drive smoothly. Avoid sudden acceleration and
braking maneuvers. Take corners gently.

Navigation
Driving tips
141Reference
At a glance
Controls
Communications
Entertainment
Mobility
The related town/city is displayed after the
street name.
If a town/city has already been entered, you can
undo this entry. This may be practical if the
desired street does not exist in the entered des-
tination, because, for example, it belongs to
another part of the town/city.
1.Change to upper field.
The arrow is selected.
2.Turn the controller to the right until the
request for the entry of a street in the coun-
try appears and press the controller.
3.Change to the second field from the top and
enter the street.
Entering house number
All house numbers stored for the street on the
navigation DVD can be entered.
1.Select "House number" and press the con-
troller.
2.Enter the house number:
Select the desired digits and press the con-
troller.
3.Change into the third field from the top.
Turn the controller until the house number
is selected and press the controller.
Starting destination guidance with
manual destination entry
>Select "Start guidance" and press the con-
troller.
Destination guidance starts immediately.
>If the destination guidance does not need to
be started immediately:
Select "Add to destination list" and press
the controller.
The destination is stored in the destination
list, refer to page145.
Entering destination via
voice*
You can enter a desired destination with the
voice command system. When entering the
destination, it is possible to change between
voice command and iDrive at any time. Reacti-
vate the voice command system for this pur-
pose if necessary.
With {Options} you can have the possible
commands read aloud.<
1.Press the button on the steering wheel.
2.{Enter address}

Destination guidance
154
Repeating and canceling voice
instructions
With the programmable buttons on the steering
wheel you can also make the following settings,
refer to page53:
>Repeat the voice instruction:
Press the button.
>Switch voice instructions on/off:
Hold the button down.
Setting volume of voice instructions
The volume can only be adjusted while a voice
instruction is being output.
1.Repeat the last voice instruction, if neces-
sary.
2.Turn the button during the voice instruction
to select the desired volume.
This volume is independent of the volume of the
audio sources.
The setting is stored for the remote control cur-
rently in use.
Changing route
During destination guidance, you can revise the
navigation system's route recommendations to
avoid particular stretches of road. Enter the
number of miles/kilometers that you want to
travel before returning to the original route.
1.Select "Navigation" and press the control-
ler.
2.Change into the third field from the top.
Turn the controller until "New route" is
selected and press the controller.
3.Turn the controller to enter the desired
number and press the controller.
The route is recalculated.
To exit from the menu without changing the
route:
Select the arrow and press the controller.
Traffic information*
In many congested areas, you can receive traf-
fic information transmitted by radio stations.
The traffic conditions are monitored by traffic
management centers and the traffic information
is periodically updated.
During destination guidance, the traffic infor-
mation relevant to your planned route is auto-
matically displayed and, if you wish, taken into
account in the route planning. Whether destina-
tion guidance is active or not, you can have the
traffic information displayed in the map view or
in the traffic info list.

On/Off and settings
162
On/Off and settings
The following audio and video sources have
common controls and adjustment options:
>Radio
>CD player
>CD changer
*
Controls
The audio and video sources can be operated
with:
>Buttons in the area of the CD player
>iDrive
>Buttons
on steering wheel, refer to page11
>Programmable memory/direct selection
buttons, refer to page21
Buttons on CD player
Equipment with a single drive
1Entertainment sound output on/off, volume
>Press: switch on/off.
When the system is switched on, the
most recently selected radio station or
CD track is played.
>Turn: adjust volume.
2 Eject CD.
3Drive for audio CDs
4 Station scan/track search
>Change radio station.
>Select track for CD player and
CD changer.
Equipment with two drives
1Entertainment sound output on/off, volume
>Press: switch on/off.
When the system is switched on, the
most recently selected radio station or
CD track is played.
>Turn: adjust volume.
2Drive for audio CDs
3 Eject CD.
4 Station scan/track search
>Change radio station.
>Select track for CD player and
CD changer.
5Drive for navigation DVDs
Operation via iDrive
iDrive, for operating principle refer to page16.
1.Press the button.
This opens the start menu.
2.Move the controller backwards to open
"Entertainment".

Navigation
Entertainment
Driving tips
163Reference
At a glance
Controls
Communications
Mobility
You have the following choices:
>"FM" and "AM": radio reception
>"WB": Weather Band station
>"SAT": satellite radio
*
>"CD": CD player or changer
>"AUX": AUX-In connection, USB audio
interface
>"Set": depending on the audio source,
other adjustments can be made, e.g. with
the radio: update station with strongest
reception, store station, tone control, sam-
ple stations.
From another menu, you can change
directly to the screen last displayed,
refer to Comfort opening of menu items on
page18.<
From radio readiness, the selected audio
source is stored for the remote control currently
in use.
Switching on/off
To switch the Entertainment sound output on
and off:
Press knob1 on the CD player.
This symbol on the Control Display indi-
cates that sound output is switched off.
For equipment with a single drive, the sound
output is available for approx. 20 minutes with
the ignition switched off.
Switch on the sound output again for this pur-
pose.
Adjusting volume
Turn knob1 on the CD player until the desired
volume is set.
You can also adjust the volume with buttons on
the steering wheel, refer to page11.
From radio readiness, the setting is stored for
the remote control currently in use.
Tone control
You can alter various tone settings, e. g. treble
and bass, or the speed-dependent volume
increase.
The tone settings are set for all audio sources at
once.
From radio readiness, the settings are stored
for the remote control currently in use.
Changing tone settings
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Turn the controller until "Settings" is
selected and press the controller.
4.Select "Audio" or "Tone / Volume" and
press the controller.
The tone settings can also be selected when
you have opened "Entertainment" in the start
menu:
Select "Set" and then "Tone", and press the
controller.
Treble and bass
1.Select "Treble / Bass" and press the con-
troller.