2008 BMW 328XI CONVERTIBLE width

Controls
47Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
1Longitudinal direction
2Height
3Angle
4Backrest
5Convertible: head restraints
Coupe: the head restraints are adjusted manu-
ally, refer to Head restraints below.
Lumbar support*
You can also adjust the contour of the backrest
to obtain additional support in the lumbar
region.
The upper hips and spinal column receive sup-
plementary support to help you maintain a
relaxed, upright sitting position.
>Increase or decrease curvature: press the
switch at the front or rear, respectively.>Shift curvature up or down: press the switch
at the top or bottom, respectively.
Backrest width*
You can change the width of the backrest to suit
your individual preferences by adjusting the lat-
eral-support pads.
Press the front or rear end of the switch.
Backrest width decreases or increases accord-
ingly.
Longitudinal adjustment from outside/
behind*
To move the front seats forward or backward
from outside or from one of the rear seats: with
the door open, press the front end 1 or rear end
2 of the switch.
Head restraints
A correctly adjusted head restraint reduces the
risk of neck injury in the event of an accident.
Adjust the head restraint in such a way
that its center is at approx. ear level. Oth-
erwise, there is an increased risk of injury in the
event of an accident. Only remove a head
restraint if no one will be sitting on the seat in
question. Reinstall the head restraint before

Adjustments
50 To switch off:
Press button longer.
If you continue driving within approx. the next
15 minutes, the seat heating is automatically
activated at the previously set temperature.
The temperature is lowered or the heating is
switched off entirely to save on battery power.
The LEDs stay lit.
Seat and mirror memory*
You can store and call up two different combi-
nations of driver's-seat and exterior-mirror
positions.
Settings for the backrest width and lumbar sup-
port are not stored in memory.
Storing
1.Switch on radio readiness or the ignition,
refer to page59.
2.Adjust the seat and exterior mirrors to the
desired positions.
3.Press the button.
The LED in the button lights up.
4.Press the desired memory button 1 or 2: the
LED goes out.
The driver's seat and exterior mirror posi-
tions are stored for the remote control cur-
rently in use.
Call-up
Do not call up memory while you are driv-
ing, otherwise unexpected seat move-
ment could result in an accident.<
Convenience mode
1.Unlock and open the driver's door or switch
on radio readiness, refer to page59.
2.Briefly press the desired memory button1
or 2.
The adjusting procedure is halted immediately
when you touch a seat adjustment switch or
one of the memory buttons.
Safety feature
1.Close the driver's door and switch the igni-
tion on or off, refer to page59.
2.Press the desired memory button1 or2
and keep it pressed until the adjustment
process has been completed.
If the button was pressed accidentally:
Press the button again; the LED goes out.
Call-up with the remote control
The driver's seat position last stored is stored
for the remote control currently in use.
You can select the occasion on which the seat is
reset to that position.
>Call-up when the vehicle is unlocked.
>Call-up when the driver's door is opened.
When this Personal Profile function is
used, first make sure that the footwell
behind the driver's seat is free of obstacles.
Failure to do so could cause injury to persons or
damage to objects as a result of a rearward
movement of the seat.<
The adjusting procedure is halted immediately
when you touch a seat adjustment switch or
one of the memory buttons.
Selecting automatic call-up
iDrive, for operating principle refer to page16.
1.Open 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.If necessary, move the highlight marker to
the uppermost field. Turn the controller

Controls
53Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
folded out automatically at a speed of approx.
25 mph/40 km/h.
Before entering an automatic car wash,
fold in the exterior mirrors by hand or with
button3, to prevent them from being damaged
due to the width of the vehicle.<
Automatic heating
Both exterior mirrors are heated automatically
while the engine is running or the ignition is
switched on.
Passenger-side mirror tilt function –
automatic curb monitor*
Activating
1.Push the switch to the position for the
driver's-side mirror, arrow 1.
2.Engage reverse gear or move the selector
lever to position R.
The glass of the mirror on the passenger
side tilts slightly down. This allows the
driver to see the area immediately adjacent
to the vehicle, e.g. a curb, when backing into
a parking space.
Deactivating
Push the switch to the position for the passen-
ger-side mirror, arrow 2.
Interior rearview mirror
Turn the knob to reduce glare from the head-
lamps of cars behind you when driving at night.
Interior and exterior mirrors, automatic
dimming feature*
The automatic dimming feature of the interior
and exterior mirrors
* is controlled by two photo
cells in the interior rearview mirror. One photo
cell is in the mirror frame, see arrow; the other is
on the back of the mirror.
In order to ensure that the system functions
correctly, keep the photo cells clean, do not
cover the area between the interior rearview
mirror and windshield, and do not affix adhesive
labels or stickers of any kind to the windshield
directly in front of the mirror.
Steering wheel
Adjustments
Do not adjust the steering wheel position
while the car is in motion, otherwise there
i s a ri s k o f a c c id e n t du e t o a n un e x p e ct e d m o v e -
ment.<

Transporting children safely
56
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 page97.
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 page47.
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.

Wheels and tires
220
Tire identification marks
Knowledge of the labeling on the side of the tire
makes it easier to identify and choose the right
tires.
Tire size
Speed code letter
Q = up to 100 mph or 160 km/h
T = up to 118 mph or 190 km/h
H = up to 131 mph or 210 km/h
V = up to 150 mph or 240 km/h
W = up to 167 mph or 270 km/h
Y = up to 186 mph or 300 km/h
Tire Identification Number
Tires with DOT codes meet the guidelines of
the US Department of Transportation.
DOT code:
Tire age
The manufacturing date of tires is contained in
the tire coding: DOT … 3006 means that the
tire was manufactured in week 30 of 2006.
BMW recommends that you replace all tires
after 6 years at most, even if some tires may last
for 10 years.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder and
maximum section width. For example:
Tread wear 200 Traction AA
Temperature A
DOT Quality Grades
Tread wear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to
Federal Safety Requirements in addition
to these grades.<
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. For example, a tire graded
150 would wear one and one-half (1γ) times as
well on the government course as a tire graded
100. The relative performance of tires depends
upon the actual conditions of their use, how-
ever, and may depart significantly from the
norm due to variations in driving habits, service
practices and differences in road characteris-
tics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked C
may have poor traction performance.
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning, or peak traction charac-
teristics.<
Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate e.g.
Nominal width in mm
Aspect ratio in Ξ
Radial belt construction
Rim diameter in inches
Load rating,
not on ZR tires
Speed code letter, in
front of the R on ZR tires
225/45 R1791 V
e.g.
Manufacturer's code
for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 0705

Reference 253
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Automatic
– air distribution106
– air flow rate106
– cruise control66,67
– headlamp control100
– service notification203
– storing of stations165
Automatic climate control104
– automatic air
distribution106
– settings via iDrive105
Automatic curb monitor53
"Automatic programs" with
automatic climate
control106
Automatic recirculated-air
control AUC106
Automatic station search165
Automatic transmission with
Steptronic61
– interlock61,62
– overriding selector lever
lock63
– shiftlock, refer to Changing
selector lever position62
– sport program62
– towing238
– tow-starting238
"Automatic ventilation"108
AUTO program for automatic
climate control106
"Auto Request"203
"Autostore"
– on the radio166
"AUX"160,179,181
– AUX-In port179
– USB-audio interface180
AUX-IN
– port114
AUX-In port179
Average fuel consumption76
– setting the units78
Average speed76
"Avoid ferries" in
navigation145
"Avoid highways" in
navigation145
Avoid highways in
navigation145Avoiding unintentional
alarms36
"Avoid tollroads" in
navigation145
Axle loads, refer to
Weights247
"A - Z"193
,194
B
Backrest contour, refer to
Lumbar support47
Backrests, refer to Seat
adjustment46
Backrest width adjustment47
Back seats
– refer to Rear seats48
Backup lamps
– replacing bulb233
Backup lamps, refer to Tail
lamps233
Bag holder118
Balance, tone control161
Band-aids, refer to First-aid
pouch237
Bar, refer to Towing
methods239
Base plate for telephone or
mobile phone
– refer to Snap-in adapter in
the center armrest storage
compartment114
Bass, tone control161
Bass sounds, refer to Treble
and bass161
Battery235
– charging235
– disposal38,235
– jump starting237
– remote control28
– temporary power failure235
Battery renewal
– remote control38
– remote control for vehicle38
Being towed239
Belt hand-over52
– pinch protection system52
Belts, refer to Safety belts51Belt tensioner, refer to Safety
belts51
Beverage holders, refer to
Cup holders115
Blinds, refer to Roller sun
blinds113
Blower, refer to Air flow
rate106
Bluetooth, refer to separate
Owner's Manual
"BMW Assist"202,203,204
BMW Assist
– activating206
– Concierge service204
– contacting BMW Customer
Relations204
– Roadside Assistance202
– services offered201
– TeleService203
"BMW Contact"196
"BMW Contact
Numbers"196
BMW Homepage4
BMW Maintenance
System229
"BMW Service settings"207
BMW webpage4
Bottle holders, refer to Cup
holders115
Brake assist, refer to Dynamic
Brake Control DBC89
Brake fluid, refer to Service
requirements79
Brake Force Display96
Brake lamps
– replacing bulb233
– two-stage96
Brake pads124
– breaking in124
Brake rotors126
– brakes124
– breaking in124
Brakes
– ABS89
– BMW Maintenance
System229
– breaking in124
– parking brake60
– service requirements79

Reference 267
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Torque, refer to Engine
data244
Touch tone dialing196
Tow bar239
Tow fitting239
– screw thread239
Tow fittings for tow-starting
and towing away239
Towing238
– car with automatic
transmission238
– methods239
Towing and tow-starting238
Town/city for destination135
"Town / City" in destination
entry135
Tow rope240
Tow-starting238,240
"TPM"94
TPM, refer to Tire Pressure
Monitor93
Tracks
– random play sequence176
– sampling, Scan175
– searching for175
Track width, refer to
Dimensions245
Traction control, refer to DSC
Dynamic Stability
Control89
Traffic information for
navigation
– calling up152
– display on route map153
– during destination
guidance154
– switching on/off151
– symbols154
"Traffic Info settings"152
Traffic jam
– displaying traffic
information151
– driving around154Transmission
– automatic transmission with
Steptronic61
– manual transmission61
– overriding selector lever lock
for automatic transmission
with Steptronic63
Transmission interlock
– refer to Changing selector
lever position62
– refer to P Park62
Transporting children
safely56
Transport securing devices,
refer to Securing cargo128
Tread depth, refer to Minimum
tire tread221
Treble, refer to Treble and
bass161
Treble, tone control
161
"Trip computer"77
Trip computer77
Trip-distance counter, refer to
Trip odometer74
"Triple turn signal"64
Triple turn signal activation64
Trip odometer74
Trunk lid, refer to Luggage
compartment lid33
Turning circle, refer to
Dimensions245
Turn signal indicators
– indicator/warning lamp12
– triple turn signal64
Turn signals63
Tying down loads, refer to
Cargo loading128
U
Underbody protection, refer to
Caring for your vehicle
brochure
Uniform Tire Quality Grading/
UTQR220
"Units"78
Units
– average consumption78
– temperature78Universal garage door opener,
refer to Integrated universal
remote control110
Universal mobile phone
preparation package, refer
to separate Owner's Manual
Universal remote control110
Unlatching, refer to
Unlocking36
"Unlock button"30
Unlocking
– from inside33
– from outside29
– luggage compartment lid37
– without remote control, refer
to Convenient access36
"Update services"205
USB-audio interface180
"USB" for audio
mode179,181
V
Vehicle
– battery235
– breaking in124
– care, refer to Caring for your
vehicle brochure
– cargo loading127
– Identification Number, refer
to Engine compartment225
– measurements, refer to
Dimensions245
– parking60
– washing, refer to Caring for
your vehicle brochure
– weight247
"Vehicle / Tires" for
unlocking30
Vehicle decommissioning
– refer to Caring for your
vehicle brochure
Vehicle jack235
Vehicle position, refer to
Displaying current
position155
Ventilation107
– draft-free108
– in the rear108

Everything from A - Z
268 Ventilation, refer to
Climate104
Ventilation while at a
standstill108
Vents, refer to Ventilation107
"Vent settings"105
Voice commands
– overview23
– short commands248
Voice instructions from
navigation system150
– muting55,151
– repeating55,151
– switching on/off150
– volume151
Voice phone book198
Volume160
– audio sources160
– fuel tank, refer to
Capacities247
– mobile phone191
– speed-dependent
control161
– voice instructions151
Volume distribution
– front/rear161
– left/right161
W
Warning and indicator
lamps13
Warning messages, refer to
Check Control83
Warning triangle237
Washer fluid65
– content of the reservoir65
Washer fluid reservoir65
Washing the car, refer to
Caring for your vehicle
brochure
Waste tray, refer to
Ashtray116
Water on roads, refer to
Driving through water126
Waveband with the radio164
Wear indicators in tires, refer
to Minimum tread depth221
Weights247Welcome lamps100
"Welcome light"101
Wheel/tire combination, refer
to Correct wheels and
tires222
Wheelbase, refer to
Dimensions245
Wheels, new222
Wheels and tires212
Width, refer to
Dimensions245
Wind deflector42
Windows38
– convenient operation30
– convenient operation with
convenient access37
– opening, closing38
– pinch protection system39
Windows, indicator on Control
Display16
Windshield
– cleaning65
Windshield wash64
– filling capacity, reservoir247
– nozzles65
– reservoir for washer fluid65
– washer fluid65
Windshield wiper blades,
changing231
Windshield wipers, blades,
care, refer to Caring for your
vehicle brochure
Windshield wipers, refer to
Wiper system64
Winter tires223
– setting speed limit85
– storage223
Wiper blade replacement231
Wiper system64
"With highways" in
navigation145
Wooden trim, refer to Caring
for your vehicle brochure
Word-matching principle for
navigation146
Work in the engine
compartment224
Wrench/screwdriver, refer to
Onboard tool kit231
X
xDrive90
Xenon lamps
– replacing bulb232
Y
Your individual vehicle
– settings, refer to Personal
Profile28