2009 BMW 328I CONVERTIBLE width

Adjustments
44 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

Controls
47Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
rests so that they are locked in place. Otherwise
there is a risk of accident due to an unexpected
movement.<
Heated seats*
Press once for each temperature level.
Three LEDs indicate the highest temperature.
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 page55.
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 page55.
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 page55.
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.

Adjustments
50 that were folded in by hand back out into their
correct positions. Mirrors that were folded in are
folded out automatically at a speed of approx.
25 mph/40 km/h.
Before entering an automatic car wash,
fold in the exterior mirrors manually or
with button3 to prevent them from being dam-
aged, depending on the width of the vehicle.<
Automatic heating
Depending on the outside temperature, both
exterior mirrors are heated automatically when
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.Shift to reverse or engage selector lever or
transmission 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
is a risk of accident due to an unexpected move-
ment.<

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.

Wheels and tires
202
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 … 3208 means that the
tire was manufactured in week 32 of 2008.
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 tires225/45 R1791 V
e.g.
Manufacturer's code
for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 3208

Mobility
213Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Care
Care products
Regular cleaning and care contributes signifi-
cantly to the value retention of your BMW.
BMW recommends cleaning and caring for your
vehicle with products that are approved by
BMW for this purpose.
Your BMW center will be happy to advise you on
the products and services available for cleaning
and caring for your BMW.
Original BMW CareProducts have been
material tested, laboratory checked and
proven in the field, and offer optimal care and
protection for your vehicle.<
Do not use cleaners that contain alcohol
or solvents as these may result in dam-
age.<
Cleaning agents can contain substances
that are dangerous or hazardous to your
health. Therefore, follow the warning and safety
instructions on the packaging. When cleaning
inside the vehicle, always open the doors or
windows of the vehicle. In enclosed areas, pro-
vide for sufficient ventilation. Only use products
designed for cleaning vehicles.<
Exterior care
Washing the vehicle
Especially during the winter months,
ensure that the vehicle is washed more
frequently. Heavy soiling and road salt can lead
to vehicle damage.<
After washing the vehicle, apply the
brakes briefly to dry them, otherwise
water can reduce braking efficiency over the
short term and the brake discs can corrode.<
Automatic car washes
Preference should be given to cloth car washes.Do not use high-pressure car washes,
otherwise water may drip into the vehicle
around the windows.<
Before driving into a car wash, ensure that it is
suitable for your BMW. Check the following:
>Dimensions of your vehicle, refer to
page233
>If necessary: fold in the exterior mirrors,
refer to page49
>Maximum permissible tire width
Preparations before driving into an automatic
car wash:
>Unscrew the rod antenna
*.
>Deactivate the rain sensor
* to prevent unin-
tentional wiping.
>Remove additional attachments, e.g.
spoiler or telephone antennas, if there is a
possibility that they could be damaged.
Automatic transmission
Before driving into an automatic car wash, per-
form the following steps to ensure that the vehi-
cle can roll:
1.Insert the remote control, even with conve-
nient access, into the ignition lock.
2.Move the selector lever to position N.
3.Release the parking brake.
4.Switch off the engine.
5.Leave the remote control in the ignition lock
so that the vehicle can roll.
Steam jets / high-pressure washers
When using steam jets or high-pressure
washers, ensure that you maintain suffi-
cient clearance to the vehicle and do not exceed
a temperature of 1407/606.
Insufficient clearance or excessive pressure or
temperature can lead to component damage or
water penetration. Follow the operating instruc-
tions of the high-pressure washer.<

Reference 243
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
AUTO program for automatic
climate control98
AUX-IN
– port106
AUX-IN port163
Average fuel consumption71
– setting the units72
Average speed71
Avoid highways in
navigation135
Avoiding unintentional
alarms33
Axle loads, refer to
Weights235
B
Backrest contour, refer to
Lumbar support44
Backrests, refer to Seat
adjustment43
Backrest width adjustment44
Back seats
– refer to Rear seats45
Backup lamps
– replacing bulb220,221
Backup lamps, refer to Tail
lamps220
Bag holder110
Band-aids, refer to First-aid
pouch225
Bar, refer to Towing
methods227
Base plate for telephone or
mobile phone
– refer to Snap-in adapter179
– refer to Snap-in adapter in
the center armrest storage
compartment106
Bass, tone setting144
Battery222
– charging222
– disposal35,222
– jump starting225
– remote control26
– temporary power failure222
Battery for mobile phone179Battery renewal
– remote control35
– remote control for vehicle35
Being towed227
Belt hand-over49
– pinch protection system49
Belts, refer to Safety belts48
Belt tensioner, refer to Safety
belts48
Beverage holders, refer to
Cup holders107
Blinds, refer to Roller sun
blinds105
Blower, refer to Air flow
rate99
Bluetooth, activating/
deactivating172
Bluetooth, refer to separate
Owner's Manual
BMW
– car shampoo215
BMW Assist, activating184
BMW Assist183
BMW center188
BMW Homepage4
BMW Maintenance
System211
BMW Search184
BMW webpage
4
Bottle holders, refer to Cup
holders107
Brake assist, refer to Dynamic
Brake Control DBC83
Brake fluid, refer to Service
requirements73
Brake force display89
Brake lamps
– brake force display89
– replacing bulb220,221
Brake pads116
– breaking in116
Brake rotors118
– brakes116
– breaking in116Brakes
– ABS83
– BMW Maintenance
System211
– brake force display89
– breaking in116
– parking brake56
– service requirements73
Brakes, refer to Braking
safely118
Brake system116
– BMW Maintenance
System211
– breaking in116
– disc brakes118
Breakdown services, refer to
Roadside Assistance224
Breaking in the clutch116
Breaking in the differential,
refer to Engine and
differential116
Break-in period116
Brightness of Control
Display80
Bulb changing, refer to Lamps
and bulbs218
Button for starting the engine,
refer to Start/stop button55
Buttons on the steering
wheel11
C
California Proposition 65
warning6
Call
– accepting173
– ending174
– rejecting174
Calling, refer to Phone
numbers, dialing174
Can holders, refer to Cup
holders107
Capacities235
Capacity of the cargo bay235
Car battery, refer to Vehicle
battery222
Car care, refer to Care213

Everything from A - Z
256 Warning and indicator
lamps13
Warning messages, refer to
Check Control77
Warning triangle225
Washer fluid61
– content of the reservoir61
Washer fluid reservoir61
Waste tray, refer to
Ashtray108
Water on roads, refer to
Driving through water118
Water penetration213,214
Waveband on the radio147
Wear indicators in tires, refer
to Minimum tread depth203
Weather information150
Weights235
Welcome lamps93
Wheel/tire combination, refer
to Correct wheels and
tires204
Wheelbase, refer to
Dimensions233
Wheels, new204
Wheels and tires194
Width, refer to
Dimensions233
Wind deflector40
Windows35
– convenient operation28
– convenient operation with
convenient access34
– opening, closing36
– pinch protection system36
Windows, indicator on Control
Display16
Windshield
– cleaning60
Windshield wash60
– filling capacity, reservoir235
– nozzles61
– reservoir for washer fluid61
– washer fluid61
Windshield wiper blades,
changing217
Windshield wipers, refer to
Wiper system60Winter tires205
– setting speed limit79
– storage205
Wiper blade replacement217
Wiper system60
Word-matching principle for
navigation135
Work in the engine
compartment206
Wrench/screwdriver, refer to
Onboard tool kit217
X
xDrive84
Xenon lamps
– replacing bulbs218
Y
Your individual vehicle
– settings, refer to Personal
Profile26