2008 BMW 128I CONVERTIBLE fuel pressure

Technology for driving comfort and safety
88 equipped with a tire pressure monitoring sys-
tem, TPMS, that illuminates a low tire pressure
telltale when one or more of your tires are signif-
icantly under-inflated. Accordingly, when the
low tire pressure telltale illuminates, you should
stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving
on a significantly underinflated tire causes the
tire to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency and
tire tread life, and may affect the vehicle’s han-
dling and stopping ability. Please note that the
TPMS is not a substitute for proper tire mainte-
nance, and it is the driver’s responsibility to
maintain correct tire pressure, even if underin-
flation has not reached the level at which the
TPMS low tire pressure telltale illuminates.
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 lit. This sequence will continue
upon subsequent vehicle startups as long as
the malfunction exists. When the malfunction
indicator is illuminated, the system may not be
able to detect or signal low tire pressure 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
Active steering varies the turning angle of the
front wheels in relation to steering wheel move-
ments. It also varies the steering force required
to turn the wheels depending on the speed at
which you are driving.
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, and less effort is required to turn the
wheels. 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. This stabilizing
intervention is simultaneously deactivated
when DSC is switched off, refer to page82.
Malfunction
The warning lamps come on. Active
steering is no longer operational. At
low speeds, greater steering wheel
movements are required, whereas at
higher speeds the vehicle reacts more sensi-
tively to steering wheel movements. The stabil-
ity-enhancing feature may also be deactivated.
Drive cautiously and think well ahead. Have the
system checked.
Brake Force Display*
On the left: normal braking.
On the right: sharp braking.

Things to remember when driving
114
Things to remember when driving
Break-in period
Moving parts need breaking-in time to adjust to
each other. Please follow the instructions below
in order to achieve the optimal service life and
economy of operation for your vehicle.
Engine and differential
Always obey all official speed limits.
Up to 1,200 miles/2,000 km
Drive at varying engine and road speeds, but do
not exceed an engine speed of 4500 rpm or a
road speed of 100 mph/160 km/h.
Avoid full-throttle operation and use of the
transmission's kick-down mode.
After driving 1,200 miles/2,000 km
Engine and vehicle speeds can be gradually
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until after an initial break-in
period. Therefore, drive cautiously during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive cautiously during this break-in
period.
Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.
Following part replacement
The same break-in procedures should be
observed if any of the components mentioned
above have to be renewed in the course of the
vehicle's operating life.
Saving fuel
The fuel consumption of your vehicle depends
on several factors. You can lower fuel consump-
tion and the environmental impact by taking
certain measures, adjusting your driving style
and having the vehicle serviced regularly.
Remove any unneeded cargo
Additional weight increases fuel consumption.
Remove any mounted parts after you
have finished using them
Remove unneeded additional mirrors, the roof
rack and the rear luggage rack after use.
Mounted parts affect the vehicle's aerodynam-
ics and increase fuel consumption.
Close the windows and glass roof
An open glass roof or window causes higher air
resistance and thus increases fuel consump-
tion.
Check tire inflation pressure regularly
Check the tire inflation pressure at least twice a
month and before embarking on a long journey,
and correct it if necessary.
Low tire inflation pressure causes higher rolling
resistance and thus increases fuel consumption
and tire wear.
Set off immediately
Do not let the engine warm up while the car is
still standing, but set off immediately at moder-
ate engine speed. This is the fastest way for the
cold engine to reach its operating temperature.

Care
220 temperature can lead to component damage or
water penetration. Follow the operating instruc-
tions of the high-pressure washer.<
When using high-pressure washers, do
not spray against the sensors and cam-
eras, e.g. of the Park Distance Control or Rear
View Camera, for an extended period and main-
tain a distance of at least 12 in/30 cm.<
Manual car wash
When washing the vehicle by hand, use large
quantities of water and car shampoo if neces-
sary. Clean the vehicle with a sponge or wash-
ing brush, applying light pressure only.
Before cleaning the windshield, deacti-
vate the rain sensor or switch off the igni-
tion to prevent unintentional activation of the
wipers.<
Observe local regulations pertaining to
washing vehicles by hand.<
Headlamps
Do not rub them dry and do not use abrasive or
corrosive cleaning agents.
Remove contamination, such as insects, by
soaking with shampoo or insect remover and
then rinsing with plenty of water.
Thaw ice with a windshield de-icer and do not
use an ice scraper.
Windows
Clean the inside and outside surfaces of the
windows and the mirrors with window cleaner.
Do not clean the mirrors with cleaners
containing quartz.<
Wiper blades
Clean with soapy water and replace regularly to
avoid streaking.
Wax and preservative residue and con-
tamination on the window can lead to
streaking when operating the windshield wip-
ers, leading to premature wear of the wiper
blades and causing the rain sensor to malfunc-
tion.<
Convertible top care
The appearance and life of the convertible top
depend on proper care and operation.
Follow these instructions:
>Do not fold the convertible top into the con-
vertible top box when the top is wet or fro-
zen, as this may cause water spots, mold
stains or chafed areas.
>If water spots occur on the inside headliner
despite precautions, remove them using a
microfiber cloth and interior cleaner.
>If the vehicle is parked in enclosed areas for
extended periods, ensure that there is suffi-
cient ventilation.
>Remove bird droppings immediately, as
their corrosive ingredients attack the con-
vertible top and damage the rubber seals.
To remove stains from the convertible
top, do not use stain removers, paint thin-
ners, solvents, benzine or similar substances.
These substances may damage the rubber
parts. Improper care and cleaning may cause
the convertible top and convertible top seams
to become leaky.<
To remove heavy soiling, use a special convert-
ible top cleaner.
Follow the manufacturer's instructions for use.
After washing the convertible top three to five
times, treat it with an impregnating agent.
Paintwork care
Regular care contributes to value retention and
protects the paintwork against the long-term
effects of damaging substances.
Region-specific environmental influences can
damage the vehicle paintwork. Therefore, it is
important to adapt the frequency and scope of
car care accordingly.
Immediately remove very aggressive sub-
stances, e.g. spilled fuel, oil, grease, tree resin
or bird droppings, to prevent damage to the
paintwork.

Everything from A - Z
244
Everything from A - Z
Index
"..." Identifies Control Display
texts used to select
individual functions and
refers you to the page where
these texts can be found.
A
ABS Antilock Brake
System82
Accessories, refer to The
individual vehicle5
Accident, reporting, refer to
Emergency Request229
Activated-charcoal filter101
"Activation time" for parked
car ventilation101
Active steering88
Adaptive Head Light94
"Add digits" on the mobile
phone184
Additives
– coolant216
– engine oil215
"Address book" in
navigation131
Address for navigation
– deleting133
– entering123,131
– selecting132
– storing131
– storing current position132
"Add to destination list"126
Airbags89
– sitting safely45
– warning lamp90
Air conditioner97
Air distribution
– automatic99
Air flow rate99
Airing, refer to Ventilation100
Air outlets, refer to Air
vents97Air pressure, checking, refer
to Tire inflation
pressure204
Air recirculation, refer to
Recirculated-air mode99
"Air recirculation on / off"53
Air vents97
AKI, refer to Fuel
specifications202
Alarm system34
– avoiding unintentional
alarms35
– interior motion sensor35
– switching off an alarm35
– tilt alarm sensor35
"All channels" for satellite
radio161
All-season tires, refer to
Winter tires211
"All stations", displaying with
the radio154
"AM", waveband150,154
Ambient air, refer to
Recirculated-air mode
99
Antenna for mobile phone176
Antifreeze
– coolant216
– washer fluid64
Antilock Brake System
ABS82
Anti-theft alarm system, refer
to Alarm system34
Anti-theft system29
Approved axle loads, refer to
Weights239
Approved gross vehicle
weight, refer to Weights239
Armrest, refer to Center
armrest107
Arrival time
– computer69
Arrival time, refer to Starting
destination guidance136Arrow display for
navigation137
"Arrow display" in
navigation137
Ashtray107
Assist191
Assistance systems, refer to
Dynamic Stability Control
DSC82
"Assist profile"197
AUC Automatic recirculated-
air control99
"Audio"153,157
Audio150
– controls150
– switching on/off150
– tone control151
– volume151
"Audio", refer to Tone
control151
Automatic
– air distribution99
– air flow rate99
– BMW Teleservice Call193
– cruise control65
– headlamp control92
– storing of stations155
Automatic car wash, refer to
Car wash116
Automatic car washes219
Automatic climate control97
– automatic air distribution99
– settings via iDrive98
Automatic curb monitor52
Automatic lamps
– refer to Welcome lamps92
"Automatic programs" with
automatic climate control99
Automatic recirculated-air
control AUC99
Automatic station search155

Reference 249
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC82
Emergency operation, refer to
Manual operation
– door lock32
– fuel filler door202
– glass roof40
– transmission lock, automatic
transmission62
Emergency release, luggage
compartment lid34
Emergency Request229
Emergency services, refer to
Roadside Assistance229
"Enabled services"196
"Enabled TeleServices"194
"End call"183
Energy, saving
– saving fuel114
Engine
– breaking in114
– data236
– speed236
– starting59
– starting, convenient
access36
– switching off59
Engine compartment213
Engine coolant, refer to
Coolant216
Engine oil
– adding215
– additives215
– BMW Maintenance
System217
– checking level213
– intervals between changes,
refer to Service
requirements72
– specified engine oils215
"Engine oil level"214
Engine output, refer to Engine
data236
Engine speed, refer to Engine
data236
Engine starting, refer to
Starting the engine59
"Enter address"124Entering a destination124
Entering a destination
country124
Entering a house number or
intersection126
Entering an intersection125
Entering a street125
"Entertainment"150
"Equalizer", refer to Tone
control152
Equalizer, refer to Tone
control152
"ESN"160
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC82
Event data recorders218
Exhaust system, refer to Hot
exhaust system115
Exterior mirrors51
– adjusting51
– automatic dimming
feature53
– automatic heating52
– folding in and out52
External audio device, refer to
AUX-In port169
Eyes
– for tow-starting and towing
away231
– for tying down loads118
F
Fader, tone control151
Failure messages, refer to
Check Control77
Failure of an electrical
consumer227
False alarm, refer to Avoiding
unintentional alarms35
Fastening safety belts, refer to
Safety belts51
Fastest route for
navigation134
Fast forward
– CD changer167
– CD player167
"Fast route" in navigation134Filter of automatic climate
control, refer to Microfilter/
activated charcoal filter101
First aid pouch230
Fixture for remote control,
refer to Ignition lock58
Flash when locking/
unlocking31
Flat tire
– Run-Flat Tires210
– Tire Pressure Monitor
TPM85
Flat Tire Monitor FTM84
– indicating a flat tire85
– initializing the system84
– malfunction85
– system limits84
Flat tires, refer to Tire
condition209
"FM", waveband150,154
FM, waveband154
Fog lamps95
– indicator lamp13,95
Footbrake, refer to Braking
safely116
Footwell lamps95
For your own safety5
Frequency, selecting
manually155
Front airbags89
Front seat setting45
Frost, removing from
windows, refer to Defrosting
windows100
FTM, refer to Flat Tire
Monitor84
Fuel202
– gauge68
– high-quality brands202
– quality202
– specifications202
– tank contents, refer to
Capacities239
Fuel clock, refer to Fuel
gauge68
Fuel consumption display,
refer to Average fuel
consumption69

Everything from A - Z
250 Fuel consumption statistics,
refer to Average fuel
consumption69
Fuel display, refer to Fuel
gauge68
Fuel filler door202
– releasing in the event of
electrical malfunction202
Fuses227
G
Garage door opener, refer to
Integrated universal remote
control103
Gasoline, refer to Required
fuel202
Gasoline display, refer to Fuel
gauge68
Gear change
– with automatic
transmission61
– with manual transmission60
Gear display, with automatic
transmission60
Gearshift lever
– automatic transmission with
Steptronic61
– manual transmission60
General driving notes115
Glass roof, electric39
– closing after electrical
malfunction40
– convenient operation32
– opening, closing39
– operation with convenient
access36
– pinch protection system40
– raising39
– remote control30
Glove compartment106
GPS navigation, refer to
Navigation system122
Grills, refer to Air vents97
Gross vehicle weight, refer to
Weights239
H
Halogen lamps
– replacing bulbs224
Handbrake, refer to Parking
brake59
Hands-free system, refer to
Microphone for hands-free
mode14
Hazard warning flashers14
"HD radio"157
HD radio, refer to High
Definition Radio157
Head airbags89
Headlamp control,
automatic92
Headlamp cover224
Headlamp flasher62
– indicator lamp13
Headlamps
– replacing bulbs224
Head restraints47
Heated
– seats49
Heated mirrors52
Heating
– mirrors52
– seats49
Heating, rear window100
Heating and ventilation97
Heating during a stop100
Heavy loads, refer to Stowing
cargo117
Height, refer to
Dimensions237
Height adjustment
– steering wheel53
High beams94
– indicator lamp13
– replacing bulbs224
High Definition Radio157
High-pressure
washer219,220
High water, refer to Driving
through water116
Highways, refer to Route
criteria134
Hills116
Holders for cups107Home address133
"Home address" in
navigation134
Hood212
Hot exhaust system115
"Hour memo"76
"House number" in
destination entry126
Hydraulic brake assist, refer to
Dynamic Brake Control82
Hydroplaning115
I
IBOC, refer to High Definition
Radio157
Ice warning, refer to Outside
temperature
warning67
ID3 tag, refer to Information
about the track165
Identification marks
– tire coding208
iDrive16
– adjusting brightness80
– automatic climate control98
– changing date and time75
– changing language80
– confirming selection or
entry19
– displays, menus17
– lists19
– menu guidance17
– operating principle16
– selecting a menu item19
– status information20
– switching menu pages19
– symbols18
Ignition58
– switched off58
– switched on58
Ignition key, refer to
Integrated key/remote
control28
Ignition key position 1, refer to
Radio readiness58
Ignition key position 2, refer to
Ignition on58
Ignition lock58

Everything from A - Z
252 Luggage compartment lid33
– convenient access37
– emergency release34
– opening from outside33
– unlocking manually33
– unlocking with remote
control30
Luggage rack, refer to Roof-
mounted luggage rack118
Lumbar support47
M
M+S tires, refer to Winter
tires211
Maintenance, refer to
– BMW Maintenance
System217
– Service booklet
Maintenance system217
Malfunction warnings, refer to
Check Control77
Manual
– BMW Teleservice Call193
Manual car wash220
"Manual" on the radio155
Manual operation
– door lock32
– fuel filler door202
– glass roof40
– luggage compartment lid33
– transmission lock, automatic
transmission62
Manual operation with
automatic transmission61
Manual transmission60
Map
– changing scale139
– destination entry128
"Map direction of travel"138
"Map facing north"138
Maximum cooling98
Maximum speed
– for winter tires211
Menus, refer to iDrive16
Message list, traffic
information142Microfilter/activated-charcoal
filter for automatic climate
control101
Microphone for telephone14
Mirror dimming feature53
Mirrors51
– automatic curb monitor52
– exterior mirrors51
– heating52
– interior rearview mirror52
"Missed calls"184
Missed calls184
Mobile phone
– accepted calls184
– adjusting volume181
– calling183
– ending call183
– missed calls184
– operation via iDrive181
– redialing184
– Top 8184
– touch tone dialing186
Mobile phone, installation
location, refer to Center
armrest107
Mobile phone, refer to the
separate Owner's Manual
Modifications, technical, refer
to For your own safety5
Monitor, refer to iDrive16
Monitoring system for tire
pressures, refer to Flat Tire
Monitor84
"Monitor on / off"54
Most recent mobile phone
numbers184
MP3, refer to Compressed
audio files163
Multifunctional steering
wheel, refer to Buttons on
the steering wheel11
Multifunction switch
– refer to Turn signals/
headlamp flasher62
– refer to Wiper system63
Music tracks, refer to
Tracks164
"Mute on / off"54
N
"Navigation"123,129
Navigation announcements,
refer to Switching voice
instructions on/off140
Navigation drive, location122
Navigation DVD122
– drive150
Navigation system122
– address book131
– changing a route141
– destination entry123
– destination list130
– displaying current
position144
– entering a destination
manually123,127
– last destinations130
– navigation DVD122
– opening123
– route display137
– route list139
– searching for a special
destination129
– selecting destination using
information129
– selecting destination via
map128
– selecting route criteria134
– starting destination
guidance136
– switching off, refer to
Terminating/continuing
destination guidance136
– terminating/continuing
destination guidance136
– voice instructions140
– volume adjustment140
"Navigation voice
instructions"139
"Navigation voice
instructions" via buttons on
steering wheel53
Neck support, refer to Head
restraints47
Nets, refer to Storage
compartments107

Reference 253
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
"New address" in
navigation132
"New destination"124,128
"New route"141
New tires210
"Next entertainment
source"54
North-facing map138
Number of cylinders, refer to
Engine data236
O
OBD socket, refer to Socket
for On-Board Diagnosis218
Octane ratings, refer to Fuel
specifications202
Odometer67
Oil, refer to Engine oil213
Oil consumption213
Oil level213
Old batteries, refer to
Disposal227
"On a new destination" in
navigation130
"Onboard info"69
Onboard tool kit223
"On destination"130
"On location"130
Opening and closing
– convenient access36
– from inside32
– from outside29
– using the door lock32
– via the remote control29
Operation by voice for mobile
phone187
– adjusting volume188
– canceling187
– correcting phone
number188
– dialing phone number188
– placing a call188
– redialing188
– voice commands187
– voice phone book188
"Options"195,196
Orientation menu, refer to
Start menu17Outlets, refer to
Ventilation100
Output, refer to Engine
data236
Outside temperature
display67
– changing unit of measure71
– on computer71
Outside temperature
warning67
Overriding selector lever
lock62P
Paintwork care220
Park assistant, refer to Park
Distance Control81
Park Distance Control PDC81
"Parked car operation"101
"Parked car ventilation"101
Parked car ventilation101
– activating switch-on
time102
– preselecting switch-on
times101
– switching on and off
directly101
Parking
– vehicle59
Parking aid, refer to Park
Distance Control PDC81
Parking brake59
– indicator lamp60
Parking lamps/low beams92
– replacing bulbs224
Parts and accessories, refer to
The individual vehicle5
Passenger-side mirror tilt
function52
"Pathway lighting"93
Pathway lighting93
"PDC"81
Personal Profile28
"Perspective"138
Phone book181Phone numbers
– deleting from phone
book185
– dialing183
– most recent numbers184
– selecting in phone book184
– Top 8184
Pinch protection system
– glass roof, electric40
– windows39
Placing a call, refer to
telephone owner's manual
"Play" for satellite radio161
Polish222
Pollen, refer to Microfilter/
activated-charcoal filter101
Position
– displaying144
– saving, refer to Storing
current position132
Power windows38
Power windows, refer to
Windows38
"Presets", displaying with the
radio154
"Presets" for satellite
radio161
Pressure, tires204
Pressure monitoring of tires,
refer to Flat Tire Monitor84
Pressure monitoring of tires,
refer to Tire Pressure
Monitor TPM85
Programmable buttons on the
steering wheel11
Programmable memory
keys21
Protection function, refer to
Pinch protection system
– glass roof, electric40
– windows39
Providing medical assistance,
refer to First add pouch230
Puncture
– Flat Tire Monitor84