2009 BMW 128I CONVERTIBLE fuel pressure

Cockpit
12
Instrument cluster
1Speedometer
135i: with fuel gauge
2Indicator lamps for turn signals
3Indicator and warning lamps13
4Tachometer56
5Fuel gauge57
135i: engine oil temperature57
6Display for
>Clock56
>Outside temperature56
>Indicator and warning lamps627Display for
>Position of automatic transmission
*49
>Computer57
>Date of next scheduled service, and
remaining distance to be driven61
>Odometer and trip odometer56
>Initializing the Flat Tire Monitor
*66
>Resetting the Tire Pressure Monitor68
>Checking oil level115
>Settings and information59
8Resetting the trip odometer56

Reference
At a glance
Controls
Driving tips
Mobility
69
Message for low tire inflation pressure
The warning lamps come on in yellow
and red. In addition, a signal sounds.
There is a flat tire or substantial loss
of tire pressure.
1.Cautiously reduce speed to below 50 mph/
80 km/h. Avoid sudden braking and steer-
ing maneuvers. Do not exceed a speed of
50 mph/80 km/h.
If the car is not equipped with Run-
Flat Tires, refer to page112, the stan-
dard equipment by design, do not continue
driving. Otherwise a severe accident could
result after a tire puncture if you continue
driving.<
2.In the event of complete pressure loss,
0 psi/0 kPa, you can estimate the possible
distance for continued driving on the basis
of the following guidelines:
>With a light load:
1 to 2 persons without luggage:
approx. 155 miles/250 km
>With a medium load:
2 persons, cargo bay full, or 4 persons
without luggage:
approx. 95 miles/150 km
>With a full load:
4 persons, cargo bay full:
approx. 30 miles/50 km
Drive cautiously and do not exceed a
speed of 50 mph/80 km/h. In the event of
pressure loss, vehicle handling changes. This
includes reduced tracking stability in braking,
extended braking distance and altered natural
steering characteristics.
If unusual vibration or loud noises occur during
the journey, this may be an indication that the
damaged tire has finally failed. Reduce your
speed and pull over as soon as possible at a
suitable location. Otherwise parts of the tire
could come loose, resulting in an accident. Do
not continue driving. Instead, contact your
BMW center.<
Malfunction
The small warning lamp flashes in
yellow and then lights up continu-
ously; the larger warning lamp comes
on in yellow. No punctures can be
detected.
This type of message is shown in the following
situations:
>If there is a malfunction
Have the system checked.
>If a wheel without TPM electronics has
been mounted
>If TPM is temporarily malfunctioning due to
other systems or devices using the same
radio frequency.
Message for unsuccessful system
reset
The warning lamp lights up yel-
low.The system is not reset after a
tire has been changed, for example.
Check the tire inflation pressure and
reset the system, refer to page68.
Declaration according to NHTSA/
FMVSS 138
Tire Pressure Monitoring Systems
Each tire should be checked monthly when cold
and inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label. If
your vehicle has tires of a different size than the
size indicated on the vehicle placard or tire infla-
tion pressure label, you should determine the
proper tire inflation pressure for those tires. As
an added safety feature, your vehicle has been
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-

Things to remember when driving
96
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.

Reference
At a glance
Controls
Driving tips
Mobility
121
temperature can lead to component damage or
water penetration. Follow the operating instruc-
tions for the steam jet or 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 to Z
152
Everything from A to Z
Index
A
ABS Antilock Brake
System64
Accessories, refer to The
individual vehicle5
Accident, reporting, refer to
Emergency Request130
Activated-charcoal filter84
Active steering70
Adaptive Head Light76
Additives
– coolant117
– engine oil116
Airbags71
– sitting safely35
– warning lamp72
Air conditioner79
Air distribution
– automatic83
– individual80
Air flow rate80,83
Airing, refer to
Ventilation81,84
Air outlets, refer to Air
vents79
Air pressure, checking, refer
to Tire inflation
pressure106
Air recirculation, refer to
Recirculated-air
mode80,83
Air vents79
AKI, refer to Fuel
specifications104
Alarm system24
– avoiding unintentional
alarms25
– interior motion sensor25
– switching off an alarm25
– tilt alarm sensor25
All-season tires, refer to
Winter tires113Ambient air, refer to
Recirculated-air
mode80,83
Antifreeze
– coolant117
– washer fluid53
Antilock Brake System
ABS64
Anti-theft alarm system, refer
to Alarm system24
Anti-theft system19
Approved axle loads, refer to
Weights149
Approved gross vehicle
weight, refer to Weights149
Armrest, refer to Center
armrest
88
Ashtray90
Assistance systems, refer to
Dynamic Stability Control
DSC65
AUC Automatic recirculated-
air control83
Automatic
– air distribution83
– air flow rate83
– cruise control54
– headlamp control74
Automatic car wash, refer to
Car wash98
Automatic car washes120
Automatic climate control79
– automatic air distribution83
Automatic curb monitor42
Automatic lamps
– refer to Welcome lamps74
Automatic recirculated-air
control AUC83Automatic transmission with
Steptronic49
– interlock50
– selector lever lock50
– shiftlock50
– towing132
– tow-starting132
AUTO program for automatic
climate control83
Average fuel consumption58
– setting the units60
Average speed58
Avoiding unintentional
alarms25
Axle loads, refer to
Weights149
B
Backrests, refer to Seats36
Backrest width adjustment37
Back seats, refer to Rear seats
– adjusting head restraints38
Backup lamp, replacing
bulb127
Bag for skis, refer to Ski
bag92
Band-aids, refer to First-aid
pouch130
Bar, refer to Tow-starting,
towing away133
Battery128
– charging128
– disposal27,128
– jump starting131
– temporary power failure128
Battery renewal
– remote control for vehicle27
Being towed132
Belts, refer to Safety belts41
Belt tensioner, refer to Safety
belts41

Reference
At a glance
Controls
Driving tips
Mobility
155
Doors, emergency
operation22
DOT Quality Grades110
Draft-free ventilation81,84
Drinks holders, refer to Cup
holders89
Drive-off assistance, refer to
DSC65
Drive-off assistant66
Driving lamps, refer to Parking
lamps/low beams74
Driving notes96
Driving off on hills, refer to
Drive-off assistant66
Driving stability control
systems64
Driving through water98
Driving tips, refer to Driving
notes96
Dry air, refer to Cooling
function84
DSC Dynamic Stability
Control65
DTC Dynamic Traction
Control65
– indicator lamps65
Dynamic Brake Control
DBC65
Dynamic Stability Control
DSC65
Dynamic Traction Control
DTC
– indicator lamps66
E
EBV Electronic brake-force
distribution65
Electrical malfunction
– door lock22
– fuel filler door104
– glass roof30
Electronic brake-force
distribution EBV65
Electronic oil level check115
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC65Emergency operation, refer to
Manual operation
– door lock22
– fuel filler door104
– glass roof30
– transmission lock, automatic
transmission51
Emergency release, luggage
compartment lid24
Emergency Request130
Emergency services, refer to
Roadside Assistance130
Energy, saving
– saving fuel96
Engine
– breaking in96
– data146
– speed146
– starting48
– starting, convenient
access26
– switching off48
Engine compartment115
Engine coolant, refer to
Coolant117
Engine oil
– adding116
– additives116
– BMW Maintenance
System118
– checking level115
– intervals between changes,
refer to Service
requirements61
– specified engine oils116
Engine output, refer to Engine
data146
Engine speed, refer to Engine
data146
Engine starting, refer to
Starting the engine48
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC65
Event data recorders119
Exhaust system, refer to Hot
exhaust system97Exterior mirrors41
– adjusting41
– automatic dimming
feature43
– automatic heating42
– folding in and out42
Eyes
– for tow-starting and towing
away132
– for tying down loads100
F
Failure messages, refer to
Check Control62
Failure of an electrical
consumer128
False alarm, refer to Avoiding
unintentional alarms25
Fastening safety belts, refer to
Safety belts41
Filter of automatic climate
control, refer to Microfilter/
activated charcoal filter84
Filter of heating or air
conditioner, refer to
Microfilter81
First aid pouch130
Fixture for remote control,
refer to Ignition lock47
Flash when locking/
unlocking21
Flat tire
– Run-Flat Tires112
– Tire Pressure Monitor
TPM68
Flat Tire Monitor FTM66
– indicating a flat tire67
– initializing the system66
– malfunction67
– system limits66
Flat tires, refer to Tire
condition111
Fog lamps77
– indicator lamp77,134
Footbrake, refer to Braking
safely98
Footwell lamps77
For your own safety5

Everything from A to Z
156 Front airbags71
Front seat setting35
Frost, removing from
windows, refer to Defrosting
windows81,84
FTM, refer to Flat Tire
Monitor66
Fuel104
– gauge57
– high-quality brands104
– quality104
– specifications104
– tank contents, refer to
Capacities150
Fuel clock, refer to Fuel
gauge57
Fuel consumption display,
refer to Average fuel
consumption58
Fuel consumption statistics,
refer to Average fuel
consumption58
Fuel display, refer to Fuel
gauge57
Fuel filler door104
– releasing in the event of
electrical malfunction104
Fuses128
G
Garage door opener, refer to
Integrated universal remote
control85
Gasoline, refer to Required
fuel104
Gasoline display, refer to Fuel
gauge57
Gear change
– with automatic
transmission50
– with manual transmission49
Gear display, with automatic
transmission49
Gearshift lever
– automatic transmission with
Steptronic50
– manual transmission49
General driving notes97Glass roof, electric29
– closing after electrical
malfunction30
– convenient operation22
– opening, closing29
– operation with convenient
access26
– pinch protection system29
– raising29
– remote control20
Glove compartment88
Grills, refer to Air vents79
Gross vehicle weight, refer to
Weights149
H
Halogen lamps
– replacing bulbs125
Handbrake, refer to Parking
brake49
Hands-free system14
Hazard warning flashers14
Head airbags71
Headlamp control,
automatic74
Headlamp cover125
Headlamp flasher51
Headlamps
– replacing bulbs125
Head restraints37
Heated
– seats39
Heated mirrors42
Heating79
– mirrors42
– seats39
– steering wheel43
Heating, rear window81,84
Heating and ventilation79
Heating during a stop83
Heavy loads, refer to Stowing
cargo99
Height, refer to
Dimensions147
Height adjustment
– steering wheel43High beams76
– indicator lamp134
– replacing bulbs125
High-pressure
washer120,121
High water, refer to Driving
through water98
Hills98
Holders for cups89
Hood114
Hot exhaust system97
Hydraulic brake assist, refer to
Dynamic Brake Control65
Hydroplaning97
I
Ice warning, refer to Outside
temperature
warning56
Identification marks
– tire coding110
Ignition47
– switched off47
– switched on47
Ignition key, refer to
Integrated key/remote
control18
Ignition key position 1, refer to
Radio readiness47
Ignition key position 2, refer to
Ignition on47
Ignition lock47
Imprint2
Indicator and warning
lamps13,134
– Tire Pressure Monitor
TPM69
Indicator lighting, refer to
Instrument lighting77
Individual air distribution80
Individual settings, refer to
Personal Profile18
Inflation pressure, tires106
Inflation pressure monitoring,
refer to Tire Pressure
Monitor TPM68

Everything from A to Z
158 Mobile phone, refer to the
separate Owner's Manual
Modifications, technical, refer
to For your own safety5
Monitoring system for tire
pressures, refer to Flat Tire
Monitor66
Multifunctional steering
wheel, refer to Buttons on
the steering wheel11
Multifunction switch
– refer to Turn signals/
headlamp flasher51
– refer to Wiper system52
N
Neck support, refer to Head
restraints37
Nets, refer to Storage
compartments89
New tires112
Number of cylinders, refer to
Engine data146
O
OBD socket, refer to Socket
for On-Board Diagnosis119
Octane ratings, refer to Fuel
specifications104
Odometer56
Oil, refer to Engine oil115
Oil consumption115
Oil level115
Old batteries, refer to
Disposal128
Onboard tool kit124
Opening and closing
– convenient access26
– from inside22
– from outside19
– using the door lock22
– via the remote control19
Outlets, refer to
Ventilation81,84
Output, refer to Engine
data146Outside temperature
display56
– changing unit of measure60
– on computer60
Outside temperature
warning56
Overriding selector lever
lock51
P
Paintwork care121
Park assistant, refer to Park
Distance Control64
Park Distance Control PDC64
Parking
– vehicle48
Parking aid, refer to Park
Distance Control PDC64
Parking brake49
– indicator lamp49
– manual activation49
Parking lamps/low beams74
– replacing bulbs125
Parts and accessories, refer to
The individual vehicle5
Passenger-side mirror tilt
function42
Pathway lighting74
Personal Profile18
Pinch protection system
– glass roof, electric29
– windows28
Placing a call, refer to
telephone owner's manual
Polish123
Pollen, refer to Microfilter81
Pollen, refer to Microfilter/
activated-charcoal filter84
Power windows27
Power windows, refer to
Windows27
Pressure, tires106
Pressure monitoring of tires,
refer to Flat Tire Monitor66
Pressure monitoring of tires,
refer to Tire Pressure
Monitor TPM68Programmable buttons on the
steering wheel11
Protection function, refer to
Pinch protection system
– glass roof, electric29
– windows28
Providing medical assistance,
refer to First add pouch130
Puncture
– Flat Tire Monitor66R
Radio position, refer to Radio
readiness47
Radio readiness47
– switched off47
– switched on47
Rain sensor53
Reading lamps78
Rear lamps, refer to Tail
lamps126
Rear-mounted luggage
rack101
Rear seats
– adjusting head restraints38
– folding down backrests91
Rearview mirror, refer to
Mirrors41
Rear window defroster81,84
Recirculated-air mode80,83
Recirculation of air, refer to
Recirculated-air
mode80,83
Reflectors, refer to Tail
lamps126
Refueling104
Releasing
– hood114
Remaining distance, refer to
Cruising range58