2012 BMW 135I belt

Technology for driving comfort and safety
92 detected and that the front passenger air-
bags are deactivated.<
>The indicator lamp does n o t c o m e o n w h e n ,
for example, a person of sufficient size and
in a correct sitting position is detected on
the seat.
The front and side airbags for the front pas-
senger are activated.
>The indicator lamp does not light up if the
seat is empty.
The front and side airbags for the front pas-
senger are not activated.
Operational readiness of airbag system
As of radio readiness, refer to page57, the
warning lamp lights up briefly to indicate that
the entire airbag system and the belt tensioners
are operational.
Airbag system malfunction
>Warning lamp does not light up at radio
readiness or beyond.
>Warning lamp remains permanently on.
In the event of a fault in the airbag system,
have it checked without delay; otherwise,
there is the risk that the system will not function
as intended even if a sufficiently severe acci-
dent occurs.<
Convertible: rollover
protection system
The rollover protection system is activated
automatically in the event of an accident, a crit-
ical driving situation, an extreme tilt in the car's
longitudinal axis or upon loss of ground contact. The protection bars behind the rear head
restraints deploy within fractions of a second.
As a supplementary system to the reinforced
windshield frame, the rollover protection sys-
tem ensures that the necessary headroom is
maintained for all vehicle occupants.
Always keep the area of movement of the
rollover protection system clear.
In minor accidents, you are protected by the
fastened safety belt and, depending on acci-
dent severity, by the safety belt tensioner and
multi-phase airbag retention system.<
Resetting
If the rollover protection system was not
impacted after being automatically activated, it
can be reset by lowering the protection bars to
their original positions. This does not require
tools.
1.Push the locking lever to one side and hold
it there.
2.Push the protection bar halfway down from
above.
3.Release the locking lever.
4.Push the protection bar down until it snaps
into place.

Things to remember when driving
120
Stowing cargo
Coupe
Convertible
>Position heavy objects as low and as far for-
ward as possible, ideally directly behind the
respective seat backrests.
>Cover sharp edges and corners.
>For very heavy cargo when the rear seat is
not occupied, secure each safety belt in the
opposite buckle.
Securing cargo
>Secure smaller and lighter items using draw
straps
*.
>Heavy-duty cargo straps
* for securing
larger and heavier objects are available at
your BMW center. To attach the cargo
straps, there are two lashing eyes on the
inside wall of the cargo area.
Comply with the information enclosed with
the load-securing devices.
Always position and secure the cargo as
described above, so that it cannot endan-
ger the car's occupants, for example if sudden
braking or swerving is necessary.
Never exceed either the approved gross vehicle weight or either of the approved axle loads, refer
to page245, as excessive loads can pose a
safety hazard, and may also place you in viola-
tion of traffic safety laws.
Heavy or hard objects should not be carried
loose inside the car, since they could be thrown
around, for example as a result of heavy braking,
sudden swerves, etc., and endanger the occu-
pants.
Only attach the cargo straps using the lashing
eyes shown in the illustration. Do not secure
cargo with the anchors for tether straps, refer to
page55, otherwise, these could be damaged.<
Coupe: roof-mounted
luggage rack*
A special rack system is available as an option
for your BMW. Comply with the directions given
in the installation instructions.
Mounting points
Fold open the cover.
Loading roof-mounted luggage rack
Because roof racks raise the vehicle's center of
gravity when loaded, they have a major effect on
vehicle 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 applicable data under Weights
on page245.
The roof load must be distributed uniformly and
should not be too large in area. Heavy items
should always be placed at the bottom. Be sure

Navigation
Entertainment
Driving tips
145Reference
At a glance
Controls
Communications
Mobility
Treble, bass, balance, fader
>"Treble": height adjustment.
>"Bass": depth adjustment.
>"Balance": left/right volume distribution
>"Fader": front/rear volume distribution
Adjustments
1."CD/Multimedia", "Radio" or "Settings".
2."Tone"
3.Select the desired tone setting.
4.To adjust: turn the controller.
5.To store: press the controller.
Equalizer*
You can set individual sound frequency ranges.
1."CD/Multimedia", "Radio" or "Settings".
2."Tone"
3."Equalizer"4.Select the desired setting.
5.To adjust: turn the controller.
6.To store: press the controller.
Multi-channel playback, surround*
You can choose between stereo and multi-
channel playback, surround.
1."CD/Multimedia", "Radio" or "Settings".
2."Tone"
3."Surround"
When surround is activated, multi-channel
playback is simulated when playing an audio
track in stereo.
Volume
>"Speed volume": volume is adapted
depending on the speed
>"PDC
"*: volume of the PDC acoustic signal
relative to the entertainment sound output
>"Gong": volume of the acoustic signal, e.g.
for the acoustic seat belt warning relative to
the entertainment sound output
>"Microphone": volume of the microphone
during a phone conversation.
>"Loudspeak.": volume of the speaker dur-
ing a phone conversation

Wheels and tires
212
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 … 1011 means that the
tire was manufactured in week 10 of 2011.
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.< 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,
(before 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 1011

Care
226 to become brittle prematurely. Therefore, fre-
quently clean the leather of dust using a cloth or
vacuum cleaner.
Clean light-colored leather more frequently as
dust and dirt are more noticeable.
Treat the leather at least once every two
months using a leather lotion as dirt and grease
will gradually attack the leather's protective
layer.
Carpet and floor mats*
Keep floor mats, carpet, and other objects
out of the movement range of the pedals;
otherwise, they may inhibit the function of the
pedals during driving.
Do not place additional floor mats onto an exist-
ing one or onto other objects.
Only use floor mats that have been approved for
the vehicle and can be appropriately fastened.
Make sure that the floor mats are securely fas-
tened again after they have been removed, e.g.
for cleaning.<
Interior plastic parts
>Imitation leather surfaces
>Lamp glasses
>Display pane of instrument cluster
>Matte parts
Clean with water and solvent-free plastic
cleaner if necessary.
Fine wood parts
Clean fine wood trim and fine wood parts with a
damp cloth. Wipe dry with a soft cloth.
Safety belts
Dirty belt straps impede the reeling action and
thus have a negative impact on safety.
Do not clean chemically, as this may
destroy the webbing.<
Interior sensors/cameras
To clean interior sensors and cameras, e.g. of
the High-beam Assistant, use a lint-free cloth
moistened with glass cleaner.
Displays
To clean displays, e.g. of the radio or instrument
cluster, use a cleaning cloth for displays or a
soft, non-abrasive, lint-free cloth.
Avoid applying excessive pressure when
cleaning the displays; otherwise, damage
may occur.<
Do not use chemical or abrasive house-
hold cleaning agents. Keep all types of
fluid away from the device. Otherwise, surfaces
or electrical components may be corroded or
damaged.<
CD/DVD drives
Do not use a cleaning CD, as it may dam-
age parts of the drive.<
Vehicle storage
If your vehicle is to be decommissioned for
longer than three months, your BMW center or
a workshop that operates according to BMW
specifications will be glad to advise you.

Reference 255
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Backup lamp, replacing
bulb231
Bag for skis, refer to Ski
bag110
Band-aids, refer to First aid
pouch235
Bar, refer to Tow-starting,
towing away237
Base plate for telephone or
mobile phone
– refer to Snap-in adapter186
Bass, tone setting144
Battery232
– charging232
– disposal37,232
– jump-starting235
– replacing232
– temporary power failure232
Battery renewal
– remote control for vehicle37
Being towed237
Belts, refer to Safety belts50
Belt tensioner, refer to Safety
belts50
Beverage holders, refer to
Cupholders108
Blower, refer to Air
volume101
Bluetooth, activating/
deactivating177
Bluetooth audio169
– disconnecting an audio
connection171
– pairing a device169
– playback170
– unpairing device171
– What to do if...171
BMW
– car shampoo224
BMW Assist198
– updating202
BMW Maintenance
System221
BMW Online*200
BMW TeleServices199
Bottle holders, refer to
Cupholders108
Brake Assist, refer to Dynamic
Brake Control83Brake fluid
– service requirements74
Brake Force Display90
Brake lamps
– Brake Force Display90
– replacing bulb231
Brake pads, breaking in116
Brake pedal, refer to Braking
safely118
Brake rotors118
– brakes116
– breaking in116
Brakes
– ABS83
– BMW Maintenance
System221
– braking safely118
– breaking in116
– parking brake59
– service requirements74
Brake system116
– BMW Maintenance
System221
– breaking in116
– disc brakes118
Breakdown services, refer to
Roadside Assistance234
Breaking in the clutch116
Break-in period116
Bulb changing, refer to Lamps
and bulbs227
Button for starting the
engine57
Buttons on the steering
wheel11
C
Calendar193
– displaying appointment193
– selecting calendar day193
California Proposition 65
warning6
Call
– accepting181
– ending181
– muting the microphone182
– rejecting181Calling, refer to Phone
numbers, dialing181
Calling, refer to Telephone
owner's manual
Calls
– with multiple parties181
Can holders, refer to
Cupholders108
Capacities246
Capacity of the cargo area245
Car battery, refer to Vehicle
battery232
Car care, refer to Care223
Care223
– automatic car washes223
– care products223
– carpets226
– CD/DVD drives226
– chrome parts225
– convertible top224
– displays226
– exterior223
– fine wood parts226
– headlamps224
– high-pressure washer224
– interior225
– leather225
– light-alloy wheels225
– paintwork225
– plastic parts226
– rubber seals225
– safety belts226
– sensors and cameras226
– upholstery and cloth
trim225
– washing the car
manually224
– windows224
Cargo, securing120
Cargo area
– capacity245
– Comfort Access36
– enlarging, refer to Through-
loading system109
– lamp, refer to Interior
lamps98
– lid, refer to Trunk lid
33
– opening from outside33

Everything from A to Z
258 Driving through water118
Driving tips, refer to Driving
notes116
Dry air, refer to Cooling
function101
DSC Dynamic Stability
Control83
DTC Dynamic Traction
Control84
– indicator lamps84
DVD
– country codes157
– settings158
– video playback157
DVD menu158
DVD player, refer to CD
player155
DVD video157
Dynamic Brake Control
DBC83
Dynamic destination
guidance140
Dynamic Stability Control
DSC83
Dynamic Traction Control
DTC84
– indicator lamps84
E
EBV Electronic brake-force
distribution83
Eject button, refer to Buttons
on the CD/DVD player144
Electrical defect
– 7-gear Sport automatic
transmission with double
clutch65
Electrical malfunction
– door lock32
– fuel filler flap206
– glass roof40
Electronic brake-force
distribution EBV83
Electronic oil level check217
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC83
Email192Emergency operation, refer to
Manual operation
– door lock32
– fuel filler flap206
– glass roof40
– transmission lock, automatic
transmission61
Emergency release, trunk
lid34
Emergency Request234
Emergency services, refer to
Roadside Assistance234
Energy, saving
– saving fuel116
Engine
– breaking in116
– data242
– speed242
– starting58
– starting, Comfort Access35
– switching off58
Engine compartment217
Engine coolant, refer to
Coolant219
Engine oil
– adding219
– additives219
– alternative oil types219
– approved engine oils219
– BMW Maintenance
System221
– checking level217
– intervals between changes,
refer to Service
requirements74
Engine oil level, checking217
Engine output, refer to Engine
data242
Engine speed, refer to Engine
data242
Engine starting, refer to
Starting the engine58
Entering the postal code for
navigation126
Entry map for destination130
Equalizer, tone setting145
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC83Exhaust system, refer to Hot
exhaust system117
Exterior mirrors51
– adjusting51
– automatic dimming
feature52
– automatic heating52
– folding in and out51
External devices
– random play sequence168
– software update172
Eyes
– for tow-starting and towing
away236
– for tying down loads120
F
Failure messages, refer to
Check Control78
Failure of an electrical
consumer232
False alarm, refer to Avoiding
unintentional alarms35
Fastening safety belts, refer to
Safety belts50
Fastest route for
navigation134
Fast forward
– CD changer157
– CD player157
Filter of automatic climate
control, refer to Microfilter/
activated charcoal filter102
First aid pouch235
Fixture for remote control,
refer to Ignition lock57
Flash when locking/
unlocking30
Flat tire
– run-flat tires214
– Tire Pressure Monitor
TPM86
Flat Tire Monitor FTM84
– indicating a flat tire85
– initializing the system85
– system limits84
Flat tires, refer to Tire
condition213

Reference 263
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Providing medical assistance,
refer to First aid pouch235
Puncture
– Flat Tire Monitor84
R
Radio
– controls144
– HD Radio148
– satellite radio150
– selecting waveband147
– storing stations147
– switching on/off144
– tone control144
– volume144
Radio position, refer to Radio
readiness57
Radio readiness57
– switched off58
– switched on57
Rain sensor67
Random play sequence
– external devices168
Random sequence
– music collection164
Reading aloud194
Reading lamps98
Rear lamps, refer to Tail
lamps230
Rear seats
– adjusting head restraints48
– folding down backrests109
Rearview mirror, refer to
Mirrors51
Rear window defroster101
Reception
– quality148
– radio station148
Recirculated air mode101
Recirculation of air, refer to
Recirculated air mode101
Redialing183
Reflectors, refer to Tail
lamps230
Refueling206
Releasing
– hood216Remaining distance, refer to
Computer72
Remaining distance, refer to
Cruising range72
Reminders194
Remote control28
– battery renewal37
– Comfort Access35
– garage door opener104
– malfunctions31,36
– removing from the ignition
lock57
– service data221
– trunk lid30
Remote control key, refer to
Integrated key/remote
control
28
Replacement fuses, refer to
Fuses232
Replacement remote
control28
Replacing bulbs, refer to
Lamps and bulbs227
Replacing tires, refer to New
wheels and tires214
Reporting safety defects7
Reserve warning, refer to Fuel
gauge71
Reservoir for washer
systems68
Reset, refer to Resetting tone
settings146
Restraint systems, refer to
Safety belts50
Restraint systems for
children54
Retreaded tires214
Reverse
– CD changer157
– CD player157
Reverse gear63
– automatic transmission with
Steptronic60
– manual transmission59
Road map136
Roadside
Assistance199,234Roadside parking lamps96
– replacing bulbs228
Roadworthiness test, refer to
Service requirements74
Rollover protection system,
Convertible92
– resetting92
Roof load capacity245
Roof-mounted luggage
rack120
Rope, refer to Tow-starting,
towing away237
Rotary/pushbutton control,
refer to Controller16
Route134,135
– bypassing sections135
– changing134,135
– changing criteria134
– displaying streets or towns/
cities135
– map view136
– selecting134
Route instructions, refer to
Destination guidance
through voice
instructions136
Route map, refer to Map
view136
Route section, changing135
Route selection134
RSC Runflat System
Component, refer to Run-
flat tires214
Runflat System Component
RSC, refer to Run-flat
tires214
Run-flat tires214,215
– flat tire85
– inflation pressure208
– new tires214
– remaining driving distance,
refer to Indication of a flat
tire85
– tire replacement214
Runflat tyres, refer to Run-flat
tires214