BMW 2 SERIES CONVERTIBLE 2018 Owners Manual

SafetyVehicle
features
and
options
This chapter describes all standard, country- specific and optional features offered with theseries. It also describes features that are notnecessarily available in your vehicle, e. g., dueto the selected options or country versions.
This also applies to safety-related functions
and systems. When using these functions and systems, the applicable laws and regulations
must be observed.
Airbags
1Front airbag, driver2Front airbag, front passenger3Side airbag4Knee airbagFront
airbags
Front airbags help protect the driver and the front passenger by responding to frontal imj
pacts in which safety belts alone would not
provide adequate protection.
Side
airbagIn a lateral impact, the side airbag supports the
side of the body in the chest, lap, and head area.Knee
airbag
The knee airbag supports the legs in a frontal
impact.
Protective
action
Airbags are not triggered in every impact situaj
tion, e.g., in less severe accidents or rear-end collisions.Seite 121SafetyControls121
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Information
on
optimum
effect
of
the
airbags
WARNING
If the seat position is incorrect or the dej
ployment area of the airbags is impaired, the airbag system cannot provide protection as inj
tended and may cause additional injuries due
to triggering. There is a risk of injuries or danj
ger to life. Follow the information on achieving
the optimum protective effect of the airbag
system.'

Correct
functionWhen the ignition is switched on, the
warning lamp in the instrument cluster lights up briefly and thereby indicates
the operational readiness of the entire airbag
system and the belt tensioner.
Airbag
system
malfunctioning'yWarning lamp does not come on when the
ignition is turned on.'yThe warning lamp lights up continuously.
Automatic
deactivation
of
the
front-
seat
passenger
airbags
Concept
The system reads if the front passenger seat is
occupied by measuring the human body's rej sistance.
Front, knee and side airbag on the front pasj
senger's side are either activated or deactij
vated.
General
information Before transporting a child on the front pasj
senger seat, refer to the safety notes and inj structions for children on the front passengerseat, see Children.
Safety
information WARNING
To ensure the front-seat passenger airj
bag function, the system must be able to dej
tect whether a person is sitting in the front passenger seat. The entire seat cushion areamust be used for this purpose. There is a risk
of injuries or danger to life. Make sure that the front passenger keeps his or her feet in the
floor area.'

'yThe indicator lamp lights up
when a child is properly
seated in a child restraint fixj
ing system or when the seat
is empty. The airbags on the
front passenger side are not
activated.'yThe indicator lamp does not light up when, e.g., a correctly seated person of sufficient
size is detected on the seat. The airbags
on the front passenger side are activated.
Detected
child
restraint
systems
The system generally detects children seated in a child restraint system, particularly in child
restraint systems required by NHTSA at the
point in time when the vehicle was manufacj
tured. After installing a child restraint system,
make sure that the indicator light for the front-
seat passenger airbags lights up. This indij
cates that the child restraint system has been detected and the front-seat passenger airbags
are not activated.
Strength
of
the
driver's
and
front-seat
passenger
airbag
The explosive power that activates driver's/
front-seat passenger airbags very much dej
pends on the positions of the driver's/front
passenger seat.
To maintain the accuracy of this function over
the long term, calibrate the front seats as soon as a respective message appears on the Conjtrol Display.
Calibrating
the
front
seats WARNING
There is a risk of jamming when moving
the seats. There is a risk of injury or risk of property damage. Make sure that the area ofmovement of the seat is clear prior to any adjjustment.'

WARNING
Improperly executed work can lead to
failure, malfunction or unintentional triggering of the system. In the case of a malfunction, the
system might not trigger as intended even if
there is an accident severe enough to warrant
it. There is a risk of injuries or danger to life.
Have the system checked, repaired, dismanj
tled and scrapped by a dealerss service center
or another qualified service center or repair
shop.'

Tire
Pressure
Monitor
TPMConcept
The system monitors tire inflation pressure in
the four mounted tires. The system warns you
if there is a significant loss of pressure in one
or more tires.
General
information
Sensors in the tire valves measure the tire inj
flation pressure and, depending on the model,
the tire temperature.
With use of the system follow further informaj
tion found under Tire inflation pressure, refer
to page 214.
Functional
requirements
The following conditions must be met for the
system; otherwise, reliable flagging of a loss of
tire inflation pressure is not assured:'yAfter a tire or wheel replacement, a reset
was performed with the correct tire inflaj
tion pressure.'yAfter the tire inflation pressure was adj
justed to a new value, a reset was perj
formed.'yWheels with TPM wheel electronics.
Status
display
Current
status
The system status can be displayed on the Control Display, e.g., whether or not the sysj
tem is active.
Using iDrive:
1."My Vehicle"2."Vehicle status"3. "Tire Pressure Monitor"
The current status is displayed.
Tire
conditions
General
information
Tire and system status are indicated by the
color of the wheels and a SMS text message on the Control Display.
All
wheels
green
System is active and will issue a warning rej
lated to the tire inflation pressures stored durj ing the last reset.
One
to
four
yellow
wheels A flat tire or major drop in the tire inflationpressure has occurred in the indicated tires.
Gray
wheels It may not be possible to identify tire pressure
losses.
Possible causes:'yMalfunction.'yThe system is being reset.
Additonal
information
The status control display additionally shows
the current tire inflation pressures and, dej
pending on the model, tire temperatures. It
shows the actual values read; they may vary
depending on driving style or weather condij
tions.
Resetting
the
system Using iDrive:
1."My Vehicle"2."Vehicle status"3. "Tire Pressure Monitor"4.Start the engine but do not drive off.5.Reset tire inflation pressure: "Performreset".6.Drive away.Seite 126ControlsSafety126
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The wheels are displayed in gray and the foljlowing is displayed "Resetting Tire PressureMonitor

3.Reset the system.
If
there
is
a
significant
loss
of
tire
inflation
pressure
Message A yellow warning light is illuminated inthe instrument cluster.
In addition, a symbol with the affected tire apj
pears in a Check Control message on the Conj
trol Display.
SymbolPossible causeThere is a flat tire or a major loss in
tire inflation pressure.
No reset was performed for the sysj tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Measure
1.Reduce your speed and stop cautiously. Avoid sudden braking and steering maneujvers.2.Check whether the vehicle is fitted with
normal tires or run-flat tires.
Run-flat tires, refer to page 222, are laj
beled with a circular symbol containing the letters RSC marked on the tire's sidewall.
Actions
in
the
event
of
a
flat
tire
Normal
tires
1.Identify the damaged tire.
To do this, check the air pressure in all four
tires, for instance using the tire pressure gage of a flat tire kit.
If the tire inflation pressure in all four tires
is correct, the Tire Pressure Monitor may
not have been reset. In this case, perform the reset.If identification of flat tire damage is notpossible, please contact a dealerss servicecenter or another qualified service center
or repair shop.2.Repair the flat tire, e.g., with a flat tire kit or
by changing the wheel.
Use of sealant, for instance from the flat tire kit, may damage the TPM wheel electronics. In
this case, have the electronics checked and rej
placed at the next opportunity.
Run-flat
tires
Safety
information WARNING
Your vehicle handles differently with a
run-flat with no or low inflation pressure; for inj stance, your lane stability when braking is rejduced, braking distances are longer and theself-steering properties will change. There is a
risk of an accident.
Drive moderately and do not exceed a speed of 50 mph/80 km/h.'

Possible
driving
range
with
a
depressurized
tire
The possible driving range varies depending on the how the vehicle is loaded and used, e.g.,
speed, road conditions, external temperature.
The driving range may be less but may also be
more if an economical driving style is used.
If the vehicle is loaded with an average weight and used under favorable conditions, its possij
ble driving range will be up to 50 miles/80 km.
Vehicle
handling
with
damaged
tires
Vehicles driven with a damaged tire will handle
differently, potentially leading to conditions such as the following:'yGreater likelihood of swerving off course.'yLonger braking distances.'yChanged self-steering properties.
Modify your driving style. Avoid abrupt steerjing maneuvers or driving over obstacles, for inj
stance curbs or potholes.
Final
tire
failure
Vibrations or loud noises while driving can indij
cate the final failure of a tire.
Reduce speed and stop; otherwise, pieces of
the tire could come loose and cause an accij
dent.
Do not continue driving. Contact a dealerss
service center or another qualified service cenj
ter or repair shop.
System
limits
Temperature
The tire inflation pressure depends on the
tire's temperature.
Driving or exposure to the sun will increase the
tire's temperature, thus increasing the tire inj
flation pressure.
The tire inflation pressure is reduced when the tire temperature falls again.
These circumstances may cause a warning when temperatures fall very sharply.
Sudden
tire
pressure
loss The system cannot indicate sudden serious
tire damage caused by external circumstances.
Failure
to
perform
a
reset The system does not function properly if a rej
set has not been carried out, for instance a flat tire is reported though tire inflation pressuresare correct.
Malfunction The yellow warning light flashes and is
then illuminated continuously. A Check
Control message is displayed. It may
not be possible to identify tire pressure losses.
Examples and recommendations in the followj ing situations:'yA wheel without TPM wheel electronics is
mounted: have it checked by a dealerss
service center or another qualified service
center or repair shop as needed.'yMalfunction: have system checked by a
dealerss service center or another qualified service center or repair shop.'yThe system was unable to complete the
reset. Perform a system reset again.'yInterference caused by systems or devices
with the same radio frequency: after leavj
ing the area of the interference, the system automatically becomes active again.
Declaration
according
to
NHTSA/
FMVSS
138
Tire
Pressure
Monitoring
System
Each tire, including the spare (if provided)should be checked monthly when cold and injflated to the inflation pressure recommendedby the vehicle manufacturer on the vehicleplacard or tire inflation pressure label. (If your
vehicle has tires of a different size than the size
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indicated on the vehicle placard or tire inflation
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
system (TPMS) that illuminates a low tire presj
sure telltale when one or more of your tires is significantly 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 presj
sure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel efj ficiency and tire tread life, and may affect the
vehicle's handling and stopping ability. Please
note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the
level to trigger illumination of the TPMS low
tire pressure telltale. Your vehicle has also
been equipped with a TPMS malfunction indij
cator to indicate when the system is not operj
ating properly. The TPMS malfunction indicaj
tor is combined with the low tire pressure
telltale. When the system detects a malfuncj
tion, the telltale will flash for approximately one
minute and then remain continuously illumij
nated. This sequence will continue upon subj
sequent vehicle start-ups as long as the malj
function 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 replacej
ment or alternate tires or wheels on the vehicle
that prevent the TPMS from functioning propj
erly. Always check the TPMS malfunction tellj
tale 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.FTM
Flat
Tire
Monitor
Concept
The system detects tire inflation pressure loss
on the basis of rotation speed differences bej
tween the individual wheels while driving.
In the event of a tire inflation pressure loss, the
diameter and therefore the rotational speed of
the corresponding wheel changes. The differj
ence will be detected and reported as a flat
tire.
The system does not measure the actual inflaj
tion pressure in the tires.
Functional
requirements
The following conditions must be met for the
system; otherwise, reliable flagging of a loss of tire inflation pressure is not assured:'yAfter a tire or wheel replacement, an initialj
ization was performed with the correct tire
inflation pressure.'yAfter the tire inflation pressure was adj
justed to a new value, an initialization was performed.
Status
display
The current status of the flat tire monitor canbe displayed, for example, whether the RPA isactive.
About iDrive:
1."My Vehicle"2."Vehicle status"3. "Flat Tire Monitor"
The status is displayed.
Initialization
required
An initialization must be performed in the folj lowing situations:
'yAfter the tire inflation pressure has been
adjusted.'yAfter a tire or wheel replacement.Seite 130ControlsSafety130
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