BMW M4 2018 Owners Manual

5.Reset the tyre inflation pressure: "Performreset".6.Drive off.
The wheels are shown grey and the following
appears on the display: "Resetting Tyre
Pressure Monitor

If
there
is
a
significant
loss
of
tyre
inflation
pressure
Message A yellow warning lamp is illuminated in
the instrument cluster.
In addition, a symbol with the affected tyre is shown in a Check Control message on the
Control Display.SymbolPossible causeThere is a flat tyre or substantial
loss of tyre inflation pressure.
No reset has been performed on to the system. The system uses the
tyre inflation pressures saved durj
ing the last reset for the warning.
Measure
Reduce your speed and carefully stop the vej
hicle. Avoid violent or sudden braking and
steering manoeuvres.
What
to
do
in
the
event
of
a
flat
tyre
1.Identify the damaged tyre.
To do this, check the air pressure in all four
tyres, for example using the tyre inflation
pressure indicator of a flat tyre kit.
If all four tyres are inflated to the correct
tyre inflation pressures, the Tyre Pressure
Monitor might not have been reset. Perj form a reset.
If it is not possible to identify tyre damage, contact a Service Partner of the manufacj
turer or another qualified Service Partner or
a specialist workshop.2.Repair the flat tyre, for example using a flat tyre kit or by changing the wheel.
The use of sealant, for example a flat tyre kit,
can damage the TPM wheel electronics. In this case, have the electronics replaced at the next
opportunity.
System
limits
Temperature
The tyre inflation pressure depends on the
temperature of the tyre.
The tyre inflation pressure increases as the
tyre temperature increases, for example during
driving or due to exposure to sunlight.
Tyre inflation pressure decreases if the tyre
temperature drops.
Through this behaviour, a warning may be trigj
gered if there are major temperature drops, due to the given warning limits.
Sudden
loss
of
tyre
inflation
pressure
No warning can be given by the system of exj treme, sudden tyre failure caused by externalfactors.
Reset
not
carried
out
The system will not function correctly if a reset
has not been carried out, for example, a flat
tyre is reported in spite of the correct tyre
pressure.
Malfunction The yellow warning lamp flashes and isthen illuminated continuously. A Check
Control message is shown. Tyre presj
sure losses cannot be detected.
In these cases:'yA wheel without TPM wheel electronics is
fitted: have the wheels checked if necesj
sary.'yMalfunction: have the system checked.'yThe system was unable to complete the
reset. Perform a system reset again.'yFault due to systems or devices with the
same frequency: the system is automatij cally reactivated upon leaving the field of
interference.Seite 132ControlsSafety132
Online Edition for Part no. 01402981699 - VI/17

Runflat
indicator
RPA
Principle The system identifies a loss of tyre inflationpressure by comparing the rotational speeds
of the individual wheels during the journey.
If a tyre loses inflation pressure, its diameter
changes. This in turn alters the rotational
speed of the corresponding wheel. The differj
ence will be detected and reported as a flat
tyre.
The system does not measure the tyre inflaj
tion pressure as such.
Operating
requirements
The following requirements must be met for
the system, otherwise reliable signalling of a loss of tyre inflation pressure is not ensured:'yAfter every tyre or wheel change, an initialij
sation must be carried out with the correct
tyre inflation pressure.'yAn initialisation must be carried out after the tyre inflation pressure has been adjusjted to a new value.
Status
display
The current status of the runflat indicator can
be shown, for example whether the RPA is acj
tive.
Via iDrive:
1."My Vehicle"2."Vehicle status"3. "Flat Tyre Monitor"
The status is displayed.
Initialisation
required
An initialisation must be performed in the
following situations:
'yAfter adjusting the tyre inflation pressure.'yAfter a tyre or wheel change.Performing
initialisation
On initialisation, the current tyre pressures are
saved as a reference for detection of a flat tyre.
The initialisation is started by confirming the
correct tyre inflation pressures.
When driving with snow chains fitted, do not
initialise the system.
Via iDrive:1."My Vehicle"2."Vehicle status"3. "Flat Tyre Monitor"4.Start the engine but do not drive off.5.Start the initialisation: "Perform reset"6.Drive off.
Initialising is completed during the journey; this
process can be interrupted at any time.
Initialising resumes automatically when you
continue your journey.
Messages
Safety
note WARNING
A damaged normal tyre with too low tyre
inflation pressure, or no pressure at all impairs
driving properties, for example steering and braking. There is a danger of accidents. Do not
continue driving. Repair the flat tyre or replace the wheel.'

Measure1.Reduce your speed and carefully stop the
vehicle. Avoid violent or sudden braking and steering manoeuvres.2.Determine which wheel is damaged. To dothis, check the air pressure in all four tyres,for example using the tyre inflation presj
sure indicator of a flat tyre kit. If all tyres are inflated to the correct tyre inflationpresj
sures, the runflat indicator might not have
been initialised. In this case initialise the
system.3.Repair the flat tyre, for example using a flat tyre kit or by changing the wheel.
System
limits
In the following situations, the system could be
slow to respond or operate incorrectly:
'yA natural, even loss of tyre inflation presj surein all four tyres that occurs over time is
not detected. Consequently, check the tyre inflation pressure at regular intervals.'yNo warning can be given in the event of
sudden tyre failure caused by external facj tors.'yIf the system has not been initialised.'yWhen driving on snow-covered or slippery
surfaces.'yDynamic driving style: drive wheels slipj
ping, high lateral acceleration.'yDriving with snow chains.
Intelligent
Safety
Principle
Intelligent Safety enables Driver Assistance
Systems to be operated centrally.
Depending on equipment, Intelligent Safety
consists of one or more systems which can
help to avoid the risk of a collision. Each time
the engine is started via the start/stop button,
these systems are automatically active:
'yFront-end collision with light braking funcj
tion, see page 135.'yPerson warning, see page 138.
Safety
notes
WARNING
The system does not release you from
your personal responsibility to assess the visij
bility conditions and traffic situation correctly.
There is a danger of accidents. Adapt your driving style to the traffic conditions. Observe
the traffic situation and intervene actively if the
situation warrants it.'

Intelligent Safety button
Camera
The camera is located on the front side of the
rear-view mirror.
Keep the windscreen clean and clear in the area in front of the rear-view mirror.
Switching
on/off The Intelligent Safety Systems are active autoj
matically at the start of each journey.
Press button: the systems are
switched off again. The LED is extinj
guished.
Press button again: the systems are switched
on. LED is illuminated.
Intelligent Safety Settings can be adjusted on
the Control Display.
Front-end
collision
with
light
braking
function
Principle
The system can help avoid accidents. If an acj cident cannot be avoided, the system helps to
reduce the collision speed.
The system warns of the possible risk of collij sion and brakes automatically, as necessary.
The automatic braking intervention is done
with limited force and duration.
The system is controlled by a camera in the
area of the rear-view mirror.
The front-end collision warning is also availj
able if the Cruise Control is disabled.
When deliberately approaching a vehicle, the
front-end collision warning and braking interj
vention are activated later to avoid unjustified
system responses.
General The system will provide a warning from apj
proximately 5 km/h, approximately 3 mph in
two stages of any risk of collision with vehicles. The timing of these warnings may vary dejpending on the current driving situation.
Braking intervention is permitted up to a speed
of approximately 60km/h, 35 mph.
Detection
range
Objects detected by the system are taken into
account.
Safety
notes WARNING
The system does not release you from
your personal responsibility to assess the visij
bility conditions and traffic situation correctly. There is a danger of accidents. Adapt yourdriving style to the traffic conditions. Observethe traffic situation and intervene actively if the
situation warrants it.'

WARNING
Displays and warnings do not relieve you
of personal responsibility. System limitations can mean that warnings or system responses
are not issued or are issued too late, incorj rectly, or without justification. There is a danj
ger of accidents. Adapt your driving style to
the traffic conditions. Observe the traffic situaj
tion and intervene actively if the situation warj
rants it.'

Warning
with
braking
function
Display
If there is a risk of collision with a detected vej
hicle, a warning symbol is shown in the instruj
ment cluster and in the Head-Up Display.SymbolMeasureSymbol illuminates red: advance
warning.
Brake and increase the distance.Symbol flashes red and an acoustic signal sounds: acute warning.
Brake and perform an evasive maj
noeuvre, if necessary.
Advance
warning
An advance warning is shown, for example if a danger of collision is anticipated or there is avery short distance to a vehicle ahead.
The driver must intervene personally if there isan advance warning.
Acute
warning
with
braking
function
An acute warning is shown in the event of an
immediate collision if the vehicle approaches
an object with high differential speed.
The driver must intervene personally if there is
an advance warning. If necessary, the driver is
assisted by slight automatic brake intervention
if there is a risk of collision.
An acute warning can be triggered even withj
out a previous advance warning.
Brake
interventionThe warning prompts the driver to intervene
actively. Maximum braking force is used during a warning. In order for braking force support to
be used, it is necessary for the brake to be
pressed sufficiently quickly and powerfully. The system can also assist by applying the
brakes lightly if there is the risk of a collision.
The vehicle can be braked at low speed until it
comes to a stop.
Manual gearbox: when the vehicle is braked to
a stop, the engine may shut off.
The brakes are only applied if driving stability
has not been impaired, for example by deactij
vation of Dynamic Stability Control DSC.
Braking can be discontinued either by dej
pressing the accelerator pedal or by actively
moving the steering wheel.
The detection of objects can be restricted.
Take into account the detection range limits
and the functional restrictions.
System
limits
Safety
note WARNING
The system may respond not at all, too
late, incorrectly, or without justification due to limits of the system. There is a danger of accijdent or damage to property. Observe the inforj
mation on the system limits and intervene acj
tively if necessary.'

'yOn sharp bends.'yWhen Driving Stability Control Systems are
limited or deactivated, for example DSC
OFF.'yIf the field of view of the camera in the mirj
ror is soiled or covered.'yUp to 10 seconds after starting the engine
using the start/stop button.'yDuring the camera calibration process imj
mediately after vehicle delivery.'yWhen there is sustained glare effect due to oncoming light, for example the sun is low
in the sky.
Sensitivity
of
the
warnings
The greater the sensitivity of the warning setj tings, for example warning time, the morewarnings will be displayed. As a result, there
may be an increased number of premature or
unjustified warnings and reactions.
Person
warning
with
Citylight
braking
function
Principle The system can help to avoid accidents with
pedestrians.
The system warns of the possible risk of collij sion with pedestrians in the urban speed range and provides assistance with a light braking
function.
The system is controlled by the camera in the area of the rear-view mirror.
General Provided that the light conditions are suffij
ciently bright, the system operates and issues
warnings from approximately 10 km/h, approxij mately 6 mph up to approximately 60 km/h, apjproximately 35 mph if there is a risk of collision
with pedestrians and provides assistance by
briefly applying the brakes before a collision.
Persons are taken into account if they are locaj ted within the detection range of the system.
Detection
range
The detection zone in front of the vehicle conj sists of two parts:
'yCentral zone, arrow 1, directly in front ofthe vehicle.'yExtended zone, arrow 2, to the right and
left of central area.
There is a risk of collision if persons are in the
central zone. A warning is only given of perj
sons in the extended zone if they are moving
towards the central zone.
Safety
notes WARNING
The system does not release you from
your personal responsibility to assess the visij
bility conditions and traffic situation correctly. There is a danger of accidents. Adapt yourdriving style to the traffic conditions. Observethe traffic situation and intervene actively if the
situation warrants it.'

tion and intervene actively if the situation warj
rants it.'

The detection of objects can be restricted.
Take into account the detection range limits
and the functional restrictions.
System
limits
Safety
note WARNING
The system may respond not at all, too
late, incorrectly, or without justification due to
limits of the system. There is a danger of accij
dent or damage to property. Observe the inforj
mation on the system limits and intervene acj
tively if necessary.'