BMW X3 2018 Owners Manual

Reset the Tire Pressure Monitor TPM, refer to
page 281.
Replace the nonworking tire and the sealant
container of the Mobility System promptly.
Snow
chains
Safety
information WARNING
With the mounting of snow chains on unj
suitable tires, the snow chains can come into contact with vehicle parts. There is a risk of acj
cidents or risk of damage to property. Only
mount snow chains on tires that are desigj nated by their manufacturer as suitable for the
use of snow chains.'

Safety
informationWARNING
The display of the target pressures is not
a substitute for the tire inflation pressure dej
tails on the vehicle. Incorrect entries in the tire
settings can lead to incorrect target tire inflaj tion pressure values. In this case, it cannot beguaranteed that the notification of a loss of tire
inflation pressure will be reliable. There is a risk of injury and risk of damage to property. Enj
sure that the tire sizes of the mounted tires are
entered correctly and match the details on the
tires and on the vehicle.'

Current
tire
inflation
pressure
The current tire inflation pressure is displayed
for each tire.
The current tire inflation pressures may
change during driving operation or depending
on the external temperature.
Current
tire
temperature
The current tire temperatures are displayed, depending on the model.
The current tire temperatures may change
during driving operation or depending on the
external temperature.
Target
pressure
The target pressure for the tires on the front
and rear axles is displayed.
The target pressures are values stored in the
vehicle.
The specified target pressures take the influj
ence of driving operation and external temperj
ature on the tire temperature into account. The
appropriate target pressure is always disj
played, independent of the weather situation,
tire temperatures and driving times.
The displayed target pressure may change and
may differ from the tire inflation pressure dej
tails on the door pillar of the driver's door. The
tire inflation pressure can thus be corrected to the value of the displayed target pressures.
The target pressure is immediately adjusted if the vehicle load is changed in the tire settings.
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.
Any existing messages are not deleted if the
displayed target pressure is not reached after
the tire inflation pressure is corrected.All
wheels
green'yThe system is active and bases warnings
on the displayed target pressures.'yFor tires with special approval: the system
is active and bases warnings on the tire inj flation pressures stored during the last rej
set.
One
to
four
yellow
wheels
A flat tire or major drop in the tire inflation
pressure has occurred in the indicated tires.
Gray
wheels It may not be possible to identify tire inflationpressure losses.
Possible causes:
'yMalfunction.'yDuring tire inflation pressure measurej ment, after confirmation of the tire setjtings.'yFor tires with special approval: the system
is being reset.
For
tires
with
special
approval:
performing
a
reset
Via iDrive:
1."My Vehicle"2."Vehicle status"3."Tire Pressure Monitor"4.Switch on drive-ready state and do not
drive off.5.Reset tire inflation pressure: "Perform reset".6.Drive away.
The wheels are displayed in gray and the foljlowing is displayed "Resetting Tire PressureMonitor

The reset is completed automatically while
driving.
After a successfully completed reset, the
wheels on the Control Display are shown in green and the following is displayed: "TirePressure Monitor active. See label for
recommended pressures.".
You may interrupt this trip at any time. When you continue the reset resumes automatically.
Messages:
for
tires
without
special
approval
General
information
A low tire inflation pressure may cause the
DSC Dynamic Stability Control to be switched
on.
Safety
information WARNING
A damaged regular tire with low or missj
ing tire inflation pressure impacts handling, such as steering and braking response. Run-flat tires can maintain limited stability. There is
a risk of an accident. Do not continue driving if the vehicle is equipped with normal tires. Foljlow the information on run-flat tires and continj
ued driving with these tires.'

Measure1.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 276, are laj
beled with a circular symbol containing the letters RSC marked on the tire's sidewall.
Messages:
for
tires
with
special
approval
General
information
A low tire inflation pressure may cause the DSC Dynamic Stability Control to be switched
on.
Safety
information WARNING
A damaged regular tire with low or missj
ing tire inflation pressure impacts handling,
such as steering and braking response. Run-
flat tires can maintain limited stability. There is
a risk of an accident. Do not continue driving if
the vehicle is equipped with normal tires. Folj
low the information on run-flat tires and continj
ued driving with these tires.'

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 276, 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.
Check the tire inflation pressure in all four tires, for instance using the tire pressuregage of a flat tire kit.
For tires with special approval: if the tire inj
flation pressure in all four tires is correct,
the TPM may not have been reset. In this case, perform the reset.If tire damage cannot be found, contact a
dealerss service center 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. Have
the electronics replaced at the next opportuj
nity.
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 the
self-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.'

3.Check the tire inflation pressure in all fourtires at the next opportunity.
For tires with special approval: if the tire inj
flation pressure in all four tires is correct,
the Tire Pressure Monitor may not have
been reset. In this case, perform the reset.
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.
Following a temperature-related warning, the
target pressures are displayed on the Control
Display again after a short distance.
Sudden
tire
pressure
loss The system cannot indicate sudden serious
tire damage caused by external circumstances.
Failure
to
perform
a
reset Tires with special approval: the system will notfunction correctly if a reset was not performed,
for example a flat tire may be indicated alj
though the tire inflation pressures are correct.
Malfunction
Message 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.
Measure'yA wheel without TPM wheel electronics is
mounted: have the wheels checked, if
needed.'yA wheel without TPM wheel electronics,
such as an emergency wheel, is mounted: have the wheels checked, if needed.'yMalfunction: have the system checked.Seite 287Wheels
and
tiresMobility287
Online Edition for Part no. 01402984955 - X/17

'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.'yFor tires with special approval: the system
was unable to complete the reset. Perform
a system reset 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 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 losson 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.Seite 288MobilityWheels
and
tires288
Online Edition for Part no. 01402984955 - X/17

Status
displayThe current status of the flat tire monitor canbe displayed, for instance whether the RPA isactive.
Via 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.
Performing
initialization
When initializing, the set tire inflation presj sures serve as reference values in order to dej
tect a flat tire. Initialization is started by conj
firming the tire inflation pressures.
Do not initialize the system when driving with
snow chains.
Via iDrive:
1."My Vehicle"2."Vehicle status"3."Flat Tire Monitor"4.Switch on drive-ready state and do not
drive off.5.Start the initialization with: "Perform reset"6.Drive away.
The initialization is completed while driving, which can be interrupted at any time.
The initialization automatically continues when
driving resumes.
Messages
General
information
When a flat tire is indicated, DSC Dynamic Staj
bility Control is switched on, if needed.
Safety
information WARNING
A damaged regular tire with low or missj
ing tire inflation pressure impacts handling,
such as steering and braking response. Run-
flat tires can maintain limited stability. There is
a risk of an accident. Do not continue driving if
the vehicle is equipped with normal tires. Folj
low the information on run-flat tires and continj
ued driving with these tires.'

To do this, check the tire inflation 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 Flat Tire Monitor may not
have been initialized. In this case, initialize
the system.
If identification of flat tire damage is not possible, 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.
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 rej
duced, braking distances are longer and the
self-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.'