Page 81 BMW 528I 2008 Repair Manual

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TPM Tire Pressure Monitor*
The concept
TPM checks the tire inflation pressure in the
four mounted tires. The system reports when
the tire inflation pressure has dropped consid-
erably in one or several tires.
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be reset at the correct tire
inflation pressure.
Always use wheels with TPM electronics, oth-
erwise fault-free operation of the system is not
ensured.
Reset the system again after each correc-
tion of the tire inflation pressure and after
every tire or wheel change.<
System limits
TPM cannot announce sudden serious tire
damage caused by external influences.
The system does not function properly if it has
not been reset, e.g. a flat tire is reported despite
correct tire inflation pressures.
The system is inactive and cannot display a flat
tire if a wheel has been mounted without TPM
electronics, e.g. a compact wheel, or if TPM is
temporarily interfered with by other systems or
devices which use the same radio frequency.
Status display on Control Display
The tire and system status is indicated by the
color of the tires.
TPM takes the fact that the tire pressure
changes during driving into account. A correc-
tion is only required if requested by TPM with
the color.
Green
The tire pressure matches the learned set state.
"TPM active" is displayed on the Control Dis-
play.
One wheel is yellow
Flat tire or a major drop in inflation pressure in
the indicated tire. A message appears on the
Control Display.
All wheels are yellow
Flat tire or a major drop in inflation pressure in
several tires. A message appears on the Control
Display.
Gray
The system cannot detect a flat tire.
Reasons for this can be:
>TPM is being reset
>Temporary interference due to systems or
devices which use the same radio fre-
quency
>Malfunction
Resetting system
Reset the system again after each correc-
tion of the tire inflation pressure and after
every tire or wheel change.<
Resetting finishes during driving, which can be
interrupted at any time. When driving resumes,
resetting is continued automatically. Do not
reset the system when driving with a compact
wheel
*.
iDrive, for operating principle refer to page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.
4.Select "Vehicle / Tires" and press the con-
troller.
5.Change to upper field if necessary. Turn the
controller until "TPM" is selected and press
the controller.

Technology for comfort, convenience and safety
98 6.Start the engine, but do not start driving.
7.Select "Reset" and press the controller.
8.Select "Yes" and press the controller.
9.Start to drive.
The tires are shown in gray and "Resetting
TPM..." is displayed.
After a few minutes of driving, the set tire infla-
tion pressures in the tires are applied as the set
values to be monitored. Resetting finishes dur-
ing driving. The tires are shown in green on the
Control Display.
If a flat tire is detected during resetting
and applying the tire inflation pressures,
all tires are shown in yellow on the Control Dis-
play. The message "Tire low!" is displayed.<
Message with low tire inflation
pressure
The warning lamp lights up yellow. A
message appears on the Control Dis-
play. In addition, an acoustic signal
sounds. There is a flat tire or extensive inflation
pressure loss.
1.Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.2.Check whether your vehicle is equipped
with standard tires or run-flat tires.
You will recognize run-flat tires by a
circular symbol containing the letters
RSC on the side of the tire, refer to
page227.<
Standard tires
1.If all four wheels are shown in yellow, iden-
tify the damaged tire on the vehicle.
2.Replace the damaged wheel or wheels,
refer to Changing wheels on page242.
In contrast to a compact wheel, a spare wheel is
equipped with the necessary TPM electronics
and also monitored after mounting and after
resetting the system.
Have the tire replaced by a BMW center or a
workshop informed on handling TPM which
works according to BMW repair procedures
with correspondingly trained personnel.
Run-flat tires*
1.Cautiously reduce speed to below 50 mph/
80 km/h. Avoid severe braking and steering
maneuvers and do not exceed a speed of
50 mph/80 km/h.
If the vehicle is not equipped with run-
flat tires, refer to page227, do not
continue driving. Continuing to drive with a
flat tire could cause severe accidents.<
2.In the event of complete tire pressure loss,
0 psi/0 kPa, you can estimate the possible
distance for continued driving on the basis
of the following guide values:
>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 or more persons, cargo bay full:
approx. 30 miles/50 km

Technology for comfort, convenience and safety
100 In critical situations, the system can make tar-
geted corrections to the steering angle pro-
vided by the driver and thus stabilize the vehicle
before the driver intervenes. This stabilizing
intervention is simultaneously deactivated
when DSC is switched off, refer to page92.
Malfunction
The warning lamp lights up yellow and
a message is shown on the Control
Display. The active steering is no
longer operational. At low speeds, greater
steering wheel movements are required,
whereas at higher speeds, the vehicle reacts
more sensitively to steering wheel movements.
The stability-promoting intervention can also
be deactivated. Proceed cautiously and drive
defensively. Have the system checked.
Brake force display
On the left: normal braking.
On the right: heavy braking.
Airbags
The following airbags are located under the
marked covers:
1Front airbags
2Head airbags
3Side airbags in front and rear
Protective action
To ensure that the safety systems con-
tinue to provide optimized protection,
please observe the adjustment instructions on
page45.<
The front airbags help protect the driver and
front passenger by responding to frontal
impacts in which safety belts alone cannot pro-
vide adequate restraint. When needed, the
head and side airbags help provide protection in the event of side impact. The relevant side air-
bag supports the side upper body area. The
head air bag supports the head.
The airbags are deliberately not triggered in
every impact situation, e. g. less severe acci-
dents or rear-end collisions.
Do not apply adhesive materials to the
cover panels of the airbags, cover them or
modify them in any other way. Do not attempt to
remove the airbag restraint system from the
vehicle. Do not modify or tamper with either the
wiring or the individual components in the air-
bag system. This category includes the uphol-
stery in the center of the steering wheel, on the
instrument panel, the doors and the roof pillars
along with the sides of the headliner. Do not
attempt to remove or dismantle the steering

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wheel. Do not touch the individual components
immediately after the system has been trig-
gered, because there is a danger of burns.
In the event of malfunctions, deactivation, or
triggering of the airbag restraint system, have
the testing, repair, removal, and disposal of air-
bag generators executed only by a BMW center
or a workshop that works according to BMW
repair procedures with correspondingly trained
personnel and has the required explosives
licenses. Otherwise unprofessional attempts to
service the system could lead to failure in an
emergency or undesired airbag triggering,
either of which could result in personal injury.<
Warnings and information on the airbags is also
provided on the sun visors.
Automatic deactivation of front
passenger airbags
The occupation of the seat is detected by eval-
uating the impression on the occupied seat sur-
face of the front passenger seat. The front and
side airbags on the front passenger side are
activated or deactivated accordingly by the sys-
tem.
The current status of the front passenger
airbag, i.e. deactivated or activated, is
indicated by the indicator lamp over the interior
rearview mirror, refer to Operating state of front
passenger airbags in the following.<
Before transporting a child on the front
passenger seat, observe the safety infor-
mation and handling instructions under Trans-
porting children safely refer to page56.
The front and side airbags on the front passen-
ger side can be deactivated for teenagers and
adults in certain sitting positions; then the indi-
cator lamp for the front passenger airbags lights
up. In these cases, change the sitting position
so that the front passenger airbags are acti-
vated and the indicator lamp goes out. If the
desired status cannot be produced by changing
the sitting position, transport the correspond-
ing person on the rear seat. Do not fit seat cov-
ers, seat cushion padding, ball mats or other
items onto the front passenger seat unless they
are specifically recommended by BMW. Do not
lay objects under the seat which could press against the seat from below. Otherwise a cor-
rect evaluation of the occupied seat surface
cannot be ensured.<
Operating state of front passenger
airbags
Depending on the vehicle's equipment, the
arrangement of the switches and indicator
lamps may differ somewhat.
The indicator lamp for the front passenger air-
bags indicates the operating status of the front
and side airbags on the front passenger side
depending on the seat occupation. The indica-
tor lamp shows whether the front passenger
airbags are activated or deactivated.
>The indicator lamp lights up when a child in
a child restraint system intended for the
purpose is properly detected on the seat.
The front and side airbags on the front pas-
senger side are not activated.
Most child's seats are detected by the
system. Especially the child's seats
required by the NHTSA at the time the vehicle is
manufactured. After installing a child's seat,
make sure that the indicator lamp for the front
passenger airbags lights up. This indicates that
the child's seat has been detected and the front
passenger airbags are not activated.<
>The indicator lamp does not light up when,
for example, a correctly seated person of
sufficient height is detected on the seat.
The front and side airbags on the front pas-
senger side are activated.
>The indicator lamp does not light up when
the seat is empty.
However, the front and side airbags on the
front passenger side are not activated.

Technology for comfort, convenience and safety
102
Operational readiness of airbag system
From radio readiness, refer to page61, the
warning lamp lights up briefly, indicating the
operational readiness of the entire airbag sys-
tem and the safety belt tensioners.
Airbag system malfunction
>Warning lamp does not light up from radio
readiness.
>Warning lamp lights up continuously.
Have the airbag system checked immedi-
ately in case of a malfunction, otherwise
there is a danger that the airbag system may not
respond in the expected manner in an accident
despite an impact of corresponding intensity.<
Head-Up Display*
The concept
With the Head-Up Display important informa-
tion is projected into the driver's field of view,
e.g. navigation instructions. This enables you to
take in this information without looking away
from the road.
Switching on/off
Press the button.
1Navigation instructions
2Display
>Cruise control
>Active cruise control
>Leaving lane warning
3Speed
Selecting displays
iDrive, for operating principle refer to page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.

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4.Select "Display settings" and press the
controller.
5.Change to upper field if necessary. Turn the
controller until "Head-Up Display" is
selected and press the controller.
6.Change into the second field from the top.
Turn the controller until "Head-Up Display"
is selected and press the controller.
7.Select desired information of Head-Up Dis-
play.
8.Press the controller.
The information appears in the Head-
Up Display.
The settings are stored for the remote control
currently in use.
Setting brightness
The brightness of the display is automatically
adapted to the ambient lighting conditions.
However, you can change the basic setting.
With the low beams switched on, the brightness
can also be adjusted with the knurled wheel of
the instrument lighting.
iDrive, for operating principle refer to page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.
4.Select "Display settings" and press the
controller.
5.Change to upper field if necessary. Turn the
controller until "Head-Up Display" is
selected and press the controller.6.Change into the second field from the top.
Turn the controller until "Brightness" is
selected and press the controller.
7.Turn the controller until the desired setting
is selected.
The setting is stored for the remote control cur-
rently in use.
Notes
The visibility of the displays in the Head-Up Dis-
play is influenced by:
>Sunglasses with certain polarization filters
>Certain seating positions
>Objects on the cover of the Head-Up Dis-
play
>Wet road surface and unfavorable lighting
conditions
If the image is distorted, please have the basic
setting checked at a BMW center.
Special windshield
The windshield is part of the system. The shape
of the windshield complies with the require-
ments of the Head-Up Display to enable a pre-
cise display. A film in the windshield prevents
the double images from being displayed.
Windshield replacement should be carried out
by a BMW center or a workshop that works
according to BMW repair procedures with cor-
respondingly trained personnel.
Care instructions
You can find everything you need to know on
this topic by consulting the separate Caring for
your vehicle brochure.

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>in dense fog, heavy rain or snowfall
>when displaying very hot objects such as
transformers, car exhausts etc.
>when the image briefly freezes during nor-
mal system adjustment.
BMW Night Vision's potential benefits
can be limited by the driving style of the
driver, the size and relative temperature of the
detected objects, dirt or contamination on the
camera lens, adverse weather like snow, rain or
fog, and other factors not mentioned here. It will
always be the driver's responsibility to drive at a
speed and in a manner that recognizes potential
hazards and adjust accordingly.
BMW Night Vision is not a substitute or replace-
ment for the driver's responsibility to adapt to
visibility and traffic conditions. The forward view
illuminated by the headlamps must always be
the basis for making safe driving decisions, oth-
erwise a safety risk will result.<
Activating BMW Night Vision
1.Turn the light switch to position2 or3, refer
to page108.
2.With low beams switched on:
>Press the button. Depending on the
vehicle's equipment, the location of the
button may differ somewhat.
>Press one of the programmable buttons
on the steering wheel, refer to page54.
The image will be displayed on the Control Dis-
play after a few seconds. Depending on the last
mode selected, either the normal or full screen
image will be displayed.Due to the system's need to adjust periodically,
a still image is displayed at certain intervals for
fractions of a second. This is normal and not an
indication of a problem.
To prevent driving without headlamps, at a
speed of more than approx. 3 mph/5 km/h and
when dark, the thermal image on the Control
Display is only shown when the low beams are
on.
Deactivating BMW Night Vision
>Press the button.
>Press the button on the steering wheel.
>Press the button.
>Via iDrive, refer to Selecting settings.
Selecting settings
For iDrive details, refer to page16.
1.Activate BMW Night Vision.
2.Press the controller to display the menu
items.

Technology for comfort, convenience and safety
106 3.Select the menu item and press the control-
ler:
>"Night Vision off":
Deactivate BMW Night Vision.
>"Zoom":
At higher speeds, the image is zoomed
in.
>"Curve mode":
Depending on the steering angle and
other parameters, the image sections
follows the course of the road to some
degree.
>"Full screen":
The image is shown on the entire Con-
trol Display.
>"Contrast":
The contrast of the screen can be
adjusted.
>"Brightness":
The brightness of the screen can be
adjusted.
"Curve mode" can only be activated with
the "Zoom" function switched on. With
"Full screen" activated, "Curve mode" and
"Zoom" cannot be selected.<
The settings are stored for the remote control
currently in use.
To exit the menu:
The image will automatically disappear after
approx. 5 seconds.
Cleaning camera
The function of the camera may be affected by
heavy rain and fog, dirt, snow or ice on the lens.
When this occurs, the displayed image on the
Control Display may become gray.To minimize icing, the camera lens is automati-
cally heated. However, it may be necessary to
clean the camera lens manually under severe
weather conditions. When doing so, cautiously
remove any debris, ice or snow. To avoid dam-
age to the lens, do not use sharp or abrasive
instruments to clean ice, snow, or dirt off the
lens.
When the windshield is cleaned with the head-
lamps on, the camera lens area is automatically
sprayed as well. Refer to page68.
Leaving lane warning*
The concept
This system warns you from a speed of approx.
40 mph/70 km/h when the vehicle is leaving the
lane you are currently in on roads with lane limit
lines. You feel this due to a slight vibration of the
steering wheel.
The system does not warn you if you signal
before leaving the lane.
It is best to use the system on well-developed
roads and freeways.
Switching on/off
Press the button on the steering wheel.
>The two lines1 indicate that the system is
activated.
>The two arrows2 mean that the system has
detected one or two lane limit lines from a
speed of approx. 40 mph/70 km/h and
warns accordingly.

Lamps
108
Lamps
Parking lamps/low beams
0Lights off and daytime running lamps*
1Parking lamps and daytime running lamps*
2Low beams and welcome lamps
3Automatic headlamp control
*, daytime run-
ning lamps
*, welcome lamps, Adaptive
Head Light
* and high-beam assistant*
If you open the driver's door with the ignition
switched off, the exterior lighting is automati-
cally switched off when the light switch is in
position0, 2 or 3.
Parking lamps
In switch position1, the front, rear and side
vehicle lighting is switched on. You can use the
parking lamps for parking.
The parking lamps drain the battery. Do
not leave them switched on for long peri-
ods of time, otherwise it may no longer be pos-
sible to start the engine. It is preferable to
switch on the roadside parking lamps on one
side, refer to page110.<
Low beams
The low beams light up when the light switch is
in position 2 and the ignition is on.
Automatic headlamp control*
In switch position3, the system activates the
low beams and switches them on or off in
response to changes in ambient light condi-
tions, for instance, in a tunnel, at dawn and dusk
and in case of precipitation. Adaptive Head
Light
* is active. The LED next to the symbol
lights up when the low beams are on. You can
activate the daytime running lamps, refer to
page109. In the situations named above, the
system then automatically switches over to the
low beams.
A blue sky with the sun low on the horizon can
cause the lights to be switched on.
The low beams remain switched on inde-
pendent of the ambient lighting condi-
tions when you switch on the fog lamps
*.<
The automatic headlamp control cannot
serve as a substitute for your personal
judgment in determining when the lamps
should be switched on in response to ambient
lighting conditions. For example, the sensors
cannot detect fog of hazy weather. To avoid
safety risks, you should always switch on the
low beams manually under these conditions.<
Welcome lamps
If you leave the light switch in position2 or 3
when parking the vehicle, then when you unlock
the vehicle, the parking lamps and interior light-
ing remain illuminated for a brief time.
Activating/deactivating welcome
lamps
iDrive, for operating principle refer to page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.
4.Select "Vehicle / Tires" and press the con-
troller.

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5.Change to upper field if necessary. Turn the
controller until "Lighting" is selected and
press the controller.
6.Select "Welcome light" and press the con-
troller.
The welcome lamps are switched on.
The setting is stored for the remote control cur-
rently in use.
Pathway lighting
When you activate the headlamp flasher after
parking the vehicle and switching off the lamps,
the low beams will come on for a brief period.
You can set the duration or deactivate the func-
tion via iDrive.
iDrive, for operating principle refer to page16.
1.Open the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.
4.Select "Vehicle / Tires" and press the con-
troller.
5.Change to upper field if necessary. Turn the
controller until "Lighting" is selected and
press the controller.6.Select "Pathway lighting" and press the
controller.
7.Turn the controller to select the desired
duration.
8.Press the controller to apply the setting.
The setting is stored for the remote control cur-
rently in use.
Daytime running lamps*
The daytime running lamps light up in
position0, 1 and 3. If the light switch remains in
position1, the parking lamps light up after the
ignition is switched off.
Activating/deactivating daytime
running lamps*
iDrive, for operating principle refer to page16.
1.Open the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.
4.Select "Vehicle / Tires" and press the con-
troller.
5.Change to upper field if necessary. Turn the
controller until "Lighting" is selected and
press the controller.
6.Select "Daytime running lamps" and press
the controller.
The daytime running lamps are
switched on.
The setting is stored for the remote control cur-
rently in use.