snow chains BMW 323I SEDAN 2007 E90 Owner's Manual

Technology for driving comfort and safety
88
Deactivating DSC
Press the button for at least 3 seconds; the indi-
cator lamps for DSC in the instrument cluster
light up. Dynamic Traction Control DTC and
DSC have been simultaneously deactivated.
Stabilizing and drive-output promoting actions
are no longer executed.
To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC
Press the button again; the indicator lamps in
the instrument cluster go out.
For better control
If the indicator lamp flashes:
DSC controls the drive forces and
brake forces.
If the indicator lamps are on:
DSC is deactivated.
DTC Dynamic Traction Control
DTC is a version of DSC in which the drive out-
put is optimized for particular road conditions,
e.g. unplowed snow-covered roads. The sys-
tem assures the maximal drive output, but with
reduced driving stability. It is therefore neces-
sary to drive with appropriate caution.
You may find it useful to briefly activate DTC
under the following special circumstances:
>When driving uphill on snow-covered roads,
in slush or on unplowed, snow-covered
roads
>When rocking a stuck vehicle free or start-
ing off in deep snow or on loose ground>When driving with snow chains
Activating DTC
Press the button; the indicator lamps for DTC in
the instrument cluster come on.
For better control
If the indicator lamp flashes:
DTC controls the drive forces and
brake forces.
If the indicator lamps are on:
DTC has been activated.
Deactivating DTC
Press the button again; the DTC indicator
lamps in the instrument cluster go out.
xDrive
xDrive is your BMW's four-wheel-drive system.
The combined efforts of xDrive and DSC help to
further optimize traction and driving dynamics.
The xDrive four-wheel-drive system distributes
driving power variably to the front and rear axles
depending on the driving situation and road
conditions.
Hill Descent Control
HDC is a downhill driving assistant that reduces
your speed on steep downhill gradients and
makes it even easier to control your BMW's
handling under these conditions. The vehicle
then moves slightly faster than double walking
speed without the driver needing to intervene.
HDC can be activated as long as you are driving
under approx. 20 mph or 35 km/h. When driving
downhill at a speed of under approx. 20 mph or

Technology for driving comfort and safety
90
Flat Tire Monitor FTM*
The concept
The Flat Tire Monitor monitors tire pressures
while the car is being driven. The system
reports any significant loss of pressure in one
tire in relation to another.
If a tire loses pressure, its rolling radius
changes, and this in turn alters the speed of
rotation. This change is detected and is
reported as a flat tire.
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be initialized for the cor-
rect tire inflation pressure.
The system must be reinitialized each
time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed.<
System limitations
The Flat Tire Monitor is unable to warn
the driver of sudden, severe tire damage
caused by external factors, nor can it identify
the gradual loss of pressure that will inevitably
occur in all four tires over a lengthy period of
time.<
In the following situations, the system could be
delayed or malfunction:
>System has not been initialized
>Driving on snowy or slippery road surface
>Performance-oriented style of driving: slip
in the drive wheels, high lateral acceleration
>Snow chains are attached
Initializing the system
The initialization is completed during driv-
ing, which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically.
Do not initialize the system while snow chains
are attached.<
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.If necessary, move the highlight marker to
the uppermost field. Turn the controller
until "FTM" is selected and press the con-
troller.
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.
Initialization is completed while the car is in
motion.

Mobility
213Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Recommended tire brands
Certain makes of tire are recommended by
BMW for each tire size. They are marked with a
clearly visible BMW designation on the sidewall
of the tire.
When properly used, these tires meet the high-
est standards in terms of safety and handling
characteristics.
Special characteristics of winter tires
BMW recommends winter tires for use in cold
winter driving conditions. Although all-season
M+S tires provide better winter traction than
summer tires, they generally fail to provide the
same levels of cold-weather performance as
winter tires.
Pay attention to speed
Always comply with the speed limit for the
winter tires mounted on your car; failure
to do so could result in tire damage and acci-
dents.<
If the car is capable of speeds higher than that
permitted for the winter tires, a label stating the
maximum permitted speed for the mounted
tires must be displayed in your field of view.
Specialist tire dealers and your BMW center
can supply these labels.
Storage
Always store wheels and tires in a cool, dry
place with as little exposure to light as possible.
Always protect tires against all contact with oil,
grease and fuels. Do not exceed the maximum
tire inflation pressure indicated on the sidewall
of the tire.
Snow chains*
Only certain fine-link snow chains have been
tested by BMW, classified as safe for use and
recommended. Consult your BMW center for
more information.
Snow chains must be mounted in pairs and on
the rear wheels only. Observe the manufac-
turer's instructions when mounting snow
chains. Do not exceed a speed of 30 mph or
50 km/h.
Do not initialize the Flat Tire Monitor if
snow chains are mounted, otherwise the
instrument might issue an incorrect reading.
When driving with snow chains, you may find it
helpful to activate DTC temporarily, refer to
page88.<

Everything from A - Z
252 Entering the intersection133
"Entertainment"156
Entry lamps, refer to Interior
lamps100
Environmentally friendly
driving, refer to Energy
Control73
"Equalizer", refer to Tone
control158
Equalizer, refer to Tone
control158
Error messages, refer to
Check Control82
"ESN"164
ESP Electronic Stability
Program, refer to DSC
Dynamic Stability
Control87
Event data recorders220
Exhaust system, refer to Hot
exhaust system122
Expanding the cargo bay115
Exterior mirrors50
– adjusting50
– automatic dimming
feature51
– automatic heating50
– folding in and out50
External audio
device111,173
Eyes
– for tow-starting and towing
away231
– for tying down loads125
F
Fader, tone control157
Failure messages, refer to
Check Control82
Failure of an electrical
consumer227
False alarm
– avoiding unintentional
alarm36
– switching off an alarm36
Fastening safety belts, refer to
Safety belts49Fastest route for
navigation141
Fast forward
– CD changer170
– CD player170
"Fast route" in navigation141
Filter
– refer to Microfilter/activated-
charcoal filter for automatic
climate control105
Fine wood, refer to Caring for
your vehicle brochure
First aid pouch229
Fixture for remote control,
refer to Ignition lock57
Flashlight, refer to
Rechargeable flashlight110
Flash when locking/
unlocking30
Flat
– Run-Flat Tires212
– Tire Pressure Monitor
TPM91
Flat tire
– Tire Pressure Monitor91
Flat Tire Monitor FTM90
– indicating a flat tire91
– indicator/warning lamp91
– initializing the system90
– malfunction91
– snow chains90,213
– system limits90
Flat tires, refer to Tire
condition211
Floor mats, carpets, refer to
Caring for your vehicle
brochure
Fluid reservoir, refer to
Washer fluid reservoir64
"FM", waveband156,160
FM, waveband160
Fog lamps99
– indicator lamp13,99
Folding in the mirrors, before
driving into a car wash50
Folding rear seat backrest115
Folding up the floor panel117
Footbrake, refer to Braking
safely123Footwell lamps, refer to
Interior lamps100
For your own safety5
Four-wheel drive, refer to
xDrive88
Front airbags95
FTM, refer to Flat Tire
Monitor90
Fuel201
– average consumption74
– display73
– high-quality brands201
– quality201
– specifications201
– tank contents, refer to
Capacities241
Fuel clock, refer to Fuel
gauge73
Fuel display, refer to Fuel
gauge73
Fuel-efficient driving, refer to
Energy Control73
Fuel filler door200
– releasing in the event of
electrical malfunction200
Fuses227
G
Garage door opener, refer to
Integrated universal remote
control107
Gasoline, refer to Required
fuel201
Gasoline display, refer to Fuel
gauge73
Gasoline engine, checking oil
level215
Gear indicator
– automatic transmission with
Steptronic59
Gearshift lever
– automatic transmission with
Steptronic60
– manual transmission59
Gearshifts
– automatic transmission with
Steptronic60
– manual transmission59