snow chains BMW 135I COUPE 2008 E82 Owner's Manual

Technology for driving comfort and safety
82
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.
in the same way as with a differential interlock,
even if DSC is deactivated, brake actions are
still performed on the rear axle to enhance drive
output if the drive wheels experience a signifi-
cant loss of traction.
To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC
Press the button again; the indicator lamps for
DSC in the instrument cluster go out.
For better control
If the indicator lamp flashes:
DSC is regulating the drive and braking
forces.
If the indicator lamps are on:
DSC is deactivated.
Dynamic Traction Control DTC
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 is regulating the drive and braking
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.
Drive-off assistant
The drive-off assistant enables you to drive off
smoothly on uphill gradients. It is not necessary
to use the parking brake for this.
1.Hold the car in place by depressing the
brake.
2.Release the brake and drive off without
delay.
The drive-off assistant holds the car in
place for approx. 2 seconds after the
brake is released. Drive off without delay after
releasing the brake. Otherwise, the drive-off

Controls
83Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
assistant will no longer hold the car in place
after approx. 2 seconds and the car will start to
roll backwards.<
Flat Tire Monitor FTM*
The concept
The Flat Tire Monitor detects pressure loss in a
tire by comparing the rotating speeds of the
individual tires while moving.
In the event of pressure loss, the rolling circum-
ference changes and, thus, the rotating speed
of the affected wheel. 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. 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 on
the move, without any feedback.

Wheels and tires
208
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
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 pres-
sure indicated on the sidewall of the tire.
Swapping wheels between axles
BMW advises against swapping wheels
between the front and rear axles, even if all tires
have the same size, as this could impair driving
characteristics. If the tires are of mixed sizes,
swapping wheels between the axles is not per-
missible.
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 manufacturer's instructions when
mounting snow chains. Do not exceed a speed
of 30 mph/50 km/h with chains.
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
page82.<

Reference 251
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Runflat System Component
RSC, refer to Run-Flat
Tires207
Run-Flat Tires207
– continuing driving with a
damaged tire84
– flat tire84
– new tires207
– remaining driving distance,
refer to Indication of a flat
tire84
– tire inflation pressure202
– winter tires208
Runflat Tyres, refer to Run-
Flat Tires207
S
Safety-belt height
adjustment51
Safety belts51
– damage51
– indicator lamp51
– reminder51
– sitting safely45
Safety systems
– airbags88
– Antilock Brake System
ABS81
– Dynamic Stability Control
DSC81
– rollover protection system,
convertible89
– safety belts51
Safety tires, refer to Run-Flat
Tires207
"SAT"150,160
Satellite radio160
– displaying additional
information161
– enabling160
– selecting channel161
– storing channel161
Saving fuel114
"Scan"
– sampling radio stations155
– sampling tracks on CD165Scan
– CD changer165
– CD player165
– radio155
"Scan all" for audio mode165
"Scan directory" for audio
mode165
Screen, refer to iDrive16
Screw thread for tow
fitting224
SDARS, refer to Satellite
radio160
Seat and mirror memory49
Seat belt reminder, refer to
'Fasten safety belts'
reminder51
Seats45
– heating49
– sitting safely45
Securing cargo109,110
"Select as
destination"130,195
"Select current speed"78
Selecting a country for
navigation124
Selecting an audio source150
Selecting menu items19
Selecting new scale for
navigation139
Selector lever, automatic
transmission with
Steptronic61
"Service"211
Service, refer to Roadside
Assistance222
Service car, refer to Roadside
Assistance222
Service data in remote
control214
"Service Info"72,193
Service Interval Display, refer
to Condition Based Service
CBS214
"Service Request"186,193
Service requirement display,
refer to Condition Based
Service CBS214
"Service
requirements"72,193,211Service requirements71
"Set date"75
"Set time"75
"Settings"197
Settings
– clock, 12h/24h format75
– date format76
"Settings" for unlocking29
Setting times, refer to
Preselecting switch-on
times100
Shifting gears with automatic
transmission with
Steptronic61
Shiftlock, refer to Changing
selector lever positions61
Short commands for the voice
command system235
Shortest route in navigation,
refer to Selecting route134
"Short route" in
navigation134
"Show current position"129
"Show destination
position"129
Shuffled, refer to Random
– CD changer166
– CD player166
Side airbags88
Side windows, refer to
Windows38
Signal horn, refer to Horn10
Sitting safely45
– airbags45
– safety belt45
Ski bag109
Sliding/tilt sunroof, refer to
Glass roof, electric
39
Slot for remote control58
Smokers' package, refer to
Ashtray107
Snap-in adapter, refer to
Center armrest106
Snow chains208
Socket, refer to Connecting
electrical appliances107
Socket for On-Board
Diagnosis OBD215