snow chains BMW 335I 2011 E90 Owner's Manual

Technology for driving comfort and safety
86
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 to enhance drive output if the
drive wheels experience a significant loss of
traction.
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 is regulating the drive and brak-
ing 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.
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.

Technology for driving comfort and safety
88
Flat Tire Monitor FTM*
The concept
The system does not measure the actual infla-
tion pressure in the tires.
The system detects a tire pressure loss due to
speed comparisons among the individual
wheels as you drive.
In the event of pressure loss, the rolling circum-
ference changes and, thus, the rotating speed
of the affected wheel. The system detects this
and reports it as a flat tire.
Functional requirement
The system has to have been initialized at the
correct inflation pressure; otherwise, a reliable
reporting of a flat tire is not assured.
Each time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed,
reinitialize the system.
System limitations
It is impossible to provide advance warn-
ing of sudden, severe tire damage caused
by outside influences.<
The system will not detect a natural, uniform
pressure loss in all four tires. Therefore you
should check the inflation pressure regularly.
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
>Driving with snow chains
*
Status display
The current status of the Flat Tire Monitor can
be displayed on the Control Display, e.g.
whether or not the FTM is active.
1."Vehicle Info"
2."Vehicle status"3."Flat Tire Monitor"
The status is displayed.
Initialization
In the initialization, the set inflation pressures
are adopted as reference values for the detec-
tion of a flat tire. The initialization is begun by
confirmation of the inflation pressures.
Do not initialize the system while snow chains
are attached.
1."Vehicle Info"
2."Vehicle status"
3."Reset"
4.Start the engine – do not drive away.
5.Start the initialization using "Reset".
6.Start driving.
The initialization is completed during driv-
ing, which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically.<

Wheels and tires
224
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 driving on
winter roads or at temperatures below +45 7/
+7 6. 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.
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 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
page86.<

Reference 271
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Entering special destinations
by name136
Entering the postal code for
navigation132
Entry lamps, refer to Interior
lamps101
Entry map for destination136
Environmentally friendly
driving, refer to Energy
Control72
Equalizer, tone setting151
Error messages, refer to
Check Control80
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC85
Exhaust system, refer to Hot
exhaust system123
Expanding the cargo area115
Extended connectivity of the
music player in the mobile
phone174
Exterior mirrors48
– adjusting48
– automatic dimming
feature49
– automatic heating48
– folding in and out48
External audio device111
External devices
– random sequence176
Eyes
– for tow-starting and towing
away249
– for tying down loads126
F
Failure messages, refer to
Check Control80
Failure of an electrical
consumer245
False alarm
– avoiding unintentional
alarm34
– switching off an alarm34
Fastening safety belts, refer to
Safety belts47Fastest route for
navigation140
Fast forward
– CD changer163
– CD player163
Filter
– refer to Microfilter/activated-
charcoal filter for automatic
climate control105
First aid pouch247
Fixture for remote control,
refer to Ignition lock55
Flash when locking/
unlocking28
Flat tire
– run-flat tires223
– Tire Pressure Monitor
TPM89
Flat Tire Monitor FTM88
– indicating a flat tire89
– indicator/warning lamp89
– initializing the system88
– snow chains88,224
– system limits88
Flat tires, refer to Tire
condition222
Fluid reservoir, refer to
Washer fluid reservoir62
FM, waveband153
Fog lamps100
– indicator lamp13,100
Folding rear seat backrest115
Folding up the floor panel117
Footbrake, refer to Braking
safely124
Footwell lamps, refer to
Interior lamps101
For your own safety5
Four-wheel drive, refer to
xDrive86
Free memory capacity, music
collection171
Front airbags94
FTM, refer to Flat Tire
Monitor88Fuel203
– additives204
– average consumption73
– gauge72
– high-quality brands
203
– quality203
– specifications203
– tank contents, refer to
Capacities258
Fuel clock, refer to Fuel
gauge72
Fuel consumption indicator
– average fuel
consumption73
Fuel display, refer to Fuel
gauge72
Fuel-efficient driving, refer to
Energy Control72
Fuel filler flap202
– releasing in the event of
electrical malfunction202
Fuses245
G
Garage door opener, refer to
Integrated universal remote
control107
Gasoline
– refer to Average
consumption73
Gasoline, refer to Required
fuel203
Gasoline display, refer to Fuel
gauge72
Gas station
recommendations142
Gear indicator, automatic
transmission with
Steptronic58
Gearshift lever
– automatic transmission with
Steptronic58
– manual transmission57
Gearshifts
– automatic transmission with
Steptronic58
– manual transmission57
General driving notes123