2012 BMW M3 CONVERTIBLE snow chains

91
Technology for driving comfort and safety
Controls
Deactivating DSC
Press the button for at le
ast 3 seconds until the
indicator lamp for DSC OFF lights up and DSC
OFF is displayed in the instrument cluster.
Dynamic Traction Cont rol DTC and DSC have
been simultaneously de activated. 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; th e indicator lamp in the
instrument cluster goes out.
For better control
If the indicator lamp flashes: the DSC
controls the driving and braking forces.
If the indicator lamp lights up: DSC and
DTC have failed.
The indicator lamp lights up and
DSC OFF is displayed in the instrument
cluster: DSC is deactivated.
Dynamic Traction Control DTC
DTC is a version of DSC in which the drive out-
put is optimized for part icular 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 lamp for DSC
OFF lights up and TRACTION is displayed in
the instrument cluster.
For better control
If the indicator lamp flashes: DTC con-
trols the driving and braking forces.
If the indicator lamp lights up: DSC and
DTC have failed.
The indicator lamp lights up and
TRACTION is displayed in the instru-
ment cluster: DTC is activated.
Deactivating DTC
Press the button again; th e indicator lamp in the
instrument cluster goes out.
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93
Technology for driving comfort and safety
Controls
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. Ot herwise, the drive-off
assistant will no longer hold the car in place
after approx. 2 seconds an d the car will start to
roll backwards. <
Flat Tire Monitor FTM
The concept
The system does not measure the actual infla-
tion pressure in the tires.
The system detects a pressure loss in a tire by
comparing the rotational speeds of the individ-
ual wheels while moving.
In the event of a pressure loss, the diameter and
therefore the rotational speed of the corre-
sponding wheel change. This is detected and
reported as a flat tire.
Functional requirement
The system must have be en initialized while the
tire inflation pressure was correct; otherwise,
reliable signaling of a flat tire is not ensured.
Each time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed,
reinitialize the system.
System limitations
Sudden serious tire damage caused by
external influences ca nnot be indicated in
advance.<
A natural, steady pressure loss in all four tires is
not detected. Therefore, check the tire 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, hi gh lateral acceleration
> Snow chains are attached
Initialization
The initialization process adopts the set infla-
tion tire pressures as reference values for the
detection of a flat tire. Initialization is started by
confirming the inflation pressures.
Do not initialize the system when driving with
snow chains.
For operating principle refer to page 82.
1. Start the engine imme diately before pulling
away, but do not drive off yet.
2. Briefly press the button 1 in the turn signal/
high beam lever up or down repeatedly until
the corresponding symbol and "RESET"
appear.
3. Press button 2 to confirm your choice of the
Flat Tire Monitor.
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196
MobilityWheels and tires
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 th an summer tires, they
generally fail to provide th e 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 agains t 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 betwee n the axles is not per-
missible.
Run-flat tires
The symbol identifying run- flat tires is a circle
with the letters RSC on the sidewall.
Run-flat tires comprise a conditionally self-sup-
porting tire and a spec ial rim. The reinforce-
ment in the sidewalls en sures that the tire can
continue to be used su bject to certain restric-
tions, even if depressurized.
For information on continuing to drive with a flat
tire, refer to In dication of a flat tire, page 94.
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 Fl at 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 DT C temporarily, refer to
page 91.<
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245
Everything from A to Z
Reference
Eyes
– for tow-starting and towing
away 217
– for tying down loads 137
F
Failure messages, refer to
Check Control 87
Failure of an electrical consumer 213
False alarm
– avoiding unintentional alarm 33
– switching off an alarm 32
Fastening safety belts, refer to
Safety belts 49
Fast forward
– CD 148
Fault messages, refer to Check Control 87
Filter
– refer to Microfilter/activated- charcoal filter for automatic
climate control 115
– refer to Microfilter for air conditioner 111
First aid pouch 215
Fixture for remote control, refer to Ignition lock 57
Flash when locking/
unlocking 27
Flat tire
– Run-flat tires 196
– Tire Pressure Monitor TPM 95
Flat Tire Monitor FTM 93
– indicating a flat tire 94
– indicator/warning lamp 94
– initialization 93
– snow chains 93,196
– system limits 93
Flat tires, refer to Tire
condition 194
Fluid reservoir, refer to Washer fluid reservoir 69
FM waveband 144 Fog lamps
107
– indicator lamp 107,220
Folding up the floor panel 125
Footwell lamps, refer to Interior lamps 107
For your own safety 5
Four-wheel drive, refer to xDrive 92
Front airbags 99
FTM, refer to Flat Tire Monitor 93
Fuel 175
– average consumption 80
– gauge 79
– high-quality brands 175
– quality 175
– specifications 175
– tank contents, refer to Capacities 239
Fuel clock, refer to Fuel gauge 79
Fuel consumption indicator
– av

erage fuel
consumption 80
Fuel display, refer to Fuel
gauge 79
Fuel filler flap 174
– releasing in the event of
electrical malfunction 174
Fuses 213
G
Garage door opener, refer to
Integrated universal remote
control 116
Gasoline
– refer to Average consumption 80
Gasoline, refer to Required
fuel 175
Gasoline display, refer to Fuel gauge 79
Gear indicator, automatic transmission with
Steptronic 60 Gear indicator, refer to
Displays in the instrument
cluster 63
Gearshift lever 62
– automatic transmission with
Steptronic 60
– manual transmission 60
Gearshifts
– automatic transmission with Steptronic 60
– manual transmission 60
General driving notes 133
Glass roof, electric 37
– closing after electrical
malfunction 37
– convenient opening and
closing 26,29
– convenient opening and closing with Comfort
Access 34
– initializing 37
– opening, closing 37
– pinch protection system 37
– power failure 37
– remote control 26
– tilting 37
Glove compartment 120
Gong
– volume 142
Grills, refer to Air vents 110
Gross vehicle weight, refer to
Weights 237H
Handbrake, refer to Parking
brake 59
Hands-free system 14,163
Hazard warning flashers 14
HDC Hill Descent Control 92
HD Radio™ reception 145
Head airbags 99
Headlamp control,
automatic 103
Headlamp flasher 67
– indicator lamp 11,14, 220
Online Edition for Part no. 01 40 2 609 312 - \251 08/11 BMW AG