traction control BMW 135I 2010 E81 Owner's Manual

At a glance
15Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
1Coupe: microphone for voice activation
system
* and for telephone in hands-free
mode
*
Convertible: microphone on steering col-
umn
2SOS: initiating an Emergency Request
call
*215
3Reading lamps
*90
4Coupe: glass roof, electric
*36
5Interior lamps90
6Passenger airbag status lamp84
7Control Display16
8Dynamic Traction Control DTC76
9Hazard warning flashers
10Central locking system30
11Automatic climate control
12CD/DVD drive
*136
13Selecting AM or FM waveband14Changing the audio and entertainment
sources
15Changing
>Radio station139
>Track147
17Controller16
Can be turned, pressed, or moved in four
directions
18Buttons on the controller17
Selecting menus directly
19Programmable memory keys20
20Switching entertainment audio sources on/
off and adjusting volume136
21Ejecting a CD/DVD
*147 Air distribution to the
windshield92
Air distribution to the upper body
area92
Air distribution to the footwell92
Automatic air distribution and flow
rate92
Cooling function93
Automatic recirculated-air control
AUC and recirculated-air mode93
Maximum cooling92
ALL program93
Air volume93
Defrosting windows93
Rear window defroster93
Heated seats
*48
16Convertible: opening the convert-
ible top38
Convertible: closing the convertible
top38

Technology for driving comfort and safety
76
Driving stability control
systems
Your BMW has a number of systems that help
to maintain the vehicle's stability even in
adverse driving conditions.
Antilock Brake System ABS
ABS prevents locking of the wheels during
braking. Safe steering response is maintained
even during full braking. Active safety is thus
increased.
The ABS is operational every time you start the
engine. Braking safely, refer to page110.
Electronic brake-force distribution
EBV
The system controls the brake pressure in the
rear wheels to ensure stable braking behavior.
Dynamic Brake Control DBC
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost and thus helps to achieve the short-
est possible braking distance during full brak-
ing. This system exploits all of the benefits pro-
vided by ABS.
Do not reduce the pressure on the brake for the
duration of the full braking application.
Dynamic Stability Control DSC
DSC prevents the driving wheels from losing
traction when you pull away from rest or accel-
erate. The system also recognizes unstable
driving conditions, for example if the rear of the
car is about to swerve or if momentum is acting
at an angle past the front wheels. In these
cases, DSC helps the vehicle maintain a safe
course within physical limits by reducing engine
output and through braking actions at the indi-
vidual wheels.
The laws of physics cannot be repealed,
even with DSC. An appropriate driving
style always remains the responsibility of the
driver. Therefore, do not reduce the additional
safety margin again by taking risks, as this could
result in an accident.<
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:

Wheels and tires
194
Tire identification marks
Knowledge of the labeling on the side of the tire
makes it easier to identify and choose the right
tires.
Tire size
Speed code letter
Q = up to 100 mph or 160 km/h
T = up to 118 mph or 190 km/h
H = up to 131 mph or 210 km/h
V = up to 150 mph or 240 km/h
W = up to 167 mph or 270 km/h
Y = up to 186 mph or 300 km/h
Tire Identification Number
Tires with DOT codes meet the guidelines of
the US Department of Transportation.
DOT code:
Tire age
The manufacturing date of tires is contained in
the tire coding: DOT … 3209 means that the
tire was manufactured in week 32 of 2009.
BMW recommends that you replace all tires
after 6 years at most, even if some tires may last
for 10 years.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder and
maximum section width. For example:
Tread wear 200 Traction AA
Temperature A
DOT Quality Grades
Tread wear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to
Federal Safety Requirements in addition
to these grades.<
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. For example, a tire graded
150 would wear one and one-half (1γ) times as
well on the government course as a tire graded
100. The relative performance of tires depends
upon the actual conditions of their use, how-
ever, and may depart significantly from the
norm due to variations in driving habits, service
practices and differences in road characteris-
tics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked C
may have poor traction performance.
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning, or peak traction charac-
teristics.<
Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate e.g.
Nominal width in mm
Aspect ratio in Ξ
Radial belt construction
Rim diameter in inches
Load rating,
not on ZR tires
Speed code letter, in
front of the R on ZR tires
225/45 R1791 V
e.g.
Manufacturer's
code for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 3209

Mobility
197Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
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 winter roads
or at temperatures below +457/+76.
Although all-season M+S tires provide better
winter traction than summer tires, they gener-
ally 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
page76.<

Everything from A - Z
236 DTC Dynamic Traction
Control76
– indicator lamps76
DVD
– country codes149
– settings150
– video playback149
DVD menu150
DVD player, refer to CD
player147
DVD video149
Dynamic Brake Control
DBC76
Dynamic destination
guidance127
Dynamic Stability Control
DSC76
Dynamic Traction Control
DTC
– indicator lamps77
E
EBV Electronic brake-force
distribution76
Eject button, refer to Buttons
on the CD / DVD player136
Electrical malfunction
– door lock30
– fuel filler flap188
– glass roof37
Electronic brake-force
distribution EBV76
Electronic oil level check199
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC76
Emergency operation, refer to
Manual operation
– door lock30
– fuel filler flap188
– glass roof37
– transmission lock, automatic
transmission59
Emergency release, trunk
lid31
Emergency Request215
Emergency services, refer to
Roadside Assistance215Energy, saving
– saving fuel108
Engine
– breaking in108
– data222
– speed222
– starting56
– starting, Comfort Access33
– switching off56
Engine compartment199
Engine coolant, refer to
Coolant201
Engine oil
– adding201
– additives201
– BMW Maintenance
System203
– checking level199
– intervals between changes,
refer to Service
requirements67
– specified engine oils201
Engine output, refer to Engine
data222
Engine speed, refer to Engine
data222
Engine starting, refer to
Starting the engine56
Entry map for destination122
Equalizer, tone setting137
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC76
Event data recorders204
Exhaust system, refer to Hot
exhaust system109
Extended connectivity of the
music player in the mobile
phone159
Exterior mirrors49
– adjusting49
– automatic dimming
feature51
– automatic heating50
– folding in and out50
External devices
– random sequence161Eyes
– for tow-starting and towing
away217
– for tying down loads112
F
Failure messages, refer to
Check Control71
Failure of an electrical
consumer213
False alarm, refer to Avoiding
unintentional alarms33
Fastening safety belts, refer to
Safety belts49
Fastest route for
navigation126
Fast forward
– CD changer149
– CD player149
Filter of automatic climate
control, refer to Microfilter/
activated charcoal filter94
First aid pouch215
Fixture for remote control,
refer to Ignition lock55
Flash when locking/
unlocking28
Flat tire
– run-flat tires196
– Tire Pressure Monitor
TPM79
Flat Tire Monitor FTM77
– indicating a flat tire78
– initializing the system77
– system limits77
Flat tires, refer to Tire
condition195
FM, waveband139
Fog lamps89
– indicator lamp13,89
Footbrake, refer to Braking
safely110
Footwell lamps90
For your own safety5
Free memory capacity, music
collection157
Front airbags83
Front seat setting43

Reference 243
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Switching on
– audio136
– CD changer136
– CD player136
– radio136
Switching the cooling function
on and off93
Switch-on times of parked car
ventilation, preselecting95
Symbols4
– status information19
T
Tachometer63
Tailgate, refer to Trunk lid30
Tail lamp, refer to Tail
lamps211
– replacing bulb212
Tail lamps211
– replacing bulb212
Tank contents, refer to
Capacities226
Technical changes5
Technical data222
Telephone166
– voice commands173
Telephone, installation
location, refer to Center
armrest100
Telephone, refer to separate
Owner's Manual
TeleService180
TeleService Diagnosis182
TeleService Help182
Temperature, setting for
automatic climate control92
Temperature display
– outside temperature63
– outside temperature
warning63
– setting the units67
Tempomat, refer to Cruise
control61
Thigh support44
Third brake lamp, refer to
Center brake lamp212
Three-point safety belt49
Through-loading system102Tilt alarm sensor32
Tilt function, passenger-side
mirror50
Timer, refer to Preselecting
switch-on times95
Tire inflation pressure190
– loss78,79
Tire pressure monitoring,
refer to Flat Tire Monitor77
Tire Pressure Monitor
TPM79
– resetting the system79
– system limitations79
– warning lamp80
Tire puncture, refer to Flat Tire
Monitor78
Tire Quality Grading194
Tires
– age194
– air loss80
– breaking in108
– changing, refer to Changing
wheels212
– condition195
– damage
195
– inflation pressure190
– labels194
– minimum tread depth195
– new tires196
– pressure monitoring, refer to
Flat Tire Monitor77
– pressure monitoring, refer to
Tire Pressure Monitor
TPM79
– puncture78
– retreaded196
– run-flat tires196
– size194
– wear indicators, refer to
Minimum tread depth195
– winter tires197
TMC station, refer to Traffic
bulletins129
Tone
– control136
– middle setting138
Tools, refer to Onboard
vehicle tool kit209Top 50 of music
collection156
Torque, refer to Engine
data222
Tow bar218
Tow fitting217
Tow fittings for tow-starting
and towing away217
Towing217
– car with automatic
transmission217
– methods218
Towing and tow-starting217
Town/city, for navigation117
Tow rope218
Tow-starting217
TPM, refer to Tire Pressure
Monitor79
Track
– selecting on CD147
Traction control, refer to
Dynamic Stability Control
DSC76
Traffic bulletins
– categories131
Traffic bulletins, filtering131
Traffic bulletins for
navigation129
– during destination
guidance131
– in map view131
Traffic jam
– displaying traffic
bulletins129
Transmission
– automatic transmission with
Steptronic57
– manual transmission57
Transporting children
safely52
Transport securing devices,
refer to Securing cargo112
Travel instructions, refer to
Voice instructions127
Tread depth, refer to Minimum
tire tread195
Trip, deleting125
Trip, storing124