2011 BMW 335I XDRIVE CONVERTIBLE differential

Technology for driving comfort and safety
90
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.

Things to remember when driving
126
Things to remember when driving
Break-in period
Moving parts need breaking-in time to adjust to
each other. Please follow the instructions below
in order to achieve the optimal service life and
economy of operation for your vehicle.
Engine and differential
Always obey all official speed limits.
Up to 1,200 miles/2,000 km
Drive at varying engine and road speeds, but do
not exceed an engine speed of 4,500 rpm or a
road speed of 100 mph/160 km/h.
Avoid full-throttle operation and use of the
transmission's kickdown mode.
After driving 1,200 miles/2,000 km
Engine and vehicle speeds can be gradually
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until after an initial break-in
period. Therefore, drive cautiously during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive cautiously during this break-in
period.
Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.
Following part replacement
The same break-in procedures should be
observed if any of the components mentioned
above have to be renewed in the course of the
vehicle's operating life.
Saving fuel
The fuel consumption of your vehicle depends
on several factors. You can lower fuel consump-
tion and the environmental impact by taking
certain measures, adjusting your driving style
and having the vehicle serviced regularly.
Remove any unneeded cargo
Additional weight increases fuel consumption.
Remove any mounted parts after you
have finished using them
Remove unneeded additional mirrors, the roof
rack and the rear luggage rack after use.
Mounted parts affect the vehicle's aerodynam-
ics and increase fuel consumption.
Close the windows and glass roof
An open glass roof or window causes higher air
resistance and thus increases fuel consump-
tion.
Check tire inflation pressure regularly
Check the tire inflation pressure at least twice a
month and before embarking on a long journey,
and correct it if necessary.
Low tire inflation pressure causes higher rolling
resistance and thus increases fuel consumption
and tire wear.
Set off immediately
Do not let the engine warm up while the car is
still standing, but set off immediately at moder-
ate engine speed. This is the fastest way for the
cold engine to reach its operating temperature.

Reference 259
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
AUX-IN
– port115
AUX-IN port177
Available services202
Average fuel consumption77
– setting the units80
Average speed77
Avoid highways in
navigation144
Avoiding unintentional
alarms33
Axle loads, refer to
Weights249
B
Backrest contour, refer to
Lumbar support44
Backrests, refer to Seat
adjustment43
Backrest width adjustment44
Back seats
– refer to Rear seats46
Bag holder119
Band-aids, refer to First aid
pouch239
Bar, refer to Towing
methods242
Base plate for telephone or
mobile phone
– refer to Snap-in adapter195
– refer to Snap-in adapter in
the center armrest storage
compartment115
Bass, tone setting154
Battery237
– charging237
– disposal35,237
– jump-starting239
– remote control26
– replacing237
– temporary power failure237
Battery for mobile phone195
Battery renewal
– remote control35
– remote control for vehicle35
Being towed241
Belt hand-over49
– pinch protection system50Belts, refer to Safety belts49
Belt tensioner, refer to Safety
belts49
Beverage holders, refer to
Cupholders116
Black ice, refer to Outside
temperature warning75
Blinds, refer to Roller sun
blinds114
Blower, refer to Air
volume108
Bluetooth, activating/
deactivating187
BMW
– car shampoo232
BMW Assist198
BMW Assist,
activating200,202
BMW Homepage4
BMW Maintenance
System227
BMW Search200
BMW webpage4
Bottle holders, refer to
Cupholders116
Brake Assist, refer to Dynamic
Brake Control DBC89
Brake fluid, refer to Service
requirements80
Brake Force Display97
Brake lamps
– Brake Force Display97
Brake pads126
– breaking in126
Brake rotors128
– brakes126
– breaking in126
Brakes
– ABS89
– BMW Maintenance
System227
– Brake Force Display97
– breaking in126
– parking brake57
– service requirements80
Brakes, refer to Braking
safely128Brake system126
– BMW Maintenance
System227
– breaking in126
– disc brakes128
Breakdown services, refer to
Roadside Assistance238
Breaking in the clutch126
Breaking in the differential,
refer to Engine and
differential126
Break-in period126
Brightness of the Control
Display87
Bulb changing, refer to Lamps
and bulbs233
Button for starting the engine,
refer to Start/stop button55
Buttons on the steering
wheel11
C
California Proposition 65
warning6
Call
– accepting188
– ending188
– rejecting188
Calling, refer to Phone
numbers, dialing188
Calling, refer to Telephone
owner's manual
Can holders, refer to
Cupholders116
Capacities250
Capacity of the cargo area249
Car battery, refer to Vehicle
battery237
Car care, refer to Care229