differential BMW 323I 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.

Things to remember when driving
122
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:
>Gasoline engine
4,500 rpm or 100 mph/160 km/h
>Diesel engine
3,500 rpm or 93 mph/150 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 267
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Available services199
Average fuel consumption73
– setting the units76
Average speed73
Avoid highways in
navigation140
Avoiding unintentional
alarms34
Axle loads, refer to
Weights257
B
Backrest contour, refer to
Lumbar support44
Backrests, refer to Seat
adjustment43
Backrest width adjustment44
Back seats
– refer to Rear seats45
Backup lamps
– replacing bulb242,243
Band-aids, refer to First aid
pouch247
Bar, refer to Towing
methods249
Base plate for telephone or
mobile phone
– refer to Snap-in adapter192
– refer to Snap-in adapter in
the center armrest storage
compartment111
Bass, tone setting150
Battery244
– charging244
– disposal36,244
– jump-starting247
– remote control26
– replacing244
– temporary power failure245
Battery for mobile phone192
Battery renewal
– remote control36
– remote control for vehicle36
Being towed249Belts, refer to Safety belts47
Belt tensioner, refer to Safety
belts47
Beverage holders, refer to
Cupholders112
Black ice, refer to Outside
temperature warning71
Blower, refer to Air
volume104
Bluetooth, activating/
deactivating183
BMW
– car shampoo235
BMW Advanced Diesel204
BMW Assist195
BMW Assist,
activating197,199
BMW Homepage4
BMW Maintenance
System231
BMW Search197
BMW webpage4
Bottle holders, refer to
Cupholders112
Brake Assist, refer to Dynamic
Brake Control DBC85
Brake fluid, refer to Service
requirements76
Brake Force Display93
Brake lamps
– Brake Force Display93
– replacing bulb242,243
Brake pads122
– breaking in122
Brake rotors125
– brakes122
– breaking in122
Brakes
– ABS85
– BMW Maintenance
System231
– Brake Force Display93
– breaking in122
– parking brake57
– service requirements76Brakes, refer to Braking
safely124
Brake system122
– BMW Maintenance
System231
– breaking in122
– disc brakes125
Breakdown services, refer to
Roadside Assistance246
Breaking in the clutch122
Breaking in the differential,
refer to Engine and
differential122
Break-in period122
Brightness of the Control
Display83
Bulb changing, refer to Lamps
and bulbs238
Button for starting the engine,
refer to Start/stop button55
Buttons on the steering
wheel11
C
California Proposition 65
warning6
Call
– accepting184
– ending184
– rejecting184
Calling, refer to Phone
numbers, dialing185
Calling, refer to Telephone
owner's manual
Can holders, refer to
Cupholders112
Capacities258
Capacity of the cargo area257
Car battery, refer to Vehicle
battery244
Car care, refer to Care233