differential BMW 328I 2008 Owners Manual

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.
328i, 335i: 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 experi-
ence 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 controls the drive forces and
brake forces.
If the indicator lamps are on:
DSC is deactivated.
DTC Dynamic Traction Control
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 controls the drive forces and
brake 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.
HDC Hill Descent Control*
HDC is a downhill driving assistant that controls
your speed on steep downhill gradients and
makes it even easier to control your BMW's
handling under these conditions. The vehicle

Things to remember when driving
124
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 4500 rpm or a
road speed of 100 mph/160 km/h.
Avoid full-throttle operation and use of the
transmission's kick-down 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.

Everything from A - Z
254 Brakes, refer to Braking
safely126
Brake system124
– BMW Maintenance
System229
– breaking in124
– disc brakes126
Breakdown services, refer to
Roadside Assistance236
Breaking in the clutch124
Breaking in the differential,
refer to Engine and
differential124
Break-in period124
Brightness of the Control
Display86
"Brightness" on the Control
Display86
Bulb changing, refer to Lamps
and bulbs231
Button for starting the engine,
refer to Start/stop button59
Buttons on the steering
wheel11
C
California Proposition 65
warning6
"Call"194,205
Call
– accepting192
– displaying accepted194
– ending193
– missed194
– starting193
Calling
– from phone book193
– from Top 8 list194
– redialing194
Can holders, refer to Cup
holders115
Capacities247
Capacity of the cargo bay247
Car battery, refer to Vehicle
battery235
Car care, refer to Caring for
your vehicle brochureCar-care products, refer to
Caring for your vehicle
brochure
"Car Data"76
Care, refer to Caring for your
vehicle brochure
Cargo, securing128
Cargo bay
– capacity247
– convenient access37
– folding up the floor
panel119
– lamp, refer to Interior
lamps103
– opening from inside33
– opening from outside33
Cargo loading
– securing cargo128
– stowing cargo127
– vehicle127
Caring for artificial leather,
refer to Caring for your
vehicle brochure
Caring for leather, refer to
Caring for your vehicle
brochure
Caring for plastic, refer to
Caring for your vehicle
brochure
Caring for the carpet, refer to
Caring for your vehicle
brochure
Caring for the vehicle finish,
refer to Caring for your
vehicle brochure
Car jack
– jacking points235
Car key, refer to Integrated
key/remote control28
Car phone186
– installation location, refer to
Center armrest114
– refer to Mobile phone186
– refer to separate Owner's
Manual
Car radio, refer to Radio164Car wash126
– also refer to Caring for your
vehicle brochure
– with convenient access37
Catalytic converter, refer to
Hot exhaust system125
"Categories" for satellite
radio171
CBS Condition Based
Service229
"CD"160,173
CD changer173
– compressed audio files173
– controls160
– fast forward/reverse177
– installation location177
– playing a track175
– random order176
– repeating a track176
– selecting a CD173
– selecting a track174
– switching on/off160
– tone control161
– volume161
CD player173
– compressed audio files173
– controls160
– fast forward/reverse177
– playing a track175
– random order176
– repeating a track176
– selecting a track174
– switching on/off160
– tone control161
– volume161
Center armrest114
Center brake lamp
– replacing bulb234
Center console, refer to
Around the center
console14
"Central locking"30
Central locking
– from inside32
– from outside29
Central locking system29
– convenient access36
– hotel function34