four wheel drive BMW M3 2010 Owners Manual

Reference
At a glance
Controls
Driving tips
Mobility
71
>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 brak-
ing 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.
Hill Descent Control HDC*
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 then moves slightly faster than double walking
speed without the driver needing to intervene.
HDC can be activated as long as you are driving
under approx. 20 mph or 35 km/h. When driving
downhill at a speed of under approx. 20 mph or
35 km/h, the vehicle's speed is automatically
reduced to slightly more than double walking
speed and maintained.
Increasing or decreasing speed
By accelerating or braking you can change this
speed within a range from approx. 3 to 15 mph,
approx. 5 to 25 km/h.
You can specify a target speed within the same
range using the cruise control
* lever on the
steering column.
1To increase speed
2To decrease speed
Activating HDC
Press the button; the LED lights up.
When the vehicle is being braked automatically,
the LED flashes.
Deactivating HDC
Press the button again; the LED goes out.

Technology for driving comfort and safety
72 HDC is automatically deactivated at speeds
greater than approx. 35 mph/60 km/h.
Using HDC
In cars with manual transmission:
Use HDC in lower gears and in reverse gear.
With automatic transmission:
You can use HDC in any drive position.
Displays in the instrument cluster*
1Display for target speed
2HDC display
Malfunction
The HDC display disappears during HDC oper-
ation, or does not appear:
HDC is temporarily unavailable due to exces-
sive brake temperature, or DSC has failed.
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. Otherwise, the drive-off
assistant will no longer hold the car in place
after approx. 2 seconds and the car will start to
roll backwards.<
Flat Tire Monitor FTM*
The concept
The Flat Tire Monitor detects pressure loss in a
tire by comparing the rotating speeds of the
individual tires while moving.
In the event of pressure loss, the rolling circum-
ference changes and, thus, the rotating speed
of the affected wheel. This change is detected
and is reported as a flat tire.
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be initialized for the cor-
rect tire inflation pressure.
The system must be reinitialized each
time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed.<
System limitations
The Flat Tire Monitor is unable to warn
the driver of sudden, severe tire damage
caused by external factors, nor can it identify
the gradual loss of pressure that will inevitably
occur in all four tires over a lengthy period of
time.<
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, high lateral acceleration
>Snow chains are attached
Initializing the system
The initialization is completed during driv-
ing, which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically.
Do not initialize the system while snow chains
are attached.<
For operating principle refer to page64.

Everything from A to Z
184 Engine oil
– adding139
– alternative oil types139
– BMW Maintenance
System141
– capacity178
– checking level137
– dipstick137
– intervals between changes,
refer to Service
requirements65
Engine output, refer to Engine
data174
Engine speed, refer to Engine
data174
Engine starting, refer to
Starting the engine47
Entry lamps, refer to Interior
lamps83
Environmentally friendly
driving, refer to Energy
Control62
Error messages, refer to
Check Control67
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC70
Event data recorders142
Exhaust system, refer to Hot
exhaust system107
Expanding the cargo area99
Exterior mirrors39
– adjusting39
– automatic dimming
feature40
– automatic heating40
– folding in and out39
External audio device95
Eyes
– for tow-starting and towing
away157
– for tying down loads110
F
Failure messages, refer to
Check Control67
Failure of an electrical
consumer154False alarm
– avoiding unintentional
alarm26
– switching off an alarm26
Fastening safety belts, refer to
Safety belts38
Filter
– refer to Microfilter/activated-
charcoal filter for automatic
climate control90
– refer to Microfilter for air
conditioner86
First aid pouch155
Fixture for remote control,
refer to Ignition lock46
Flash when locking/
unlocking20
Flat tire
– run-flat tires134
– Tire Pressure Monitor
TPM73
Flat Tire Monitor FTM72
– indicating a flat tire73
– indicator/warning lamp73
– initializing the system72
– snow chains72,135
– system limits72
Flat tires, refer to Tire
condition133
Fluid reservoir, refer to
Washer fluid reservoir53
Fog lamps82
– indicator lamp82,160
Folding rear seat backrest99
Folding up the floor panel101
Footbrake, refer to Braking
safely108
Footwell lamps, refer to
Interior lamps83
For your own safety5
Four-wheel drive, refer to
xDrive71
Front airbags77
FTM, refer to Flat Tire
Monitor72Fuel115
– additives116
– average consumption63
– gauge62
– high-quality brands115
– quality115
– specifications115
– tank contents, refer to
Capacities178
Fuel clock, refer to Fuel
gauge62
Fuel display, refer to Fuel
gauge62
Fuel-efficient driving, refer to
Energy Control62
Fuel filler flap114
– releasing in the event of
electrical malfunction114
Fuses154
G
Garage door opener, refer to
Integrated universal remote
control91
Gasoline
– refer to Average
consumption63
Gasoline, refer to Required
fuel115
Gasoline display, refer to Fuel
gauge62
Gear indicator, automatic
transmission with
Steptronic48
Gearshift lever
– automatic transmission with
Steptronic49
– manual transmission48
Gearshifts
– automatic transmission with
Steptronic49
– manual transmission48
General driving notes107