2008 BMW 335I SEDAN four wheel drive

Controls
87Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
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

Controls
89Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
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. 1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Settings" and press the controller.
4.Select "Vehicle / Tires" and press the con-
troller.
5.If necessary, move the highlight marker to
the uppermost field. Turn the controller
until "FTM" is selected and press the con-
troller.
6.Start the engine, but do not start driving.
7.Select "Reset" and press the controller.
8.Select "Yes" and press the controller.
9.Start to drive.
Initialization is completed while the car is on
the move, without any feedback.

Technology for driving comfort and safety
90
Indication of a flat tire
The warning lamps come on in yellow
and red. A message appears on the
Control Display. In addition, an
acoustic signal sounds. There is a flat
tire or substantial loss of tire pressure.
1.Cautiously reduce speed to below 50 mph
or 80 km/h. Avoid sudden braking and
steering maneuvers. Do not exceed a speed
of 50 mph or 80 km/h.
If the car is not equipped with Run-
Flat Tires, refer to page219, the stan-
dard equipment by design, do not continue
driving. Otherwise a severe accident could
result if you continue driving.<
2.At the next opportunity, check the air pres-
sure in all four tires.
If all four tires are inflated to the cor-
rect pressures, the Flat Tire Monitor
might not have been initialized. The system
must then be initialized.<
3.In the event of complete tire pressure loss,
0 psi/0 kPa, you can estimate the possible
distance for continued driving on the basis
of the following guidelines:
>With a light load:
1 to 2 persons without luggage:
approx. 155 miles/250 km
>With a medium load:
2 persons, cargo bay full, or 4 persons
without luggage:
approx. 90 miles/150 km
>With a full load or when towing a trailer:
4 or more persons, cargo bay full:
approx. 30 miles/50 km
Drive cautiously and do not exceed a
speed of 50 mph or 80 km/h, otherwise
there is a risk of an accident. In the event of
pressure loss, vehicle handling changes. This
includes reduced tracking stability in braking,
extended braking distance and altered natural
steering characteristics.
If unusual vibration or loud noises occur during
the journey, this may be an indication that the
damaged tire has finally failed. Reduce your
speed and pull over as soon as possible at a suitable location. Otherwise parts of the tire
could come loose, resulting in an accident. Do
not continue driving. Instead, contact your
BMW center.<
Malfunction
The warning lamps come on in yel-
low. A message appears on the Con-
trol Display. The Flat Tire Monitor has
a malfunction or has failed. Have the
system checked as soon as possible.
Tire Pressure Monitor TPM*
The concept
TPM checks the inflation pressures of the four
mounted tires. The system notifies you if there
is a significant loss of pressure in one or more
tires.
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be reset while all tire infla-
tion pressures are correct.
Always use wheels with TPM electronics. Oth-
erwise, the system may malfunction.
Each time a tire inflation pressure has
been corrected or a wheel or tire has been
changed, reset the system.<
System limitations
TPM cannot warn you in advance of sud-
den severe tire damage caused by out-
side influences.<
The system does not work correctly if it has not
been reset; for example, a flat tire may be indi-
cated even though the tire inflation pressures
are correct.
The system is inactive and cannot indicate a flat
tire if a wheel without TPM electronics, such as
a compact spare wheel, has been mounted, or if
TPM is temporarily malfunctioning due to other
systems or devices using the same radio fre-
quency.

Telephoning
182
Telephoning
The concept
Your BMW is equipped with a full mobile phone
preparation package. After pairing a suitable
mobile phone with the vehicle once, you can
operate the mobile phone via iDrive, the buttons
on the steering wheel or via voice commands.
Once a mobile phone has been paired with your
vehicle, it is automatically recognized as soon
as it is inside the vehicle while the engine is run-
ning or the ignition is switched on. You can
store the pairing data for up to four mobile
phones simultaneously. If several mobile
phones are detected at the same time, the
mobile phone last paired can be operated via
the vehicle.
Using the telephone inside
the vehicle
Using the snap-in adapter*
The so-called snap-in adapter, a holder for
mobile phones, allows you to charge the mobile
phone's battery and connect the mobile phone
to your vehicle's outside antenna. This ensures
better network reception and consistent repro-
duction quality. Please contact your
BMW center to find out for which mobile
phones there are snap-in adapters available.
For your safety
A car phone makes life more convenient in
many ways, and can even save lives in an emer-
gency. While you should consult your mobile
phone's separate Owner's Manual for a detailed
description of safety precautions and informa-
tion, we request that you direct your particular
attention to the following:
Only make entries when the traffic situa-
tion allows you to do so. Do not hold the
mobile phone in your hand while you are driving;
use the hands-free system instead. If you do
not observe this precaution, your being dis-tracted can endanger vehicle occupants and
other road users.<
Suitable mobile phones
Please ask your BMW center which mobile
phones with Bluetooth interface are supported
by the mobile phone preparation package and/
or which mobile phones are compatible with the
snap-in adapter. By virtue of their particular
software versions, these mobile phones sup-
port the functions described in this Owner's
Manual. Malfunctions may occur with other
mobile phones.
Care instructions
You can find what you need to know about car-
ing for your mobile phone in the separate Caring
for your vehicle brochure and in the mobile
phone Owner's Manual.
Operating options
You can operate the mobile phone* using:
>Buttons on the steering wheel, refer to
page10
>iDrive, refer to page187
>Voice commands, refer to page193
>Programmable memory keys, refer to
page21
Avoid operating a mobile phone recognized by
the vehicle via the mobile phone's keypad, oth-
erwise malfunctions may result.
Making phone calls with the
BMW Assist system*: BMW Assist
calls
You can use the BMW Assist System via the
hands-free unit for BMW Assist calls.
*

Everything from A - Z
258 Fastening safety belts, refer to
Safety belts48
Fastest route for
navigation141
Fast forward
– CD changer173
– CD player173
"Fast route" in navigation141
Filter
– refer to Microfilter/activated-
charcoal filter for automatic
climate control104
Fine wood, refer to Caring for
your vehicle brochure
First aid pouch236
Fixture for remote control,
refer to Ignition lock56
Flashlight, refer to LED hand
lamp110
Flash when locking/
unlocking31
Flat tire
– Run-Flat Tires219
– Tire Pressure Monitor
TPM90
Flat Tire Monitor FTM89
– indicating a flat tire90
– indicator/warning lamp90
– initializing the system89
– malfunction90
– snow chains89,220
– system limits89
Flat tires, refer to Tire
condition218
Floor mats, carpets, refer to
Caring for your vehicle
brochure
Fluid reservoir, refer to
Washer fluid reservoir62
"FM", waveband156,160
FM, waveband160
Fog lamps98
– indicator lamp13,98
Folding in the mirrors, before
driving into a car wash49
Folding rear seat backrest114
Folding up the floor panel116
Footbrake, refer to Braking
safely122Footwell lamps, refer to
Interior lamps99
For your own safety5
Four-wheel drive, refer to
xDrive87
Frequency, selecting
manually161
Front airbags94
FTM, refer to Flat Tire
Monitor89
Fuel207
– average consumption73
– gauge72
– high-quality brands207
– quality207
– specifications207
– tank contents, refer to
Capacities246
Fuel clock, refer to Fuel
gauge72
Fuel display, refer to Fuel
gauge72
Fuel-efficient driving, refer to
Energy Control72
Fuel filler door206
– releasing in the event of
electrical malfunction206
Fuses234
G
Garage door opener, refer to
Integrated universal remote
control106
Gasoline
– refer to Average
consumption73
Gasoline, refer to Required
fuel207
Gasoline display, refer to Fuel
gauge72
Gear indicator, automatic
transmission with
Steptronic58
Gearshift lever
– automatic transmission with
Steptronic59
– manual transmission58Gearshifts
– automatic transmission with
Steptronic59
– manual transmission58
General driving notes121
Glass roof, electric39
– closing after electrical
malfunction40
– convenient operation30,31
– initializing40
– opening, closing39
– pinch protection system40
– power failure40
– raising39
– remote control30
Glove compartment109
– LED hand lamp110
GPS navigation, refer to
Navigation system128
Grills100
Gross vehicle weight, refer to
Weights245
H
Halogen lamps
– replacing bulbs229
Handbrake, refer to Parking
brake57
Hand lamp, refer to LED hand
lamp110
Hands-free system14
Hazard warning flashers14
HDC Hill Descent Control87
"HD radio"163
HD radio, refer to High
Definition Radio163
Head airbags94
Headlamp control,
automatic96
Headlamp cover229
Headlamp flasher60
– indicator lamp11,13
Headlamps
– care, refer to Caring for your
vehicle brochure
– replacing bulbs229