2008 BMW 335XI SEDAN brake light

Technology for driving comfort and safety
88 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.HDC is automatically deactivated in the follow-
ing situations:
>At speeds above approx. 40 mph or
60 km/h
>After switching off the ignition.
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

Driving tips
121Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
Drive defensively
Avoid unnecessary acceleration and braking
maneuvers. To do so, keep an adequate dis-
tance to the forward vehicle. A defensive and
smooth driving style keeps fuel consumption
down.
Avoid high engine speeds
Only use first gear when setting off. In second
and higher gears, accelerate without hesitation
or pauses. When accelerating, shift up before
reaching high engine speeds.
When you reach the desired speed, shift into
the highest applicable gear and drive with the
engine speed as low as possible and at a con-
stant speed.
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
Coasting
When approaching a red light, take your foot off
the accelerator and coast to a stop in the high-
est applicable gear.
O n a d o w n h il l s lo p e , t a k e y o u r f o o t o f f t h e a c c el -
erator and coast in a suitable gear.
The fuel supply is interrupted when coasting.
Switch off the engine during lengthy
stops
Switch off the engine when stopping for lengthy
periods, e.g. at traffic lights, railroad crossings
or in traffic congestions. You achieve fuel sav-
ings even if standing time is as short as approx.
4 seconds.
Switch off functions you do not need at
the moment
Functions such as the air conditioner and the
seat or rear window heating draw large amounts
of power and consume additional fuel. Espe-
cially in city traffic and in stop and go driving
they have a considerable impact. Therefore,
switch these functions off when they are not
really needed.
Have the vehicle serviced
Have the vehicle serviced regularly to achieve
good economy and a long vehicle life. BMW
recommends having the vehicle serviced at a
BMW center. Also note the BMW service sys-
tem, refer to page226.
General driving notes
Close the luggage compartment lid/
tailgate
Operate the vehicle only when the lug-
gage compartment lid/tailgate and rear
window are closed. Otherwise, exhaust fumes
could enter the interior of the vehicle.<
If the vehicle must be driven with the luggage
compartment lid/tailgate open:
1.Close all windows and the glass roof.
2.Greatly increase the air volume of the auto-
matic climate control system, refer to
page102.
Hot exhaust system
In all vehicles, extremely high tempera-
tures are generated in the exhaust sys-
tem. Do not remove the heat shields installed
adjacent to various sections of the exhaust sys-
tem, and never apply undercoating to them.
When driving, standing at idle and while park-
ing, take care to avoid possible contact
between the hot exhaust system and any highly
flammable materials such as hay, leaves, grass,
etc. Such contact could lead to a fire, with the
risk of serious personal injuries and property
damage. Do not touch hot exhaust tail pipes.
Otherwise there is a risk of burns.<
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a wedge
of water can form between tires and road sur-
face. This situation, known as hydroplaning,
means that the tire can completely lose contact
with the road surface, so that neither the car can
be steered nor the brake be properly applied.<

Things to remember when driving
122 The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page218.
Driving through water
Drive through water on the road only if it is
not deeper than 1 ft/30 cm, and then only
at walking speed at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Use the parking brake on inclines
On inclines, do not hold the vehicle for a
lengthy period using the clutch; use the
parking brake instead. Otherwise greater clutch
wear will result.<
For more information about the drive-off assis-
tant, refer to page88.
Braking safely
Your BMW is equipped with ABS as a standard
feature. Applying the brakes fully is the most
effective way of braking in situations in which
this is necessary. Since the vehicle maintains
steering responsiveness, you can still avoid
possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor traffic conditions to
ensure that this maneuver does not endanger
other road users. The heat generated in this
process helps dry the pads and rotors to ensure
that full braking efficiency will then be available
when you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even
light but consistent brake pressure can lead to high temperatures, brake wear and possibly
even brake failure.<
You can increase the engine's braking effect by
shifting down, all the way to first gear if neces-
sary. This strategy helps you avoid placing
excessive loads on the brake system. Down-
shifting in manual mode of the automatic trans-
mission, refer to page59.
Never drive with the clutch held down,
with the transmission in idle or with the
engine switched off; otherwise, engine braking
action will not be present or there will be no
power assistance to the brakes or steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
pedals, otherwise pedal function could be
impaired.<
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on
rotors, while contaminants accumulate on the
brake pads. This occurs because the minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail to
cure.
When the vehicle is parked
Condensation forms while the automatic cli-
mate control is in operation, and then exits
under the vehicle. Traces of condensed water
under the vehicle are therefore normal.
Before driving into a car wash
For general information about taking care of
your BMW, refer to the Caring for your vehicle
brochure.

Everything from A - Z
252
Everything from A - Z
Index
"..." Identifies Control Display
texts used to select
individual functions and
refers you to the page where
these texts can be found.
A
ABS Antilock Brake
System86
ACC, refer to Active cruise
control64
Accident, refer to Sending an
Emergency Request235
Activated-charcoal filter for
automatic climate
control104
"Activation time"104
Active cruise control64
– indicator lamps67
– malfunction68
– selecting distance66
– sensor68
Active steering93
– warning lamp93
Adaptive Head Light98
"Add digits" for mobile
phone190
Additives
– coolant224
"Address book" in
navigation138
Address for navigation
– deleting140
– entering130,138
– selecting139
– storing138
– storing current position139
"Add to destination
list"133,135
Adjusting temperature inside
the car, refer to Automatic
climate control101Adjusting the thigh support44
Adjusting the tone during
audio operation, refer to
Tone control157
Airbags94
– indicator/warning lamp95
– sitting safely43
Air conditioning mode
– automatic climate
control101
– ventilation103
Air distribution
– automatic102
– individual101
Air flow rate102
Airing, refer to Ventilation103
Air pressure, refer to Tire
inflation pressure208
Air recirculation, refer to
Recirculated-air mode102
"Air recirculation on / off"51
Air supply
– automatic climate
control101
– ventilation103
Air vents100
AKI, refer to Fuel
specifications207
Alarm system35
– avoiding unintentional
alarms36
– interior motion sensor36
– switching off an alarm36
– tilt alarm sensor36
"All channels" for satellite
radio167
All-season tires, refer to
Winter tires220
"All stations", displaying with
the radio160
All-wheel drive, refer to
xDrive87
"AM", waveband156,160Ambient air, refer to
Recirculated-air mode102
Antenna for mobile phone182
Antifreeze
– coolant224
– washer fluid62
Anti-theft alarm system, refer
to Alarm system35
Anti-theft system29
Approved axle loads, refer to
Weights245
Approved gross vehicle
weight, refer to Weights245
Armrest, refer to Center
armrest110
Arrival time, refer to
Computer73
Arrival time, refer to Starting
destination guidance143
Arrow display for
navigation144
"Arrow display" in
navigation144
Ashtray
– front111
– rear112
Assistance systems, refer to
Driving stability control
systems86
Assistance window20
– refer to iDrive20
AUC Automatic recirculated-
air control102
"Audio"159,163
Audio156
– controls156
– switching on/off156
– tone control157
– volume157
"Audio", refer to Tone
control157
Audio device, external110

Everything from A - Z
256 Dashboard lighting, refer to
Instrument lighting99
Data, technical242
– dimensions243
– engine242
– weights245
"Date"81
Date
– setting80
– setting format81
"Date format"81
"Daytime running lamps"97
Daytime running lamps97
DBC Dynamic Brake
Control86
"Deactivated"48
Deactivating front passenger
airbags94
Deadlocking, refer to
Locking30
Decommissioning the vehicle,
refer to Caring for your
vehicle brochure
Defect
– door lock31
– fuel filler door206
– glass roof40
– panorama glass roof42
"Delete address book" in
navigation140
"Delete all numbers" on the
mobile phone191
"Delete data" in
navigation140
"Delete" for mobile
phone191
Destination address
– deleting140
– entering130,134Destination for navigation
– destination list137
– entry130
– home address140
– manual entry130,134
– selecting from address
book139
– selecting using
information136
– selecting via language134
– selecting via map135
– storing138
Destination guidance143
– canceling voice
instructions51
– changing specified
route141
– displaying route144
– distance and arrival143
– starting143
– terminating/continuing143
– voice instructions146
– volume of voice
instructions147
Destination list for navigation
system137
Destinations recently driven
to137
"Details" for audio mode177
"Dial" for mobile phone189
"Dial number"189
Digital clock71
Digital compass108
Digital radio, refer to High
Definition Radio163
Dimensions243
Directional indicators, refer to
Turn signals60
Direction instructions, refer to
Voice instructions146
Directory for navigation, refer
to Address book138
Displacement, refer to Engine
data242
Display, refer to iDrive
controls16
Display lighting, refer to
Instrument lighting99
"Display off"21Displays
– on the Control Display16
Displays, refer to Instrument
cluster12
Displays and controls10
Disposal
– coolant224
– remote control battery38
– vehicle battery234
Distance control, refer to
Active cruise control64
Distance remaining to service,
refer to Service
requirements76
"Distance to dest."74
Distance warning, refer to
PDC Park Distance
Control85
Door key, refer to Remote
control with integrated
key28
Door lock31
"Door locks"30,31,32,77
Doors, emergency
operation31
DOT Quality Grades217
Draft-free ventilation103
Drinks holders, refer to Cup
holders111
Drive-off assistance, refer to
Dynamic Stability Control
DSC86
Drive-off assistant88
Driving around a traffic
congestion150
Driving lamps, refer to Parking
lamps/low beams96
Driving notes120
Driving off on hills, refer to
Drive-off assistant88
Driving route, refer to
Displaying route144
Driving stability control
systems86
Driving through water122
Driving tips, refer to Driving
notes120
Dry air, refer to Cooling
function103

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

Reference 259
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Head restraints45
– front, removing46
– rear, removing46
– sitting safely43
Heated
– mirrors49
– rear window103
– seats47
Heating
– mirrors49
– rear window103
– residual heat103
– seats47
Heating and ventilation, refer
to Climate100
Heating while at a standstill,
refer to Using residual
heat103
Heavy loads, refer to Stowing
cargo123
Height, refer to
Dimensions243
Height adjustment
– seats44
– steering wheel50
High beams98
– headlamp flasher98
– indicator lamp13
– replacing bulbs229
High Definition Radio163
High water, refer to Driving
through water122
Highways, refer to Route
criteria141
Hill Descent Control HDC87
Hills122
Holders for cups111
Home address140
"Home address" in
navigation141
Homepage BMW4
Hood221
Hooks for shopping
bags115,116
Horn10,11
Hotel function, refer to
Locking or unlocking
separately34
Hot exhaust system121"Hour memo"80
"House number" in
destination entry133
Hydraulic brake assist, refer to
Dynamic Brake Control
DBC86
Hydroplaning121
I
IBOC, refer to High Definition
Radio163
Ice warning, refer to Outside
temperature
warning71
ID3 tag, refer to Information
about the track171
Identification marks
– Run-Flat Tires219
– tire coding217
iDrive16
– adjusting brightness84
– assistance window20
– automatic climate
control101
– changing language84
– changing units of measure
and display format76
– confirming selection or
entry19
– controls16
– displays, menus17
– menu guidance17
– operating principle16
– overview16
– selecting a menu item19
– setting the date and time79
– start menu17
– status information20
– switching menu pages19
– symbols18
iDrive operating principle16
Ignition56
– switched off56
– switched on56
Ignition key, refer to Remote
control with integrated
key28Ignition key position 1, refer to
Radio readiness56
Ignition key position 2, refer to
Ignition on56
Ignition lock56
i menu18
Imprint2
Indicator and warning
lamps13
– Tire Pressure Monitor
TPM92
Individual air distribution101
Individually programmable
buttons on steering
wheel50
Inflation pressure, refer to Tire
inflation pressure208
Inflation pressure monitoring,
refer to Tire Pressure
Monitor TPM90
Information
– on another location136
– on country136
– on current position136
– on destination location136
Information menu, refer to
i menu18
"Information on
destination"138
"Info sources"77
Initializing
– active steering93
– after power failure234
– compass, refer to
Calibrating108
– Flat Tire Monitor FTM89
– glass roof40
– panorama glass roof42
"Input map"135
Installation location
– CD changer173
– navigation DVD drive128
– telephone110
Instructions for navigation
system, refer to Voice
instructions146
Instrument cluster12
Instrument lighting99