2010 BMW 335I CONVERTIBLE coolant level

Controls overview
70
Coolant temperature
A warning lamp will come on if the coolant, and
therefore the engine, becomes too hot. In addi-
tion, a message will appear on the Control Dis-
play.
Check coolant level, refer to page215.
Engine oil temperature*
When the engine is at normal operating temper-
ature, the engine oil temperature is between
approx. 2107/1006 and approx. 3007/
1506.
If the engine oil temperature is too high, a mes-
sage appears on the Control Display.
Fuel gauge
Fuel tank capacity: approx. 16.1 gallons/
61 liters.
You can find information on refueling on
page198.
If the tilt of the vehicle varies for a longer period,
when you are driving in mountainous areas, for
example, the indicator may fluctuate slightly.
Reserve
Once the fuel level has fallen to the reserve
zone, a message briefly appears on the Control
Display and the cruising range for the remaining
amount of fuel is displayed on the computer.
Under a cruising range of approx. 30 miles/
50 km, the message remains in the Control Dis-
play.
Refuel as soon as possible once your
cruising range falls below 30 miles/
50 km; otherwise, engine functions are not
ensured and damage can occur.<
Computer
Displays in the instrument cluster
Calling up information
Press the button in the turn indicator lever.
The following items of information are dis-
played in the order listed:
>Cruising range
>Average speed
>Average fuel consumption
>Current fuel consumption
*
>No information
To set the corresponding units of measure,
refer to Units of measure on page72.
Cruising range
Displays the estimated cruising range available
with the remaining fuel. The range is calculated
on the basis of the way the car has been driven
over the last 18 miles/30 km and the amount of
fuel currently in the tank.

Mobility
213Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Important parts of the engine compartment
1Expansion tank for coolant, refer to
page215
2Washer fluid filler neck for headlamp clean-
ing system and window washer system,
refer to page613Jump-starting connection, refer to
page231
4Filler neck for engine oil, refer to Adding
engine oil
Engine oil
The engine oil consumption is dependent on
driving style and driving conditions.
Checking oil level
Your car is equipped with an electronic oil-level
monitor.
For a precise measurement and display of the
oil level, it is necessary that the engine be at
operating temperature, i.e. after uninterrupted
driving for at least approx. 6.5 miles/10 km. You
can have the oil level displayed while you are
driving, or while the vehicle is at a standstill on a
level surface and the engine is running.
Display in the instrument cluster
1.Push button 1 in the turn indicator lever up
or down repeatedly until the appropriate
symbol is shown in the display, accompa-
nied by the word "OIL".
2.Press button 2 in the turn indicator lever.
The oil level is checked and the reading dis-
played.

Mobility
215Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Too much oil will harm the engine.
Have the vehicle checked without
delay.<
>"Measurement inactive. Have this
checked."
Do not add engine oil. You can continue
your journey. Note the newly calculated dis-
tance remaining to the next oil service, refer
to page73. Have the system checked as
soon as possible.
Adding engine oil
Add up to 1 US quart/1 liter of engine oil only
after a corresponding message is shown on the
Control Display.
Add oil within the next 125 miles/200 km;
otherwise, the engine could be dam-
aged.<
Keep oils, greases, etc. out of the reach of
children and comply with the relevant
warnings on the containers. Otherwise, health
hazards may result.<
Oil change
Have oil changed only at your BMW center or at
a workshop that works according to BMW
repair procedures with correspondingly trained
personnel.
Oil types
Do not use oil additives as this could
result in engine damage.<
Specified engine oils
Your service center can advise you on which
engine oils have been approved by the manu-
facturer of your vehicle.The engine oil quality is critical for the life of the
engine.
Only use approved High Performance oil.
Approved oils belong to the following viscosity
classes: SAE 0W-40, SAE 0W-30, SAE 5W-40
and SAE 5W-30.
Alternative oil types
If the approved engine oils are not available, up
to 1 US quart/1 liter of another oil with the fol-
lowing specification may be used:
API SM or higher
Coolant
Do not add coolant to the cooling system
when the engine is hot. Escaping coolant
can cause burns.<
Coolant consists of half water and half additive.
Not all commercially available additives are suit-
able for your BMW. Ask your BMW center for
suitable additives.
Only use suitable additives; otherwise,
engine damage may result. Because
additives are harmful to your health, it is impor-
tant to follow the instructions on the contain-
ers.<
Comply with the appropriate environ-
mental protection regulations when dis-
posing of coolant additives.<
Checking coolant level
1.Do not open the engine hood before the
engine has cooled down.
2.Turn the cap of the expansion tank a little
counterclockwise to allow any accumulated
pressure to escape, then continue turning
to open.
3.The coolant level is correct if it is between
the maximum and minimum marks in the

Under the hood
216 filler neck, refer also to the diagram next to
the filler neck.
4.If the coolant is low, slowly add coolant up to
the specified level; do not overfill.
5.Turn the cap until there is an audible click.
6.Have the reason for the coolant loss elimi-
nated as soon as possible.

Reference 251
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Configuring settings, refer to
Personal Profile26
Confirmation signals for
locking/unlocking the
vehicle29
Congestion
– refer to Route, bypassing
sections137
Connecting vacuum cleaner,
refer to Connecting
electrical appliances109
Consumption, refer to
Average consumption71
Consumption display
– average consumption71
Contacts
– creating188
Control Center, refer to
iDrive16
Control Display, refer to
iDrive16
– adjusting brightness80
– switching on/off19
Controller, refer to iDrive16
Controls and displays10
Control unit, refer to iDrive16
Convenient loading in
Convertible28
Convenient operation
– glass roof28
– glass roof with Comfort
Access34
– retractable hardtop28
– windows28
– windows with Comfort
Access34
Convertible
– bag holder111
– Convenient loading28
– enlarging cargo area110
– folding down rear
backrest110
– retractable hardtop38
– rollover protection
system92
– securing cargo122
– stowing cargo121
Coolant215
– checking level215Coolant temperature70
Cooling, maximum99
Cooling fluid, refer to
Coolant215
Cooling system, refer to
Coolant215
Copyright2
Corner-illuminating lamps
– replacing bulbs224
Corner-illuminating lamps,
refer to Adaptive light
control94
Cornering lamps, refer to
Adaptive light control94
Correct tires210
Country codes DVD159
Courtesy lamps, refer to
Interior lamps97
Criteria for route136
Cross-hairs in navigation132
Cruise control61
– active63
– malfunction63
Cruising range70
Cupholders108
Curb weight, refer to
Weights241
Current playback
– external devices171
– of music collection166
Customer Relations193
D
Dashboard, refer to
Cockpit10
Dashboard, refer to
Instrument cluster12
Dashboard lighting, refer to
Instrument lighting96
Data, technical238
– capacities241
– dimensions239
– engine238
– weights241
Data transfer194
Date
– date format77
– setting76Daytime running lights94
– replacing bulbs224
DBC Dynamic Brake
Control82
Deactivating front passenger
airbags90
Deadlocking, refer to
Locking28
Defect
– door lock30
– fuel filler flap198
– glass roof37
Destination, entering by town/
city name127
Destination address
– entering127,133
Destination entry via BMW
Assist131
Destination for navigation
– entering by voice133
– entering via map132
– entry127
– home address130
– manual entry127
Destination guidance136
– bypassing a route
section137
– changing specified
route136
– continuing136
– starting136
– voice instructions137
– volume of voice
instructions138
Digital clock69
Digital compass105
Digital radio, refer to HD
Radio150
Dimensions239
Directional indicators, refer to
Turn signals59
Direction instructions, refer to
Voice instructions137
Directory for navigation, refer
to Address book
129
Displacement, refer to Engine
data238
Display, refer to iDrive
controls16

Everything from A - Z
252 Display lighting, refer to
Instrument lighting96
Displays
– on the Control Display16
Displays, refer to Instrument
cluster12
Displays and controls10
Disposal
– coolant215
– remote control battery35
– vehicle battery228
Distance control, refer to
Active cruise control63
Distance remaining to service,
refer to Service
requirements73
Distance warning, refer to
Park Distance Control
PDC81
Door key, refer to Remote
control with integrated
key26
Door lock29
Doors, emergency
operation30
DOT Quality Grades208
Draft-free ventilation101
Drinks holders, refer to
Cupholders108
Drive-off assistance, refer to
Dynamic Stability Control
DSC82
Drive-off assistant84
Driving lamps, refer to Parking
lamps/low beams93
Driving notes118
Driving off on hills, refer to
Drive-off assistant84
Driving stability control
systems82
Driving through water120
Driving tips, refer to Driving
notes118
Dry air, refer to Cooling
function100
DSC Dynamic Stability
Control82DTC Dynamic Traction
Control82
– indicator/warning lamp82
DVD
– country codes159
– settings160
– video playback159
DVD menu160
DVD player, refer to CD
player157
DVD video159
Dynamic Brake Control
DBC82
Dynamic destination
guidance137
Dynamic Stability Control
DSC82
– indicator/warning lamp82
Dynamic Traction Control
DTC
– indicator/warning lamp83
E
EBV Electronic brake-force
distribution82
Eject button, refer to Buttons
on the CD/DVD player146
Electrical malfunction
– door lock30
– driver's door30
– fuel filler flap198
– glass roof37
Electric seat adjustment43
Electric steering wheel lock
– with Comfort Access34
Electronic brake-force
distribution EBV82
Electronic oil level check213
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC82
Emergency actuation,
automatic transmission,
refer to Overriding selector
lever lock59
Emergency operation
– fuel filler flap, manual
release198Emergency operation, refer to
Closing manually
– glass roof37
Emergency operation, refer to
Manual operation
– door lock30
Emergency release
– trunk lid from inside31
Emergency Request230
Emergency services, refer to
Roadside Assistance230
Energy, saving
– saving fuel118
Engine
– breaking in118
– data238
– overheated, refer to Coolant
temperature70
– speed238
– starting56
– starting, Comfort Access33
– switching off56
Engine compartment213
Engine coolant, refer to
Coolant215
Engine oil
– adding215
– alternative oil types215
– BMW Maintenance
System217
– capacity241
– checking level213
– intervals between changes,
refer to Service
requirements73
Engine output, refer to Engine
data238
Engine speed, refer to Engine
data238
Engine starting, refer to
Starting the engine56
Entry lamps, refer to Interior
lamps97
Entry map for destination132
Equalizer, tone setting147
Error messages, refer to
Check Control77

Reference 257
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Oil, refer to Engine oil213
Oil consumption213
Oil level213
Old batteries, refer to
Disposal228
Onboard vehicle tool kit223
Opening and closing
– Comfort Access33
– from inside30
– from outside27
– using the door lock29
– via the remote control27
Options, selecting for
navigation136
Orientation menu, refer to
Start menu17
Outlets
– refer to Ventilation101
Output, refer to Engine
data238
Outside-air mode
– automatic climate
control100
Outside temperature
display69
– changing units of
measure72
– in computer72
Outside temperature
warning69
Overheated engine, refer to
Coolant temperature70
Overriding selector lever
lock59
Overview
– radio control146
P
Paintwork care220
Park assistant, refer to Park
Distance Control81
Park Distance Control PDC81
Parked car ventilation101
– preselecting switch-on
times102
– switching on and off
directly102Parking
– vehicle56
Parking aid, refer to Park
Distance Control PDC81
Parking brake56
– indicator lamp57
Parking lamps93
– replacing bulbs224
Parking lamps/low beams93
Passenger side mirror tilt
function50
Pathway lighting94
Personal Profile26
Phone book179
Phone numbers
– dialing180
Pinch protection system
– glass roof, electric37
– windows36
Placing a call, refer to
telephone owner's manual
Playing music165
Polish221
Pollen
– refer to Microfilter/activated-
charcoal filter for automatic
climate control101
Postal code, entering for
navigation128
Power failure228
Power windows35
Power windows, refer to
Windows35
Pressure, tires200
Pressure monitoring, tires84
– Flat Tire Monitor84
Pressure monitoring of tires,
refer to Tire Pressure
Monitor TPM86
Programmable buttons on the
steering wheel11
Protection function, refer to
Pinch protection system
– glass roof, electric37
– windows36
Providing medical assistance,
refer to First aid pouch230
Puncture
– Flat Tire Monitor84
R
Radio
– controls146
– HD Radio150
– satellite radio152
– selecting a waveband149
– storing stations149
– switching on/off146
– tone control146
– volume146
Radio position, refer to Radio
readiness55
Radio readiness55
– switched off56
– switched on55
Radio-remote key, refer to
Remote control with
integrated key26
Rain sensor60
Random sequence
– external devices171
– music collection167
Reading lamps97
Rear lamps, refer to Tail
lamps225
Rear seats
– adjusting head restraints46
– folding down backrests110
Rear turn signals
– replacing bulb225,226
Rear ventilation101
Rearview mirror, refer to
Mirrors50
Rear window defroster100
Rear window roller blind, refer
to Roller sun blinds106
Receiving level of mobile
phone, refer to Status
information19
Reception
– quality150
– radio station150
Recirculated-air mode100
Recirculation of air, refer to
Recirculated-air mode100
Reclining seat, refer to
Backrest43
Refueling198