engine coolant BMW 135I 2009 E81 Owner's Manual

Reference
At a glance
Controls
Driving tips
Mobility
57
Coolant temperature
A warning lamp will come on if the coolant, and
therefore the engine, becomes too hot.
Check coolant level, refer to page117.
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 warn-
ing lamp comes on in the instrument cluster.
Fuel gauge
Fuel tank capacity: approx. 14 US gallons/
53 liters.
You can find information on refueling on
page104.
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.
Fuel display 135i: in speedometer.
Reserve
Once the fuel level has fallen to the reserve
zone, the indicator lamp lights up briefly and the
cruising range for the remaining amount of fuel
is displayed. The indicator lamp stays on per-
manently when the remaining range is less than
approx. 30 miles/50 km.
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.

Reference
At a glance
Controls
Driving tips
Mobility
115
Important parts of the engine compartment
1Expansion tank for coolant, refer to
page117
2Washer fluid filler neck for headlamp clean-
ing system and window washer system,
refer to page533Jump-starting connection, refer to
page131
4Fluid filler neck for engine oil, refer to Add-
ing engine oil, page116
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.
You can have the oil level reading displayed 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.
The oil level is checked and the reading dis-
played.

Reference
At a glance
Controls
Driving tips
Mobility
117
Only use approved BMW High Performance
Synthetic Oil.
If BMW High Performance Synthetic Oil is not
available, you can add small quantities of other
synthetic oils in between oil changes. Only use
oils with the API SM specification or higher.
Your BMW center will be glad to answer
any questions regarding BMW High Per-
formance Synthetic Oil or approved synthetic
oils.<
You can also call BMW of North America at
1-800-831-1117 or visit the website
www.bmwusa.com to obtain this information.
Viscosity ratings
Viscosity is a measure of an oil's flow rating and
is categorized in SAE classes.
Selecting the appropriate SAE class depends
on the regional climatic conditions in which you
normally drive your BMW.
Approved oils belong to the 0W-40,
0W-30, 5W-40 and 5W-30 SAE
classes.<
These oils can be used for driving at all outside
temperatures.
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
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.

Everything from A to Z
152
Everything from A to Z
Index
A
ABS Antilock Brake
System64
Accessories, refer to The
individual vehicle5
Accident, reporting, refer to
Emergency Request130
Activated-charcoal filter84
Active steering70
Adaptive Head Light76
Additives
– coolant117
– engine oil116
Airbags71
– sitting safely35
– warning lamp72
Air conditioner79
Air distribution
– automatic83
– individual80
Air flow rate80,83
Airing, refer to
Ventilation81,84
Air outlets, refer to Air
vents79
Air pressure, checking, refer
to Tire inflation
pressure106
Air recirculation, refer to
Recirculated-air
mode80,83
Air vents79
AKI, refer to Fuel
specifications104
Alarm system24
– avoiding unintentional
alarms25
– interior motion sensor25
– switching off an alarm25
– tilt alarm sensor25
All-season tires, refer to
Winter tires113Ambient air, refer to
Recirculated-air
mode80,83
Antifreeze
– coolant117
– washer fluid53
Antilock Brake System
ABS64
Anti-theft alarm system, refer
to Alarm system24
Anti-theft system19
Approved axle loads, refer to
Weights149
Approved gross vehicle
weight, refer to Weights149
Armrest, refer to Center
armrest
88
Ashtray90
Assistance systems, refer to
Dynamic Stability Control
DSC65
AUC Automatic recirculated-
air control83
Automatic
– air distribution83
– air flow rate83
– cruise control54
– headlamp control74
Automatic car wash, refer to
Car wash98
Automatic car washes120
Automatic climate control79
– automatic air distribution83
Automatic curb monitor42
Automatic lamps
– refer to Welcome lamps74
Automatic recirculated-air
control AUC83Automatic transmission with
Steptronic49
– interlock50
– selector lever lock50
– shiftlock50
– towing132
– tow-starting132
AUTO program for automatic
climate control83
Average fuel consumption58
– setting the units60
Average speed58
Avoiding unintentional
alarms25
Axle loads, refer to
Weights149
B
Backrests, refer to Seats36
Backrest width adjustment37
Back seats, refer to Rear seats
– adjusting head restraints38
Backup lamp, replacing
bulb127
Bag for skis, refer to Ski
bag92
Band-aids, refer to First-aid
pouch130
Bar, refer to Tow-starting,
towing away133
Battery128
– charging128
– disposal27,128
– jump starting131
– temporary power failure128
Battery renewal
– remote control for vehicle27
Being towed132
Belts, refer to Safety belts41
Belt tensioner, refer to Safety
belts41

Everything from A to Z
154 Cleaning headlamps53
– washer fluid53
Cleaning your BMW, refer to
Care120
Clock56
– 12h/24h format60
– setting time62
Closing
– from inside22
– from outside19
Clothes hooks89
Cold start, refer to Starting the
engine48
Combination instrument, refer
to Instrument cluster12
Comfort access, refer to
Convenient access26
Comfort area, refer to Around
the center console14
Compartment for remote
control, refer to Ignition
lock47
Compass87
Computer57
Condensation, refer to When
the vehicle is parked98
Condition Based Service
CBS118
Configuring settings, refer to
Personal Profile18
Confirmation signals for
locking/unlocking the
vehicle21
Connecting vacuum cleaner,
refer to Connecting
electrical appliances90
Consumption, refer to
Average fuel
consumption58
Controls and displays10
Convenient access26
– replacing the battery27
Convenient operation
– windows20
– windows with convenient
access26
– with convenient access26
Convenient starting, refer to
Starting the engine48Convertible
– rollover protection
system72
– top30
– wind deflector33
Convertible top
– convenient opening20
Convertible top care121
Coolant117
– checking level117
– filling117
Coolant temperature57
Cooling, maximum82
Cooling fluid, refer to
Coolant117
Copyright2
Corner-illuminating lamps76
Corner-illuminating lamps,
refer to Adaptive Head
Light76
Cornering lamps, refer to
Adaptive Head Light76
Courtesy lamps77
Cruise control54
Cruising range58
Cup holders89
Curb weight, refer to
Weights149
Current fuel consumption58
D
Dashboard, refer to
Cockpit10
Dashboard lighting, refer to
Instrument lighting77
Data
– dimensions147
– sizes147
Data, technical146
– capacities150
– engine146
– weights149
Date
– setting62
– setting format60
Daytime running lamps,
switch positions75DBC Dynamic Brake
Control65
Deactivating front passenger
airbags71
Deadlocking, refer to
Locking20
Decommissioning the vehicle,
refer to Caring for your
vehicle
Defect
– door lock22
– fuel filler door104
– glass roof30
Defogging windows81,84
Defrosting the
windows81,84
Defrosting windshield, refer to
Defrosting windows81,84
Defrost position, refer to
Defrosting windows81,84
Differential, breaking in96
Digital clock56
Digital compass87
Dimensions147
Directional indicators, refer to
Turn signals51
Displacement, refer to Engine
data146
Display lighting, refer to
Instrument lighting77
Displays, refer to Instrument
cluster12
Displays and controls10
Disposal
– of coolant117
– remote control battery27
– vehicle battery128
Distance remaining to service,
refer to Service
requirements61
Distance warning, refer to
Park Distance Control
PDC64
Door key, refer to Integrated
key/remote control
18
Door lock22
Door lock, confirmation
signals21

Reference
At a glance
Controls
Driving tips
Mobility
155
Doors, emergency
operation22
DOT Quality Grades110
Draft-free ventilation81,84
Drinks holders, refer to Cup
holders89
Drive-off assistance, refer to
DSC65
Drive-off assistant66
Driving lamps, refer to Parking
lamps/low beams74
Driving notes96
Driving off on hills, refer to
Drive-off assistant66
Driving stability control
systems64
Driving through water98
Driving tips, refer to Driving
notes96
Dry air, refer to Cooling
function84
DSC Dynamic Stability
Control65
DTC Dynamic Traction
Control65
– indicator lamps65
Dynamic Brake Control
DBC65
Dynamic Stability Control
DSC65
Dynamic Traction Control
DTC
– indicator lamps66
E
EBV Electronic brake-force
distribution65
Electrical malfunction
– door lock22
– fuel filler door104
– glass roof30
Electronic brake-force
distribution EBV65
Electronic oil level check115
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC65Emergency operation, refer to
Manual operation
– door lock22
– fuel filler door104
– glass roof30
– transmission lock, automatic
transmission51
Emergency release, luggage
compartment lid24
Emergency Request130
Emergency services, refer to
Roadside Assistance130
Energy, saving
– saving fuel96
Engine
– breaking in96
– data146
– speed146
– starting48
– starting, convenient
access26
– switching off48
Engine compartment115
Engine coolant, refer to
Coolant117
Engine oil
– adding116
– additives116
– BMW Maintenance
System118
– checking level115
– intervals between changes,
refer to Service
requirements61
– specified engine oils116
Engine output, refer to Engine
data146
Engine speed, refer to Engine
data146
Engine starting, refer to
Starting the engine48
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC65
Event data recorders119
Exhaust system, refer to Hot
exhaust system97Exterior mirrors41
– adjusting41
– automatic dimming
feature43
– automatic heating42
– folding in and out42
Eyes
– for tow-starting and towing
away132
– for tying down loads100
F
Failure messages, refer to
Check Control62
Failure of an electrical
consumer128
False alarm, refer to Avoiding
unintentional alarms25
Fastening safety belts, refer to
Safety belts41
Filter of automatic climate
control, refer to Microfilter/
activated charcoal filter84
Filter of heating or air
conditioner, refer to
Microfilter81
First aid pouch130
Fixture for remote control,
refer to Ignition lock47
Flash when locking/
unlocking21
Flat tire
– Run-Flat Tires112
– Tire Pressure Monitor
TPM68
Flat Tire Monitor FTM66
– indicating a flat tire67
– initializing the system66
– malfunction67
– system limits66
Flat tires, refer to Tire
condition111
Fog lamps77
– indicator lamp77,134
Footbrake, refer to Braking
safely98
Footwell lamps77
For your own safety5