Page 180 of 220

Under the hood
178
Engine compartment 
1Filler neck for engine oil, refer to Top-
ping up engine oil 
2Brake fluid reservoir, located beneath 
the microfilter cover, refer to page 180
3Starting-aid terminal, refer to page 192
4Dipstick for engine oil, refer to Check-
ing the oil level. The dipstick is further 
toward the rear on the 545i
5Washer fluid reservoir of the headlamp 
and windshield cleaning systems, refer 
to page 57
6Expansion tank for coolant, refer to 
page 179
Engine oil 
Checking oil level 
1.Park the vehicle on a level surface 
2.Switch the engine off after it has 
reached normal operating temperature 
3.After approx. 5 minutes, pull the dip-
stick 4 out and wipe it off with a clean 
lint-free cloth, paper towel, or similar 
material 4.Carefully push the dipstick all the way 
into the guide tube and pull it out again 
5.The oil should extend to between the 
two marks on the dipstick. 
As is the case with fuel economy, the rate 
at which the engine uses oil is strongly 
influenced by driving style and operating 
conditions.
The oil quantity between the two marks on 
the dipstick is approx. 1.6 US quarts/
1.5  liters. Do not fill beyond the upper mark 
on the dipstick. Excess oil can damage the 
engine.  
     
        
        Page 181 of 220

Mobility
 179Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Adding engine oil 
Wait until the level has dropped to just 
above the lower mark or a message 
appears on the Control Display before add-
ing oil. 
BMW engines are designed to oper-
ate without additives, and their use 
could even lead to damage in some cases. 
This also applies to the automatic transmis-
sion, the differential and the power steering 
system.<
Recommendation: have oil changes per-
formed only by your BMW center. 
Continuous exposure to used oil has 
caused cancer in laboratory testing. 
For this reason, any skin areas that come 
into contact with oil should be thoroughly 
washed with soap and water.
Store oil, grease, etc., well out of the reach 
of children; always observe all warning 
labels on the containers.<
Always observe all applicable rules 
and regulations for environmental 
protection when disposing of used oil.<
Specified engine oils
The quality of the engine oil selected has 
critical significance for the operation and 
service life of an engine. BMW approves 
only specific oils after confirming their suit-
ability for use in its vehicles with extensive 
testing.
Use only approved BMW High Perfor-
mance Synthetic Oil.
If you are unable to obtain BMW High Per-
formance Synthetic Oil, you can add small 
amounts of another synthetic oil between 
oil changes. Use only oils with the API SH 
specification or higher. Ask your BMW center for details con-
cerning the specific BMW High Per-
formance Synthetic Oil or synthetic oils 
which have been approved.< 
You can also call BMW of North America at 
1-800-831-1117 or visit this website: 
www.bmwusa.com to obtain this informa-
tion. 
Viscosity ratings
Viscosity is the oil flow rating as defined in 
SAE classes. 
The selection of the correct SAE class 
depends on the climatic conditions in the 
area where you typically drive your BMW. 
Approved oils are in SAE classes 
5W-40 and 5W-30.< 
These oils may be used for driving in all 
ambient temperatures.
Coolant 
Do not add coolant to the cooling sys-
tem when the engine is hot. Escaping 
coolant can cause burns.
Antifreeze and anticorrosion agents are 
hazardous to health. Always store these 
agents in tightly-closed original containers 
kept well away from the reach of children. 
Antifreeze and anticorrosion agents are 
flammable. Therefore, do not pour over hot 
engine parts, as otherwise they could catch 
fire and cause burns. 
Always observe the instructions for use 
provided on the containers.<
Always observe all applicable rules 
and regulations for environmental 
protection when disposing of used anti-
freeze and anticorrosion agents.< 
     
        
        Page 204 of 220

Everything from A to Z
202
Everything from A to Z
Index
A
ABS Antilock Brake 
System 77
Ð indicator lamp 77
Acceleration assistant 54
Accessories, refer to Your 
individual vehicle 5
"Activation time" for 
independent 
ventilation 95
Active cruise control 59
Ð malfunctions 64
Active head restraints, 
front 40
Active roll stabilization 80
Active seat 42
Active seat ventilation 42
Active steering 82
Adaptive Head Light 88
"Address book" for 
navigation 120
Address for navigation
Ð deleting 120
Ð entering 116
Ð selecting 120
"Add to address book" for 
navigation 120
"Add to destination 
list" 118
Adjusting temperature for 
upper body 93
Adjusting the thigh 
support 37
"After door is opened" 39
"After unlocking" 39
Airbags 83
Ð indicator lamp 84
Ð sitting safely 36
Air circulation, refer to 
Recirculated air 91
Air distribution
Ð automatic 91
Ð individual 93Air flow, refer to Air 
volume 91
Airing, refer to 
Ventilation 94
"Air recirculation on / 
off" 44
Air vent outlets of 
automatic climate 
control 90
Air volume 91
AKI, refer to Fuel 
specifications 169
Alarm system 32
Ð avoiding unintentional 
alarms 33
All around the steering 
wheel 10
"All channels" 138
"All doors" 28
All-season tires, refer to 
Winter tires 175
"AM", wave-
band 130, 134
Antenna for portable 
phone 150
Antifreeze
Ð coolant 179
Ð washer fluid 57
Anti-theft system 27
Anti-trapping mechanism
Ð glass roof 35
Ð windows 34
Approved axle loads, refer 
to Weights 200
Approved gross vehicle 
weight, refer to 
Weights 200
Arrival time, refer to 
Computer 71
Ashtray
Ð front 99
Ð rear 100
Assistance window 18Assisting systems, refer to 
DSC Dynamic Stability 
Control 78
AUC Automatic 
recirculated-air 
control 91
"Audio" 131
Audio 130
Ð adjusting the tone 131
Ð controls 130
Ð switching on/off 130
Ð volume 131
Audio systems, refer to 
Tone control 131
Automatic
Ð air distribution 91
Ð air volume 91
Ð cruise control 58, 59
Ð storing stations 135
Automatic car wash, refer 
to Caring for your vehicle 
brochure
Automatic climate 
control 90
Ð automatic air 
distribution 91
Ð settings using the Control 
Center 92
Ð switching off 92
Automatic curb monitor 39
Automatic headlamp 
control 87
"Automatic programs" 93
Automatic recirculated-air 
control AUC 91
Automatic steering wheel
Ð adjustment 43