
Mobility
 217Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
When refueling, insert the filler nozzle com-
pletely into the filler pipe. Avoid raising the filler 
nozzle during refueling, otherwise this leads to
>premature pump shutoff
>a reduced efficiency of the fuel-vapor 
recovery system.
The fuel tank is full when the filler nozzle clicks 
off the first time.
Fuel tank capacity
Approx. 18.5 US gal/70 liters, including the 
reserve capacity of approx. 2.1 US gal/8 liters.
550i: approx. 2.6 US gal/10 liters reserve 
capacity.
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.<
Fuel filler cap
Closing
Fit the cap and turn it clockwise until you clearly 
hear a click.
Do not jam the strap attached to the fuel 
filler cap between the fuel filler cap and 
the vehicle. A message
* is displayed if the cap 
is loose or missing.<
Fuel specifications
Do not use leaded gasoline, otherwise 
permanent damage to the catalytic con-
verter will result. 
Do not use E85, i.e. fuel that consists of 85% 
ethanol, or Flex Fuel. Otherwise permanent 
damage to the engine and the fuel supply sys-
tem will result.<
Required fuel
Super Premium Gasoline/AKI 91
This gasoline is highly recommended.
However, you may also use gasoline with less 
AKI. The minimum AKI Rating is 87.
If you use gasoline with this minimum AKI Rat-
ing, the engine may produce knocking sounds 
when starting at high outside temperatures. 
This has no affect on the engine life.
Do not use gasoline below the specified 
minimum quality, otherwise engine dam-
age can result.<
Use high-quality brands
Field experience has indicated significant dif-
ferences in fuel quality: volatility, composition, 
additives, etc., among gasolines offered for sale 
in the United States and Canada. Fuels contain-
ing up to and including 10 % ethanol or other 
oxygenates with up to 2.8 % oxygen by weight, 
that is, 15 % MTBE or 3 % methanol plus an 
equivalent amount of co-solvent, will not void 
the applicable warranties with respect to 
defects in materials or workmanship.
The use of poor-quality fuels may result in 
drivability, starting and stalling problems 
especially under certain environmental condi-
tions such as high ambient temperature and 
high altitude. 
Should you encounter drivability problems 
which you suspect could be related to the fuel 
you are using, we recommend that you respond 
by switching to a recognized high-quality brand 
such as gasoline that is advertised as Top Tier 
Detergent Gasoline. 
Failure to comply with these recommendations 
may also result in unscheduled maintenance.< 

Everything from A to Z
262
Everything from A to Z
Index
"..." Identifies Control Display 
texts used to select 
individual functions, and 
indicates where to find them 
in the text.
A
ABS Antilock Brake 
System90
– indicator/warning lamp93
ACC, refer to Active cruise 
control69
Accepted calls200
Accessories6
Accident, refer to Emergency 
call244
Acoustic signal, refer to Check 
Control82
Activated-charcoal filter for 
automatic climate 
control115
"Activation time" for parked-
car ventilation116
Active cruise control69
– indicator lamp73
– radar sensors73
– selecting distance71
– warning lamps73
Active head restraints, 
front49
Active seat52
Active seat ventilation52
Active steering98
– warning lamp98
Adapter for spare key28
Adaptive brake lamps, refer to 
Brake force display99
Adaptive Head Light109
"Add digits" for mobile 
phone200Additives
– coolant231
– engine oil, refer to Approved 
engine oils230
"Address book" for navigation 
system149
Address for navigation
– deleting151
– entering142,145
– selecting150
– storing150
– storing current position150
"Add to address book"149
"Add to destination 
list"145,146
Adjusting active backrest 
width47
Adjusting interior 
temperature112
Adjusting the tone during 
audio operation, refer to 
Tone control167
Adjusting thigh support46
Adjustment in audio mode
– front/rear balance168
– right/left balance168
"After door opened"48
"After unlocking"48
Airbags99
– indicator/warning lamp101
– indicator lamp for front 
passenger airbags100
– sitting safely45
Air distribution
– automatic112
– manual113
Airing, refer to Ventilation115
Air recirculation
– AUC Automatic 
recirculated-air control114
– recirculated-air mode114"Air recirculation on / off"55
Air supply, automatic climate 
control111
Air volume113
AKI, refer to Fuel quality217
Alarm system37
– avoiding unintentional 
alarms38
– interior motion sensor38
– switching off alarm38
– switching off tilt alarm 
sensor and interior motion 
sensor38
– tilt alarm sensor38
"All channels"177
"All doors"31
All-season tires, refer to 
Winter tires227
"All stations", calling up with 
radio170,173
All-wheel drive, refer to 
xDrive92
Alterations, technical, refer to 
For your own safety5
Altering stretch of road158
"AM", reception 
range166,170
Antenna, refer to Caring for 
your vehicle brochure
Antenna for mobile phone192
Antifreeze
– coolant231
– washer fluid68
Antilock Brake System 
ABS90
– indicator/warning lamp93
Anti-theft alarm system, refer 
to Alarm system37
Anti-theft system, refer to 
Central locking system30
Approved axle loads, refer to 
Weights255 

Everything from A to Z
268
E
Easy entry/exit54
– backrest width47
Eject button, refer to Buttons 
in area of CD player166
Electrical malfunction
– door lock32
– driver's door32
– fuel filler door216
– glass sunroof, electric43
– luggage compartment lid34
– panorama glass sunroof44
– tailgate36
Electric steering wheel 
adjustment54
Electronic brake-force 
distribution90
Electronic oil level check229
Emergency call244
Emergency operation, refer to 
Manual operation
– door lock32
– driver's door32
– fuel filler door216
– luggage compartment lid34
– tailgate36
– transmission lock, automatic 
transmission64
Emergency operation, refer to 
Moving manually
– glass sunroof43
– panorama glass sunroof44
Emergency release for 
luggage compartment lid in 
cargo bay35
Emergency services, refer to 
Roadside Assistance245
"Enable services"213
"End call"200
Energy-conscious driving, 
refer to Energy Control78
Energy Control78Engine
– breaking-in132
– data252
– overheated, refer to Coolant 
temperature77
– speed252
– starting61
– starting, with comfort 
access39
– switching off61
Engine compartment229
Engine coolant231
Engine oil
– adding230
– additives, refer to Approved 
engine oils230
– approved engine oil230
– checking oil level229
– electronic oil level check229
– interval between changes, 
refer to Service 
requirements80
– oil change230
– oil grades, refer to Approved 
engine oils230
"Engine oil level"230
Engine output, refer to Engine 
data252
Engine overheating, refer to 
Coolant temperature77
Engine speed, refer to Engine 
data252
Engine starting, refer to 
Starting engine61
"Enter address"142,150
Entering destination via town/
city name143
Entering intersection, 
navigation144
Entering the 
address142,145
Entering town/city for 
navigation143
Entering zip code for 
navigation143
"Entertainment"166
Entertainment sound output 
on/off167Entry map for destination146
Environmentally friendly 
driving, refer to Energy 
Control78
"Equalizer", refer to Tone 
control169
Equalizer, refer to Tone 
control169
"ESN"177
ESP Electronic Stability 
Program, refer to DSC 
Dynamic Stability 
Control91
Event Data Recorders233
Exhaust system, refer to Hot 
exhaust system132
Exterior mirrors52
– adjusting52
– automatic dimming 
feature53
– automatic heating53
– folding in and out53
– tilting down passenger-side 
exterior mirror53
External audio device121
Eye for tow-starting and 
towing, refer to Tow 
fitting247
F
"Fader", refer to Tone 
control168
Fader, refer to Tone 
control168
Failure messages, refer to 
Check Control82
False alarm
– refer to Avoiding 
unintentional alarms38
– refer to Switching off 
alarm38
Fastening safety belts, refer to 
Safety belts50
– warning lamp50
Fastest route for 
navigation152