Mobility
 209Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Fuel specifications
Never used leaded gasoline; it will perma-
nently damage the catalytic converter. 
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 demonstrated significant 
differences in fuel quality: volatility, composi-
tion, additives, etc., among gasolines offered for 
sale in the United States and Canada. Fuels 
containing 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 
problems relating to drivability and start-
ing, and to a tendency to stall, especially under 
certain environmental conditions 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
242
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 
System86
– indicator lamp88
ACC, refer to Active cruise 
control66
Accepted calls192
Accessories6
Accident, refer to Emergency 
request227
Activated-charcoal filter for 
automatic climate 
control112
Activating hour signal83
"Activation time" for parked-
car ventilation113
Active cruise control66
– indicator lamp70
– radar sensor71
– selecting distance69
– warning lamps70
Active front head restraints50
Active steering93
– warning lamp93
Adapter for spare key28
Adaptive brake assistant87
Adaptive brake lamps, refer to 
Brake force display93
Adaptive Head Light104
"Add digits" for mobile 
phone192
Additives
– coolant219
– engine oil, refer to Approved 
engine oils219"Address book" for navigation 
system142
Address for navigation
– deleting143
– entering134,137
– selecting142
– storing142
– storing current position142
"Add to address book"141
"Add to destination 
list"137,139
Adjusting interior 
temperature109
Adjusting thigh support48
Adjusting tone in audio mode, 
refer to Tone control159
"After door opened"50
"After unlocking"50
Airbags94
– deactivating, refer to 
Exception for front 
passenger seat56
– indicator/warning lamp95
– indicator lamp for front 
passenger airbags95
– sitting safely47
Air distribution
– automatic109
– manual110
Airing, refer to Ventilation112
Air outlets, refer to 
Ventilation112
Air recirculation, refer to AUC 
Automatic recirculated-air 
control111
"Air recirculation on / off"55
Air supply, automatic climate 
control108
Air volume110
AKI, refer to Fuel 
specifications209Alarm system35
– avoiding unintentional 
alarms36
– interior motion sensor36
– switching off alarm35
– switching off tilt alarm 
sensor and interior motion 
sensor36
– tilt alarm sensor36
"All channels"170
"All doors"30
All-season tires, refer to 
Winter tires215
"All stations", calling up with 
radio162,165
Alterations, technical, refer to 
For your own safety6
"AM", reception 
range158,162
Antenna, refer to Caring for 
your vehicle brochure
Antenna for mobile phone184
Antifreeze
– coolant219
– washer fluid65
Antilock Brake System 
ABS86
Anti-theft alarm system, refer 
to Alarm system35
Anti-theft system, refer to 
Central locking system30
Approved axle loads, refer to 
Weights237
Approved engine oils219
Approved gross vehicle 
weight, refer to Weights237
Armrest, refer to Center 
armrest117
Around the center console14
Around the steering wheel10