Defrosting the windows ................. 141
Defrosting the windshield .............. 141
ECO start/stop function ................ 137
General notes ................................ 136
Indicator lamp ................................ 139
Ionization ....................................... 146
Notes on using the automatic cli-
mate control .................................. 137
Overview of systems ...................... 136
Perfume atomizer .......................... 144
Problem with the rear window
defroster ........................................ 143
Problems with cooling with air
dehumidification ............................ 139
Refrigerant ..................................... 405
Refrigerant filling capacity ............. 406
Setting the air distribution ............. 140
Setting the air vents ...................... 146
Setting the airflow ......................... 141
Setting the climate mode ............... 140
Setting the temperature ................ 140
Switching air-recirculation mode
on/off ............................................ 143
Switching on/off ........................... 138
Switching residual heat on/off ...... 143
Switching the rear window
defroster on/off ............................ 142
Switching the synchronization
function on and off ........................ 141
Climate control system
Climate control .............................. 138
Cockpit
Overview .......................................... 32
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 245
Display message ............................ 259
Operation/notes .............................. 70
COMAND display
Cleaning ......................................... 337
Combination switch .......................... 126
Consumption statistics (on-board
computer) .......................................... 236
Convenience closing feature .............. 99
Convenience opening feature ............ 99
Coolant (engine)
Checking the level ......................... 328
Display message ............................ 268 Filling capacity ............................... 405
Important safety notes .................. 404
Temperature gauge ........................ 231
Warning lamp ................................. 294
Coolbox .............................................. 308
C
ooling
see Climate control
Copyright ............................................. 29
Cornering light function
Display message ............................ 265
Function/notes ............................. 127
Crash-responsive emergency light-
ing ....................................................... 130
Crosswind Assist (vehicles with
MAGIC BODY CONTROL) ................... 194
Crosswind Assist (vehicles with-
out MAGIC BODY CONTROL) ............... 74
Cruise control
Calling up the speed last stored .... 180
Cruise control lever ....................... 180
Deactivating ................................... 181
Display message ............................ 278
Driving system ............................... 179
Function/notes ............................. 179
General notes ................................ 179
Important safety notes .................. 179
Setting a speed .............................. 181
Storing and maintaining current
speed ............................................. 180
Cup holder
Center console .............................. 304
Important safety notes .................. 304
Rear compartment ......................... 305
Customer Assistance Center
(CAC) ..................................................... 27
Customer Relations Department ....... 27
D
Data
see Technical data
Data carrier
Selecting ........................................ 240
Daytime running lamps
Display message ............................ 267
Function/notes ............................. 124
Switching on/off (on-board com-
puter) ............................................. 248
Index7 
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of
the vehicle including all accessories, occu-
pants, fuel, luggage and the drawbar nose-
weight, if applicable). The gross vehicle
weight rating is specified on the vehicle iden-
tification plate on the B-pillar on the driver's
side.
Maximum loaded vehicle weight
The maximum weight is the sum of:
Rthe curb weight of the vehicle
Rthe weight of the accessories
Rthe load limit
Rthe weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa corre-
sponds to 1 psi. Another unit for tire pressure is bar. 100 kilopascals (kPa) are the equiva-
lent of 1 bar.
Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewall of
the tire. This specifies the load-bearing capa-
city more precisely.
Curb weight
The weight of a vehicle with standard equip-
ment including the maximum capacity of fuel,
oil and coolant. It also includes the air-condi-
tioning system and optional equipment if
these are installed in the vehicle, but does not
include passengers or luggage.
Maximum load rating
The maximum load rating is the maximum
permissible weight in kilograms or lbs for
which a tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire. Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two.
PSI (pounds per square inch)
A standard unit of measure for tire pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
This is pressure inside the tire applying an
outward force to each square inch of the
tire's
su
rface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold.
Cold tire pressure
The tires are cold:
Rif the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
Rif the vehicle has not been driven further
than 1 mile (1.6 km)
Tread
The part of the tire that comes into contact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras that weigh more than the replaced standard
parts and more than 5 lbs (2.3 kg). These
optional extras, such as high-performance
brakes, level control, a roof rack or a high-
382All about wheels and tires
Wheels and tires