
1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 215
12 V socket
see Sockets
115 V socket ...................................... 307
360° camera
Cleaning ........................................ .3 28
Display in the multimedia system .. 202
Function/notes ............................ .2 01
AABS (Anti-lock Braking System)
Display message ............................ 245
Function/notes ................................ 63
Important safety notes .................... 63
Warning lamp ................................. 277
Accident
Automatic measures after an acci-
dent ................................................. 56
Activating media mode
General notes ................................ 292
Activating/deactivating cooling
with air dehumidification ................. 130
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 238
Display message ............................ 265
Function/information .................... 210
Trailer towing ................................. 213
Active Brake Assist
Activating or deactivating .............. 237
Display message ............................ 250
Function/notes ................................ 64
Active Brake Assist with cross-
traffic function
Activating or deactivating .............. 237
Display message ............................ 251
Function/notes ................................ 69
Important safety notes .................... 70
Warning lamp ................................. 285
Active Curve System
Display message ............................ 262 Function/notes ............................. 187
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 238
Display message ............................ 264
Function/information .................... 213
Trailer towing ................................. 215
Active light function ......................... 114
ADAPTIVE BRAKE ................................. 69
Adaptive Brake Assist
Function/notes ................................ 65
Adaptive Damping System
Function/notes ............................. 189
Adaptive Highbeam Assist
Display message ............................ 257
Function/notes ............................. 115
Switching on/off ........................... 116
Additives (engine oil) ........................ 382
Address book
see also Digital Operator's Man-
ual .................................................. 287
Adjusting the volume
Audio 20 ........................................ 288
COMAND ....................................... 288
ADS (Adaptive Damping System)
Function/note s ............................. 186
A i r bags
Deployment ..................................... 53
Display message ............................ 254
Front air bag (driver, front
passenger) ....................................... 47
Important safety notes .................... 46
Introduction ..................................... 46
Knee bag .......................................... 47
Occupant Classification System
(OCS) ............................................... 48
PASSENGER AIR BAG indicator
lamps ............................................... 42
Side impact air bag .......................... 48
Window curtain air bag .................... 48
Air filter (display message) .............. 260
AIR FLOW ........................................... 130
Air vents
Glove box ....................................... 135
Important safety notes .................. 134
Rear ............................................... 135
Setting ........................................... 1344
Index

R
a driving safety system intervenes, e.g. ESP ®
,
PRE-SAFE ®
Brake or Active Blind Spot Assist.R
you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration. R
ESP ®
is switched off.R
the transmission is not in position D .R
on vehicles with a trailer tow hitch, the elec-
trical connection to the trailer has been cor-
rectly established. R
the offroad program is activated (vehicles
without the Offroad Engineering package). R
the Offroad or Offroad Plus drive program is
activated (vehicles with the Off-Road Engi-
neering package). R
the LOW RANGE offroad gear is activated
(vehicles with the Offroad Engineering pack-
age). R
an obstacle has been detected in the lane in
which you are driving. R
when a loss of tire pressure or a defective tire
has been detected and displayed.
There is a possibility that the Active Lane Keep-
ing Assist could misjudge the given traffic sit-
uation. An inappropriate brake application may
be interrupted at any time if you: R
steer slightly in the opposite direction. R
switch on the turn signal. R
clearly brake or accelerate.
A lane-correcting brake application is interrup-
ted automatically if: R
a driving safety system intervenes, e.g. ESP ®
,
PRE-SAFE ®
Brake or Active Blind Spot Assist.R
lane markings are no longer detected.
Switching on Active Lane Keeping Assist X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard or Adaptive ( Y
page 238).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
( Y
page 237) are shown in green. Active Lane
Keeping Assist is ready for use.
If Standard is selected, no warning vibration
occurs if: R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time. R
a driving safety system intervenes, such as
ABS, BAS or ESP ®
.
When Adaptive
is selected, no warning vibra-
tion occurs if: R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time. R
a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
. R
you accelerate hard, e.g. kickdown. R
you brake hard. R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly. R
you cut the corner on a sharp bend.
Towing a trailer When you attach a trailer, make sure you have
correctly established the electrical connection.
This can be accomplished by checking the trailer
lighting. Lane-correcting brake application does
not take place when towing a trailer. Active Lane
Keeping Assist is not activated and the lines in
the assistance graphic are gray.
Off-road driving systems
4MATIC (permanent four-wheel drive) 4MATIC ensures that all four wheels are perma-
nently driven. Together with ESP ®
and 4ETS, it
improves the traction of your vehicle whenever
a drive wheel spins due to insufficient grip.
If you fail to adapt your driving style, 4MATIC can
neither reduce the risk of accident nor override
the laws of physics. 4MATIC cannot take
account of road, weather and traffic conditions.
4MATIC is only an aid. You are responsible for
the distance to the vehicle in front, for vehicle
speed, for braking in good time and for staying in
your lane.
! Never tow the vehicle with one axle raised.
This may damage the transfer case. Damage
of this sort is not covered by the Mercedes-
Benz Limited Warranty. All wheels must
remain either on the ground or be fully raised.
Observe the instructions for towing the vehi-
cle with all wheels in full contact with the
ground.Driving systems 215
Driving and parking Z

You can find more tire pressure values for
various operating conditions in the tire pres-
sure table inside the fuel filler flap
( Y
page 349).X
Make sure that the tire pressure is correct on
all four wheels. X
Make sure that the SmartKey is in position 2
in the ignition lock. X
Press the Y or e button on the steering
wheel to select the Serv. menu.X
Press the c or d button to select
Tire Pressure .X
Press the v button.
The multifunction display shows the current
tire pressure for the individual tires or the
Tire pressure will be displayed
after driving a few minutes message.X
Press the d button.
The Use Current Pressures as New Ref‐
erence Values message appears in the mul-
tifunction display.
If you wish to confirm the restart: X
Press the v button.
The Tire Press. Monitor Restarted mes-
sage appears in the multifunction display.
After driving for a few minutes, the system
checks whether the current tire pressures are
within the specified range. The new tire pres-
sures are then accepted as reference values
and monitored.
If you wish to cancel the restart: X
Press the 8 button.
The tire pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tire pres-
sure monitor Country Radio type approval number
USA FCC ID: MRXMW2433A
FCC ID: MRXGG4
FCC ID: MRXMC34MA4
Canada IC: 2546A-MW2433A
IC: 2546A-GG4
IC: 2546A-MC34MA4 Loading the vehicle
Instruction labels for tires and loads
G WARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair the
steering and driving characteristics and lead
to brake failure. There is a risk of accident.
Observe the load rating of the tires. The load
rating must be at least half of the GAWR of
your vehicle. Never overload the tires by
exceeding the maximum load.
Two instruction labels on your vehicle show the
maximum possible load.
(1) The Tire and Loading Information placard is
on the B-pillar on the driver's side. The Tire
and Loading Information placard shows the
maximum permissible number of occu-
pants and the maximum permissible vehicle
load. It also contains details of the tire sizes
and corresponding pressures for tires
mounted at the factory.
(2) The vehicle identification plate is on the B-
pillar on the driver's side. The vehicle iden-
tification plate informs you of the gross
vehicle weight rating. It is made up of the
vehicle weight, all vehicle occupants, the
fuel and the cargo. You can also find infor-
mation about the maximum gross axle
weight rating on the front and rear axle.
The maximum gross axle weight rating is
the maximum weight that can be carried by
one axle (front or rear axle). Never exceed
the maximum load or the maximum gross
axle weight rating for the front or rear axle.356
Loading the vehicle
Wheels and tires