1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 256
12 V socket
see Sockets
115 V socket ...................................... 354
360° camera
Cleaning ........................................ .3 80
Function/notes ............................ .2 36
AABS (Anti-lock Braking System)
Display message ............................ 291
Function/notes ................................ 68
Important safety notes .................... 68
Warning lamp ................................. 327
Accident
Automatic measures after an acci-
dent ................................................. 60
Activating/deactivating cooling
with air dehumidification ................. 153
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 282
Display message ............................ 314
Function/information .................... 248
Trailer towing ................................. 251
Active Curve System
Display message ............................ 311
Function/notes ............................. 219
Active Driving Assistance package .. 248
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 282
Display message ............................ 314
Function/information .................... 251
Trailer towing ................................. 254
Active Parking Assist
Display message ............................ 315
Exiting a parking space .................. 230
Function/notes ............................. 227
Important safety notes .................. 227
Parking .......................................... 229 Towing a trailer .............................. 231
ADAPTIVE BRAKE ................................. 76
Adaptive Brake Assist
Display message ............................ 298
Function/notes ................................ 72
Adaptive Highbeam Assist
Display message ............................ 306
Function/notes ............................. 134
Switching on/off ........................... 134
Additives (engine oil) ........................ 451
ADS (Adaptive Damping System)
Function/notes ............................. 218
Air bags
Deployment ..................................... 58
Display message ............................ 301
Front air bag (driver, front
passenger) ....................................... 51
Important safety notes .................... 50
Introduction ..................................... 50
Knee bag .......................................... 52
Occupant Classification System
(OCS) ............................................... 53
PASSENGER AIR BAG OFF indica-
tor lamp ........................................... 45
Sid e
impact air bag .......................... 52
Window curtain air bag .................... 53
Air filter (display message) .............. 309
AIR FLOW ........................................... 155
Air vents
Glove box ....................................... 161
Important safety notes .................. 160
Rear ............................................... 161
Setting ........................................... 160
Setting the center air vents ........... 160
Setting the side air vents ............... 161
Air-conditioning system
see Climate control
AIRMATIC package
ADS (Adaptive Damping System) ... 218
Function/notes ............................. 218
Level control .................................. 219
Alarm
ATA (Anti-Theft Alarm system) ......... 78
Switching off (ATA) .......................... 78
Switching the function on/off
(ATA) ................................................ 78
Alarm system
see ATA (Anti-Theft Alarm system)4
Index
Useful information
i This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops ( Y
page 29).
Overview of climate control systems
General notesObserve the settings recommended on the
following pages. The windows could other-
wise fog up.
To prevent the windows from fogging up: R
switch off climate control only briefly R
switch on air-recirculation mode only
briefly R
switch on the cooling with air dehumidifi-
cation function R
switch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control can only be operated when
the engine is running. Optimum operation is
only achieved with the side windows and roof
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off ( Y
page 159).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature ( Y
page 99).
This will speed up the cooling process and
the desired interior temperature will be
reached more quickly. i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol-
lutants and odors. A clogged filter reduces
the amount of air supplied to the vehicle
interior. For this reason, you should always
observe the interval for replacing the filter,
which is specified in the Maintenance
Booklet. As it depends on environmental
conditions, e.g. heavy air pollution, the
interval may be shorter than stated in the
Maintenance Booklet.
i It is possible that under certain circum-
stances the residual heat function may be
activated automatically an hour after the
SmartKey has been removed in order to dry
the automatic climate control. The vehicle
is then ventilated for 30 minutes.144
Overview of climate control systems
Climate control
If you or others come into contact with fuel,
observe the following: R
Wash away fuel from skin immediately
using soap and water. R
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay. R
If fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing. R
Immediately change out of clothing which
has come into contact with fuel.
G WARNING
Electrostatic buildup can create sparks and
ignite fuel vapors. There is a risk of fire and
explosion.
Always touch the vehicle body before opening
the fuel filler flap or touching the fuel pump
nozzle. Any existing electrostatic buildup is
thereby discharged.
G WARNING
Vehicles with a diesel engine:
If you mix diesel fuel with gasoline, the flash
point is lower than that of pure diesel fuel.
When the engine is running, exhaust system
components could overheat without being
noticed. There is a risk of fire.
Never refuel with gasoline. Never mix gasoline
with diesel fuel.
! Do not use gasoline to refuel vehicles with
a diesel engine. Do not switch on the igni-
tion if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. The repair
costs are high. Notify a qualified specialist
workshop and have the fuel tank and fuel
lines drained completely.
! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the igni- tion if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. Notify a quali-
fied specialist workshop and have the fuel
tank and fuel lines drained completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection
system could be blocked by particles from
the fuel can.
Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.
If you overfill the fuel tank, fuel could spray
out when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
( Y
page 447).
Refueling
General information
Pay attention to the important safety notes
( Y
page 182).
The fuel filler flap is unlocked or locked auto-
matically when you unlock or lock the vehicle
with the SmartKey or using KEYLESS-GO.
The position of the fuel filler cap is displayed
Do not use DISTRONIC PLUS: R
in road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid R
when there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired if: R
there is dirt on the sensors or anything else
covering the sensors R
there is snow or heavy rain R
there is interference by other radar sources R
there are strong radar reflections, for
example, in parking garages
If DISTRONIC PLUS no longer detects a vehi-
cle in front, DISTRONIC PLUS may unexpect-
edly accelerate the vehicle to the stored
speed.
This speed may: R
be too high if you are driving in a filter lane
or an exit lane R
be so high when driving in the right-hand
lane that you overtake vehicles in the left-
hand lane R
be so high when driving in the left-hand lane
that you overtake vehicles in the right-hand
lane
If there is a change of drivers, advise the new
driver of the speed stored. Cruise control lever
C
To activate or increase speed D
To activate or reduce speed