1, 2, 3 ...
4ETS (Electronic Traction Support) ...53
4MATIC (permanent four-wheel
drive) .................................................. 112A
ABS (Anti-lock Braking System) .........50
Display message .................... 212, 213
Warning lamp ................................. 235
Accident
Notes ............................................. 240
Acoustic warning tone
see Warning tone ........................... 239
Active Service System PLUS
see ASSYST PLUS service interval
displa y........................................... 199
Adaptive brake lamps .........................51
Adaptive Damping System See ADS ....................................... 129
AdBlue ®
Display message ............................ 213
Service indicator ............................ 200
AdBlue ®
service indicator ................200
Additional functions (on-board
computer) .......................................... 109
ADS (Adaptive Damping System) ..... 129
Airbags Activation ......................................... 35
Control unit ...................................... 35
Driver's ............................................ 38
Front ................................................ 38
Front passenger ............................... 38
PASSENGER AIRBAG OFF warning
lamp ............................................. 234
Sidebag ............................................ 39
System ............................................. 37
Windowba g...................................... 39
Air conditioning
Activating/deactivating .................140
Activating/deactivating air-recir-
culation mode ................................ 146
Auxiliary heating/ventilation .......... 147
Controlling automatically ...............141
Convenience opening/closing
(air-recirculation mode )................. 147
Demisting the windscreen .............145 Malfunction indicator lamp
............234
Rear-compartment air condition-
ing ................................................. 139
Rear window heating .....................146
Setting the air distribution .............144
Setting the airflow .........................145
Setting the air vents ......................143
Setting the temperature ................142
Setting the temperature (rear
compartment) ................................ 142
Switching the residual heat func-
tion on/off ..................................... 147
Thermatic 2-zone automatic cli-
mate control .................................. 138
Thermotronic luxury multi-zone
automatic climate control ..............139
Air-conditioning system
see Air conditioning
Air filter
Display message ............................ 228
Air pressure
see Tyre pressure
Ambient lighting
Setting (on-board computer) .......... 106
Anti-glare film .................................... 169
Anti-lock braking system See ABS ........................................... 50
Anti-theft alarm system
See EDW .......................................... 54
Anti-theft systems ............................... 54
Ashtray ............................................... 162
ASSYST PLUS see ASSYST PLUS service interval
displa y........................................... 199
ASSYST PLUS service interval dis-
play ..................................................... 199
Calling up the date (on-board
computer) ...................................... 200
Display message ............................ 199
ATA (anti-theft alarm system) ............54
Switching off the alarm ....................54
AUTO lights
Display message ............................ 225
Automatic car wash ..........................2014
Index X164_AKB; 2; 3, en-GB
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D
Dashboard Cleaning ........................................ .204
see Instrument cluster .....................96
see Cockpit
Dashboard lighting
see Instrument lighting ....................25
Date
Setting (on-board computer) .......... 104
Daytime driving lights ......................... 80
Setting (on-board computer) .......... 105
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 105
Interior lighting (on-board com-
puter) ............................................. 106
Diesel
Low outside temperatures .............174
Diesel engine
Winter driving ................................ 174
Differential locks ............................... 116
Display message .................... 222, 223
Digital speedometer .........................100
Setting the unit (on-board com-
puter) ............................................. 104
Dipped-beam headlamps
Display message ............................ 225
Symmetrical ................................... 193
DIRECT SELECT lever
see Automatic transmission
Display messages ............................. 211
ASSYST PLUS service interval dis-
pla y................................................ 199
Symbol messages ..................219, 249
Text messages ............................... 212
Distance warning function (vehi-
cles with Distronic) .............................53
Activating/deactivating (on-
board computer) ............................ 109
Distance warning system
see Distance warning function ....... 109
Distronic ............................................ 119
Display mes-
sage ...................................... .214, 218
Driving tips .................................... 125Door
Automatic locking ............................ 60
Display message ............................ 219
Emergency locking ........................251
Emergency unlocking ..................... 250
Opening (from the inside) ................59
Door control panel
Overview .......................................... 31
Downhill Speed Regulation
See DSR ........................................ 113
Drinks holder
see Cup holder
Driver's airbag ..................................... 38
Driver's door Unlocking (KEYLESS GO) .................58
Driver's seat position ..........................78
Driving abroad ................................... 193
Driving information Off-road ......................................... 189
Tyre ruts ........................................ 193
Driving safety systems .......................49
4ETS ................................................ 53
ABS .................................................. 50
Adaptive brake lamps ......................51
BAS .................................................. 50
Distance warning system (vehi-
cles with Distronic) ..........................53
EBV .................................................. 52
ESP ®
............................................... 51
Driving systems ................................ 117
Cruise control ................................ 117
Distronic ........................................ 119
Level control .................................. 129
Parktroni c...................................... 133
Reversing camera ..........................135
Speedtronic ................................... 126
Driving tips .......................................... 94
Braking .......................................... 187
Distronic ........................................ 125
Driving abroad .............................. 193
Driving on wet roads .....................188
Fording ................................. 188, 192
Trailer towing ................................. 196
Winter ............................................ 186
DSR (Downhill Speed Regulation) ....113
Display message ............................ 223
On-board computer .......................109 Index
7 X164_AKB; 2; 3, en-GB
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Overview
.......................................... 25
Selecting the language (on-board
computer) ...................................... 104
Instrument lighting .............................25
Intelligent Light System Menu (on-board computer) ............106
Interior lighting
Ambient lighting (on-board com-
puter) ............................................. 106
Automatic control system ................84
Delayed switch-off (on-board
computer) ...................................... 106
Emergency lighting ..........................84
Manual control ................................ .83
Reading lamp ................................... 83
Interior motion sensor ........................55
Activating/deactivating (on-
board computer) ............................ 110
ISOFIX child seat securing system ....47 J
Jack .................................................... .209
Operation ....................................... 268
Jump-starting ..................................... 276
Jump leads ..................................... 276K
Key ........................................................ 58
Checking the battery .....................253
Convenience closing ........................87
Convenience opening ......................87
Display mes-
sage .............................................. 230, 231
Loss ............................................... 247
Malfunction ................................... .247
Modifying the programming .............59
KEYLESS GO
Button .............................................. 63
Changing the battery .....................254
Checking the battery .....................253
Convenience closing ........................88
Locking ............................................ 58
Malfunction ................................... .247
Starting the engine ..........................89
Unlocking ......................................... 58 Key positions
Key .................................................. 63
KEYLESS GO .................................... 63
Kickdown ....................................... 94, 96 L
Lamp see Indicator and warning lamp .....235
Lashing eyelets ................................. 156
Level control ...................................... 129
Licence plate lighting Display message ............................ 227
Lighting
see Lights
Lights
Active light function .........................82
Automatic headlamp mode ..............80
Combination switch .........................78
Daytime driving lights ......................80
Dipped-beam headlamps .................80
Display messages ..........................225
Foglamps ................................... 80, 83
Hazard warning lamps .....................81
Headlamp flasher ............................. 80
Light switch ..................................... 78
Main-beam headlamps ..................... 81
Motorway mode ............................... 82
Rear foglamp ................................... 81
Switching off (display message) ..... 227
Turn signals ..................................... 81
LIM indicator lamp
Cruise control ................................ 118
Distronic ........................................ 121
Variable Speedtronic .....................126
Loading guidelines ............................151
Locking Automatic ........................................ 60
Emergency locking ........................251
From the inside (central locking
button) ............................................. 59
LOW RANGE
Display mes-
sage ............................................... 223
Off-road gear ................................ 114
LOW RANGE off-road gear ................114
Luggage compartment enlarge-
ment ................................................... 15410
Index X164_AKB; 2; 3, en-GB
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Indicator and warning lamps
Function Page
:
ABS warning lamp (Anti-
lock Braking System)
235
;
LIM indicator lamp 126
=
ESP
®
(Electronic Stability
Program) warning lamp 235
?
Distance warning lamp*
1 53
A
Brake warning lamp 236
B
Tyre pressure monitor
warning lamp*
237
C
Turn signal indicator lamp 81
D
Turn signal indicator lamp 81
E
Seat belt warning lamp
238 Function Page
F
Diesel engine: preglow indi-
cator lamp
89
G
SRS (Supplemental
Restraint System) warning
lamp 236
H
Dipped-beam headlamps
indicator lamp 80
I
Engine diagnostics warning
lamp 237
J
Main-beam headlamps indi-
cator lamp 81
K
Reserve fuel warning lamp 239
1
On vehicles without Distronic*, the symbol lights up briefly but has no function. Instrument cluster
27At a glance
* optional
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Centre console
Function Page
:
Operates COMAND APS*
or the audio system
;
Hazard warning lamps 81
=
Selects the drive program 95
?
Adjusts the seat heating* 70
A
Seat ventilation* 69
B
Auxiliary heating* 147
C
42warning
lamp
2 43
D
Engages the differential
locks
116 Function Page
E
LOW RANGE off-road gear 114
F
DSR 113
G
Level control 129
H
ESP
® 52
I
Select ADS settings 129
J
PARKTRONIC* 133
K
Stowage compartment 152
L
Stowage compartment 153
M
Cup holder 153
2
The warning lamp also lights up briefly when you turn the key to position 2 in the ignition lock on vehicles
without automatic child seat recognition on the front-passenger seat*. It has no function, however, and does
not indicate that the front-passenger seat is equipped with automatic child seat recognition. Centre console
29At a glance
* optional
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Never tamper with electronic components
and their software.
SRS (Supplemental Restraint System)
The SRS reduces the risk of occupants com-
ing into contact with the vehicle's interior in
the event of an accident. It can also reduce
the forces to which occupants are subjected
during an accident.
The SRS consists of:
R The + warning lamp
R belt tensioners
R belt force limiters
R airbags
The + + warning lamp The SRS functions are checked regularly
when you turn on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The
+ warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started. G
Risk of injury
If SRS is malfunctioning, individual systems
may be activated unintentionally or not be
deployed in the event of an accident with
heavy braking.
A malfunction has occurred if the +warn-
ing lamp:
R does not light up when you switch on the
ignition
R does not go out after the engine has been
running for a few seconds
R lights up again once the engine is running
In this case, have SRS checked immediately
at a qualified specialist workshop. Triggering of belt tensioners, belt force
limiters and airbags In the event of a collision, the airbag control
unit evaluates important physical data such
as duration, direction and force of the vehicle
deceleration or acceleration. Based on the
evaluation of this data and in the event of lon-
gitudinal deceleration in a collision, the airbag
control unit pre-emptively triggers the belt
tensioners, depending on the rate of deceler-
ation, in the first stage.
i
The front belt tensioners can only be trig-
gered if the belt tongue is correctly
engaged in the seat belt buckle.
The front airbags are only deployed if there is
an even higher rate of vehicle deceleration in
a longitudinal direction.
Your vehicle has adaptive, dual stage front
airbags. When the first activation threshold is
reached, the front airbag is filled with enough
propellant gas to reduce the risk of injuries.
The front airbag is only fully inflated if a sec-
ond threshold is reached within a few milli-
seconds, due to the control unit having detec-
ted further deceleration.
Criteria for triggering belt tensioners and
airbags
In the first stage of a collision, the airbag con-
trol unit evaluates the duration and direction
of vehicle acceleration or deceleration in
order to determine whether it is necessary to
trigger the belt tensioner and/or airbag.
The belt tensioner and airbag triggering
thresholds are variable and are adapted to the
rate of deceleration of the vehicle. This proc-
ess is pre-emptive in nature as the airbag
must be deployed during – and not at the end
of – the collision.
i Airbags are not deployed in all types of
accidents. They are controlled by complex
sensor technology and evaluation logic.
This process is pre-emptive in nature as
airbag deployment must take place during
the impact and must be adapted to provide Occupant safety
35Safety
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affect your hearing. The powder that escapes
does not generally constitute a health hazard.
The + warning lamp lights up.
i If the belt buckle tensioners have been
triggered on the front seats, the buckle will
be pulled down and will be almost flush with
the upper edge of the seat. The +warn-
ing lamp comes on. G
Risk of injury
The belt buckle tensioners on the front seats
only function if the belt buckles can be pulled
down without obstruction. They must not be
restricted in any way. For this reason, do not
hold the belt buckles and do not place any
objects under the belt buckles. Otherwise, the
tensioning of the belt by the buckle is restric-
ted or will not function and will not provide
any additional protection. G
Risk of injury
If the seat belt tensioners have been trig-
gered, they provide no additional protection
in the event of another accident. Therefore,
have belt tensioners which have been trig-
gered replaced at a qualified specialist work-
shop.
Comply with safety regulations when dispos-
ing of belt tensioners. Any Mercedes-Benz
Service Centre can provide details of these
regulations.
Airbags Airbag deployment slows down and restricts
the movement of the vehicle occupant.
If the airbags are deployed, you will hear a
bang and a small amount of powder may also
be released. Only in rare cases will the bang
affect your hearing. The powder that escapes
does not generally constitute a health hazard.
The + warning lamp lights up.
The SRS/AIRBAG identification indicates the
location of the airbags. G
Risk of injury
Airbags provide additional protection; they
are not, however, a substitute for seat belts.
Observe the following notes to reduce the risk
of serious or even fatal injury if an airbag is
deployed:
R all vehicle occupants ― in particular, preg-
nant women ― must wear their seat belt
correctly at all times and lean back against
the backrest, which should be positioned
as close to the vertical as possible. The
head restraint must support the back of the
head at about eye level.
R always secure children less than 1.50 m tall
or under 12 years of age in suitable child
restraint systems.
R all vehicle occupants must select a seat
position that is as far away from the airbag
as possible. The driver's seat position must
allow the vehicle to be driven safely. The
driver's chest should be as far away from
the middle of the driver's front airbag cover
as possible.
R move the front-passenger seat as far back
as possible, especially if a child is secured
in a child restraint system on the seat.
R vehicle occupants – in particular, children
– must not lean their head into the area of
the window in which the sidebag/window-
bag is deployed.
R rearward-facing child restraint systems
must not be fitted to the front-passenger
seat unless the front-passenger front air-
bag has been disabled. The front-passenger
front airbag of a vehicle fitted with auto-
matic child seat recognition* is only disa-
bled when a child restraint system with
automatic child seat recognition is fitted to
the front-passenger seat. The 4
PASSENGER AIRBAG OFF warning lamp
must be continuously lit.
If the front-passenger seat of your vehicle
does not have automatic child seat recog- Occupant safety
37Safety
* optional
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the
4 PASSENGER AIRBAG OFF warning
lamp is not lit.
To alert you to this danger, a corresponding
warning sticker is located on the dashboard
and on both sides of the sun visor on the front-
passenger side.
Information about recommended child
restraint systems is available at any
Mercedes-Benz Service Centre.
Automatic child seat recognition on the
front-passenger seat
If your vehicle does not have automatic child
seat recognition on the front-passenger seat,
this is indicated by a special sticker. The
sticker is affixed to the side of the dashboard
on the front-passenger side. It is visible when
you open the front-passenger door.
The warning lamp 3
is located on the centre
console. The sensors for the automatic child seat rec-
ognition on the front-passenger seat detects
whether a special Mercedes-Benz child seat
with automatic child seat recognition has
been fitted. In such cases, 4PASSENGER
AIRBAG OFF warning lamp :lights up. The
front-passenger front airbag is disabled. G
Risk of injury
If the 4 PASSENGER AIRBAG OFF warning
lamp does not light up when the child restraint
system is fitted, the front-passenger front air- bag has not been disabled. If the front-
passenger front airbag is deployed, the child
could be seriously or even fatally injured.
Proceed as follows:
R
do not use a rearward-facing child restraint
system on the front-passenger seat.
R fit a rearward-facing child restraint system
on a suitable rear seat.
or
R only use a forward-facing child restraint
system on the front-passenger seat and
move the front-passenger seat to its rear-
most position.
R have the automatic child seat recognition
checked at a qualified specialist workshop.
To ensure that the automatic child seat rec-
ognition on the front-passenger seat func-
tions correctly, never place objects (such as
a cushion) under the child restraint system.
The entire base of the child restraint system
must always rest on the seat cushion. An
incorrectly fitted child restraint system can-
not perform its intended protective function
in the event of an accident, and could lead to
injuries.
i The windowbag, the sidebag and the belt
tensioner on the front-passenger side are
still active even if the front-passenger front
airbag is disabled by the automatic child-
seat recognition on the front-passenger
seat. G
Risk of injury
Do not place electronic devices on the front-
passenger seat, e.g.:
R laptops, when switched on
R mobile phones
R cards with transponders, e.g. ski passes or
access cards
3 Vehicles without automatic child seat recognition in the front-passenger seat: the warning lamp lights up
briefly when you turn the key to position 2 in the ignition lock. However, it has no function and does not
indicate that there is automatic child seat recognition on the front-passenger seat. Occupant safety
43Safety
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