
Warning symbol for a rearward-facing child
restraint system G
WARNING
If the front-passenger front airbag is not dis-
abled:
R a child secured in a child restraint system
on the front-passenger seat could be seri-
ously and even fatally injured by the front-
passenger fron tairbag deploying .This is
especially a risk if the child is in the imme-
diate vicinity of the front-passenger front
airbag when it deploys.
R never secure a child on the front-passenger
seat in a rearward-facing child restraint sys-
tem.
R always move the front-passenger seat to
the rearmost position if you secure a child
in a forward-facing child restraint system
on the front-passenger seat.
The front-passenger front airbag is not disa-
bled:
R if no child restraint system with a trans-
ponder for automatic child seat recognition
is fitted to the front-passenger seat. In
order to make use of the automatic child
seat recognition, a Mercedes-Benz
approved child seat with a transponder is
necessary.
R if the _ PASSENGER AIRBAG ON indi-
cator lamp lights up for 60 seconds after
the ignition is switched on and the 4
PASSENGER AIRBAG OFF indicator lamp
does not light up.
To make you aware of this danger, a corre-
sponding warning sticker has been affixed 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.
Do not use a rearward-facing child restraint
system for a child on aseat which is already
protected by an airbag.
Automatic child seat recognition on the
front-passenger seat The front-passenger seat sensor system for
child restraint systems detects whether a
special Mercedes-Benzc
hild seat with a
transponder for automatic child seat recog-
nition has been fitted. If so, the _
PASSENGER AIRBAG ON indicator lamp ;
lights up briefly when the ignition is switched
on, and the aPASSENGER AIRBAG OFF
indicator lamp :remains lit. The front-
passenger front airbag is disabled. G
WARNING
If the 4 PASSENGER AIRBAG OFF indica-
tor lamp does not light up when the child
restraint system is fitted, the front-passenger
airbag has not been disabled. If the front-
passenger airbag deploys, 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.
or Children in the vehicle
49Safety
Z 

R
only use a forward-facin gchild restraint
system on the front-passenger seat and
move the front-passenger seat to the 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/communicates correctly, never place
objects, e.g. 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 cannot perform its intended protec-
tive function in the event of an accident, and
could lead to injuries.
i If the front-passenger front airbag is dis-
abled by the automatic child seat recogni-
tion, the following remain enabled on the
front-passenger side:
R the sidebag
R the headbag
R the belt tensioner G
WARNING
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
Signals from electronic equipment can cause
interference in the automatic child seat rec-
ognition sensor system. This can lead to a
system malfunction. Due to the interfering
signal, the _PASSENGER AIRBAG ON
indicator lamp, the 4PASSENGER AIR-
BAG OFF indicator lamp and the 6SRS
warning lamp may all light up simultaneously.
The 4 PASSENGER AIRBAG OFF indicator
lamp may light up without achild seat with
automatic child seat recognition being fitted.
The front-passenger airbag will not deploy
during an accident. When you switch on the ignition, it is also
possible that:
R the 6 SRS warning lamp lights up
R the 4 PASSENGER AIRBAG OFF indica-
tor lamp does not light up briefly
R the _ PASSENGER AIRBAG ON indica-
tor lamp does not light up, or lights up and
does not go out after 60 seconds. 50
Children in the vehicleSafety 

Problems with child seat recognition
Problem Possible causes/consequences and
M Solutions
The
4 PASSENGER
AIRBAG OFF indicator
lamp on the centre con-
sole is lit. As
pecial Mercedes-Benz child seat with a transponder for auto-
matic child seat recognition has been fitted to the front-passenger
seat. The front-passenger airbag has therefore been disabled as
desired. G
Risk of injury
There is no child seat fitted to the front-passenger seat. Automatic
child seat recognition is malfunctioning.
When you switch on the ignition, it is also possible that:
R the 6 SRS warning lamp lights up.
R The a PASSENGER AIRBAG OFF indicator lamp does not
light up briefly.
R The _ PASSENGER AIRBAG ON indicator lamp does not light
up, or lights up and does not go out after 60 seconds.
X Remove electronic equipment from the front-passenger seat,
e.g.
R laptop
R mobile phone
R cards with transponders, such as ski passes or access cards
If the 4 PASSENGER AIRBAG OFF indicator lamp is still lit:
X Visit a qualified specialist workshop. Suitable positioning of the child restraint systems
Key to the letters used in the table:
XS
eat which is unsuitable for children in this weight category.
US uitable for child restraint systems in the Universal category that are approved for use in
this weigh tcategory.
UF Suitable for forward-facing child restraint systems that belong to the "Universal" category and are approved for use in this weigh tcategory.
LS uitable for child restraint systems as recommended, see the following table of "Recom-
mended child restraint systems" (Y page 52). Children in the vehicle
51Safety Z 

Seat positions
Front-passenger seat
Weight categories Front-passenger airbag is
not disabled: The front-passenger air-
bag is disabled
1 Group 0: up to 10 kg
X
U
2
, L 2 Group 0+: up to 13 kg
X
U
2
, L 2 Group I: 9 to 18 kg
UF
2
, L 2 U
2
, L 2 Group II: 15 to 25 kg
UF
2
, L 2 U
2
, L 2 Group III: 22 to 36 kg
UF
2
, L 2 U
2
, L 2 "Universal" category child restraint systems can be recognised by their orange approval label.
Example: approval label on the child restraint system
Recommended child restraint systems If you secure a forward-facing child restraint system without transponder for automatic child
seat recognition to the front-passenger seat:
X Move the front-passenger seat to its highest and rearmost position.
1 Vehicles with automatic child seat recognition in the front-passenger seat: a child restraint system of the
"Universal" category with a transponder for automatic child seat recognition must be fitted. The 4
PASSENGER AIRBAG OFF indicator lamp must be lit.
2 Move the front-passenger seat to the rearmost and highest position. 52
Children in the vehicleSafety 

Combination switch
Turn signals :
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left
X To indicate briefly: press the combination
switch briefly to the pressure poin tinthe
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
X To indicate: press the combination switch
beyond the pressure point in the direction
of arrow ;or?.
Main-beam headlamps X
To switch on the main-beam head-
lamps: turn the key in the ignition lock to
position 2or start the engine.
X Turn the light switch to LorÃ.
X Press the combination switch beyond the
pressure point in the direction of
arrow :.
In the Ãposition, the main-beam head-
lamps are only switched on when it is dark
and the engine is running. The
K indicator lamp in the instrument
cluster lights up when the main-beam head-
lamps are switched on.
X To switch off the main-beam head-
lamps: move the combination switch back
to its normal position.
The K indicator lamp in the instrument
cluster goes out.
Headlamp flasher X
To switch on: turn the key in the ignition
lock to position 1or 2or start the engine.
X Pull the combination switch in the direction
of arrow =. Hazard warning lamps
The hazard warning lamps automatically
switch on if:
R
an airbag is deployed.
R the vehicle decelerates rapidly from a
speed of more than 70 km/h and comes to
a standstill.
X To switch on the hazard warning lamps:
press button :.
All turn signals flash. If you now switch on
a turn signal using the combination switch,
only the turn signal lamp on the corre-
sponding side of the vehicle will flash.
X To switch off the hazard warning
lamps: press button :.
The hazard warning lamps switch off auto-
matically if the vehicle reaches a speed of Exterior lighting
103Lights and windscreen wipers Z 

Display messages Possible causes/consequences and
M Solutions
!
Turn on the igni‐
tion to release
the parking brake The red
!indicato rlamp is lit.
You attempted to release the electric parking brak ewhile the igni-
tion was switched off.
X Key: turn the key to position 1in the ignition lock.
X KEYLESS-GO: switch on the ignition. J
Brake immediately A malfunction has occurred while the HOLD function or DIS-
TRONIC PLUS is active.
At
one may also sound at regular intervals. If you attempt to lock
the vehicle, the tone becomes louder.
You cannot start the engine.
X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message disap-
pears.
X Prevent the vehicle from rolling away before you leave it
(Y page 267).
You can restart the engine. J
Check brake fluid
level G
Risk of accident
There is insufficien tbrake fluid in the brake fluid reservoir. In addi-
tion, the red Jwarning lamp lights up in the instrument cluster
and a warning tone sounds.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Engage the electric parking brake.
X Consult a qualified specialist workshop.
X Do not top up the brake fluid. This does not correct the error. #
Check brake wear The brake pads/linings have reached their wearl
imit.
X Visit a qualified specialist workshop. PRE-SAFE
inoperative See
Owner's Manual G
Risk of injury
Important function sof PRE-SAFE ®
have failed .All other occupant
safety systems, e.g. airbags, remain available.
X Visit a qualified specialist workshop immediately. 206
Display messagesOn-board computer and displays 

Problem Possible causes/consequences and
M Solutions
֌
The yellow ESP
®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. G
Risk of accident
ESP ®
,B AS, PRE-SAFE ®
, the HOLD functio nand hill start assist are
temporarily unavailable.
The adaptive brake lights, BAS PLUS and PRE-SAFE ®
Brake may
also have failed.
ESP ®
will not stabilise the vehicle if it starts to ski dorifawheel
starts to spin.
Self-diagnosis is not yet complete.
The brake system continues to function normally, but without the
functions listed above .The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST is deactivated.
X Carefully drive on a suitable stretch of road, making slight steer-
ing movements, at a speed above 20 km/h.
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. !
The red indicator lamp
for the electric parking
brake flashes and/or
the yellow warning
lamp for the electric
parking brake lights up.
The electric parking brake is temporarily malfunctioning or is
defective.
X
Observe the additional display messages in the multifunction
display. 6
The red SRS warning
lamp is lit while the
engine is running.
G
Risk of injury
The restraint systems are malfunctioning. The airbags or belt ten-
sioners may either be triggered unintentionally or, in the event of
an accident, may not be triggered at all.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 230
Warning and indicator lamps in the instrument clusterOn-board computer and displays 

cloths could scratch or damage the plastic
lenses of the mirror turn signals.
X Clea nthe plastic lenses of the mirror turn
signals using a wet sponge and a mild
cleaning agent, e.g. Mercedes-Ben zcar
shampoo. Cleaning cloths may be used as
well.
Cleaning the sensors X
Clean sensors :of the driving systems
with water, car shampoo and a sof tcloth.
! If you clean the sensors with a high-pres-
sure cleaner, make sure that you keep a
distance of at least 30 cm between the
vehicle and the high-pressure cleaner noz-
zle. Information about the correct distance
is available fro mthe equipment manufac-
turer.
Cleaning the exhaust tail pipes Impurities combined with the effects of road
grit and corrosive environmental factors may
cause flash rust to form on the surface. You
can restore the original shine of the exhaust
tail pipe by cleaning it regularly, especially in
winter and after washing.
! Do not clean the exhaust tail pipes with
alkaline-based cleaning agents, such as
wheel cleaner. X
Cleant he exhaust tail pipes with a chrome
care product tested and approved by
Mercedes-Benz. Interior care
Cleaning the display X
Before cleaning the display, make sure that
it is switched off and has cooled down.
X Cleant he display surface using a commer-
cially-available microfibre cloth and TFT/
LCD display cleaner.
X Dry the display surface using a dry micro-
fibre cloth.
! For cleaning, do not use any of the fol-
lowing:
R alcohol-based thinner or petrol
R abrasive cleaning agents
R commercially-available household clean-
ing agents
These may damage the display surface. Do
not put pressure on the display surface
when cleaning. This could lead to irrepara-
ble damage to the display.
Cleaning the plastic trim G
WARNING
When cleaning the steering wheel boss and
dashboard, do not use cockpit sprays or
cleaning agents containing solvents. Cleaning
agents containing solvents cause the surface
to become porous, and as aresult plastic
parts may break away and be thrown around
the interior when an airbag is deployed, which
may result in severe injuries.
! Do not affix the following to plastic surfa-
ces:
R stickers
R films
R scented oil bottles or similar items
You could otherwise damage the plastic. Care
257Maintenance and care Z