Page 78 of 474

76 Safety and SecurityOccupant safety
BabySmart
TM1
 airbag deactivation 
system
Special BabySmart
TM compatible child 
seats, designed for use with the 
Mercedes-Benz system and available at 
any authorized Mercedes-Benz Center, are 
required for use with the BabySmart
TM air-
bag deactivation system. With the special 
child seat properly installed, the passenger 
front airbag will not deploy.The 7indicator lamp located on the 
glove box will be illuminated, except with 
the SmartKey removed or in starter switch 
position0.
Self-test BabySmart
TM
 without special 
child seat installed
After turning the SmartKey in the starter 
switch to position1 or2 or pressing the 
KEYLESS-GO* start/stop button once or 
twice, the 7 indicator lamp located on 
the glove box comes on for approximately 
six seconds and then goes out.
If the indicator lamp should not come on or 
is continuously lit, the system is not func-
tioning. You must see an authorized 
Mercedes-Benz Center before seating any 
child on the passenger seat.
Warning!
G
Children too big for child restraint systems 
should use regular seat belts. Position the 
shoulder belt across chest and shoulder, not 
face or neck. A booster seat may be neces-
sary to achieve proper belt positioning for 
children from 41 lbs until they reach a 
height where a lap/shoulder belt fits proper-
ly without a booster.
When the child restraint is not in use, re-
move it from the vehicle or secure it with the 
seat belt to prevent the child restraint from 
becoming a projectile in the event of an ac-
cident.
Do not leave children unattended in the ve-
hicle, even if the children are secured in a 
child restraint system. Unsupervised chil-
dren in a child restraint system may use ve-
hicle equipment and cause an accident 
and/or serious personal injury.
1BabySmart
TM 
 is a trademark of Siemens
Automotive Corp.
iThe system does not deactivate the 
head-thorax airbag and the emergency 
tensioning device. 
     
        
        Page 79 of 474

77 Safety and Security
Occupant safety
Warning!
G
The BabySmart
TM airbag deactivation sys-
tem will ONLY work with a special child seat 
designed to operate with it. It will not work 
with child seats which are not BabySmart
TM 
compatible.
Never place anything between seat cushion 
and child seat (e.g. pillow), since it reduces 
the effectiveness of the deactivation sys-
tem. The bottom of the child seat must 
make full contact with the passenger seat 
cushion. An incorrectly mounted child seat 
could cause injuries to the child in case of an 
accident, instead of protecting the child.
Follow the manufacturer’s instructions for 
installation of special child seats.
Warning!
G
When using a BabySmart
TM compatible 
child seat on the front passenger seat, the 
passenger front airbag will not deploy only if 
the 7 indicator lamp remains illuminat-
ed. 
Please be sure to check the indicator every 
time you use the special system child seat. 
Should the light go out while the restraint is 
installed, please check installation. If the 
light remains out, do not use the 
BabySmart
TM restraint to transport children 
on the passenger seat until the system has 
been repaired.
Warning!
G
Do not place powered-on laptops, cell 
phones and like electronic devices on the 
passenger seat. Signals from such devices 
may interfere with the BabySmart
TM system. 
Such signal interference may cause the 
7 indicator lamp not to come on during 
self-test or be continuously lit, indicating 
that the system is not functioning. 
     
        
        Page 122 of 474

120 Controls in detailMemory function
With the memory switch you can store up 
to three different settings per SmartKey or 
SmartKey with KEYLESS-GO*.
The following settings are saved for each 
stored position:
Driver’s seat and backrest position
Steering wheel position
Driver’s side exterior rear view mirror 
position
Passenger side exterior rear view mir-
ror position
These key-dependent memory settings 
can be deactivated if desired 
(
page 158).The memory switch is located on the door.
M Memory button
1, 2, 3 Stored positions
Switch on the ignition (
page 36).
or
Open the respective door.
!Prior to operating the vehicle, the driv-
er should check and adjust the seat 
height, seat position fore and aft, and 
seat backrest angle if necessary, to en-
sure adequate control, reach and com-
fort. The head restraint should also be 
adjusted for proper height. See also the 
section on airbags (
page 63) for 
proper seat positioning.
In addition, adjust the steering wheel to 
ensure adequate control, reach, opera-
tion and comfort. Both the interior and 
exterior rear view mirrors should be 
adjusted for adequate rear vision.
Fasten seat belts. Infants and small 
children should be seated in a properly 
secured restraint system that complies 
with U.S. Federal Motor Vehicle Safety 
Standard 213 and Canadian Motor Ve-
hicle Safety Standard 213.
Warning!
G
Do not activate the memory function while 
driving. Activating the memory function 
while driving could cause the driver to lose 
control of the vehicle. 
     
        
        Page 130 of 474

128 Controls in detailLightingCombination switch
The combination switch is located on the 
left of the steering column.Combination switch1High beam
2High beam flasherHigh beam
Turn the exterior lamp switch toB 
or toU (
page 123).
Push the combination switch in direc-
tion of arrow1 to switch on the high 
beam headlamps.
The high beam indicator lamp A in 
the instrument cluster comes on.
Pull the combination switch in direction 
of arrow 2 to its original position to 
switch off the high beam headlamps.
The high beam indicator lamp A in 
the instrument cluster goes out.
High beam flasher 
Pull the combination switch briefly in 
direction of arrow2.
Hazard warning flasher
The hazard warning flasher can be 
switched on at all times, even with the 
SmartKey removed from the starter switch 
or with the SmartKey with KEYLESS-GO* 
removed from the vehicle.
The hazard warning flasher switches on au-
tomatically when an airbag deploys.
The switch is located on the dashboard be-
tween the center air vents.
1Hazard warning flasher switch 
     
        
        Page 131 of 474

129 Controls in detail
Lighting
Switching on the hazard warning 
flasher
Press hazard warning flasher 
switch1.
All turn signals are flashing.
Switching off the hazard warning 
flasher
Press hazard warning flasher switch1 
again.
Interior lighting
1Left reading lamp
2Right reading lamp
3Interior lighting on/off
4Slide switch for interior lighting controlAutomatic control 
Activating
Slide switch4 to the left.
Interior lamps are switched on in dark-
ness when you 
unlock the vehicle
open a door
remove the SmartKey from the 
starter switch
open the trunk
In addition, the entry/exit lamps in the 
door trays will come on when you open 
a door.
The interior lamps are switched off af-
ter a preset time (
page 155).
iWith the hazard warning flasher acti-
vated and the combination switch set 
for either left or right turn, only the re-
spective turn signals will operate when 
the ignition is switched on.iIf the hazard warning flasher was 
switched on automatically because of 
an airbag that has deployed, press haz-
ard warning flasher switch 1 once to 
switch it off.
iIf the door remains open, the interior 
lamps switch off automatically after ap-
proximately five minutes. 
     
        
        Page 241 of 474

239 Controls in detail
Useful features
Emergency calls
An emergency call is initiated 
automatically following an accident in 
which the emergency tensioning devices 
(ETDs) or airbags deploy.
An emergency call can also be initiated 
manually by opening the cover next to the 
interior rear view mirror labeled SOS, then 
briefly pressing the button located under 
the cover. See (
page 240) for instruc-
tions on initiating an emergency call man-
ually.
Once the emergency call is in progress, the 
indicator lamp in the SOS button will begin 
to flash. The message 
Connecting call
 
appears in the multifunction display and 
the audio system is muted. When the con-
nection is established, the message 
Call connected
 appears in the multifunc-
tion display. All information relevant to the 
emergency, such as the location of the ve-
hicle (determined by the GPS satellite loca-
tion system), vehicle model, identification 
number and color are generated.A voice connection between the Response 
Center and the occupants of the vehicle 
will be established automatically soon af-
ter the emergency call has been initiated. 
The Response Center will attempt to deter-
mine more precisely the nature of the 
emergency provided they can speak to an 
occupant of the vehicle.
The Tele Aid system is available if
it has been activated and is operational
Activation requires a subscription for 
monitoring services, connection and 
cellular air time.
the relevant cellular phone network 
and GPS signals are available and pass 
the information on to the Response 
CenteriLocation of the vehicle on a map is only 
possible if the vehicle is able to receive 
signals from the GPS satellite network 
and pass the information on to the 
Response Center.
Warning!
G
If the indicator lamp in the SOS button is 
flashing continuously and there was no 
voice connection to the Response Center 
established, then the Tele Aid system could 
not initiate an emergency call (e.g. the rele-
vant cellular phone network is not available). 
The message 
Call failed
 appears in the 
multifunction display for approximately 
ten seconds.
Should this occur, assistance must be sum-
moned by other means. 
     
        
        Page 334 of 474

332 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
<
The red seat belt telltale comes 
on briefly after starting the en-
gine.
The seat belt telltale reminds you to fasten 
seat belts.
Fasten your seat belt.
The seat belt telltale goes out.
1
The red SRS indicator lamp 
comes on while driving.
There is a malfunction in the restraint sys-
tems. The airbags or emergency tensioning 
device (ETD) could deploy unexpectedly or 
fail to activate in an accident.
Drive with added caution to the near-
est authorized 
Mercedes-Benz Center.
Warning!
G
In the event that a malfunction of the SRS is 
indicated as outlined above, the SRS may 
not be operational. For your safety, we 
strongly recommend that you visit an 
authorized Mercedes-Benz Center immedi-
ately to have the system checked; otherwise 
the SRS may not be activated when needed 
in an accident, which could result in serious 
or fatal injury, or it might deploy 
unexpectedly and unnecessarily which 
could also result in an accident and/or 
injury to you or to others. 
     
        
        Page 336 of 474

334 Practical hintsWhat to do if …AIRBAG OFF indicator lampProblem
Possible cause
Suggested solution
7
The AIRBAG OFF indicator lamp 
comes on.
A BabySmart
TM1
child seat is installed on the 
front passenger seat. Therefore the passen-
ger front airbag is switched off.
The system is malfunctioning if the 
7indicator lamp comes on with no 
BabySmart
TM child seat installed on the front 
passenger seat.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon 
as possible.
7
The AIRBAG OFF indicator lamp 
does not come on with a 
BabySmart
TM child seat properly 
installed on the front passenger 
seat.
The system is malfunctioning.
Make sure there is nothing between 
seat cushion and child seat.
Check installation of the child seat.
If the indicator lamp remains out:
Have the system checked at an autho-
rized Mercedes-Benz Center as soon 
as possible.
Do not use the BabySmart
TM restraint to 
transport children on the front passenger 
seat until the system has been repaired.
1BabySmart
TM  is a trademark of Siemens Automotive Corp.