Page 57 of 304

57 Safety and Security
Occupant safety
Side impact airbags
The side impact airbags are deployed:
on the impacted side of the vehicle
in impacts exceeding a preset deploy-
ment threshold
independently of the front airbags
The side impact airbags will not deploy in 
impacts which do not exceed the system’s 
deployment threshold.
The passenger side impact airbag will only 
be deployed if the system senses that the 
passenger seat is occupied.
Seat belts
The seat belt nonusage warning lamp
<
 
in the instrument cluster lights up and a 
warning sounds for a short time when you 
turn the key in the steering lock to 
position2 and the driver’s seat belt is not 
fastened.
After starting the engine, the seat belt non-
usage warning lamp blinks for a brief peri-
od to remind the driver and passengers to 
fasten the seat belts.
The use of seat belts and infant and child 
restraint systems is required by law in 
most states and all Canadian provinces. 
Even where this is not the case, all vehicle 
occupants should have their seat belts fas-
tened whenever the vehicle is in motion.
Information on fastening seat belts is 
found in the “Getting started” section 
(
page 37).
!Do not place objects heavier than 
20 lbs (9 kg) on the passenger seat. 
This could cause the front or side im-
pact airbag on the passenger side to 
deploy in a crash which exceeds the 
system's deployment threshold.
iFor information on infants and children 
traveling with you in the vehicle and re-
straint systems for infants and chil-
dren, see “Children in the vehicle” 
(page 60). 
     
        
        Page 67 of 304

67 Safety and Security
Driving safety systems
Continuous steady brake pedal pressure 
yields the advantages provided by the ABS, 
namely braking power and ability to steer 
the vehicle.
On slippery road surfaces, the ABS will re-
spond even with light brake pressure. The 
pulsating brake pedal can be an indication 
of hazardous road conditions and func-
tions as a reminder to take extra care while 
driving.ABS control
The
-
 malfunction indicator lamp in 
the instrument cluster lights up when you 
turn the key in the steering lock to 
position2. It goes out when the engine is 
running.
More information can be found in the 
“Practical hints” section (
page 196).
iTo alert following vehicles to slippery 
road conditions you discover, operate 
your hazard warning flashers as appro-
priate.
Warning!
G
The ABS cannot prevent the natural laws of 
physics from acting on the vehicle, nor can 
it increase braking or steering efficiency be-
yond that afforded by the condition of the 
vehicle brakes and tires or the traction. The 
ABS cannot prevent accidents, including 
those resulting from excessive speed in 
turns, following another vehicle too closely, 
or hydroplaning. Only a safe, attentive, and 
skillful driver can prevent accidents. The ca-
pabilities of an ABS equipped vehicle must 
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others. 
     
        
        Page 68 of 304

68 Safety and SecurityDriving safety systemsBAS
The Brake Assist System (BAS) operates in 
emergency situations. If you apply the 
brakes very quickly, the BAS automatically 
provides full brake boost, thereby poten-
tially reducing braking distance. Apply con-
tinuous full braking pressure until the 
emergency braking situation is over. The 
ABS will prevent the wheels from locking.
When you release the brake pedal, the 
brakes function again as normal. The BAS 
is then deactivated.
The malfunction indicator lamp for the ESP 
is combined with that of the BAS.
The
¿
 malfunction indicator lamp in 
the instrument cluster lights up when you 
turn the key in the steering lock to 
position2. It goes out when the engine is 
running.
More information can be found in the 
“Practical hints” section.
ESP
The Electronic Stability Program (ESP) 
monitors the vehicle's traction (force of 
adhesive friction between the tires and the 
road surface) and handling.
The ESP recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and 
by limiting engine output, the ESP works to 
stabilize the vehicle. The ESP is especially 
useful while driving off and on wet or slip-
pery road surfaces.
The ESP warning lamp
v
 in the speed-
ometer dial flashes when the ESP is en-
gaged.
The warning lamp
v
 in the speedome-
ter dial lights up when you turn the key in 
the steering lock to position2. It goes out 
when the engine is running.
Warning!
G
The BAS cannot prevent the natural laws of 
physics from acting on the vehicle, nor can 
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes 
and tires or the traction. The BAS cannot 
prevent accidents, including those resulting 
from excessive speed in turns, following an-
other vehicle too closely, or hydroplaning. 
Only a safe, attentive, and skillful driver can 
prevent accidents. The capabilities of a BAS 
equipped vehicle must never be exploited in 
a reckless or dangerous manner which 
could jeopardize the user’s safety or the 
safety of others. 
     
        
        Page 71 of 304

71 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized 
persons from starting your vehicle.
Activating
Removing the key from the steering 
lock activates the immobilizer.
Deactivating
Inserting the key in the steering lock 
deactivates the immobilizer.
Anti-theft alarm system
Once the alarm system has been armed, a 
visual and audible alarm is triggered when 
someone opens
a door
the trunk
the hood.
The alarm system will also be triggered 
when
someone attempts to raise the vehicle.Arming the alarm system
The alarm system is armed within approxi-
mately 10 seconds after locking the vehi-
cle. The indicator lamp in the switch for the 
tow-away alarm (
page 72) will then 
blink.
Disarming the alarm system
The alarm system is disarmed when you 
unlock your vehicle with the remote con-
trol.
Canceling the alarm
To cancel the alarm:
Insert the key in the steering lock.
or
Press the
Œ
 or
‹
 button.
iIn case the engine cannot be started 
(yet the vehicle’s battery is charged), 
the system is not operational. Contact 
an authorized Mercedes-Benz Center 
or call 1-800-FOR-MERCedes (in the 
USA), or 1-800-387-0100 (in Canada).
iIf the alarm stays on for more than 
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem provided Tele Aid service was 
subscribed to and properly activated, 
and that necessary cellular service and 
GPS coverage are available. 
     
        
        Page 83 of 304

83 Controls in detail
Lighting
Lighting
For notes on how to switch on the head-
lamps and use the turn signals, see the 
“Getting started” section (
page 43).
Exterior lamp switch
The exterior lamp switch is located on the 
dashboard to the left of the steering wheel.Exterior lamp switch
M
Off
C
Parking lamps (also side marker 
lamps, tail lamps, license plate 
lamps, instrument panel lamps)
Canada only: When engine is run-
ning, the low beam is also switched 
on.
B
Low beam plus parking lamps or 
high beam headlamps (combination 
switch pushed forward).
ˆ
Standing lamps, right (turn left one 
stop)
‚
Standing lamps, left (turn left two 
stops)Daytime running lamp mode (Canada 
only)
Vehicles with automatic transmission
When the engine is running and the 
selector lever is in driving position, the low 
beam headlamps are automatically 
switched on.
When you shift from a driving position to 
positionN orP, the low beam switches off 
(2 seconds delay).
Vehicles with manual transmission
With the engine running, the low beam 
headlamps are automatically switched on.
iIf you remove the key and open the 
driver’s door while the parking lamps or 
low beam headlamps are switched on, 
then a warning sounds.
iWith the daytime running lamp mode 
activated and the engine running, the 
low beam headlamps cannot be 
switched off manually. 
     
        
        Page 88 of 304

88 Controls in detailInstrument cluster
Instrument clusterA full view illustration of the instrument 
cluster can be found in the “At a glance” 
section of this manual (
page 20).
The instrument cluster is activated when 
you
open the driver’s door
turn the key in steering lock to 
position2 (
page 29)
press the left knob3 (
page 20)
Instrument cluster illumination
Instrument lamps
To brighten illumination
Turn knob3 (
page 20) clockwise.
The instrument lamps will brighten.
To dim illumination
Turn knob3 counterclockwise.
The instrument lamps will dim.
Display illumination
Press knob3.
With key removed or in steering lock 
position0 or1 (
page 29), the display 
is illuminated for a short time.
Coolant temperature gauge
Under normal driving conditions, the cool-
ant temperature may rise to 248°F 
(120°C). The coolant temperature may 
climb to the red marking:
at high outside temperatures
during stop-and-go city traffic
when driving on hilly terrain
The engine should not be operated with 
the coolant temperature in the red zone. 
Doing so may cause serious engine dam-
age which is not covered by the 
Mercedes-Benz Limited Warranty. 
     
        
        Page 89 of 304

89 Controls in detail
Instrument cluster
Trip odometer
Press the left knob3 (
page 20) once 
with key in steering lock position2 
(
page 29) until the trip odometer is 
reset
or
Press the left knob3 (
page 20) twice 
with key removed or in steering lock 
position0 or1 (
page 29) until the 
trip odometer is reset.
Tachometer
The red marking on the tachometer 
(page 20) denotes excessive engine 
speed.
To help protect the engine, the fuel supply 
is interrupted if the engine is operated 
within the red marking.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have 
leaked into the engine compartment to 
catch fire. You could be seriously burned.
Steam from an overheated engine can cause 
serious burns and can occur just by opening 
the engine hood. Stay away from the engine 
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle 
and do not stand near the vehicle until it 
cools down.
iAvoid driving at excessive engine 
speeds, as it may result in serious en-
gine damage that is not covered by the 
Mercedes-Benz Limited Warranty. 
     
        
        Page 90 of 304

90 Controls in detailInstrument clusterOutside temperature indicator
When moving the vehicle into colder ambi-
ent temperatures (e.g. when leaving your 
garage), you will notice a delay before the 
lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate tem-
perature indications caused by heat 
radiated from the engine during idling or 
slow driving.
Setting clock
Hours
Pull out the right knob5 in the instru-
ment cluster (
page 20) and turn it 
counterclockwise.
Minutes
Pull out the right knob5 in the instru-
ment cluster and turn it clockwise.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and 
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy, 
especially in wooded areas or on bridges.
iTo adjust the time by a single hour or a 
few minutes, turn knob5 just a few de-
grees in the direction indicated for 
hours or minutes.