Page 278 of 384

278 Practical hintsWhat to do if …?
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display
Possible cause
Possible solution
Ï
COOLANT
STOP, ENGINE OFF!
The coolant is too hot.
Stop the vehicle and turn off the en-
gine.
Only start the engine again after the
message disappears. You could oth-
erwise damage the engine.
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.
!The engine should not be operated with
the coolant temperature above 248°F
(120°C). Doing so may cause serious
engine damage which is not covered by
the Mercedes-Benz Limited Warranty.
Page 299 of 384

299 Practical hints
Unlocking/locking in an emergency
Changing batteries
If the batteries in the SmartKey or the KEY-
LESS-GO* card are discharged, the vehicle
can no longer be locked or unlocked. It is
recommended to have the batteries re-
placed at an authorized Mercedes-Benz
Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 297).
Insert the mechanical key1 in side
opening and push gray slide2.
The battery compartment is unlatched.
Pull the battery compartment out of the
key housing in direction of arrow.
Remove the batteries.
3Battery
4Contact spring
Using a lint-free cloth, insert new
batteries3 under the contact spring4
with the plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
Page 322 of 384
322 Practical hintsFuses
FusesYour vehicle’s electrical fuses are located
in various fuse boxes:
In the dashboard on the passenger side
In the rear passenger compartment un-
der the right rear seat
In the engine compartment on the driv-
er’s side
In the engine compartment on the pas-
senger side
The following implements are located in
the vehicle tool kit in the trunk
(
page 295):
The fuse chart. The amperages of the
fuses are also given there.
Spare fuses
Special fuse extractor
Fuse boxes in passenger compartment
There are two fuse boxes in the passenger
compartment. One fuse box is located in
the dashboard on the front passenger side.
An additional fuse box is located under the
right rear seat.
Fuse box in the dashboard
1Cover
iOnly install fuses that have been tested
and approved by Mercedes-Benz and
that have the specified amperage rat-
ing.
Never attempt to repair or bridge a
blown fuse. Have the cause determined
and remedied by an authorized
Mercedes-Benz Center.
Page 323 of 384
323 Practical hintsFuses
Opening
Open the passenger door.
Using the flat of your hand, press on
the middle of the cover.
The edge of cover1 lifts up slightly
from the dashboard.
Insert flat, blunt object into the edge of
the cover as a lever.
Loosen cover1 from the dashboard us-
ing lever.
Using your hands, pull cover1 in the di-
rection of the arrow and remove.Closing
Press cover1 back on.
Fuse box in the rear passenger
compartment
1CoverOpening
Pull cover1 away from fuse box
(arrow).
Remove cover rearward.
Closing
Press cover back on until it engages.
!Do not use sharp objects such as a
screw driver to open the fuse box in the
dashboard, as this could damage it.
Page 324 of 384

324 Practical hintsFusesFuse boxes in engine compartment
There are two fuse boxes located in the en-
gine compartment on both the driver’s and
front passenger side in front of the firewall
(dividing wall between engine compart-
ment and passenger compartment).
1Fuse box cover, driver’s side
2Slide1Fuse box cover, front passenger side
2Slide
Opening
Push both slides2 to the
Œ
symbol.
Remove cover1.
Closing
Replace cover1 and press it down by
hand.
Push both slides 2 to the
‹
symbol.
Emergency engine shut-down
If the engine can no longer be stopped us-
ing the SmartKey or the KEYLESS-GO*
start/stop button, the engine can be
turned off by withdrawing two fuses.
For easy removal of fuses, use the fuse ex-
tractor (supplied with vehicle tool kit) to
pull out the fuses marked on the fuse chart
as “ENGINE EMERGENCY STOP”.
The fuse chart is also located in the vehicle
tool kit (
page 295).
!The cover must fit properly and the
slide must be positioned at the
‹
symbol, as moisture or dirt may impair
the functionality of the fuses.
Page 347 of 384

347 Technical terms
ABC
(A
ctive B
ody C
ontrol)
Active, computer-controlled system
that hydraulically adjusts the suspen-
sion at all four wheels in response to
various driving situations.
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (PASSENGER
AIRBAG OFF indicator lamp in the cen-
ter console lights up). See your autho-
rized Mercedes-Benz Center for
availability.
BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger side airbag if a BabySmart
TM
compatible child seat is installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.Bi-Xenon headlamps
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Page 353 of 384

353 Index
A
ABC 190, 347
Messages in display 271
Setting vehicle level 191
ABS 23, 71, 347
ABS control 72
Malfunction indicator lamp 265
Messages in display 272
Warning lamp 265
Accelerator position, automatic
transmission 148
Accident
In case of 48
Activating
Air conditioner (cooling) 166
Air recirculation mode 163
Anti-theft alarm system 77
Central locking (control system) 139
Charcoal filter 164
Distance warning function* 188
Distronic* 184
Easy-entry/exit feature 140
ESP 75
Exterior headlamps 46
Exterior lamps 109Exterior rear view mirror parking
position 152
Front and rear fog lamp 109
Hazard warning flasher 111
Headlamps 46
High beams 111
Ignition 31
Ignition with KEYLESS-GO* start/stop
button 33
Immobilizer 51, 76
Rear window defroster 165
Residual heat 167
Seat heater 103, 104
Seat ventilation* 102
Tow-away alarm 78
Windshield wipers 47
Activating steering wheel gearshift
control 149
Downshifting 150
Upshifting 150
Adding
Coolant 243
Engine oil 241
Additional turn signals 302Adjustable air vents, rear passenger
compartment 168
Adjusting 34
Air distribution 161
Air volume 162
Backrest tilt 36
Exterior rear view mirror 38
Folding forward front seat
backrests 100
Head restraint height 36
Head restraint tilt 36
Inside rear view mirror 38
Instrument cluster illumination 114
Lumbar support 96
Mirrors 38
Multicontour seat* 99
Seat cushion depth 36, 99
Seat cushion tilt 36
Seat fore and aft adjustment 36
Seat height 36
Seat in the lumbar region 99
Seat in the shoulder region 99
Seats 34
Steering column height 38
Steering column length 38
Steering wheel 37
Page 354 of 384

354 IndexAir conditioner (cooling)
Turning off 166
Air pressure see Tire inflation
pressure 247
Air recirculation mode 163
Activating 163
Deactivating 164
Air vents, rear passenger compartment
Adjustable 168
Air volume
Adjusting 162
AIRBAG OFF indicator lamp 269
Airbags 55
BabySmart
TM deactivation
system 65, 347
Children 56
Front 59
Passenger 59
Safety guidelines 58
Side impact 59
Window curtain 59
Alarm
Audible 70, 77
Canceling 77
Visual 77Alarm system
Anti-theft 77
Anti-theft alarm system
indicator lamp 25
Alignment bolt 311
Alignment bolt (vehicle tool kit) 295, 347
Antiglare
Automatic 151
Antilock brake system (ABS) 347
Antilock Brake System see ABS 23
Anti-theft alarm system
Activating 77
Canceling alarm 77
Deactivating 77
Anti-theft systems 76
Anti-theft alarm system 77
Anti-theft alarm system indicator
lamp 25
Immobilizer 76
Tow-away alarm 78
Armrest
Storage compartment in front of 200,
201
Storage compartment in front of
armrest 200
Ashtray 206At the gas station 235
ATF (automatic transmission fluid) 242
AUDIO menu 122
Selecting radio station 122
Audio system
CD mode 123
Automatic antiglare for rear view
mirror 151
Automatic central locking
Activating/deactivating (control
system) 139
Automatic climate control 157
Air recirculation mode 163
Defrosting 162
Rear window defroster 165
Setting the temperature 160
Automatic headlamp mode 109
Automatic lighting control
Activating 112
Deactivating 112
Automatic locking when driving 94