
Assistance menu (on-board
computer)
.......................................... 246
ASSYST PLUS Displaying a service message ........341
Hiding a service message ..............341
Notes ............................................. 340
Resetting the service interval
displa y........................................... 341
Service message ............................ 340
Special service requirements ......... 341
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................78
Function .......................................... .78
Switching off the alarm ....................78
ATTENTION ASSIST
Activating/deactivating .................248
Display message ............................ 273
Function/notes ............................. 225
Audio system
see separate operating instructions
Authorized Centers
see Qualified specialist workshop
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshops
see Qualified specialist workshop
AUTO lights
Display message ............................ 269
see Lights
Automatic engine start (ECO start/
stop function) .................................... 164
Automatic engine switch-off (ECO
start/stop function) ..........................163
Automatic headlamp mode ..............129
Automatic transmission Automatic drive program ...............172
Changing gea r............................... 170
DIRECT SELECT lever .....................168
Display message ............................ 282
Drive program displa y.................... 168
Driving tips .................................... 170
Emergency running mode ..............175
Engaging drive position .................. 170
Engaging neutral ............................ 169
Engaging park position (AMG
vehicles) ........................................ 169
Engaging reverse gear ...................169
Engaging the park position ............168 Kickdown
....................................... 171
Manual drive program ....................172
Manual drive program (AMG
vehicles) ........................................ 173
Overview ........................................ 167
Problem (malfunction) ...................175
Program selector button ................171
Pulling away ................................... 162
Selector lever ................................ 167
Starting the engine ........................161
Steering wheel paddle shifters ......172
Transmission position displa y........ 167
Transmission position display
(DIRECT SELECT lever) ................... 168
Transmission positions ..................170
Automatic transmission
emergency mode ............................... 175 B
Bag hook ............................................ 306
BAS (Brake Assist System) .................68
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/notes ................................ 68
BAS PLUS Q (Brake Assist System
PLUS) with Cross-Traffic Assist
Important safety notes ....................69
Battery (SmartKey)
Checking .......................................... 85
Important safety notes ....................85
Replacing ......................................... 85
Battery (vehicle)
Charging ........................................ 360
Display message ............................ 271
Important safety notes ..................358
Jump starting ................................. 362
Belt force limiter
Activation ......................................... 59
Function .......................................... .59
Blind Spot Assist
Activating/deactivating .................248
Display message ............................ 276
Notes/function .............................. 226
see Active Blind Spot Assist
BlueTEC
Adding DEF .................................... 180
BlueTEC (DEF) .................................... 421 Index
5ProCarManuals.com

ECO display
Function/notes ............................. 185
On-board computer .......................242
ECO start/stop function
Automatic engine start ..................164
Automatic engine switch-off ..........163
Deactivating/activating .................164
General information .......................163
Important safety notes ..................163
Introduction ................................... 163
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency release
Driver's door .................................... 90
Fuel filler fla p................................. 177
Trunk ............................................... 97
Vehicle ............................................. 90
Emergency spare wheel
Important safety notes ..................410
Points to remember .......................410
Removing ....................................... 411
Storage location ............................ 411
Stowing .......................................... 412
Technical data ............................... 414
Emergency Tensioning Devices
Function .......................................... .59
Safety guideline s............................. 41
Emergency unlocking
Tailgate ............................................ 97
Emissions control
Service and warranty information ....23
Engine
Check Engine warning lamp ........... 292
Display message ............................ 269
ECO start/stop function ................163
Engine number ............................... 417
Irregular running ............................ 166
Jump-starting ................................. 362
Starting problems ..........................166
Starting the engine with the
SmartKey ....................................... 161
Starting with KEYLESS-GO .............161
Switching off .................................. 182
Tow-starting (vehicle) ..................... 367
Engine electronics
Problem (malfunction) ...................166Engine oil
Adding ........................................... 338
Additives ........................................ 422
Checking the oil level ..................... 337
Checking the oil level using the
dipstick .......................................... 338
Display message ............................ 271
Filling capacity ............................... 422
Notes about oil grades ................... 422
Notes on oil level/consumption ....337
Temperature (on-board computer) .253
Viscosity ........................................ 423
ESP ®
(Electronic Stability
Program) AMG menu (on-board computer) ...254
Deactivating/activating (AMG
vehicles) .......................................... 74
Deactivating/activating (except
AMG vehicles) ................................ 247
Deactivating/activating (notes;
except AMG vehicles) ......................73
Display message ............................ 258
ETS/4ETS ........................................ 72
Function/notes ................................ 72
General notes .................................. 72
Important safety information ...........72
Warning lamp ................................. 289
ETS/4ETS (Electronic Traction
System) ................................................ 72
Exhaust check ................................... 184
Exhaust pipe (cleaning instructions) 347
Exterior lighting Setting options .............................. 128
see Lights
Exterior mirrors
Adjusting ....................................... 122
Dipping (automatic) .......................124
Folding in/out (automatically). ......123
Folding in/out (electrically). ..........123
Folding in when locking (on-board
computer) ...................................... 252
Out of position (troubleshooting) ...124
Setting ........................................... 123
Storing settings (memory function) 125
Storing the parking position ..........124
Eyeglasses compartment .................29910
IndexProCarManuals.com

Important safety notes
..................336
Opening ......................................... 336
Hydroplaning ..................................... 188I
Ignition lock see Key positions
Immobilizer .......................................... 78
Indicator lamps see Warning and indicator lamps
Insect protection on the radiator ....337
Instrument cluster Overview .......................................... 31
Settings ......................................... 249
Warning and indicator lamps ...........32
Instrument cluster lighting ..............250
Interior lighting ................................. 135
Automatic control ..........................136
Delayed switch-off (on-board
computer) ...................................... 251
Emergency lighting ........................136
Manual control ............................... 136
Overview ........................................ 135
Reading lamp ................................. 135
Setting the brightness of the
ambient lighting (on-board
computer) ...................................... 250
Setting the brightness of the
display/switch (on-board
computer) ...................................... 250
Setting the color of the ambient
lighting (on-board computer) .........250 J
Jack Storage location ............................ 352
Using ............................................. 397
Jump starting (engine) ......................362 K
KEYLESS-GO Convenience closing feature .......... 100
Display message ............................ 284
Locking ............................................ 83
Start/Stop button .......................... 159 Starting the engine
........................161
Unlocking ......................................... 83
Key positions
KEYLESS-GO .................................. 159
SmartKey ....................................... 159
Kickdown
Driving tips .................................... 171
Manual drive program ....................174
Knee bag .............................................. 45 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating .................248
Display message ............................ 275
Function/informatio n.................... 228
Lane Tracking package .....................226
Lap time (RACETIMER) ......................254
LATCH-type (ISOFIX) child seat
anchors ................................................ 63
License plate lamp (display
message) ............................................ 267
Light function, active Display message ............................ 268
Lighting
Light switch ................................... 128
Lights
Activating/deactivating the
interior lighting delayed switch-off .251
Active light function .......................133
Automatic headlamp mode ............129
Cornering light function .................133
Driving abroad ............................... 128
Hazard warning lamps ...................132
High beam flasher .......................... 132
High-beam headlamps ...................132
Low-beam headlamps ....................130
Parking lamps ................................ 130
Rear fog lamp ................................ 130
Setting the brightness of the
ambient lighting (on-board
computer) ...................................... 250
Setting the brightness of the
display/switch (on-board
computer) ...................................... 25012
IndexProCarManuals.com

Problem Possible causes/consequences and
M
MSolutions You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 360).
or
X Jump-start the vehicle (Y page 362).
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. The vehicle is locked.
X
Unlock the vehicle and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock. Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the vehicle. Always keep the SmartKey out of
reach of children.
G
WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
Ideally, place luggage or loads in the trunk/
cargo compartment. Observe the loading
guidelines (Y page 298). Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. If the vehicle has
been locked with the SmartKey or with
KEYLESS-GO, opening a door from the inside 88
DoorsOpening and closing
ProCarManuals.com

Problems with the engine
Problem Possible causes/consequences and
M
MSolutions The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrument cluster go
out.
X Try to start the engine again (Y page 161). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 362).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. Vehicles with a
gasoline engine:
The engine is not
running smoothly and
is misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it. The coolant
temperature gauge
shows a value above
248 ‡ (120 †). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 339). Observe the warning
notes as you do so and add coolant if necessary. 166
DrivingDriving and parking
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Useful information
............................352
Where will I find...? ...........................352
Flat tire .............................................. 354
Battery (vehicle) ................................ 358
Jump-starting .................................... 362
Towing and tow-starting ..................364
Fuses .................................................. 367 351Breakdown assistance
ProCarManuals.com

X
Pull the tire sealant bottle out of the tire
inflation compressor.
The filler hose remains attached to the tire
sealant bottle.
X Stow the tire sealant bottle and the tire
inflation compressor.
X Drive to the nearest qualified specialist
workshop and have the tire changed there.
X Have the tire sealant bottle replaced as
soon as possible at a qualified specialist
workshop.
X Have the tire sealant bottle replaced every
four years at a qualified specialist
workshop. Battery (vehicle)
Important safety notes
Special tools and expert knowledge are
required when working on the battery, e.g.
removal and installing. You should therefore
have all work involving the battery carried out
at a qualified specialist workshop. G
WARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can
lead to function restrictions applying to
safety-relevant systems, e.g. the lighting
system, ABS (anti-lock braking system) or
ESP ®
(Electronic Stability Program). The
operating safety of your vehicle may be
restricted. You could lose control of the
vehicle, for example:
R braking
R in the event of abrupt steering maneuver
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar
incident, contact a qualified specialist
workshop immediately. Do not drive any
further. You should have all work involving the battery carried out at a qualified specialist
workshop.
For further information about ABS and ESP ®
,
see (Y page 67) and (Y page 72). G
WARNING
Electrostatic build-up can lead to the creation
of sparks, which could ignite the highly
explosive gases of a battery. There is a risk of
an explosion.
Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. A build-
up of electrostatic charge can be caused, for
example:
R by wearing clothing made from synthetic
fibers
R due to friction between clothing and seats
R if you push or pull the battery across the
carpet or other synthetic materials
R if you wipe the battery with a cloth G
WARNING
During the charging process, a battery
produces hydrogen gas. If a short circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objects or tools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected. 358
Battery (vehicle)Breakdown assistance
ProCarManuals.com

vehicle literature. You could otherwise fail to
recognize dangers e.g. due to high voltage.
For safety reasons, Mercedes-Benz
recommends that you only use batteries
which have been tested and approved for
your vehicle by Mercedes-Benz. These
batteries provide increased impact
protection to prevent vehicle occupants from
suffering acid burns should the battery be
damaged in the event of an accident.
In order for the battery to achieve the
maximum possible service life, it must always
be sufficiently charged.
The vehicle battery, like other batteries, can
discharge over time if you do not use the
vehicle. In this case, have the battery
disconnected at a qualified specialist
workshop. You can also charge the battery
with a charger recommended by Mercedes-
Benz. Contact a qualified specialist workshop
for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified
specialist workshop if you wish to leave your
vehicle parked for a long period of time.
i Remove the SmartKey if you park the
vehicle and do not require any electrical
consumers. The vehicle will then use very
little energy, thus conserving battery
power.
i If the power supply has been interrupted,
e.g. if you reconnect the battery, you will
have to:
R set the clock. Information on setting the
clock can be found in the separate
operating instructions.
On vehicles with COMAND and a
navigation system, the clock is set
automatically.
R reset the function for folding the exterior
mirrors in/out automatically, by folding
the mirrors out once (Y page 123). Charging the battery
G
WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a
risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery. G
WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash battery acid immediately with
water and seek medical attention. G
WARNING
A discharged battery can freeze at
temperatures below freezing point. When
jump-starting the vehicle or charging the
battery, gases can escape from the battery.
There is a risk of an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a
maximum charging voltage of 14.8 V.
! Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment (Y page 362).
X Open the hood.
X Connect the battery charger to the positive
terminal and ground point in the same
order as when connecting the donor
battery in the jump-starting procedure
(Y page 362).
If, at low temperatures, the indicator lamps/
warning lamps in the instrument cluster do
not light up, it is highly likely that the
discharged battery has frozen. In this case,
you may neither charge the battery nor jump- 360
Battery (vehicle)Breakdown assistance
ProCarManuals.com