
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways.
It is active in the range between 50 mph
(80 km/h) and 112 mph (180 km/h).
If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take a break.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentratio nby taking
the following criteria into account:
R your personal driving style, e.g. steering
characteristics
R journey details, e.g. time of day and length
of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. if the
surface is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
R if you are currently using COMAND or
making a telephone call wit hit
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display X
Activate ATTENTION ASSIST using the on-
board computer (Y page 207).
Symbol 0002appears in the multifunction
display.
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You the nhear an
intermittent warning tonet wice and the
Attention Assist: Drowsiness Detected message appears in the
multifunction display.
X If necessary, take a break.
X Press the 000Bbutton to confirm the
message.
On long journeys, take regular breaks in good
time to allow yourself to res tproperly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. The
precondition for this is that
ATTENTION ASSIST still detects typical
indicators of fatigue or increasing lapses in
concentration.
ATTENTION ASSIST is reset when you
continue yourj ourney and starts assessing
your tiredness again if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break. Lane Tracking package
General notes The Lane Tracking package consists of Blind
Spot Assist (Y
page 186) and Lane Keeping
Assist (Y page 188).
Blind Spot Assist General notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from speeds of
approximately 20 mph (30 km/h). A warning 186
Driving systemsDriving and parking

X
Press the 0004or0003 button to select the
Easy Entry/Exit function.
If the Easy Entry/Exit function is
activated, the vehicle steering wheel is
displayed in red in the multifunction
display.
X Press the 000Bbutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Y page 102).
Switching the belt adjustment on/off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Belt Adjustment function.
When the Belt Adjustment function is
activated, the vehicle seat belt is displayed
in red in the multifunction display.
X Press the 000Bbutton to save the setting.
For further information on belt adjustment,
see (Y page 56).
Switching the fold-in mirrors when
locking feature on/off
This function is only available on vehicles with
the memory function (Y page 106).
This function is only available in Canada.
When you activate the Auto. MirrorFolding function, the exterior mirrors are
folded in when the vehicle is locked. If you
unlock the vehicle and then open a door, the
exterior mirrors fold out again.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Auto. Mirror Folding function.
If the Auto. Mirror Folding function is
activated, the vehicle's exterior mirror is displayed in red in the multifunction
display.
X Press the 000Bbutton to save the setting.
If you have switched the Auto. Mirror Folding function on and you fold the exterior
mirrors in using the button on the door
(Y page 104), they will not fold out
automatically. The exterior mirrors can then
only be folded out using the button on the
door.
Restoring the factory settings X
Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Factory Setting submenu.
X Press 000Bto confirm.
The Reset All Settings? message
appears.
X Press the 0004or0003 button to select
No or
Yes .
X Press the 000Bbutton to confirm the
selection.
If you have selected Yes , the multifunction
display shows a confirmation message.
For safety reasons, the Day Lights function
in the Lights submenu is only reset if the
vehicle is stationary. AMG menu in AMG vehicles
AMG displays X
Press 0002or0005 on the steering wheel
to select the AMG menu.
0002
Digital speedometer
0003 Gear indicator 212
Menus and submenusOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0009 The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull ove rand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Ope nthe hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. 0012
Check Engine Oil
At Next Refueling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refueling, at the latest
(Y page 285).
X If necessary, add engine oil (Y page 285).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. Display messages
229On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
While the HOLD function or DISTRONIC PLU
Sis active, you have:
R opened the driver's door and released the seat belt or
R switched off the engine or
R opened the hood
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 Shift the transmission to position P.
You can restart the engine. 000E The trunk lid is open.
X
Close the trunk lid. 000D The hood is open.
G WARNING
The open hood may block your view when the vehicle is in motion.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Close the hood. 0003 At least one door is open.
X
Close all the doors. 0006
Rear
Left Backrest
Not Latched or
Rear Right Backrest Not
Latched The backrest in the rear is not engaged on the left-hand and/or
right-hand side.
X
Push the backrest back until it engages. Display messages
239On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
0002
Remove 'Start'
Button and Insert
Key The KEYLESS-GO key can continuously not be detected.
KEYLESS-GO is temporarily malfunctioning or is defective. A
warning tone also sounds.
X
Insert the SmartKey into the ignition lock and turn it to the
desired position.
X Visit a qualified specialist workshop. 0002
Close Doors to
Lock Vehicle At leas
tone door is open. Awarning tone also sounds.
X Close all doors and loc kthe vehicle again. Warning and indicator lamps in the instrument cluster
Seat belts
Problem Possible causes/consequences and
0001 Solutions
0012
After starting the
engine, the red seat
belt warning lamp lights
up for
6seconds. The seat belt warning lamp reminds the driver and fron
tpassenger
to fasten their seat belts.
X Faste nyour seat belt (Y page 56). 0012
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tone sounds
for up to six seconds.
The driver's seat belt is not fastened.
X
Fasten your seat belt (Y page 56).
The warning tone ceases. 0012
The red seat belt
warning lamp lights up
after the engine starts,
as soon as the driver's
or the front-passenger
door is closed. The driver or front passenger has not fastened their seat belt.
X
Fasten your seat belt (Y page 56).
The warning lamp goes out. There are objects on the front-passenger seat.
X
Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. 242
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Problem Possible causes/consequences and
0001 Solutions
0012
The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds. The driver or front passenger has not fastened their seat belt. The
car is being driven faster than 15 mph (25 km/h) or has briefly
been driven faster than 15 mph (25 km/h).
X
Fasten your seat belt (Y page 56).
The warning lamp goes out and the intermittentw arning tone
ceases. There are objects on the front-passenger seat
.The car is being
driven faster than 15 mph (25 km/h) or has briefly been driven
faster than 15 mph (25 km/h).
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases. Warning and indicator lamps in the instrument cluster
243On-board computer and displays Z

is a universal interface for portable audio
equipment, e.g. for an iPod
®
or MP3 player
(see the separate Audio or COMAND
Operating Instructions).
Stowage compartment under the front
seats G
WARNING
If you exceed the maximum load for the
stowage compartment, the cover may not be
able to restrain the items. Items may be
thrown out of the stowage compartment and
hit vehicle occupants. There is a risk of injury,
particularly in the even tofsudden braking or
a sudde nchange in direction.
Never exceed the maximum permissible load
for the stowage compartment. Stow and
secure heavy objects in the trunk.
The maximum permissible load of the
stowage compartment is 3.3 lbs (1.5 kg). X
To open: pull handle 0002up and fold
cover 0003forwards.
Stowage space in the rear Stowage compartment in the rear
!
Do not sit or lean your bodyweight on the
armrests when they are folded out as you
could damage them.
! Close the cover of the stowage
compartmentb efore folding the rear seat
armrest back into the seat backrest. X
To open: fold down seat armrest 0003.
X Fold cover 0002of the armrest upwards. Stowage net
Stowage nets are located in the front-
passenger footwell and on the left-hand side
of the trunk.
Observe the loading guidelines (Y page 256)
and the safety notes regarding stowage
spaces (Y page 256). Rear bench seat through-loading
feature
Important safety notes G
WARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold
forwards, e.g. when braking suddenly or in the
event of an accident.
R The vehicle occupan twould thereby be
pushed into the seat belt by the rear bench
seat/rear seat or by the seat backrest .The
seat belt can no longer offer the intended
level of protection and could even cause
injuries.
R Objects or loads in the trunk cannot be
restrained by the seat backrest.
There is an increased risk of injury.
Before every trip, make sure that the seat
backrests and the rear bench seat/rear seat
are engaged. 258
Stowage areasStowage and features

Observe the loading guidelines (Y
page 256).
The left-hand and right-hand rear seat
backrests can be folded down separately to
increase the trunk capacity.
Folding the seat backrest forward X
Move the driver's or front-passenger seat
forward if necessary.
X Open the trunk.
X Pull right-hand or left-hand rear seat
backrest release handle 0002.
The corresponding rear seat backrest is
released.
X Fully insert the rear seat backrest head
restraints. X
Fold rear seat backrest 0003forwards.
X Move the driver's or front-passenger seat
back if necessary. Folding the seat backrest back
X
Move the driver's or front-passenger seat
forward if necessary.
! Make sure that the seat belt does not
become trapped when folding the rear seat
backrest back. Otherwise, it could be
damaged.
X Fold rear seat backrest 0002back until it
engages.
If the rear seat backrest is not engaged and
locked, this will be shown in the
multifunction display in the instrument
cluster. Awarning tone also sounds.
i You should always engage the rear seat
backrests if you do no tneed the through-
loading feature. This will prevent
unauthorized access to the trunk from the
vehicle interior.
X Adjust the head restraints if necessary
(Y page 98).
X Move the driver's or front-passenger seat
back if necessary. Securing cargo
Cargo tie-down rings Observe the following notes on securing
loads:
R
Observe the loading guidelines
(Y page 256).
R Secure the load using the cargo tie-down
rings. Stowage areas
259Stowage and features Z