
#
Continue driving with care and be ready
to brake, particular lyifAc tive Dis tance
Assi stDISTRONIC warnsyo u. &
WARNING Risk of accident from acceler‐
ation or braking byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC may accel‐
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis‐
ta nce Assi stDISTRONIC.
R Ifth estored speed is called up and is
considerably faster or slo werth an the
cur rently driven speed.
R IfAc tive Dis tance Assi stDISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. #
Take into account the tra ffic situation
before calling up thestored speed. &
WARNING Risk of accident due toinsuf‐
fi cient decele ration byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC brakes
yo ur vehicle with up to50 % of the maximum
possible deceleration. If this decele ration is
not su fficient, Active Dis tance Assi st
DISTRONIC alerts you with a visual and
acoustic warning. #
Inthese cases, adjust your speed and
ke ep a suf ficient di stance. #
Brake theve hicle yourself and/or take
ev asive action. &
WARNING Risk of accident due toActive
Dis tance Assi stDISTRONIC still being
activated when you lea vethe driver's
seat
If yo u lea vethe driver's seat while theve hicle
is being braked byActive Dis tance Assi st
DISTRONIC only, theve hicle can rollaw ay. #
Alw ays deactivate Active Dis tance
Assi stDISTRONIC and secure theve hi‐
cle topreve nt it from rolling away
before you lea vethe driver's seat. Re
quirements:
R The vehicle has been star ted.
R The elect ric pa rking brake is released.
R Active Parking Assist is not being used to
park theve hicle or toexit from a parking
space.
R ESP ®
is activated, but is not inter vening.
R The transmission is in position h.
R The driver's door, front passenger door and
there ar doors are closed.
R The bonnet is closed. 208
Driving and parking

Battery disconnection periods
The AS
SYST PLUS service inter val display
can only calculate the service due da tewhen
th e bat tery is connected. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (→ page 306). Engine compartment
Ac
tive bonn et(pedestrian pr otection) Operation of
the active bonnet (pedestrian
pr otection)
In cer tain accident situations, therisk of injury
to pedestrians can be reduced bythe actuation
of the active bonn et. The rear area of the engine
bonn etisraised byappr oximately 85 mm.
Fo rth e drive tothewo rkshop, reset the trig‐
ge red active bonn etyourself. If the active bonn et
has been triggered, pedestrian pr otection may
be limited.
A qu alified specialist workshop must re-ins tate
th e full functionality of the active bonn et. The active bonnet is not
available in all coun‐
tries.
Re setting the active bonnet &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine,
th era diator and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
below: #
With your hand flat, push down active bonnet
1 inthe area around the hinges on bo th
sides (ar rows).
The engine bonnet must engage in position. #
Ifth e active bonn etcan be raised slight lyat
th ere ar in the area of the hinges, repeat the
st ep until it engages cor rectl y. Maintenance and care
307

Opening/closing
the bonnet &
WARNING Risk of accident due todriv‐
ing with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up
when theve hicle is in motion and block your
vie w. #
Never unlock the engine bonn etwhen
driving. #
Before every trip, ensure that the
engine bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the engine
bonn et
When opening or closing the engine bonn et,
it may suddenly drop into the end position.
There is a risk of injury for an yone in the
engine bonn et's range of mo vement. #
Only open or close the engine bonn et
when there are no persons in the
engine bonn et's range of mo vement. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. &
WARNING Risk of inju rydue tomoving
parts
Cer tain components in the engine compart‐
ment may continue tomo veor suddenly
mo veagain even af terth e ignition has been
switched off, e.g. the cooler fan.
Ma kesure of thefo llowing before per form ing
ta sks in the engine compartmen t: #
Switch the ignition off. #
Neverto uch the danger zone sur round‐
ing moving co mponent parts, e.g. the
ro tation area of thefa n. #
Remo vejewe llery and watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of inju ryfrom touching
co mp onent parts under voltage
The ignition sy stem and the fuel injection
sy stem workunder high voltage. If youto uch
co mp onent parts which are under voltage,
yo u could recei vean electric shoc k. #
Neverto uch co mponents of the ignition
sy stem or the fuel injection sy stem
when the ignition is switched on. &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine, 308
Maintenance and care

th
era diator and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
below: &
WARNING Risk of inju ryfrom using the
windscreen wipers while the engine bon‐
net is open
When the engine bonn etis open, and the
windscreen wipers are set in motion, you can
be trapped bythe wiper linkage. #
Alw ays switch off the windscreen wip‐
ers and ignition before opening the
engine bonn et. #
Toopen: pull lever1 torelease the engine
bonn et. #
Push bonnet catch 1upwards and lift the
bonn etby appr oximately 40 cm. #
Toclose: lowe rth e bonn etand let it fall from
a height of appr oximately 20 cm. #
Ifth e bonn etcan still be lif ted slightl y,open
th e bonn etagain and close it with a little
more forc e until it engages cor rectly. Maintenance and care
309

Display messages
Possible causes/consequences and M
MSolutions
Ð Steering malfunction
Increased physical effort
See Owner's Manual *T
he po wer assi stance forth esteering is malfunctioning. &
WARNING Risk of an accident due toaltered steering characteristics
If th e po wer assi stance of thesteering fails partially or comple tely, you will need touse more forc eto steer. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y.
&
inoperative Battery low *T
he on-board electrical sy stem voltage is too lo w.
The stationary heater has swit ched itself off. #
Drive for an extended pe riod until the battery has reached a suf ficient charge leve l again.
&
inoperative Refuel vehicle *T
here is too little fuel in the fuel tank. The stationary heater cannot be swit ched on. #
Refuel theve hicle.
Active bonnet malfunction
See Owner's Manual *T
he active bonnet (pedestrian pr otection) is malfunctioning or inoperative af ter having already been triggered. #
Consult a qualified specialist workshop. 432
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
& inoperative See Owner's
Man. *T
hestationary heater is temp orarily malfunctioning. #
When theve hicle is on a le vel sur face and the engine has cooled down, make up tofour attem ptsto switch on
th est ationary heater, waiting se veral minutes between each attem pt. #
Ifth est ationary heater does not swit chon, consult a qualified specialist workshop.
M *T
he bonnet is open. &
WARNING Risk of accident due todriving with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up when theve hicle is in motion and block your vie w. #
Never unlock the engine bonn etwhen driving. #
Before every trip, ensure that the engine bonn etis loc ked. #
Pull over and stop theve hicle safely as soon as possible. #
Close the bonn et.
C *A
t least one door is open. #
Close all doors. Displ
aymessa ges and warning/indicator lamps 433

Setting
for abroad ................................ 127
DIRECT SELECT le ver............................... 172
Engaging drive position ........................ 173
Engaging pa rkposition automatically .. 173
Engaging reve rsege ar ........................ .173
Fu nction ............................................... 172
Selecting pa rkposition ........................ 173
Shifting toneutral ................................ 173
Display Care .................................................... .319
Display (multimedia sy stem)
No tes ................................................... 264
Settings ............................................... 273
Switching off ....................................... 273
Display (on-boa rdcompu ter)
Displ ays in the multifunction display ... 255
Display content (Additional value range) ....................... 254
Displ aymessage ...................................... 381
Calling up (on-board compu ter) ........... 381
No tes ................................................... 381
Display messages ? ................................................... 41 5C
................................................... 433
M ................................................... 433
N ................................................... 434
# .................................................... 408
¯ .................................................... 405
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual .........403
Ac tive Blind Spot Assi stinope rative .... 403
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ 403
Ac tive bonnet malfunction See Own‐
er's Manual ......................................... 432
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 393
Ac tive Brake Assi stFunctions limited
See Owner's Manual ........................... 394
Ac tive Dis tance Assi stavailable
again .................................................. .404 Ac
tive Dis tance Assi stcur rently
una vailable See Owner's Manual .........404
Ac tive Dis tance Assi stinope rative ...... 404
Ac tive Lane Keeping Assist Camera
view restricted See Owner's Manual ... 402
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........401
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 401
b Active Light Sy stem inopera‐
tive ...................................................... 435
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual ......................................... 404
è Active Steering Assist cur rently
una vailable See Owner's Manual .........405
è Active Steering Assist inopera‐
tive ...................................................... 405
Ad aptive Highbeam Assist Camera
view restricted See Owner's Manual ... 438464
Index

Emer
gency spare wheel .........................3 62
No tes .................................................. 362
Re moving ............................................ 363
Energ y consum ption
Ke y ........................................................ 68
Engine ECO start/ stop function ......................1 66
Engine number ................................... .366
St arting (Digital Car Keyst icke r) .......... 161
St arting (eme rgency operation
mode) .................................................. 16 2
St arting (mobile phone) ...................... .161
St arting (Remo teOnline) ..................... 16 3
St arting (s tart/s top button) .................1 60
St arting assis tance .............................. 332
Switching off (s tart/s top button) .........1 81
Engine bonnet Function (active bonnet) ...................... 307
Opening/closing ................................. 308
Re setting (active bonnet) ..................... 307
Engine electronics Notes ................................................... 364
Engine number ........................................3 66Engine oil
................................................. .311
Ad ditives .............................................. 373
Checking the oil le vel using the oil
dipstick ................................................ 310
Checking the oil le vel using the on-
board computer ................................... 310
Filling capacity ..................................... 374
MB-F reigabe or MB-Appr oval .............. .374
Quality ................................................. 374
To pping up ...........................................3 11
Entering characters
Fu nction/no tes .................................... 271
On theto uchpad .................................. 272
Using the controller ............................. 272
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assist ................................. 19 5
Tr ailer stabilisation .............................. 19 5
ESP ®
(Electronic Stability Prog ram) ...... 19 2
Fu nction/no tes ................................... 19 2
Switching on/off ................................. 19 5
EU general operating permit number ....366 Exhaust pipes (Care)
...............................317
Exterior lighting Care .................................................... .317
Exterior lighting see Lights F
Fa tigue de tection
see ATTENTION ASSIST
Fa ult message
see Displ aymessa ge
Favo urites
Ad ding .................................................2 70
Calling up ............................................ 269
Deleting ............................................... 270
Moving ................................................ 270
Overview ............................................. 269
Re naming ............................................ 270
Fi re extinguisher ..................................... 324
Firs t-aid kit (soft sided) .......................... 323
Flacon Inse rting/ removing .............................. 15147 0
Index