Calling up
the DEF le velga uge
On-board computer:
4 Service #
Select DEFand confirm.
The DEF le vel and the DEF range appear. Instrument Display wi
thcolor display
1 DEF le vel Instrument Display with black
and white dis‐
play
1 DEF le vel
Re filling DEF
* NO
TEEngine damage due toDEF being
in the fuel #
DEF must not be used tofill th e fuel
ta nk. #
Only use DEF tofill th e DEF tank. #
Do not overfill the DEF tank. *
NO
TEContamination of theve hicle inte‐
ri or due toDEF leakage #
After adding, careful lyclose the DEF
re fill con tainer. #
Avoid car rying DEF refill con tainers per‐
manently in theve hicle. Re
quirements:
R The ignition is switched off.
The following messages that appear in succes‐
sion in the multifunction display indicate that you
need torefill th e DEF tank:
R Refill Additive See Operator's Manual
The DEF tank has fallen below thefirs twa rn‐
ing thre shold.
R Refill Additive Starts until Emerg. Op.: XXX
See Operator's Manual
The DEF supply has fallen below there ser ve
mar k.
Af terth e message appears forth efirs t time,
th ere maining DEF supp lywill last for appro x‐
ima tely 1,200 mi (1,900 km) and you can
st art the engine a fur ther 16 times. The num‐
ber of remaining engine starts XX(16 to1) is
shown in the message everytime the engine
is star ted.
R Refill Additive Emergency Op.: XXX mph See
Operator's Manual
You can only drive theve hicle at a maximum
speed of 5 mph (8 km/h).
Re fill qu antity:
Wi th a prom ptinthe displa ya t least 2 l
Wi thout a prom ptinthe displa yat least 8 l Yo
u can also ha vethe DEF le vel displa yed
( / page 137).
Opening the DEF filler cap on filler caps that
are not loc kable #
Open the hood. Driving and parking
137
Re
filling DEF Va
riant 1 Va
riant 2 #
Screw disposable hose 2onto thefiller neck
of theve hicle until hand-tight. #
Lift up and tip DEF refill canis ter1.
The filling process stops when the DEF tank is
comple tely full.
DEF refill canis ter1 can be remo ved when it
has been only partially em ptied. #
Unscr ewdisposable hose 2and close DEF
and refill canis ter1 inreve rse order. #
Switch on the ignition for at least 60 seconds. #
Start theve hicle.
% Av
oid storing DEF containers permanent lyin
th eve hicle.
DEF refill bottle
Only scr ewthe DEF refill bottle hand-tight onto
th efiller opening in the engine compartment. It
may otherwise be damaged. DEF
refill bottles 1can be obtained at many gas
st ations or at a qualified specialist workshop.
Re fill bottles without a thre aded cap of fer no
ove rfill pr otection. DEF may leak out as a result
of ove rfilling. Mercedes-Benz of fers special refill
bottles with a thre aded cap. You can obtain this
from an authorized Mercedes-Benz Center. #
Unscr ewthe pr otective cap from DEF refill
bottle 1. #
Place DEF refill bottle 1as shown on filler
opening 2and scr ewit on clockwise until
hand-tight. #
Press DEF refill bottle 1towa rdsfiller open‐
ing 2.
The DEF tank is filled. This could take up to
one minute.
% When
the DEF refill bottle is no longer
pressed down, filling stops. The bottle can be
re mo ved when it has been only partially emp‐
tied. #
Let go of DEF refill bottle 1. Driving and parking
13 9
Gene
rally, you may only apply the parking brake
when theve hicle is stationar y. #
Toapply the pa rking brake: pull handbrake
le ve r1 up as far as the last possible de tent.
When the engine is running, the0049
and 0024 (USA) or 0024(Canada) indicator
lamps in the Instrument Display light up. If
th eve hicle is in motion, a warning tone
sounds.
% In
vehicles with a folding handbrake le ver,
yo u can then press handbrake le ver1 down
as far as it will go. #
Torelease the pa rking brake: onvehicles
with a folding handbrake le ver,firs t pull hand‐
brake le ver1 up as far as it will go. #
Guide handbrake le ver1 down toas far as it
will go.
The 0049 and0024 (USA) or 0024(Canada)
indica tor lamps in the instrument display go
out.
Fo lding the handbrake le ver up or down (only
in vehicles with a folding handbrake le ver)
Re quirements:
R The handbrake le ver is applied. #
Tofold down the handbrake le ver:push the
handbrake le ver down as far as it will go. #
Toraise the handbrake le ver:pull the hand‐
brake le ver up as far as it will go. Pe
rforming emer gency braking with the hand‐
brake le ver If, in
exceptional cases, the service brake fails,
yo u may use the parking brake toper form emer‐
ge ncy braking. #
Eme rgency braking: press and hold release
button 2and carefully pull brake le ver1. Electric parking brake
Information on
the electric pa rking brake &
WARNING Risk of accident and injury
due tochildren left unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could:
R Open doo rs,th ereby endangering other
persons or road users.
R Get out and be stru ck byoncoming traf‐
fi c.
R Ope rate ve hicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion, forex ample by:
R Releasing the parking brake.
R Changing the transmission position.
R Starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of reach of
ch ildren. 14 2
Driving and pa rking
Fo
rth e automatic functions towo rkcor rectl y,the
driver must be seated in the cor rect seat position
(/ page 64).
The function of the electric parking brake is
dependent on the on-board electrical sy stem volt‐
age. If the on-board electrical sy stem voltage is
low or there is a malfunction in the sy stem, it
may not be possible toapply the electric parking
brake and theye llow 0024 indicator lamp lights
up.
In this case, park theve hicle in thefo llowing way:
R Park theve hicle on le velground and secure it
to prev ent it from rolling away.
R Ve
hicles with automatic transmission:
shift the transmission toposition 005D.
% The electric parking brake is only actually
applied when there d0049 and0024 (USA)
or 0024 (Canada) indicator lamps light up
continuousl y.
It may not be possible torelease a parking brake
if th e on-board electrical sy stem voltage is low or
if th ere is a malfunction in the sy stem. Inform a
qu alified specialist workshop.
When the engine is switched off, the electric
parking brake car ries out a function test at regu‐
lar inter vals. Noises are normal in this process.
Au tomatically applying the electric parking
brake
Ve hicles with automatic transmission:
The electric parking brake is auto matically
applied when the transmission is in position 005D.
In addition, at least one of thefo llowing condi‐
tions must be fulfilled:
R The engine is switched off
R The driver is not sitting in the driver's seat
R The belt buckle is undone To
prev ent the electric parking brake from apply‐
ing automaticall y,pull switch 1.
The electric parking brake is also automatically
applied if Active Dis tance Assi stDISTRONIC has
brought theve hicle toast andstill.
In addition, at least one of thefo llowing condi‐
tions must be fulfilled:
R The engine is switched off
R The driver is not sitting in the driver's seat
R The belt buckle is undone
R There is a sy stem malfunction
R The po wer supp lyis insuf ficient
R The vehicle is stationary for a long time
The red0049 and0024 (USA) or 0024(Canada)
indicator lamp in the instrument display lights up.
The electric parking brake is only actually applied
when there d0049 and0024 (USA) or 0024
(Canada) indicator lamps light up continuousl y.
Re leasing the electric pa rking brake automat‐
ically
Ve hicles with automatic transmission:
The electric parking brake of your vehicle is
re leased when all of thefo llowing conditions are
fulfilled:
R The driver is sitting in the driver's seat.
R The driver is belted.
R The engine is running.
R The transmission is in position 005Bor005E and
yo u depress the accelera tor.
or
Yo u swit chfrom transmission position 005Dto
position 005Bor005E. You must also depress the Driving and pa
rking 14 3
accelerator if tra
veling on steep uphill gradi‐
ents.
R Ifth e transmission is in position 005E,there ar-
end doors must be closed.
App lying/releasing the electric pa rking brake
manually &
WARNING Risk of accident and inju ry
due tochildren and animals left unat ten‐
ded in theve hicle
If yo u lea vechildren and animals unat tended
in theve hicle, they may be able toset the
ve hicle in motion, forex ample by:
R Releasing the parking brake.
R Shifting the automatic transmission out of
park position 005D.
R Starting the engine.
In addition, they may operate vehicle equip‐
ment and become trapped. #
Never lea vechildren and animals unat‐
te nded in theve hicle. #
When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle. #
Toappl y:press switch 1.
When the electric parking brake is applied,
th ere d0049 and0024 (USA) or 0024(Can‐
ada) indicator lamps light up in the instru‐
ment displa y.The electric parking brake is
only actually applied when there d0049
and 0024 (USA) or 0024(Canada) indicator
lamps light up continuousl y.
It is also possible toapply the electric parking
brake when the ignition is switched off. #
Torelease: pull switch 1.
The red0049 and0024 (USA) or 0024(Can‐
ada) indicator lamps in the instrument display
go out.
Yo u may on lyrelease the electric parking
brake if the ignition is switched on with the
st art/ stop button.
Emer gency braking In
theeve nt of an emergency, you can brake the
ve hicle while it is in motion with the electric park‐
ing brake. #
While driving, press switch 1ofthe electric
parking brake.
The vehicle is braked as long as youke ep
switch 1ofthe electric parking brake
depressed.
The longer electric parking brake switch 1is
depressed, the greater the braking forc e.
During the braking procedure, you will receive the
fo llowing feedback from theve hicle:
R awa rning tone sounds
R the "Release parking brake" display message
appears
R there d0049 and0024 (USA) or 0024(Can‐
ada) indicator lamps in the instrument display
fl ash
When theve hicle has been braked toast andstill,
th e electric parking brake is applied. Pa
rking theve hicle for an extended period Pa
rking theve hicle for longer than 4 weeks #
Method 1: connect thest ar ter battery to a
trickle charge r via the jump-s tart connection. 14 4
Driving and pa rking
#
Method 2: interrupt the po wer supply byacti‐
va ting standby mode (/ page145). #
Method 3: disconnect all batteries. In this
case, please con tact a qualified specialist
wo rkshop.
% Charge
thest ar ter battery every 6 months,
eve n if it has been disconnected or in
st andby mode.
The charge leve l of thest ar ter battery must be
ch eckedeve ryfour we eks if no measures are
ta ke nto maintain the battery charge. #
Voltage of thest ar ter battery below
12 .2 V: charge thest ar ter battery topreve nt
deep discha rge damage.
% Yo
u can obtain fur ther information at a quali‐
fi ed specialist workshop. St
andby mode Ac
tivating/deactivating standby mode
Re quirements:
R The engine is switched off.
When you activate standby mode, the energy loss
is minimized if theve hicle is par kedfo r an exten‐
ded pe riod.
St andby mode has thefo llowing characteristics:
R The star ter battery is pr otected.
R The maximum non-operational time is shown
inthe media displa y.
R The connection toonline services is inter rup‐
te d.
R The ATA (anti-theft alarm sy stem) is not avail‐
able.
R The interior motion sensor and tow- aw ay
alarm functions are not available.
If th efo llowing conditions are met, standby mode
can be activated or deactivated using the multi‐
media sy stem:
R The engine is switched off.
R The ignition is switched on.
If th e displa yed non-operational time of theve hi‐
cle is exceeded, there could be a loss of comfort
and thest ar ter battery can no longer be guara n‐
te ed toreliably start the engine. The
star ter battery must firs t be charge d in the
fo llowing situations:
R The non-operational time of theve hicle is to
be extended.
R The messa gethat the battery charge is not
suf ficient forst andby mode appears in the
media displa y.
% St
andby mode is automatically deactivated
when the ignition is switched on.
On-board computer: 4 Settings 5
Vehicle
5 Ruhezustand (Stan dby) #
Toactivate/deactivate: selectYesorNo.
% If
th e options are gr ayed out, then the battery
ch arge is not suf ficient forst andby mode. Driving and driving saf
ety sy stems Note
on driving sy stems and your responsibil‐
ity Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and maneu‐
ve ring theve hicle. The driving sy stems are aids
and do not relie ve you of your responsibility.
Alw ays pay attention tothe tra ffic and inter vene
if necessa ry. Be aware of the limitations rega rd‐
ing the safe use of these sy stems. Information about sensors
Cer
tain driving and driving saf ety sy stems use
sensors 1tomonitor the area in front of, behind
or next totheve hicle (depending on theve hicle's
equipment). Driving and parking
14 5
Depending on
theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind thera diator grill. Keep these parts
free of dirt, ice and slush (/ page 288). The sen‐
sors must not be co vered, forex ample bybicycle
ra ck s, overhanging loads or sticke rs. Af ter a colli‐
sion, ha vethe function of thera dar sensors
ch ecked at a qualified specialist workshop as
damage (bo thvisible or non-visible) may ha ve
occur redto the bumper or radiator trim. Fu
nction of driving sy stems and driving
saf ety sy stems In
this section, you will find information about the
fo llowing driving sy stems and driving saf ety sys‐
te ms:
R ABS ( Anti-lock braking system)
(/ page 146)
R ASR (acceleration skid control) (/ page 147)
R BAS (Brak eAssist System) (/ page146)
R ESP ®
(Electronic Stability Program)
(/ page 147)
R EBD ( Electronic Brakeforc eDistribution)
(/ page 148)
R Active Brake Assi st (/ page 149)
R Cruise co ntrol (/ page 151)
R Active Dis tance Assi stDISTRONIC
(/ page 152)
R Hill start assist (/ page155)
R HOLD fu nction (/ page 155)
R Parking Assist PARKTRONIC (/ page156)
R Rear view camera (/ page157)
R Surround view camera (/ page159)
R ATTENTION ASSIST (/ page162)
R Traf fic Sign Assi st (/ page 163)
R Blind Sp otAssi st (/ page 164)
R Active Lane Keeping Assist (/ page167) Fu
nctions of ABS (Anti-lock Braking Sy stem) Obser
vethe impor tant sa fety guidelines forthe
driving saf ety sy stem. ABS cont
rols the brake pressure in critical situa‐
tions:
R The wheels are pr evented from lo cking when
braking, e.g. during maximum full-s top brak‐
ing or when there is insuf ficient tire traction
R The steerability of theve hicle in term s of
ph ysical possibilities is ensured when braking
R ABS is active from speeds of appr ox. 3 mph
(5 km/h). On a slippery road sur face, ABS
inter venes even if you on lybrake gently.
Sy stem limits
If th ere is a malfunction and theye llow 0025 ABS
wa rning lamp lights up continuously in the instru‐
ment display af terst arting the engine, ABS may
be impaired or inoperative.
If ABS inter venes, you will feel a pulsing in the
brake pedal. The pulsating brake pedal may be an
indication of hazardous road conditions and func‐
tions as a reminder totake extra care while driv‐
ing.
If ABS in terv enes: keep the brake pedal firm ly
depressed until the braking situation has passed.
To car ryout maximum full-s top braking:
dep ress the brake pedal with full forc e. Fu
nction of BAS (Brake Assist Sy stem) &
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assi stSys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an emergency braking situation is
increased. #
Depress the brake pedal with full force
in emer gency braking situations. ABS
pr eve nts the wheels from locking. BA
S suppo rts yo u with additional braking forc e in
an emer gency braking situation.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatically boosts the braking forc e of
th e brakes
R BAS can sho rten the braking dis tance
R ABS pr events the wheels from locking
When youre lease the brake pedal, the brakes
function as usual again. BAS is deactivated. 14 6
Driving and pa rking
Fu
nctions of ASR (Acceleration Skid Control) ASR can neither
reduce therisk of an accident
nor override the la wsof ph ysics if the driver does
not pay attention when pulling away or accelerat‐
ing. ASR is only an aid. Alw ays adapt your driving
st yle to suit the pr evailing road and weather con‐
ditions.
If yo u activate or deactivate the all-wheel drive in
a ve hicle with this option, ASR will be deactivated
fo rth e duration of the activation/deactivation
process.
Ve hicles without steering wheel but tons: if
ASR is malfunctioning, the00E5 indicator lamp
lights up while the engine is running and the
engine output may be reduced (/ page 26).
ASR impr oves traction, i.e. the transfer of po wer
from the tires tothero ad sur face, for a sus tained
period and thereb y,also impr ovesth e driving sta‐
bility of theve hicle. If the drive wheels start to
spin, ASR brakes individual drive wheels and lim‐
its the engine torque. ASRthus significantly
assists you when pulling away and accelerating,
especially on wet or slippe ryroads.
If traction on thero ad sur face is not suf ficient,
eve n ASR will not allow youto pull away without
dif ficulty. The type of tires and totalwe ight of the
ve hicle as well as the gradient of thero ad also
play a crucial role.
If ASR inter venes, the00E5 warning lamp in the
Instrument Display flashes. Fu
nctions of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ry
out vehicle stabilization. In addition, other
driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified spe‐
cialist workshop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilization. #
ESP ®
should only be deactivated in the
fo llowing situations. If
th e sur face requ ires, temp orarily deactivate
ESP ®
when pulling away ( / page 148).
Do not operate theve hicle on a roller dynamome‐
te r (e.g. for a per form ance test). If you ha veto
operate theve hicle on a roller dynamom eter, con‐
sult a qualified specialist workshop beforehand.
If yo u activate or deactivate the all-wheel drive in
a ve hicle with this option, ESP ®
will be deactiva‐
te dfo rth e duration of the activation/deactiva‐
tion process.
If ESP ®
is malfunctioning or deactivated, the
00E5 warning lamp lights up while the engine is
ru nning and the engine output may be reduced
(/ page 26).
% Only use wheels with
there commended tire
sizes. Only then will ESP ®
function properly.
ESP ®
can, within ph ysical limits, monitor and
impr ovedriving stability and traction in thefo l‐
lowing situations:
R When pulling away on wet or slippe ryroad
sur faces
R When braking
R Ifyo u are driving fasterthan 49.7 mph
(80 km/h) in stro ng crosswinds
If th eve hicle is deviating from the direction
desired bythe driver, ESP ®
can stabilize theve hi‐
cle byper form ing thefo llowing actions:
R One or more wheels are braked
R The drive sy stem per form ance is adap ted
depending on the situation
If ESP ®
is deactivated 00BB,the00E5 warning
lamp lights up con stantly in the Instrument Dis‐
play:
R Vehicle stabilization may be dela yed
R Crosswind Assist is still active
R The drive wheels may start tospin
R ASR traction control is no longer active
If ESP ®
is deactivated, ESP ®
will still support you
when braking.
If th e00E5 warning lamp in the Instrument Dis‐
play flashes, one or more wheels ha vereached
th eir tire traction limit:
R Adapt your driving style to suit the pr evailing
ro ad and weather conditions
R Do not deactivate ESP ®
under any circum‐
st ances Driving and parking
147