ASS
YST PLUS se rvice inter val display Fu
nction of the ASS YST PLUS se rvice inter val
displ ay The ASS
YST PLUS service inter val display on the
instrument display pr ovides information on the
re maining time or dis tance be fore the next
service due date.
Yo u can hide this service message byusing the
back button on the left-hand side of thesteering
wheel.
Yo u can obtain fur ther information concerning
th e servicing of your vehicle from a qualified spe‐
cialist workshop, e.g. an authorized Mercedes-
Benz Center. Displaying
the service due da te On-board computer:
4 Service 5
ASSYST PLUS
The next service due date is displa yed. #
Toexitth e displa y:press the back button on
th e left-hand side of thesteering wheel.
Bear in mind thefo llowing related topic:
R Operating the on-board com‐
puter(/ page164) Ca
rrying out maintenance workregular ly *
NO
TEPremature wearthro ugh failure to
obser veservice due dates Service
workwhich is not car ried out at the
ri ght time or incomple tely can lead to
inc reased wear and damage totheve hicle. #
Always obser vethe prescribed service
inter vals. #
Always ha vethe prescribed service
wo rkcar ried out at a qualified specialist
wo rkshop. Special service
requ irements The prescribed service inter
val is based on nor‐
mal vehicle use. Maintenance workwill need to
be per form ed more of tenth an presc ribed if the
ve hicle is operated under arduous conditions or
increased loads.
Examples of arduous operating conditions:
R regular city driving with frequent intermediate
st ops R
mainly short-dis tance driving
R frequent ope ration in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-reci rculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil and
oil filter etc. changed more frequently. If theve hi‐
cle is subjected tohigher loads, the tires must be
ch ecked more frequentl y.Fu rther information can
be obtained at a qualified specialist workshop. Battery disconnection periods
The ASS
YST PLUS se rvice inter val display can
only calculate the service due da tewhen the
battery is connected. #
Notedown the service due date displa yed on
th e Instrument Display before disconnecting
th e battery (/ page 202). Engine compartment
Opening and closing
the hood &
WARNING Risk of accident if the engine
hood is unlatched while driving
An unloc ked engine hood may open up when
th eve hicle is in motion and block your vie w. #
Never unlatch the engine hood while
driving. #
Before every trip, ensure that the engine
hood is latched. &
WARNING Danger of bu rns when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine com‐
partment, you could come into con tact wi th
hot gases or other escaping operating fluids. #
Before opening the hood, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the hood closed and call
th efire service. 202
Maintenance and care
&
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 component parts, e.g. the
ro tation area of thefa n. #
Remo vejewe lry and watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of inju ryfrom touching
component parts under voltage
The ignition sy stem and the fuel injection sys‐
te m wo rkunder high voltage. If youto uch
component parts which are under voltage,
yo u could receive an electric shoc k.#
Neverto uch component parts of the
ignition sy stem or the fuel injection sys‐
te m when the ignition is switched on. Live components of
the fuel injection sy stem
include the injec tors,fo rex ample.
Live components of the ignition sy stem include
th efo llowing:
R Ignition coils
R Spark plug connec tors
R Diagnostic soc ket &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. If
yo u ha vetocar ryout any workinthe engine
compartment, touch only thefo llowing compo‐
nents:
R Hood
R Engine oil filler opening cap
R Washer fluid reser voir cap R
Coolant expansion reser voir cap &
WARNING Risk of inju ryfrom using the
windshield wipers while the engine hood
is open
When the engine hood is open and the wind‐
shield wipers are set in motion, you can be
trapped bythe wiper linkage. #
Always switch off the windshield wipers
and ignition before opening the engine
hood. #
Park theve hicle in a safe location and on a
le ve l sur face if possible. #
Switch off the engine. #
Secure theve hicle against rolling away. &
WARNING Risk of inju rywhen the hood
is opened
When you open the hood, it may suddenly
drop into the end position.
There is a risk of injury for an yone in the
hood's range of mo vement. #
Before releasing the hood, ensure that
th e support is firm ly seated in the
holder. #
Open the hood only when there is no-
one in the hood's range of mo vement. #
Toopen: pull handle 1torelease the hood. #
Reach into thega p and push the hood catch
handle upwards. #
Open the hood and hold it up. Maintenance and care
203
#
Take support 1from the brac ket on the
hood and pull it down wards. #
Inse rtthe support into brac ket below 2. &
WARNING Risk offire due toflammable
material in the engine compartment or
th eex haust sy stem
Clo ths or other flammable materials left in
th e engine compartment bymis take could
igni teupon coming into con tact wi thhot sec‐
tions of the engine or exhaust sy stem. #
Ensure that there are no flammable
ex tern al materials in the engine com‐
partment or on theex haust sy stem af ter
maintenance workhas been conducted. &
WARNING Risk of accident and inju ry
when opening and closing the engine
hood
When opening or closing the engine hood, it
may suddenly drop into the end position.
There is a risk of injury for an yone in the
engine hood's range of mo vement. #
Only open or close the engine hood
when there are no persons in the engine
hood's range of mo vement. *
NO
TEDama getothe hood Pushing
the hood closed with your hands
could damage it. #
Toclose the hood, let it drop from the
specified height. #
Toclose: liftthe hood slightl y. #
Movesupport 1tothe brac ket on the hood
and apply light pressure toengage it. #
Lowe rth e hood and let it drop from a height
of appr oximately 0.5 ft(15 cm). #
If it is still possible tolift the hood a little,
open the hood again and let it drop from a
height of appr oximately 0.7 ft(20 cm) until it
engages cor rectly. Engine oil
Che
cking the engine oil le vel with a dip stick &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component pa rts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and pa rts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
as follo ws. Depending on
the engine, the dipstick may be in
va rying locations in the engine compartment.
Wa iting time before checking the oil le vel:
R engine at normal operating temp erature:
fi ve minutes
R engine not at normal operating temp erature
(the engine was only star ted briefly, forex am‐
ple): 30 minutes Dip
stick (e xamp le) #
Park theve hicle on an even sur face. #
Remo vedipstick 1and wipe it off. 204
Maintenance and care
#
Slowly inse rtdipstick 1into the dipstick
guide tube as far as it will go and pull it out
af te rth re e seconds.
R Oil le vel OK: the oil le vel is between the
MIN and the MAX mar k.
R Oil le velto o low: the oil le vel is at the MIN
mark or belo w. #
Ifth e oil le vel is too lo w,add appr ox.
1. 1 US qt (1 liter) engine oil. #
Ifth e oil le vel is too high, drain off excess
engine oil.
Vi sit a qualified specialist workshop.
Checking the engine oil le vel with an on-
board computer
Re quirements:
R The vehicle is le vel during the measuring
process.
R The hood is not open.
R Depending on the driving profile, the oil le vel
can be displa yed only af ter a driving time of
up to30 minutes and only when the ignition
is switched on.
On-board computer: 4 Service 5
Engine Oil Level
Yo u will see one of thefo llowing messa ges in
th e multifunction displa y:#
Measuring Engine Oil Level...: measurement
ofthe oil le vel not yet possible. Repeat the
qu ery af ter driving a maximum of 30 minutes. #
Engine Oil Level OK andthe bar todisplay the
oil le vel in the multifunction display is green
and lies between "MIN" and "MAX": the oil
le ve l is OK. #
Engine Oil Level Drive until the engine is
warm. :wa rm upthe engine tooperating tem‐
perature. #
Engine Oil Level Correct Measurement Only
if Vehicle Is on Level Ground: park theve hicle
on an even su rface. #
Engine Oil Level Add 1,0 liq.gal. andthe bar
to display the oil le vel in the multifunction dis‐
play is orange and lies below "MIN": add
1. 1 US qt (1 l ) of engine oil. #
Reduce Engine Oil Level andthe bar display‐
ing the oil le vel in the multifunction display is
orange and lies abo ve"MAX": drain off excess
engine oil.
Vi sit a qualified specialist workshop. #
For Engine Oil Level Switch Ignition On :
switch on the ignition in order tocheck the
engine oil le vel. #
Engine Oil Level System Inoperative: sensor is
defective or not connec ted. Visit a qualified
specialist workshop. #
Engine Oil Level System Currently Unavaila-
ble: close the hood.
% Ve
hicles with cold oil le vel displa ys:th e oil
le ve l is automatically displa yed on the multi‐
function display af terth eve hicle has been
non-operational for an extended pe riod. If it
is not possible tomeasu rethe engine oil
le ve l, a releva nt messa gewill appear.
Ad ding engine oil &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. &
WARNING Danger of bu rns when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine com‐
partment, you could come into con tact wi th
hot gases or other escaping operating fluids. #
Before opening the hood, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the hood closed and call
th efire service. If
yo u ha vetocar ryout any workinthe engine
compartment, touch only thefo llowing compo‐
nents:
R Hood
R Engine oil filler opening cap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap Maintenance and care
205
If
yo u ha vetocar ryout any workinthe engine
compartment, touch only thefo llowing compo‐
nents:
R Hood
R Engine oil filler opening cap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap &
WARNING Danger of bu rns when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine com‐
partment, you could come into con tact wi th
hot gases or other escaping operating fluids. #
Before opening the hood, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the hood closed and call
th efire service. &
WARNING Risk of scalding from hot
coolant
The engine cooling sy stem is pressurized,
particular lywhen the engine is warm. If you
open the cap, you could be scalded byhot
coolant spr aying out. #
Let the engine cool down before open‐
ing the cap. #
When opening the cap, wear pr otective
gl ove s and saf etygl asses. #
Open the cap slowly torelease pres‐
sure. Allow
the engine and the engine cooling sy stem
to cool down before checking the coolant le vel or
re filling coolant.
* NO
TEPaint wo rkdamage due tocoolant If coolant
gets on painted sur faces, the paint‐
wo rkcan be damaged. #
Add coolant carefully. #
Remo vespilled coolant. Checking
the coolant le vel Example: coolant
expansion reser voir #
Park theve hicle on an even sur face. #
Open the hood (/ page 202). #
Slowly turn coolant expansion reser voir cap
1 half a turn coun ter-clockwise and allow
exc ess pressure toescape. #
Turn coolant expansion reser voir cap 1fur‐
th er and remo veit. #
Check the coolant le vel.
There is enough coolant in coolant expansion
re ser voir if the coolant reaches the MAX
mar k.
Ad ding coolant #
Refill th e coolant tothe MAX mark on the
coolant expansion reser voir.
Only use coolant appr oved byMercedes-Benz to
avo id damaging the engine cooling sy stem. #
Replace coolant expansion reser voir cap 1
and tigh ten in a clo ckwise direction. #
Start the engine. #
After appro ximately five minutes, switch off
th e engine again and allow it tocool down. #
Che ckthe coolant le vel again and add coolant
if necessar y.
% Obser
veadditional coolant information
(/ page 269). Main
tenance and care 207
Fi
lling up the windshield washer sy stem &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. If
yo u ha vetocar ryout any workinthe engine
compartment, touch only thefo llowing compo‐
nents:
R Hood
R Engine oil filler opening cap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap &
WARNING Danger of bu rns when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine com‐
partment, you could come into con tact wi th
hot gases or other escaping operating fluids. #
Before opening the hood, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the hood closed and call
th efire service. &
WARNING ‑ Risk of fire and injury from
windshield washer concentrate
Wi ndshield washer concentrate is highly flam‐
mable. It could ignite if it comes into con tact
wi th hot engine component parts or the
ex haust sy stem. #
Make sure that no windshield washer
concentrate spills out next tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windshield washer fluid Uns
uitable windshield washer fluid may dam‐
age the plastic sur face of theex terior lighting. #
Only use windshield washer fluids that
are also suitable for use on plast ic sur‐
fa ces, e.g. MB SummerFit or MB Winter‐
Fit. Ad
ding washer fluid Wa
sher fluid reser voir (e xamp le) #
Pre-mix thewa sher fluid in the cor rect mixing
ra tio in a container. #
Park theve hicle on a le vel sur face and secu re
it against rolling away ( /page 132). #
Open the hood (/ page 202). #
Pull the cap of washer fluid con tainer 1
upwards bythest ra p. #
Pour in the pre-mixed washer fluid. #
Press cap 1onto thefiller opening until it
audibly engages. #
Close the hood (/ page 202).
% Mix
thewa sher fluid with windshield washer
concentrate all year round. Comply with the
information about windshield washer fluid in
th ete ch nical da ta (/ page 270).
% Comply with
the fur ther information about
windshield washer fluid (/ page270) Cleaning
thewa ter drain valve of the air
intake box &
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. 208
Maintenance and care
#
Neverto uch the danger zone sur round‐
ing moving component parts, e.g. the
ro tation area of thefa n. #
Remo vejewe lry and watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. If
yo u ha vetocar ryout any workinthe engine
compartment, touch only thefo llowing compo‐
nents:
R Hood
R Engine oil filler opening cap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap #
Open the hood (/ page 202). #
Remo vedirt from water drain valve 2 of air
intake box 1. Draining
the fuel filter &
WARNING Danger of fire and explosion
due tofuel
Fu els are highly flammable. #
It is essential toavoid fire , open flames,
smoking and creating spar ks. #
Before filling up, switch off the engine,
and, if applicable, the auxiliary heating. &
WARNING Risk offire and explosion due
to fuel
Fu els are highly flammable. There is a risk of
fi re and explosion due tocontact wi thhot
component parts. #
Allow the engine and theex haust sys‐
te m to cool down. *
NO
TEEngine damage due todela yed
drainage of the fuel filter Ve
hicles with a diesel engine: delayed
drainage of the fuel filter can lead toengine
damage.
If th e003A indicator lamp lights up, drain the
fuel filter immediately. +
ENVIRONMENTAL
NOTEEnvironmental
pollution due todisposal in a non-envi‐
ro nmental ly-friendly manner #
Dispose of thewate r/fuel mixture in an
environmentally-friendly manner. Mo
tor OM642 #
Park theve hicle in a safe location and secure
it against rolling away. #
Switch off the auxiliary heating
(/ page 100). #
Switch off the engine. #
Open the hood (/ page 202). Maintenance and care
209
#
Place a suitable collector beneath drain hose
2. #
Switch on the ignition. #
Open drain scr ew1 until thewate r/fuel
mixture emerges from drain hose 2.#
Close drain scr ew1 as soon as around
0.2 qt (0.2 liter) of thewate r/fuel mixture has
been collected.
Af ter 30 seconds, the electrical fuel pump
automatically stops the discharge of the
wate r/fuel mixture. #
After draining, switch off the ignition. #
Dispose of the collected water/fuel mixture
in an environmentally responsible manner,
e.g. at a qualified specialist workshop. #
Check that drain scr ew1 has been closed.
If th e engine is running while drain scr ew1
is open, you will lose fuel thro ugh drain hose
2. #
Close the hood (/ page 202). #
003A The indicator lamp does not go out
af te r draining: drainthe fuel filter again. #
003AThe indica tor lamp does not go out
af te r the second draining: consult aquali‐
fi ed specialist workshop.
Mercedes-Benz recommends that you ha vethe
fuel filter drained at a qualified specialist work‐
shop. Cleaning and care
Note
s onwashing theve hicle in an automatic
car wash &
WARNING Risk of accident due to
re duced braking ef fect af terwa shing the
ve hicle
The braking ef fect is reduced af terwa shing
th eve hicle. #
Afterth eve hicle has been washed,
brake carefully while paying attention to
th e traf fic conditions until the braking
ef fect has been ful lyrestored. *
NO
TERisk of damage tothe paintwork
and plastic components If
yo uwa sh your vehicle in Touchless Auto‐
matic Car Wash sy stems that use special
cleaning agents, the cleaning agents used can damage
the paintwork or plastic components
of theve hicle. #
Do not wash theve hicle in Touchless
Au tomatic Car Wash sy stems that use
special cleaning agents. Make sure
that the automatic car wash is suitable
fo rth e size of theve hicle.
Before washing theve hicle in an automatic car
wa sh, fold in the outside mir rors and remo veany
additional antennas. Otherwise, the outside mir‐
ro rs, antennas or theve hicle itself could be dam‐
aged.
Make sure any additional antennas are re-ins tal‐
led and that the outside mir rors are fully folded
out again when you lea vethe automatic car
wa sh.
To avo id damage to yourvehicle, obser vethefo l‐
lowing before using an automatic car wash:
R the side windo wsand the sliding window are
comple tely closed.
R the blo werfo rve ntilation and heating is
switched off.
R the windshield wiper switch is in position 005A.
If th eve hicle is very dirty, wash off excess dirt
before cleaning theve hicle in an automatic car
wa sh.
% Re
moving thewa x from the windshield and
th e wiper rubbers af terwa shing theve hicle,
will help avoid smearing and reduce wiper
noise. Note
s on use of a po werwa sher &
WARNING Risk of accident when using
high-pressu recleaning equipment wi th
ro und-spr aynozzles
The wate r jet from a round-spray nozzle (dirt
grinder) may cause damage totires and sus‐
pension components that is not visible.
Components damaged in this wa y may fail
unexpec tedly. #
Do not use high-p ressure cleaning
equipment with round-spray nozzles to
clean your vehicle. #
Damaged tires or suspension compo‐
nents must be replaced immediatel y. Ne
ver use a po werwa sher in theve hicle interior.
The pressurized water created bythe po wer 210
Maintenance and care