check oil MERCEDES-BENZ E-CLASS WAGON 2018 Owner's Manual

ASSYST PLUS serv ice interval display
Fu nction of the ASS YST PLUS serv ice interval
displ ay
The ASS YST PLUS service inter val display in the
Instrument Display pr ovides information on the
re maining time or dis tance be fore the next
service due date.
Yo u can hidethis service message using 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
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
Displaying the service due da te
On-board computer:
,6HUYLFH.$66<67 3/86
The next service due date is displa yed.
#To exitth e displa y:Press the back button
on the left-hand side of thesteering wheel. Make sure
toobser vethefo llowing fur ther rela‐
te d subjec t:
ROperating the on-board computer
(→page 216).
Car rying out service workatregular inter‐
va ls
* 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.
#Alw ays obser vethe prescribed service
inter vals.
#Alw ays 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 operation of theve hicle. Service workwill need
tobe per form ed more of ten if theve hicle
is operated under arduous conditions or
increased loads, forex ample:
Rregular city driving with frequent intermedi‐
ate stops.
Rif th eve hicle is primarily used totrave l short
dis tances.
Rfor frequent operation in mountainous terrain
or on poor road sur faces.
Rif th e engine is of ten le ftidling for long peri‐
ods.
Rin particula rly dusty condition sand/o rif air -
re circulation mode is frequently used.
In these or similar operating conditions, ha vethe
interior air filter, engine air filter, engine oil, oil
fi lter etc. changed more frequent ly.Th etire s
must be checked more frequently if theve hicle
is operated under increased loads. Further infor‐
mation can be obtained at a qualified specialist
wo rkshop.
326
Maintenance and care

Engine oil
Checkingthe engine oil le vel using the oil
dip stick
&
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts 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 oil dipstick may be
ins talled in the engine compartment in dif fere nt
locations.
Wa iting time before checking the oil le vel:
REngine at normal operating temp erature: five
minutes.
REngine not at normal operating temp erature
(e.g. the engine was only star ted brief ly): 30
minutes.
#Pa rk theve hicle on a flat sur face.
#Re mo veoil dipstick 1and wipe off.
#Slowly slide oil dipstick 1into the guide
tube tothestop, and take it out again af ter
appr oximately thre e seconds.
ROil le vel is cor rect: oil le vel is between 2
and 3.
ROil le velto o low: oil le vel is at 3or
belo w.
ROil le velto o high: oil le vel is abo ve2.
#Ifth e oil le vel is too lo w,add 1.1 US qt (1 l) of
engine oil.
#If th e oil le vel is too high, drain off excess
engine oil. Consult a qualified specialist
wo rkshop.
Ad ding engine oil
&
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem.
#Let the engine cool down and only
to uch the component parts described
as follo ws .
&
WARNING Risk offire and injury from
engine oil
If engine oil comes into con tact wi thhot
component parts in the engine compart‐
ment, it may ignite.
330 Maintenance and care

#Make surethat no engine oil is spilled
next tothefiller opening.
#Allow the engine tocool off and thor‐
oughly clean the engine oil from compo‐
nent parts before starting theve hicle.
* NO
TEEngine damage causedbyan
incor rect oil filter, incor rect oil or addi‐
tives
#Do not use engine oils or oil filters
which do not cor respond tothe specifi‐
cations explicitly prescribed forth e
service inter vals.
#Do not alter the engine oil or oil filter in
order toachie velonger change inter vals
th an prescri bed.
#Do not use additives.
#Follow the instructions in the service
inter val display rega rding the oil
ch ange.
* NO
TEDama gecaused bytopping up too
much engine oil
Ad ding too much engine oil can cause dam‐
age tothe engine or the catalytic con verter.
#Ha ve excess engine oil remo ved at a
qu alified specialist workshop.
#Tu rn cap 1counter-clockwise and remo ve
it.
#Ad d engine oil.
#Replace cap 1and turn it clockwise as far
as it will go.
#Check the oil le vel again (→page 330).
Checking coolant le vel
&
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem.
#Let the engine cool down and only
to uch the component parts described
as follo ws .
&
WARNING Danger of burn s from hot
coolant
The engine cooling sy stem is pressurized,
particularly when the engine is warm. If you
Maintenance and care 331

Displaymessages
Possible causes/consequences and MSolutions
4
&KHFN (QJLQH 2LO $W 1H[W
5HIXHOLQJ*T
he engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine damage causedbydriving with insuf ficient engine oil#Av oid long journe yswith insuf ficient engine oil.
#Check the engine oil le vel when next refueling.
Ad d engine oil (
→page 330).
No tes on engine oil (
→page 396).
8
)XHO /HYHO /RZ *T
he fuel le vel has dropped into there ser verange.
#Re fuel.
?
*T hefan mo tor is defective.
#Av oiding high loads on the engine, drive on tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below there d marking.
8
*DV &DS /RRVH *T
here has been pressure loss in the fuel sy stem. The fuel filler cap is not closed cor rectly or the fuel sy stem is
leaking.
#Close the fuel filler cap.
#If th e fuel filler cap was already proper lyclosed: consult a qualified specialist workshop.
434
Display messages and warning/indicator lamps

Air Conditioning Malfunction See
Operator's Manual .............................. 442
App lyBrake toShift from 'P' ...............440
ÀAT TENTION ASSIST Inoperative ... 420
ÀAT TENTION ASSIS T:Take a
Break! .................................................. 420
bAu toLamp Function Inoperati ve
............................................................. 448
Au xilia ryBattery Malfunction ..............442
Blind Spot Assist Currently Una vaila‐
ble See Opera tor's Manual .................. 424
Blind Spot Assist Inoperative ............... 426
Blind Spot Assist Not Available When
To wing a Trailer See Operator's Man‐
ual ...................................................... .425
$Che ckBrake Fluid Le vel.............. .412
Check Coolant Le vel See Operator's
Manual ................................................ 430
4Check Engine Oil AtNext Refu‐
eling .................................................... 434 bChe
ckLeft Low Beam (e xam‐
ple) ...................................................... 447
hCheck Tire s ................................. 435
¥Check Washer Fluid .................... 446
ÁCom pressor Is Coolin g................ 422
?Coolant Too Hot Stop Vehicle
Tu rn Engine Off .................................... 431
Cruise Control Canceled ..................... 430
Cruise Control Inoperati ve.................. 430
!Cur rently Una vailable See Oper‐
ator's Manual ........
...
........................... 404
÷Cur rently Una vailable See Oper‐
ator's Manual ...................................... 405
ÂDon't Forget Your Key................ .439
ÁDrive More Slowly ....................... 422
Driver's Door Open & Transmission
No t in P Risk of Vehicle Rolling Away ..440
6Fr ont Left Malfunction Service
Re quired (e xamp le) .............................. 417 Fr
ont Passenger Airbag Disabled See
Operator's Manual ...............................4 18
Fr ont Passenger Airbag Enabled See
Operator's Manual ...............................4 19
8Fu el Level Low ............................ 434
8Gas Cap Loose ............................ 434
!Inoperative See Opera tor's
Manual ................................................4 03
÷Inopera tive See Operator's
Manual ................................................ 406
TInope rative See Operator's
Manual ................................................ 407
GInope rative ................................... 412
ÂKe yNo tDe tected (red displ ay
message )............................................ .439
ÂKe yNo tDe tected (white dis‐
play message ).................................... .439
6Left Side Cu rtain Airbag Mal‐
function Ser vice
R
e quired (e xample)..417
Index 47
7