engine MERCEDES-BENZ E-CLASS ESTATE 2021 Service Manual

F
F
unctions of
unctions of O.-r
O.-road
oad ABS
ABS %
O.-road ABS is activated automatically when
yo u select theF orG drive prog ram.
O.-road ABS is specially adap tedfo r driving o.-
ro ad:
R The front wheels lock cyclical lyduring braking.
R The braking distance is shor tened due tothe
digging-in e.ect.
Syst
Syst em limits
em limits
R O.- road ABS functions at speeds below
40 km/h.
R If O.-road ABS inter venes, the ability tosteer
ma y be restric ted. F
F
unction of B
unction of B AS
AS &
W
WARNING
ARNING Risk of an accident caused by a
malfunction in BAS(Brake Assist System)
If BAS is malfunctioning, the braking distance
in an emer gency braking situation is
increased. #
Dep ress the brake pedal with full forc e in
emer gency braking situations. ABS pre-
ve nts the wheels from locking. The Brake Assist System (BAS) supports
your
emer gency braking situation with additional brake
fo rc e.
If yo u depress the brake pedal quickl y,BAS is
activated:
R BAS automatically boosts the brake pressure.
R BAS can shor tenth e braking distance.
R ABS pr events the wheels from locking.
The brakes will function as usual once youre lease
th e brake pedal. BASis deactivated. F
F
unction of ESP
unction of ESP ®
® &
W
WARNING
ARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilisation. #
ESP ®
should only be deactivated in the
fo llowing situations. *
N
NOOTE
TE Mercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The Electronic
Stability Prog ram (ESP ®
) can moni-
to r and impr ove driving stability and traction in
th efo llowing situations within ph ysical limits:
R When pulling away on wet or slippery car riage-
ways.
R When braking.
If th eve hicle deviates from the direction desired
by the driver, ESP ®
can stabilise theve hicle by
inter vening in thefo llowing ways:
R One or more wheels are braked.
R The engine output is adap ted according tothe
situation. 232
232
Driving and parking

high cent
reofgrav ity may tip over before
ESP ®
de tects this. #
Always adapt your driving style tosuit
th e cur rent road and weather conditions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h.
R Slight swerving is reduced bymeans of a tar-
ge ted, individual brake application on one
side.
R Intheev ent of se vere swerving, the engine
output is also reduced and all wheels are
braked.
ESP ®
trailer stabilisation may be impaired or may
not function if:
R The trailer is not connected cor rectly or is not
de tected proper lyby theve hicle. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating ESP
ating ESP®
®
(Electr
(Electr onicSt
onic Stability
ability
Pr
Pr ogr
ogr am)
am) Multimedia system:
4 © 5
Settings 5
Quick access
% ESP®
can only be activated/deactivated using
qu ick access when at least one other function
is available in quick access. ESP ®
can other-
wise be found in theAssistance menu.
* N
NOOTE
TE Mercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. #
Select ESP. #
Select Onorå Off.
% If ESP ®
is deactivated and drive prog ram
Î was pr eviously selected, drive prog ram
A is automatically activated the next time
th e engine is star ted. ESP
®
is deactivated if theå ESP®
OFF warn-
ing lamp lights up continuously in the inst rument
cluster.
Obser vethe information on warning lamps and
display message s which may be shown in the
inst rument cluster. F F
unction of EBD
unction of EBD Electronic Breakforce Distribution (EBD) is
char-
acterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking, espe-
cially on bends. F F
unction of S
unction of S TEER C
TEER CONTR
ONTROL
OL ST
EER CONTROL assists youby transmitting a
noticeable steering forc eto the steering wheel in
th e direction requ ired forve hicle stabilisation. 234 234
Driving and parking

R
IfAc tive Steering Assist is activated and active
(/ page 250).
R Ifth e time has been set incor rectl y.
R Ifyo uch ange lanes and vary your speed fre-
qu ently in active driving situations.
The ATTENTION ASSIST dr owsiness or alertness
assessment is reset and restar ted when continu-
ing the journey in thefo llowing situations:
R You switch o. theve hicle.
R Ifyo u unfasten your seat belt and open the
driver's door (e.g. tochange drivers or take a
break).
Se
Se tting A
tting A TTENTION ASSIST
TTENTION ASSIST
Multimedia system:
4 © 5
Settings 5
Assistance
5 Attention Assist
Se
Se tting op
tting op tions
tions #
Select Standard, SensitiveorOff.
Sugg Sugg es esting a rting a r es
est art ar ea
ea #
Select Suggest rest area. #
Activate or deactivate the function.
If AT TENTION ASSIST de tects fatigue or
increasing lack of attention, it suggests a rest
area in the vicinity. #
Select the suggested rest area.
Yo u are guided tothe selected rest area. Cr
Cr
uise contr
uise control and limit ol and limit er
er F
F
unction of cr
unction of cr uise contr
uise controlol
Cruise control regula testh e speed totheva lue
selected bythe driver.
If yo u accelerate toove rtake, forex ample, the
stored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal aTer overtaking,
cruise cont rol will resume speed regulation back
to the stored speed.
Yo u can store any speed abo ve20 km/h up tothe
maximum design speed or up tothe set winter
tyre limit.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 229). Mer
Mer cedes‑
cedes‑ AMG v
AMG vehicles:
ehicles: cruise cont rol is availa-
ble up toa maximum speed of 250 km/h.
Displ ay
Display s in t
s in the Ins
he Instr trument Display
ument Display
R h (gre y): cruise control is selected but not
yet activated.
R h (gre en): cruise control is active.
A stored speed appears along with theh dis-
pla y.
% The segments extending from the cur rent
stored speed tothe end of the scale, or tothe
set winter tyre limit, light up in the speedome-
te r.
Syst
Syst em limits
em limits
Cruise control may be unable tomaintain the
stored speed on uphill gradients. The stored
speed is resumed when thegr adient evens out.
Change into a lo werge ar in good time on long and
steep downhill gradients. Take particular no teof
th is when driving a laden vehicle. By doing so, you
will make use of the engine's braking e.ect. This
re lie vesth e load on the brake system and pre-
ve nts the brakes from overheating and wearing
to oqu ickl y. 238
238
Driving and parking

Optionall
y,obstacles de tected byParking Assist
PA RKTRONIC from a distance of app roximately
1.0 m in front 2and 0.7 m on the side 3can
also be displa yed in the head-up displa y.
Syst
Syst em limits
em limits
Pa rking Assist PARKTRONIC does not necessarily
ta ke into account thefo llowing obstacles:
R Obstacles below the de tection range, e.g. per-
sons, animals or objects.
R Obstacles abo vethe de tection range, e.g.
ov erhanging loads, overhangs or loading
ra mp s of lor ries. R
Pedest rians or animals approaching theve hi-
cle from the side.
R Objects placed next totheve hicle.
Obs tacles on the sides are not shown in thefo l-
lowing situations, forex ample:
R You park theve hicle and switch it o..
R You open the doors.
ATer an engine start, obstacles must be de tected
again bydriving past them before a warning can
be issued.
Obser vethe information on vehicle senso rsand
cameras; the system otherwise cann otfunction
proper ly (/ page 229).
V V ehicles wit
ehicles wit h tr
h trailer hitc
ailer hitc h:
h:Parking Assist
PA RKTRONIC is deactivated forth ere ar zone
when you establish an electrical connection
between your vehicle and a trailer. Pr
Pr
oblems wit
oblems wit h P
h Par
arking Assis
king Assis t P
t PARK
ARK TR
TRONIC
ONIC 1
Vehicles with 360° Camera
2 Vehicles without 360° Camera
If th ePa rking Assist PARKTRONIC display lights
up redfo r appr oximately thre e seconds then goes
out, and theé symbol appears in the inst ru-
ment cluster, the system may ha vebeen deactiva-
te d due tosignal inter fere nce. Start theve hicle
again and check if Parking Assist PARKTRONIC is
wo rking at a di.erent location. Driving and parking
277
277

Ov
Ov
er
ervie
vie w of ins
w of ins tr
trument display
ument display 1
Speedome ter
The segments on the speedome ter indicate
th e statuses of thefo llowing systems: cruise
control/limiter/Active Distance Assist
DISTRONIC
2 Index points
3 Outside temp erature 4
Time
5 Area for additional values (e xample:rev coun-
te r): rev counter/navigation/ECO display/
consum ption/G-me ter/date
The fuel supply will be inter rupted toprotect
th e engine when there d mark on therev
counter (o verrev ving range) is reached. Plug-in
hybrid: electric mo tor po werav ailabil-
ity displ ayor po wer me ter
6 Coolant temp erature display
During normal operation, the coolant temp er-
ature display is permitted torise to120°C.
Ve hicles with 48 V on-board elect rical system:
POWER and CHARGE displa ys(electrical drive Instrument display and on-board computer
297 297

F
F
ull-scr
ull-scr een menus
een menus
Yo u can display thefo llowing menus full-screen on
th e inst rument displa y:
R Assistance
R Trip
R Navigation #
Onthe cor responding menu, use the leT-hand
To uch Control toscroll tothe end of the list. #
Press the leT-hand Touch Control.
The selected menu will be displa yed full-
screen. F
F
unction of t
unction of t he pow
he power met
er meter (plug-in h
er (plug-in h ybr
ybr id)
id) 1
Combustion engine and electric mo tor
switched o.
2 Position in the display range of there co vered
energy
3 Start of the display range of there cuperated
energy
4 End of the display range of the combined out-
put of thehy brid system
The po wer me ter has thefo llowing functions:
R The po wer me ter displa ys the output obtained
from thehy brid system. R
Area 2-3 shows th ere ga ined energy.
R When the po wer me ter needle is at position
1, theve hicle is switched o.. The combus-
tion engine and the electric mo tor are
switched o..
R Powe rra nge 3–4 show sth e combined
output of thehy brid system. F
F
unction of t
unction of t he electr
he electric mot
ic mot or pow
or pow erav
er availability
ailability
displa
displa y (plug-in h
y (plug-in h ybr
ybrid)
id) 1
Start of the POWER display range
2 End of the POWER display range
3 Maximum recuperated energy 300
300
Instrument display and on-board computer

4
Start of the display range of there cuperated
energy
5 Current state of charge ofthe high-voltage
battery
R In electric mode, the area 1-2 shows
what percentage of the electrical drive is cur-
re ntly being used. The combustion engine is
switched on at a percentage of 100%. If the
combustion engine is running, boost mode
sh ow sth e electrical po wer assistance of the
drive.
R The area 34shows th ere cuperation and
ch arging behaviour using the combustion
engine.
R From point 3,the maximum recuperated
energy has been reached.
R The cur rent state of charge of high-voltage
battery 5is displa yed.
% Due tovarious system limits, the displa yed
va lue in the area 34may temp orarily dif-
fe r slightly from the actual value. Displa
Displa
ying t
ying the pow
he pow er met
er meter (plug-in h
er (plug-in h ybr
ybrid)
id)
On-board computer: 4 Content #
Select Power meter. Ov Ov
er ervie
vie w of display
w of display s on t
s on the ins
he instr trument display
ument display
Displa yson the inst rument displa y:
u Active Parking Assist activated
(/ page 281)
é Parking Assist PARKTRONIC deactivated
(/ page 278)
h Cruise control (/ page 238)
È Limiter (/ page 239)
ç Active Distance Assist DISTRONIC
(/ page 241)
ê Active Brake Assist (/ page 257)
à Active Steering Assist (/ page 250)
¬ Active Stop-and-Go Assist (/ page 248)
à Active Lane Keeping Assist (/ page 262)
õ PLUG‑IN HYBRID operation activated ñ
Operating mode, other operating mode dis-
pla ys
è Electric range
° Haptic accelerator pedal
(/page 190, 195, 193)
ò Sound generator inoperative (/ page 462)
è ECO start/stop function (/ page 188)
ë HOLD function (/ page 235)
_ Adaptive Highbeam Assist (/ page 147)
Ad aptive Highbeam Assist Plus
(/ page 148)
ð Maximum permissible speed exceeded (for
cer tain countries only)
V
V ehicles wit ehicles wit h
hTr
Tra1c
a1c Sign Assist:
Sign Assist: detected instruc-
tions and tra1c signs (/ page 257).
Fo r an overview of the indicator and warning
lamps, see (/ page 517). Instrument display and on-board computer
301
301

F
F
unctions of t
unctions of t he ener
he energy
gy0ow
0ow display
display 1
State of charge ofthe high-voltage battery
2 Combustion engine
3 Energy 0ow
4 High-voltage battery
5 Status of thero ute-based operating-mode
strategy (/ page 194)
The active components of thehy brid system are
highlighted in the energy 0ow displa y.The energy
0ow between the individual components is shown
in colour. The energy 0ow is shown in di.erent colours
depending on the operating status:
R Whit
Whit e:
e:constant energy 0ow
R R
Red:
ed: high energy 0ow (boost e.ect)
R Gr
Green:
een: low- emission energy 0ow in the case of
re cuperation, elect ric mode and when charg-
ing the high-voltage battery N
N
a
avig
vig ation
ation N
No
ot
tes on na
es on na vig
vigation
ation R
R
out
out e guidance wit
e guidance wit h augment
h augmented r
ed reality
eality &
W
WARNING
ARNING Risk of accident and injury as a
re sult of distraction, inco rrect depiction or
wrong interpr etation of the display
The camera image of the augmented reality
displ ayis not suitable as a guide for driving. #
Alwayske ep an eye on the actual tra1c
situation. #
Avoid extended obser vation of the cam-
era image. &
W
WARNING
ARNING Risk of accident and injury due
to imprecise positioning of additional
information
The additional information from the augmen-
te dre ality displ aymay be inaccurate and is
not a substitute for observing and assessing
th e actual driving situation. #
Alwayske ep an eye on the actual tra1c
situation when car rying out all driving
manoeuvres. Switc
Switc
hing na
hing na vig
vig ation on
ation on Multimedia system:
4 © 5
Navigation (Navigation) #
Alternativel y:press thez button.
The map displa ys the cur rent vehicle position.
The navigation menu is shown.
The navigation menu is hidden if route guid-
ance is active. #
T
T o show o show :
:ta p on theto uchscreen.
The menu is hidden automaticall y.342
342
MBUX multimedia system

ASS
YS
ASS YST PL
T PL US ser
US ser vice int
vice int erv
erval display
al display F
F
unction of t
unction of t he ASSYS
he AS SYST PL
T PL US ser
US ser vice int
vice int erv
erval dis-
al dis-
play
play The ASS
YST PLUS service inter val display on the
inst rument display informs you of the time or dis-
ta nce remaining before the next service due date.
Yo u can hide this service display using the back
button Gonthe leT-hand side of the steering
wheel.
Depending on how theve hicle is used, the
ASS YST PLUS service inter val display may shor ten
th e service inter val, e.g. in thefo llowing cases:
R Mainly short-distance driving
R When the engine is oTen leT idling for long
periods
R Intheev ent of frequent cold start phases
R V
V ehicles wit ehicles wit h a diesel par
h a diesel par ticulat
ticulate
e/lt
/lt er:
er: inthe
ev ent of frequently inter rupted rege neration of
th e diesel particulate /lter
Mercedes-Benz recommends avoiding such oper-
ating conditions. Yo
u can obtain information concerning the servic-
ing of your vehicle from a quali/ed specialist
wo rkshop, e.g. a Mercedes-Benz service cent re. Displa
Displa
ying t
ying t he ser
he ser vice due date
vice due date On-board computer:
4 Service 5
ASSYST PLUS
The next service due date is displa yed. #
T
T o e
o e xit t
xit t he displa y:
he displ ay:press the back button
G onthe leT-hand side of the steering
wheel.
Bear in mind thefo llowing related topic:
R Operating the on-board computer
(/ page 298). Inf
Inf
or
ormation on r
mation on r egular maint
egular maint enance w
enance work
ork *
N
NOOTE
TE Premature wearthro ugh failure to
obser veservice due dates Main
tenance workwhich is not car ried out at
th eright time or inco mplete ly can lead to
increased wear and damage totheve hicle. #
Adhere tothe prescribed service inter-
va ls. #
Always ha vethe prescribed maintenance
wo rkcar ried out at a quali/ed specialist
wo rkshop. N
No
ot
tes on special ser
es on special ser vice r
vice req
equir
uir ements
ements The prescribed service inter
val is based on nor-
mal operation of theve hicle. Ha vethe mainte-
nance workcar ried out more oTen than prescri-
bed if operating conditions are di1cult or the
ve hicle is subject toincreased stress.
The ASS YST PLUS service inter val display is only
an aid. The driver of theve hicle bears responsibil-
ity as rega rdsto whe ther maintenance work
needs tobe per form ed more oTen than speci/ed
based on the actual operating conditions and/or
loads.
Examples of arduous operating conditions:
R Regular city driving with frequent intermediate
stops
R Mainly short-distance driving 374 374
Maintenance and care

R
Frequent operation in mountainous terrain or
on poor road sur faces
R When the engine is oTen leT idling for long
periods
R Operation in particular lydusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air /lter, air /lter, engine oil and oil /lter,
fo rex ample, changed more frequentl y.The tyres
must be checked more frequently if theve hicle is
operated under increased loads. Further informa-
tion can be obtained at a quali/ed specialist work-
shop. Batt Batt
er
ery disconnection per
y disconnection per iods
iodsThe AS
SYST PLUS service inter val display can cal-
culate the service due date only when the battery
is connected. #
Display and no tedown the service due date
on the inst rument display before disconnect-
ing the battery (/ page 374). Engine com
Engine com
par
partment
tment A
A
ctiv
ctiv e bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otection)
ection) Oper
Oper
ation of t
ation of t he activ
he active bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otec-
ec-
tion)
tion)
In cer tain accident situations, the actuation of the
active bonnet reduces therisk of injury topedes-
trians. The rear area of the bonnet is raised by
appr oximately 80 mm.
ATer being triggered, the active bonnet remains in
th era ised position. Limited visibility due tothe
ra ised bonnet cannot be ruled out.
ATer the active bonnet has been actuated, pedes-
trian pr otection may be limited.
Ha ve the full functionality of the active bonnet
re stored immediatel y in aquali/ed specialist
wo rkshop.
If necessar y,adjust your seat position and drive
carefully toaqu ali/ed specialist workshop. If a
safe continued jou rney is not possible, contact a
qu ali/ed specialist workshop. Opening and closing t Opening and closing t
he bonnet
he bonn et &
W
WARNI NG
ARNI NGRisk of accident due todriving
with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine
bonnet is loc ked. &
W
WARNING
ARNING Risk of accident and inju ry
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonnet's range of mo vement. #
Do not open or close the bonnet if there
is a person in the bonnet's range of
mo vement. Maintenance and care
375 375