warning light MERCEDES-BENZ E-CLASS SALOON 2021 Workshop Manual

Head-up display
Head-up display
F
F
unction of t
unction of t he head-up display
he head-up display *
N
NO OTE
TE Mercedes -AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The head-up display projects
thefo llowing infor-
mation into the driver's /eld of vision abo vethe
cockpit, forex ample:
R The vehicle speed
R Information from the navigation system
R Information from the driving systems and driv-
ing saf ety sy stems
R Some warning messages
Depending on theve hicle's equipment, di.erent
content can be shown in theth re e areas of the
head-up displ ay (/page 287). Displa
Displa y cont
y content
ent 1
Navigation instructions
2 Current speed
3 Detected instructions and tra1c signs
4 Set speed in the driving system (e.g. cruise
control)
Syst
Syst em limits
em limits
The visibility of the displa yswill be a.ected bythe
fo llowing conditions:
R Seat position
R Image position setting
R Light conditions R
Wetro ad sur face
R Objects on the display co ver
R Polarisation in sunglasses
% Inextreme sunlight, sections of the display
may appear washed out. You can cor rect this
by switching the head-up display o. and on
again. Se Se
tting t
tting t he head-up displa he head-up displa y using t
y using the on-board
he on-board
com
com put
puter
er On-board computer:
4 HEAD-UP DISPLAY
The following head-up display settings or displa ys
can be selected or shown:
R Position
R Brightness
R Messages
R Assis tance status
R Telephone
R Audio
R LINGU ATRO NIC Instrument displ
ayand on-board computer
287
287

#
T
To switc
o switc h
ho.:
o.: take a hand back away from the
front passenger seat.
The search light is switched o. again. Inf
Inf
or
ormation on
mation on pr
pro/les,
o/les, t
themes, sugg
hemes, sugg es
estions andtions and
fav
fav our
our it
ites
es Fo
r electrically adjustable seats obser vethefo l-
lowing no tes. &
W
WARNING
ARNING Risk of becoming trapped dur-
ing adjustment of the driver's seat aTer
calling up a driver pro/le
Selecting a user pro/le may trigger an adjust-
ment of the driver's seat tothe position sa ved
under the user pro/le. You or other vehicle
occupants could be injured in the process. #
Make sure that when the position of the
driver's seat is being adjus ted via the
multimedia system, no people or body
parts are in the seat's range of mo ve-
ment. If
th ere is a risk of someone becoming trap-
ped, stop the adjustment process immedi-
atel y: #
a)Tapth ewa rning message onthe
media displa y.
or #
b) Press a memory function position but-
ton or a seat adjustment switch on the
driver's door.
The adjustment process will be stopped. The driver's seat is equipped with an access pre-
ve
nter.
If th e driver's door is open, the driver's seat will
not not be set aTer calling up the driver's pro/le.
Pro/les store your vehicle settings and settings
fo rth e multimedia system. If theve hicle is used
by several drivers, the driver can select their own
pro/le without changing the stored pro/le settings
of other drivers.
% Information on pro/les from Mercedes me
connect can be found in the Digital Opera-
to r's Manual. Ve
hicle settings are, forex ample, driver's seat,
steering wheel and mir ror settings, climate control
and ambient lighting. Forth e settings of the multi-
media system, you can select, forex ample, radio
stations, pr evious destinations as well as themes,
suggestions and favo urites.
Fo rre cur ring driving situations, such as long
drives on the mo torw ay,yo u can sa veyour prefer-
re d settings in a theme in theve hicle. In a theme
yo u can sa vethe display of the digital map, your
prefer redra dio station and prefer red drive pro-
gr am, forex ample.
The vehicle can learn the habits of the driver. It
th en o.ers suggestions forth e most probable
navigation destinations, media sources, radio sta-
tions or contacts. The pre-requirements forth at
are the selection of a pro/le, your consent tothe
re cording of data and su1cient collected data.
Fa vourites pr ovide quick access toapplications
th at are used oTen. You can select favo urites
from categories or add them directly toan appli-
cation. 320
320
MBUX multimedia system

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 182)
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 To show
o show :
:ta p on theto uchscreen.
The menu is hidden automaticall y. MBUX multimedia system
327
327

Then,
you can select a service and be connected
to a specialist at the Mercedes-Benz Customer
Centre.
Calling t
Calling t he Mer he Mercedes-Benz Cust
cedes-Benz Cust omer Centr
omer Centre
eaTer
aTer
aut
aut omatic accident or br
omatic accident or br eakdo
eakdown det
wn det ection
ection
R
R eq
eq uir
uir ements:
ements:
R The vehicle has de tected an accident or break-
down situation.
R The vehicle is stationar y.
R The hazard warning lights are switched on.
% This function is not available in all countries.
The vehicle can de tect accident or breakdown sit-
uations under cer tain circumstances.
In theev ent an accident or breakdown is de tec-
te d, the emer gency guide sh ows saf ety no tes in
th e multimedia system displa y.
ATer quitting the emer gency guide display on the
multimedia system, a prom ptappears asking
whe ther youwo uld like toget support from the
Mercedes-Benz Customer Centre. #
Select Call.
R ATer your ag reement, or if the Mercedes
me connect service "Accident and Break-
down Management" is active, theve hicle
data is transfer red automatically
(/ page 343).
R The Mercedes-Benz Customer Centre
ta ke syo ur call and or ganises the break-
down and accident assistance.
Yo u may be charge dfo rth ese services.
% Depending on the se verity of the accident, an
automatic emer gency call can be initia ted.
This has priority over all other active calls.
% In addition, if the Mercedes me connect
service "Telediagnostics" is active, a similar
prom ptcan appear aTer a delay in theev ent
of a breakdown. If you are already in contact
with the Mercedes-Benz Customer Centre or
ha ve already received support, this prom pt
can be ignored or declined.
% Ifyo u answer the prom ptfor support from the
Mercedes-Benz Customer Centre with Later,
th e message will be hidden and appear again
later. The prom
pttriggered bythe Mercedes me
connect service "Telediagnostics", can either
be con/ rmed or declined. ATer being
declined, this will not be shown again.
Arr Arr anging a ser
anging a ser vice appointment via a Mer
vice appointment via a Mer cedes
cedes
me call
me call
If yo u ha veactivated the maintenance manage-
ment service, releva nt vehicle data is transfer red
automatically tothe Mercedes-Benz Customer
Centre. You will then receive individual recom-
mendations rega rding the maintenance of your
ve hicle.
Re gardless of whe ther you ha veconsen tedto the
maintenance management service, the multime-
dia system reminds you aTer a cer tain amount of
time that a service is due. A prom ptappears ask-
ing if youwo uld like tomake an appointment. #
T To arr
o arr ang
ange a ser
e a ser vice appointment
vice appointment: :select Call.
ATer your ag reement, theve hicle data is
transfer red and the Mercedes-Benz customer
centre take syo ur prefer red appointment date.
The information is then sent toyour desired
service outlet. 340
340
MBUX multimedia system

Opening t
Opening t
he bonnet
he bonnet #
Torelease the bonnet, pull on handle 1. #
Push handle 1ofthe bonnet catch upwards
and liT the bonnet until it opens automaticall y.
Closing t
Closing t he bonnet
he bonnet #
Lowe rth e bonnet toa height of around 20 cm
and then allow it tofall, applying a little force
as you let it go. #
Ifth e bonnet can still be liTed slightl y,open
th e bonnet again and close it with a little more
fo rc e until it engages cor rectl y. Engine oil
Engine oil
Chec
Chec
king t
king t he engine oil lev
he engine oil lev el using t
el using the oil dips
he oil dips tick
tick &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. R
R
eq
eq uir
uir ements:
ements:
R The engine has an oil dipstic k.If not, the
engine oil le vel can be checked only with the
on-board computer (/ page 363) .
Depending on the engine, the oil dipstick may be
installed in the engine compartment in di.erent
locations. 362
362
Maintenance and care

-
Neutral 005Cis engaged.
- Ifyo uwo uld like tolea vetheve hicle while
it is being washed, make sure theke y is
located in theve hicle. The park position
005D isotherwise automatically engaged.
% If, aTer the car wash, youre mo vethewax
from the windscreen and wiper rubbers, this
will pr event smearing and reduce wiper noise. Inf
Inf
or
ormation on using a high-pr
mation on using a high-pr essur
essure cleaner
e cleaner &
W
WARNING
ARNING Risk of an accident when using
high-pressure cleaners with round-spr ay
nozzles
The water jet can cause extern ally invisible
damage.
Components damaged in this wa y may un ex-
pectedly fail. #
Do not use a high-pressure cleaner with
ro und-spr aynozzles. #
Have damaged tyres or chassis parts
re placed immediatel y. To
avo id damage toyour vehicle, obser vethefo l-
lowing when using a high-pressure cleaner:
R The key is at a minimum dis tance of 3 m away
from theve hicle. Otherwise the boot lid could
open unintentionall y.
R Maintain a distance of at least 30 cm tothe
ve hicle.
R V Vehicles wit
ehicles with decor h decorativ
ative f
e foil:
oil: Parts of your
ve hicle are co vered with a decorative foil.
Maintain a distance of at least 70 cm between
th efo il-co vered parts of theve hicle and the
nozzle of the high-pressure cleaner. Mo vethe
high-pressure cleaner nozzle around whilst
cleaning. The waterte mp erature of the high-
pressure cleaner must not exceed 60°C.
R Obser vethe information on the cor rect dis-
ta nce in the equipment manufacturer's oper-
ating inst ructions.
R Do not direct the nozzle of the high-pressure
cleaner directly at sensitive parts, such as
tyres, gaps, electrical components, batteries,
light sources and ventilation slits. W W
ashing t
ashing t he v
he vehicle b
ehicle b y hand
y hand *
N
NOOTE
TE Engine damage due towa ter ing ress #
Take care not topoint thewa ter jet
directly towa rdsth e air inlet grille below
th e bonnet. obser
vethe legal requ irements, e.g. in a number
of countries, washing byhand is only permitted in
special lydesignated wash ba ys. #
Use a mild cleaning agent, e.g. car shampoo. #
Washtheve hicle with luk ewarm water using a
soT car sponge. When doing so, do not
ex pose theve hicle todirect sunlight. #
Carefully hose theve hicle o. with water and
dry using a chamois.
% Obser vethe no tes on the care of car parts
(/ page 370). N
No
ot
tes on paintw
es on paintw or
ork/matt
k/matt /nish
/nishpaintw
paintw or
ork care
k care To
avo id damaging the paintwork and inter fering
with the driving assistance systems, please
obser vethefo llowing no tes: 368
368
Main
tenance and ca re

N
N
o
ot
tes on car
es on car e of t
e of the int
he int er
erior
ior &
W
WARNING
ARNING Risk of injury from plastic parts
breaking o. aTer the use of sol vent-based
ca re products
Care and cleaning products containing sol-
ve nts can cause sur faces in the cockpit to
become porous. When the airbags are
deplo yed, plastic parts may break away. #
Do not use any care or cleaning products
containing sol vents toclean the cockpit. &
W WARNING
ARNING Risk of injury or fatal injuries
from bleached seat belts
Bleaching or dyeing seat belts can se verely
we aken them.
This can, forex ample, cause seat belts to tear
or fail in an accident. #
Never bleach or dye seat belts. To
avo id damage totheve hicle, obser vethefo l-
lowing no tes on cleaning and care: Seat belts
Seat belts
R Clean with luk ewarmand soapy water.
R Do not use chemical cleaning agents.
R Do not dry byheating them toove r 80°C or
ex posing them todirect sunlight.
Display
Display
R Switch o. the display and let it cool down.
R Clean the sur face carefully with a micro/bre
clo thand a suitable displ aycare product (TFT-
LC D).
R Do not use any other agents.
Head-up displ ay
Head-up display
R Clean with a soT, non-static, lint-free clo th.
R Do not use cleaning agents.
Plas
Plastic tr tic tr im
im
R Clean with a damp micro/bre clo th.
R For heavy soiling: Use a cleaner recommen-
ded for Mercedes-Benz.
R Do not attach stic kers, /lms or similar materi-
als. R
Do not allow cosmetics, insect repellent or
sun cream tocome in contact with the plastic
trim.
R
R eal w
eal w ood and tr
ood and tr im elements
im elements
R Clean with a micro/bre clo th.
R Blackpiano-lacquer look: Clean with a damp
clo thand soapy water.
R For heavy soiling: Use a cleaner recommen-
ded for Mercedes-Benz.
R Do not use sol vent-based cleaning agents, pol-
ishes or waxes.
R
R oof lining
oof lining
R Clean with a brush or dry shampoo.
Car
Car pet
pet
R Use a carpet and textile cleaning agent recom-
mended for Mercedes-Benz.
St
St eer
eer ing wheel made of g
ing wheel made of g enuine leat
enuine leather or DINA-
her or DINA-
MICA
MICA
* NO
NOTE
TEDamage caused bywrong cleaners #
Do not use sol vent-based cleaning
agents such as tarre mo ver or wheel 372
372
Maintenance and care

#
Take care toonly connect battery term i-
nals of identical polarity when receiving
starting assistance. #
Obser vethe sequence described for
connecting and disconnecting the jump
leads when receiving starting assistance. #
Do not connect or disconnect the bat-
te ry term inals while the engine is run-
ning. &
W
WARNI NG
ARNI NGRisk of explosion due toexplo-
sive mixture of gases
An explosive mixture of gases can escape
from the battery during charging and starting
assis tance. #
Fire , naked 0ames, smoking and creating
spar ksmust be avoided. #
Make sure there is adequate ventilation. #
Do not stand overth e batter y. &
W
WARNI NG
ARNI NGRisk of explosion from a frozen
battery
A dischar ged battery may freeze at temp era-
tures slightly abo veor below freezing point.
During starting assistance or battery charging,
battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis-
ta nce. If
th e indicator/warning lamps in the instrument
cluster do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has frozen.
In this case you may neither jump-start theve hi-
cle nor charge the batter y.
The service life of a bat tery that has been thawed
may be dramatically shor tened. The starting char-
acteristics may be impaired, especially at low
te mp eratures.
It is recommended that you ha veath awe d battery
ch ecked at a quali/ed specialist workshop. V
V ehicles wit
ehicles wit h plug-in h
h plug-in hybr
ybrid:
id:
If yo ur vehicle has been star ted with starting
assistance, it may not be possible touse the elec-
tric drive for appr oximately 30 minutes.
St arting assis tance is not considered tobe a nor-
mal operating condition.
All v All v ehicles
ehicles
* NO
NOTE
TEDamage caused bynume rous or
ex tended attem ptsto start the engine Numerous or
extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combusted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting assis-
ta nce and when charging the batter y:
R Only use undamaged jump lead/charging
cables with a su1cient cross-section and
insulated term inal clamps.
R Non-insulated parts of thete rm inal clamps
must not come into contact with other me tal 384 384
Breakdown assistance

Information on coolant is
available at thefo l-
lowing locations:
R Inthe Mercedes-Benz Speci/cation for
Operating Fluids 320.1
- Athttps://be vo.mercedes-benz.com
- Inthe Mercedes-Benz BeVo App
R Ataqu ali/ed specialist workshop *
N NOOTE TE Overheating at high outside temp er-
atures If an inappropriate coolant is used,
the engine
cooling system is not su1ciently pr otected
against overheating and cor rosion at high out-
side temp eratures. #
Only use coolant appr ovedby Mercedes-
Benz. #
Obser vethe inst ructions in the
Mercedes-Benz Speci/cations for Oper-
ating Fluids 320.1. Ha
ve the coolant regula rly re placed at a quali/ed
specialist workshop. Proportion of antif
reeze concentrate in the engine
cooling system:
R A minimum of 50% (antifreeze pr otection down
to about -37°C)
R A maximum of 55% (antif reeze pr otection
down to-45°C) N
No ot
tes on windscr
es on windscr een w
een washer
asher 0uid
0uid Obser
vethe no tes on operating 0uids
(/ page 417). &
W
WARNING
ARNING ‑ Risk of /re and injury due to
windscreen washer concent rate
Wi ndsc reen washer concent rate is highly 0am-
mable. It could ignite if it comes into contact
with hot engine component parts or the
ex haust system. #
Make sure that no windscreen washer
concent rate spills out next tothe /ller
opening. *
N NOOTE
TE Damage totheex terior lighting due
to unsuitable windscreen washer 0uid Unsuitable windscreen
washer 0uids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer 0uids which
are also suitable for use on plastic sur fa-
ces, e.g. MB SummerFit or MB WinterFit. *
N
NOOTE
TE Bloc ked spr aynozzles caused by
mixing windscreen washer 0uids #
Do not mix MB SummerFit and MB Win-
te rFit with other windscreen washer 0u-
ids. Do not use distilled or de-ionised
water. Other-
wise, the /ll le vel sensor may be triggered er rone-
ous ly.
Re commended windscreen washer 0uid:
R abo vefreezing point: e.g. MB SummerFit
R below freezing point: e.g. MB WinterFit 426
426
Te
ch nical data

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot for starting the engine with theke y (/ page 168). Lights Lights
Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences and0050
0050Solutions
Solutions
:
Left dipped beam (examp le) *T
he cor responding light source is defecti ve. #
Drive on carefull y. #
Consult a quali/ed specialist workshop immediatel y.
% LED light sources: the display message forth e cor responding light appears only when all the light-emitting diodes
in the light are faulty.
: Malfunction See Owner's
Manual *T
heexterior lighting is malfunctioning. #
Consult a quali/ed specialist workshop.
*V Vehicles wit ehicles wit h a tr
h a trailer hitc
ailer hitc h:
h:a fuse may ha veblown. #
Stop theve hicle in accordance with the tra1c conditions. #
Check the fuses and replace them if necessary (/ page 392).440
440
Display messages and
warning/indicator lamps