display MERCEDES-BENZ E-CLASS CABRIOLET 2021 Owners Manual

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Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop.
; Engine diagnosis warning
lamp *T
he yellow engine diagnostics warning lamp is lit while the engine is running.
A malfunction has occur red in the engine, theex haust system or the fuel system.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a quali/ed specialist workshop.
V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times aTer refuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency ope ration mode is cancelled. The vehicle need not
be checked. Display messages and
warning/indicator lamps
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Electrical fault warning lamp *T
hered electrical fault warning lamp is lit.
There is a fault in the electrics. #
Notethe messages on the instrument displa y.
8
Fu elreser vewarning lamp
lights up *T
he yellow fuel reser vewarning lamp lights up while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. 436
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Display messages and
warning/indicator lamps

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Electric parking brake indi-
cator lamp (red)
!
The electric parking brake
(yellow) indicator lamp *T
he red electric parking brake indicator lamp 0ashes or is lit.
The yellow electric parking brake indicator lamp is also lit in theev ent of a malfunction. #
Notethe messages on the instrument displa y.
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Brake system warning lamp
(yellow) *T
he yellow brake warning lamp is lit while theve hicle is running. &
W WARNI NG
ARNI NGRisk of an accident due toa brake system malfunction
If th e brake system is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake system checked immediately at a quali/ed specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable distance totheve hicle in front. #
Ifth e inst rument display sho wsa displ aymessage, obser veit. Display message
s andwarning/indicator lamps
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Consult a quali/ed specialist workshop.
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Brake system warning lamp
(red) *T
he red brake warning lamp is lit while theve hicle is running.
Po ssible causes:
R The brake forc e boosting is malfunctioning and the braking characteristics may be a.ected.
R There is insu1cient brake 0uid in the brake 0uid reser voir. #
Notethe messages on the instrument displa y. &
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WARNI NG
ARNI NGRisk of accident and injury if brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in eme rgency braking situations. #
Stop in a safe location immediatel y.Do not continue driving! #
Consult a quali/ed specialist workshop. &
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WARNING
ARNING Risk of an accident due tolow brake 0uid le vel
If th e brake 0uid le vel is too lo w,the braking e.ect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and tra1c conditions. Do not continue driving. #
Consult a quali/ed specialist workshop. #
Do not top up the brake 0uid. 438
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Display messages and
warning/indicator lamps

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Wa rning lamp for distance
wa rning function *T
he red distance warning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obstacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the distance.
Fu nction of Active Brake Assist (/ page 205).
Ó Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
Due todirty sensors or a malfunction, the system is not available or thera nge of functions is restric ted. #
Notethe messages on the instrument displa y.
ê
Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
The system is switched o. or thera nge of functions has been automatically restric ted.
This may be the case if the driver is not wearing a seat belt or ano ther driving system has been activated. #
Obser vethe no tes on Active Brake Assist (/ page 205). Display messages and
warning/indicator lamps
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Suspension warning lamp
(yellow) *T
he yellow AIR BODY CONTROL warning lamp is lit.
The yellow DYNAMIC BODY CONTROL warning lamp is lit.
A fault has occur red in the AIR BODY CONTROL.
A fault has occur red in theDY NAMIC BODY CONTROL. #
Notethe messages on the instrument displa y.Dr
Dr
iving safe
iving safe ty syst
ty systems
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ABS warning lamp *T
he yellow ABS warning lamp is lit while theve hicle is running.
ABS is malfunctioning.
If an additional warning tone sounds, EBD is malfunctioning.
Other driving systems and driving sa fety systems may also be malfunctioning. #
Notethe messages on the instrument displa y. &
W WARNI NG
ARNI NGThere is a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addition,
ot her driving saf ety sy stems are swit ched o.. 440 440
Display messages and
warning/indicator lamps

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ESP ®
OFF warning lamp *
The yellow ESP ®
OFF warning lamp is lit while theve hicle is running.
ESP ®
is deactivated.
Other driving systems and driving sa fety systems may also be inoperative. &
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WARNING
ARNING Risk of skidding when driving with ESP ®
deactivated
ESP ®
does not act tostabilise theve hicle. The availability of fu rther driving saf ety sy stems is also limi ted. #
Drive on carefull y. #
Deactivate ESP ®
only for as long as the situation requ ires.
If ESP ®
cannot be activated, ESP ®
is malfunctioning. #
Have ESP ®
ch ecked immediately at a quali/ed specialist workshop. #
Obser vethe no tes on deacti vating ESP ®
(/ page 186). 442
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Display messages and
warning/indicator lamps

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T
yr
yr e pr
e pr essur
essur e monit
e monit or
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Ty re pressure monitoring
system warning lamp 0ashes *The
yellow tyre pressure monitor warning lamp (pressure loss/malfunction) 0ashes for appr oximately one minute and
th en remains lit.
The tyre pressure monitor is malfunctioning. &
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WARNING
ARNING There is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
Ty res with insu1cient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring system checked at a quali/ed specialist workshop. h
Ty re pressure monitoring
system warning lamp lights
up *T
he yellow tyre pressure monitoring system warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring system has de tected tyre pressure loss in at least one of the tyres. &
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W ARNING
ARNING Risk of an accident due toinsu1cient tyre pressure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. Display messages and
warning/indicator lamps
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Stop theve hicle in accordance with the tra1c conditions. #
Check the tyre pressure and the tyres. 444
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Display messages and
warning/indicator lamps

A
A
ctiv
ctiv e Speed Limit Assist
e Speed Limit Assist
Display................................................... 200
Fu nction................................................ 200
A
A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 204
Ac tive Emer gency Stop Assist................ 205
Fu nction................................................ 203
System limits......................................... 203
A
A ctiv
ctiv e
eTr
Tra1c
a1c Jam Assist
Jam Assist
Ac tivating/deactivating.......................... 203
Fu nction................................................ 202
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 190
A
A dap
dap tiv
tive cr
e cr uise contr
uise contr ol
ol
see Active Distance Assist DISTRONIC
A
A dap
dap tiv
tive Highbeam Assist
e Highbeam Assist
Ac tivating/deactivating.......................... 131
Fu nction................................................ 130
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 131
Switching on/o..................................... 132
A
A dBlue
dBlue ®
®
Ad ditives................................................ 362
Capacity................................................ 363 No
tes..................................................... 174
Purit y.................................................... .362
To pping up............................................ .175
A
A dditional door lock
dditional door lock ....................................... 77
A
A dditiv
dditiv es
es
Ad Blue ®
................................................ .362
Engine oil............................................... 363
Fu el....................................................... 360
A
A dditiv
dditiv es (A
es (AdBlue
dBlue ®
®
)
)
see AdBlue ®
A
A dditiv
dditiv es (engine oil)
es (engine oil)
see Additives
A
A dditiv
dditiv es (fuel)
es (fuel)
see Fuel
ADS PL
ADS PL US dam
US dam ping syst
ping syst em
em
see AIR BODY CONTROL
ATer
ATer -sales
-sales ser
service
vice
see AS SYST PLUS
AIR BOD
AIR BOD Y C
Y CONTR
ONTR OL
OL
Setting................................................... 218
Suspension............................................ 217
Air conditioning menu
Air conditioning menu Calling up.............................................. 143 Air dis
Air distr
tribution
ibution
Setting................................................... 142
Setting (MBUX multimedia system)......... 144
Air fr Air fr eshener syst
eshener syst em
em
see Frag rance system
Air inlet
Air inlet
see Air-water duct
Air pr
Air pr essure
essure
see Tyre pressure
Air suspension
Air suspension
see AIR BODY CONTROL
Air v
Air v ents
ents
Ad justing (front)..................................... 151
Ad justing (rear)...................................... 151
Ad justing the AIRSCARF vents................ 152
Air v
Air v ents
ents
see Air vents
Air
Air -conditioning syst
-conditioning syst em
em
see Climate cont rol
Air
Air -r
-recir
ecir culation mode
culation mode.................................. 145
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 305 446
446
Index