tyre pressure MERCEDES-BENZ E-CLASS CABRIOLET 2021 Owner's Guide

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Active Distance Assist
available again *A
ctive Dis tance Assist DISTRONIC is ope rational again. #
Switch on Active Distance Assist DISTRONIC (/ page 198).
ð
Maximum speed exceeded *Y
ou ha veexceeded the maximum permissible speed (for cer tain countries only). #
Drive more slo wly.
Speed limit (winter tyres)
XXX km/h *Y
ou ha vereached the maximum permissible stored speed for winter tyres. It is not possible toexceed this speed.
Active Steering Assist cur-
rently unavailable See Own-
er's Manual *A
ctive Steering Assist is temp orarily una vailable.
The ambient conditions are outside the system limits (/ page 203).
As soon as the ambient conditions are within the system limits, the system will become available again. #
Drive on #
Check the tyre pressure if necessar y.
Active Steering Assist inop-
erative *A
ctive Steering Assist is malfunctioning. Active Distance Assist DISTRONIC remains available. #
Drive on
or #
Stop theve hicle in accordance with the tra1c conditions and restart theve hicle. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop. 402 402
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Connect a suitable charge r appr ovedfo r Mercedes-Benz with su1cient charge output tothe jump-start connection
point of the 12 V battery (/ page 326).
The 48 V battery is charge d via thevo ltage con verter in theve hicle.
Motor can be started again *The 48 V battery has been charge d automatically via thevo ltage con verter. #
Start theve hicle and drive for a while tocharge the 12 V battery and the 48 V batter y. T
T
yr
yr e pr
e pr essur
essur e monit
e monit or
or Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being received. The tyre pressure monitoring system is temp orarily una vailable.
The tyre pressure monitoring system will restart au tomatically as soon as the cause has been recti/ed. #
Drive on.
Tyre press. monitor inoper-
ative *T
he tyre pressure moni toring system is malfunctioning. &
W WARNI NG
ARNI NGThere 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. Displ
aymessages and warning/indicator lamps
419
419

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Tyre press. monitor inoper-
ative No wheel sensors *T
he wheels /tted do not ha vesuitable tyre pressure senso rs. The tyre pressure monitoring system is deactivated. #
Fit wheels with suitable tyre pressure sensors.
h
Wheel sensor(s) missing *T
here is no signal from the tyre pressure sensor of one or more wheels. No pressure value is displa yedfo rth e a.ected
tyre. #
Have thefa ulty tyre pressure sensor replaced at a quali/ed specialist workshop.
h
Check tyre(s) *T
he tyre pressure in one or more tyres has dropped signi/cantl y.
The wheel position is displa yed. A warning tone also sounds. &
W WARNI NG
ARNI NGRisk 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. #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyre pressure (/ page 337) andthe tyres. 420
420
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h
Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the di.erence in tyre pressure between the individual
wheels is toogr eat. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitoring system (/ page 340).
h Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenl y.The wheel position will be displa yed. &
W
WARNING
ARNING Risk of an accident from driving with a 0at tyre
R The tyres can overheat and be damaged.
R The driving characteristics as well as the steering and braking characteristics may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive with a 0at tyre. #
Do not exceed the maximum permissible driving distance in emer gency mode and the maximum permissible
speed with a 0at MOExtended tyre. #
Obser vethe no tes on 0at tyres. No
tes in theev ent of a 0at tyre (/ page 317). #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyres. Display messages and
warning/indicator lamps
421
421

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Tyre(s) overheated *At least one tyre is overheating. The a.ected tyres are displa yed in red. At temp eratures close tothe limit value, the
tyres are displa yed in yello w. &
W
WARNI NG
ARNI NGRisk of an accident from driving with overheated tyres
Overheated tyres can burst. #
Reduce speed so that the tyres cool down. Reduce speed
*At least one tyre is overheating. The a.ected tyres are displa yed in red. At temp eratures close tothe limit value, the
tyres are displa yed in yello w. &
W
WARNI NG
ARNI NGRisk of an accident from driving with overheated tyres
Overheated tyres can burst. #
Reduce speed so that the tyres cool down. T
T
yr
yr e pr
e pr essur
essur e loss w
e loss w ar
arning syst
ning syst em
em Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Tyre pressure Check tyres *The tyre pressure loss warning system has de tected a signi/cant loss of pressure. 422
422
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions &
W
WARNING
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. #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyre pressure (/ page 337) andthe tyres. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning system (/ page 340).
Check tyre pressures then
restart Run Flat Indicator *T
he tyre pressure loss warning system generated a display messa geand has not been restar ted since. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning system (/ page 340).
Run Flat Indicator inopera-
tive *T
he tyre pressure loss warning system is malfunctioning. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
423 423

Ins
Ins
tr
trument displ ay
ument display Depending on
the display setting, the positions of
th e indicator lamps on the inst rument display may
di.er from theex ample shown.
Indicat
Indicat or and w
or and w ar
arning lam
ning lam ps:
ps:
6 Restraint system (/ page 431)
ü Seat belt (/ page 431)
ï Trailer hitch (/ page 432)
Ù Powe r steering (/ page 432)
ÿ Coolanttemp erature (/ page 433)
; Engine diagnostics (/ page 433)
% V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: preglow#
Electricalfault (/ page 433)
8 Reser vefuel wi thfuel /ller 0ap loca-
tion indicator (/ page 433)
! Electric parking brake (red)
(/page 437)
! Electric parking brake (yellow)
(/page 437)
J Brakes (yellow) (/ page 437)
J Brakes (red) (/ page 437)
L Distancewarning (/ page 439)
Ó Active Brake Assist (/ page 439)
ê Active Brake Assist (/ page 439)
ä AIR BODYCONTROL (/ page 439)
ä DYNAMIC BODY CONTROL
(/ page 439)
! ABS (/page 440)
÷ ESP®
(/ page 440)
å ESP®
OFF (/ page 440)
h Tyre pressure monitoring system
(/ page 443) T
Standing lights (/ page 125)
L Low beam (/ page 125)
K High beam (/ page 127)
#! Turn signal lights (/ page 127)
R Rear fog light (/ page 125) 430 430
Display message
s andwarning/indicator lamps

T
T
yr
yr e pr
e pr essur
essur e monit
e monit or
or W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h
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. &
W
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. &
W
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
443
443

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyre pressure and the tyres. 444
444
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
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