2021 MERCEDES-BENZ E-CLASS COUPE warning

K
K
e
ey
y Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Á
Replace key *H
aveth eke yre placed. #
Consult a quali/ed specialist workshop.
Á
Change key batteries *T
hekey battery is dischar ged. #
Replace the battery (/ page 75).
Á Key not detected (white dis-
play message) *T
hekey is cur rently unde tected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot for starting with theke y (/ page 156). Display messages and
warning/indicator lamps
375
375

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
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Solutions
Á
Key not detected (red dis-
play message) *T
hekey cann otbe de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you switch o. theve hicle:
R You can no longer start theve hicle.
R You cannot centrally lock theve hicle. #
Ensu rethat theke y is in theve hicle.
If th eke y de tection function has a malfunction due toa st rong radio signal source: #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Place theke y in the slot for starting the engine with theke y (/ page 156).
Á Key being initialised Please
wait *T
hevehicle is processing in order to teach in the new key. #
Wait until processing is comple te.
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 156). 376 376
Display messages and
warning/indicator lamps

Lights
Lights
Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
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 333).
:
Automatic driving lights
inoperative *T
he light sensor for automatic driving lights is malfunctioning. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
377
377

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
:
Active Light System inoper-
ative *T
he active headlamps are malfunctioning. #
Consult a quali/ed specialist workshop.
:
Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
:
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
:
Intelligent Light System
inoperative *T
he Intelli gent Light System is malfunctioning. The lighting system continues tofunction proper lywithout the functions
of the Intelligent Light System. #
Consult a quali/ed specialist workshop. 378 378
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
Adaptive Highbeam Assist
currently unavailable See
Owner's Manual *A
daptive Highbeam Assist is tempo rarilyuna vailable.
The system limits ha vebeen reached (/ page 131).
Once the cause of the problem is no longer present, the system will be available again. The Adaptive Highbeam
Assist available again displaymessage will appear. #
Drive on #
Operate the high beam manually until Adaptive High Beam Assist is available again.
Adaptive Highbeam Assist
inoperative *A
daptive Highbeam Assist is malfunctioning. #
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. #
Until then, operate the high beam manuall y.
Adaptive Highbeam Assist
Plus currently unavailable
See Owner's Manual *A
daptive Highbeam Assist Plus is tempo rarilyuna vailable.
The system limits ha vebeen reached (/ page 132).
Once the cause of the problem is no longer present, the system will be available again. The Adaptive Highbeam
Assist Plus available again displaymessage will appear. #
Drive on #
Operate the high beam manually until Adaptive High Beam Assist Plus is available again. Displ
aymessages and warning/indicator lamps
379
379

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Adaptive Highbeam Assist
Plus inoperative *A
daptive Highbeam Assist Plus is malfunctioning. #
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. #
Until then, operate the high beam manuall y.
Hazard warning lamps mal-
functioning *T
he hazard warning lamp switch is malfunctioning. #
Consult a quali/ed specialist workshop. Climat Climat
e contr
e contr ol
ol Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
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Solutions
&
inoperative See Owner's
Man. *T
he stationary heater is temp orarily malfunctioning. #
When theve hicle is stationary on a le vel sur face and the engine has cooled down, make up tofour attem ptsto
switch on the stationary heater, waiting se veral minutes between each attem pt. #
Ifth e stationary heater does not switch on, consult a quali/ed specialist workshop. 380 380
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
&
inoperative Battery low *T
he on-board elect rical system voltage is too lo w.
The stationa ryheater has switched itself o.. #
Drive an extended distance until the battery has reached a su1cient charge leve l again.
&
inoperative Refuel vehicle *T
here is too little fuel in the fuel tank. The stationary hea ter cannot be switched on. #
Refuel theve hicle. V
V
ehicle
ehicle Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
d
Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
Get out of theve hicle, secure it against rolling away and take theke y with you. #
Ifyo u do not lea vetheve hicle, switch o. the electrical consumers, e.g. the seat heating. Otherwise, the 12‑V bat-
te ry may dischar geand starting the engine may be possible only with the help of a second battery (jump start). Display messages and
warning/indicator lamps
381 381

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ï
Check trailer hitch
lock (white display message) *T
he trailer hitch is not operational during a jou rney with a trailer. &
W WARNING
ARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Initiate a new swivel mo vement (/ page 241). #
When the display message disappears, couple up the trailer and drive on.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe unloc ked
ball nec k. #
Consult a quali/ed specialist workshop.
*W hen theve hicle is stationary with a coupled trailer, the trailer hitch is not operational. #
Uncouple the coupled trailer and secure it against rolling away. #
If t
If t he ball nec
he ball nec k has been f
k has been f olded in:
olded in:unlockthe ball neck (/ page 241). #
Swivel the ball neck into the end position manually and let it engage. #
If t
If t he ball nec
he ball nec k has been f
k has been f olded out
olded out::unlock the ball neck (/ page 241).382
382
Display messages and
warning/indicator lamps