engine MERCEDES-BENZ E-CLASS CABRIOLET 2022 Repair Manual

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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
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&
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. Displ
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383 383

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&
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
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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). 384 384
Display messages and
warning/indicator lamps

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Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine bonnet is loc ked. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Close the bonnet.
N *T
he boot lid is open. &
D
DAN
AN GER
GER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter theve hicle
interior if the boot lid is open when the engine is running, especially if theve hicle is in motion. #
Always switch o. the engine before opening the boot lid. #
Never drive with the boot lid open. #
Close the boot lid.
_ Front left seat backrest not
locked (examp le) *T
he seat backrest of the cor responding front seat is not engaged. #
Foldthe seat backrest back until it engages. 388 388
Display messages and
warning/indicator lamps

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¥
Top up washer fluid *T
hewasher 0uid le vel in thewa sher 0uid reser voir has dropped below the minimum. #
Top up thewa sher 0uid (/ page 306).
Wiper malfunctioning *The windscreen wiper is malfunctioning. #
Restart theve hicle.
If th e display message still appears: #
Consult a quali/ed specialist workshop. Engine
Engine
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To switch off the engine,
press the Start/Stop but-
ton for at least 3 seconds
or 3 times. *Y
ou ha vepressed the start/s top button while theve hicle is in motion. #
Information about switching o. theve hicle while driving (/ page 156).
Cannot start engine See
Owner's Manual *T
hevehicle cann otbe star ted. #
Switch theve hicle o. and switch it back on Displ
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389

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Ifth e display message still appears, consult a quali/ed specialist workshop.
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N
N O
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 305). #
Have the engine cooling system checked at a quali/ed specialist workshop.
ÿ
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. 390
390
Display messages and
warning/indicator lamps

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Wait until the engine has cooled down. #
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 *T
here is a malfunction in the engine cooling system. #
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.
8
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
! Clean the fuel filter *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the fuel /lter is dirty or thewa ter in the fuel /lter needs tobe drained. #
Consult a quali/ed specialist workshop. Displ
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391

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Replace air cleaner *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the engine air /lter is dirty and must be replaced. #
Consult a quali/ed specialist workshop. T
T
r
ransmission
ansmission Displa
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Only select Park (P) when
vehicle is stationary *I
t is possible toselect the park position jonly if theve hicle is stationar y. #
Depress the brake pedal tostop. #
ShiT the transmission topark position jwhen theve hicle is stationar y.
Apply brake to deselect
Park (P) position *Y
ou ha veattem pted toshiT the transmission out of park position jand into ano ther transmission position. #
Depress the brake pedal. #
Select transmission position h,kor neutral i.
To shift out of P or N,
depress brake and start
engine *Y
ou ha veattem pted toshiT the transmission out of park position jor neutral iand into ano ther transmission posi-
tion. #
Depress the brake pedal. #
Start theve hicle. 392 392
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For all other transmission positions, park theve hicle safel y. #
Consult a quali/ed specialist workshop.
Reversing not poss. Con-
sult workshop *T
he transmission is malfunctioning. It is not possible toselect transmission position k. #
Consult a quali/ed specialist workshop.
Transmission Malfunction
Stop *T
he transmission is malfunctioning. The transmission shiTs toneutral iautomaticall y. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Depress the brake pedal. #
Engage park position j. #
Consult a quali/ed specialist workshop.
Stop vehicle Leave engine
running Wait Transmission
cooling *T
he transmission is overheating. Pulling away may be temp orarily impaired or not possible. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Leavethe engine running. #
Wait until the display message disappears before pulling away.
Auxiliary battery malfunc-
tion (white displ aymessage) *T
he auxiliary battery forth e automatic transmission is no longer being charge d. #
Consult a quali/ed specialist workshop. #
Until then, alw ays select park position jmanually before you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake. 394 394
Display messages and
warning/indicator lamps

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* NO
NOTE
TEPossible engine damage if you continue driving #
Do not continue driving under any circumstances. #
Consult a quali/ed speciali stwo rkshop. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. #
Consult a quali/ed specialist workshop.
#
Stop vehicle See Owner's
Manual *T
he 12 V battery is no lon ger being charge d and the state of charge istoo lo w.
* N
N O OTE
TE Possible engine damage if you continue driving #
Do not continue driving under any circumstances. #
Consult a quali/ed speciali stwo rkshop. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Switch o. theve hicle. #
Consult a quali/ed specialist workshop. 418
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#
Stop vehicle Leave engine
running *T
he 12 V battery charge leve l is too lo w. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Leavethe engine running. #
Ifth e display message disappears: drive on. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop.
Û Battery overheated Stop,
everybody out! Outdoors if
possible *T
he 48 V battery is overheating. There is a risk of /re. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
If possible, stop theve hicle in the open air and ensure that all vehicle occupants getout.
% Supporting vehicle functions may activate automaticall y,e.g. the air-recirculation mode as part of climate control. #
Do not continue driving. #
If smoke is present, lea vethe danger zone and call the /re service immediatel y. #
Consult a quali/ed specialist workshop even if there are no extern al signs of a /re.
Û
48 V battery See Owner's
Manual *T
he 48 V on-board elect rical system has function restrictions.
Comfort functions ma y berestric ted. #
Consult a quali/ed specialist workshop immediatel y. Display messages and
warning/indicator lamps
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