MERCEDES-BENZ E CLASS COUPE 2023 Owners Manual

To reduce the tire pressure: press pressure
release button 1 next to manometer 2.When the tire pressure is correct, unscrew the
Nlling hose from the valve of the sealed tire.Screw the valve cap onto the valve of the
sealed tire.Pull the tire sealant bottle out of the tire inOa-
tion compressor.
The Nlling hose stays on the tire sealant bottle.Drive to the nearest qualiNed specialist work-
shop and have the tire, tire sealant bottle and
Nlling hose replaced there.Battery (vehicle)
Notes on the 12 V battery
&WARNING Risk of an accident due to work
carried out incorrectly on the battery
Work carried out incorrectly on the battery
can, for example, lead to a short circuit. This can restrict functions relevant for safety sys-
tems and impair the operating safety of your
vehicle.
You could lose control of the vehicle in the fol-
lowing situations in particular:
= When braking
= In the event of abrupt steering maneuvers
and/or when the vehicle\bs speed is not
adapted to the road conditions
In the event of a short circuit or a similar incident, contact a qualiNed specialist
workshop immediately.Do not drive on.Always have work on the battery carried
out at a qualiNed specialist workshop.=
Further information on ABS (  page 172)
= Further information on ESP n
( page 173)
For safety reasons, Mercedes-Benz recommends that you only use batteries which have been
approved for your vehicle by Mercedes-Benz.
All vehicles except vehicles with a lithium-ion bat- tery&WARNING Risk of explosion due to elec-
trostatic charge
Electrostatic charge can ignite the highly
explosive gas mixture in the battery.
To discharge any electrostatic charge
that may have built up, touch the metal
vehicle body before handling the battery.
The highly Oammable gas mixture is created while
the battery is charging and during starting assis-
tance.
&WARNING Danger of chemical burns from
the battery acid
Battery acid is caustic.
Breakdown assistance299

Avoid contact with the skin, eyes or
clothing.Do not lean over the battery.Do not inhale battery gases.Keep children away from the battery.Immediately rinse battery acid oM thor-
oughly with plenty of clean water and
seek medical attention immediately.
All vehicles
+ENVIRONMENTAL NOTE Environmental
damage due to improper disposal of bat- teries
Batteries contain pollutants. It is
illegal to dispose of them with the household rubbish.

Dispose of batteries in an
environmentally responsible manner.
Take discharged batteries to a qualiNed
specialist workshop or to a collection
point for used batteries.
If you have to disconnect the 12 V battery, con- tact a qualiNed specialist workshop.
Comply with safety notes and take protective
measures when handling batteries.
Risk of explosion if the 12 V battery is
used improperly.Fire, open Oames and smoking are pro-
hibited when handling the battery. Avoid
creating sparks.Electrolyte or battery acid is corrosive.
Avoid contact with the skin, eyes or cloth-
ing. Wear suitable protective clothing, in
particular gloves, an apron and a face
mask. Immediately rinse electrolyte oracid splashes oM with clean water. Consult
a doctor immediately.Do not place heavy objects on the surface of the battery or use the battery to sup-port a person in any way.Wear safety glasses.Keep children away.Observe this Operator\bs Manual.
Observe the following if you do not intend to use
the vehicle over an extended period of time:
= Not plug-in hybrid: switch to standby mode.
Activating/deactivating standby mode (  page 170)
= Alternatively: connect the battery to a battery
charger approved by Mercedes-Benz or con-
sult a qualiNed specialist workshop to discon-
nect the battery.
300Breakdown assistance

Notes on starting assistance and charging the 12
V battery
All vehicles
When charging the battery and during starting
assistance, always use the jump-start connection
point in the engine compartment.
*NOTE Damage to the battery due to over-
voltage
When charging using a battery charger without
a maximum charging voltage, the battery or the on-board electronics may be damaged.
Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.&WARNING Risk of explosion due to the
ignition of hydrogen gas
If there is a short circuit or sparks are created,
there is a danger of hydrogen gas igniting
when you charge the battery.
Make sure that the POSITIVE terminal of
a connected battery does not come into
contact with vehicle parts.Never place metal objects or tools on a
battery.When connecting and disconnecting the battery, always observe the sequence of
battery terminals described.During starting assistance, always take
care to connect only battery terminals of
identical polarity.During starting assistance, observe the sequence described for connecting and
disconnecting the jumper cables.Do not connect or disconnect the bat-
tery terminals with the engine running.&WARNING Risk of explosion due to a mix-
ture of explosive gases
A mixture of explosive gases can escape from
the battery during charging and jump starting.
Fire, open Oames, smoking and creating
sparks must be avoided.Make sure that there is suPcient ventila-
tion.Do not stand over the battery.&WARNING Risk of explosion from a frozen
battery
A discharged battery may freeze at tempera-
tures slightly above or below freezing point.
During starting assistance or battery charging,
battery gas can be released.
Always allow a battery to thaw before
charging it or performing starting assis-
tance.
If the indicator/warning lamps on the instrument cluster do not light up at low temperatures, it is
very likely that the discharged battery has frozen.
In this case you may neither jump-start the vehi- cle nor charge the battery.
The service life of a battery that has been thawedmay be dramatically shortened. The starting char-
Breakdown assistance301

acteristics may be impaired, especially at low
temperatures.
It is recommended that you have a thawed battery checked at a qualiNed specialist workshop.
All vehicles*NOTE Damage caused by numerous or
extended attempts to start the engine
Numerous or extended attempts to start the
engine may damage the catalytic converter
due to non-combusted fuel.
Avoid numerous and extended attempts
to start the engine.
Observe the following points during starting assis-
tance and when charging the battery:
= Only use undamaged jumper cables/charging
cables with a suPcient cross-section and
insulated terminal clamps.
= Non-insulated parts of the terminal clamps
must not come into contact with other metal
parts while the jumper cables/charging cables
are connected to the battery/jump-start con-
nection point.
= The jumper cables/charging cables must not
come into contact with any parts that may move when the engine is running.
= Always make sure that neither you nor the bat-
tery is electrostatically charged.
= Keep away from Nre and naked Oames.
= Do not lean over the battery.
Observe the additional following points when
charging the battery:
= Only use battery chargers tested and
approved for Mercedes-Benz.
= Read the battery charger\bs operating instruc-
tions before charging the battery.
Observe the following additional points during
starting assistance:
= Starting assistance may only be provided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
= The vehicles must not touch.= Vehicles with a gasoline engine: jump-start the
vehicle only when the engine and exhaust sys- tem are cold.
Starting assistance and charging the 12 V battery
Requirements: = The vehicle is secured with the electric park-
ing brake.
= Vehicles with automatic transmission: the
transmission is in position ].
= The vehicle and all electrical consumers are
switched oM.
= The hood is open.
302Breakdown assistance

Example: engine compartment
Slide cover 1 of POSITIVE contact 2 on the
jump-starting connection point in the direction
of the arrow.Connect POSITIVE contact 2 on your vehicle
to the positive terminal of the donor battery using the jumper cable/charging cable.Always begin with POSITIVE contact 2 on
your own vehicle.During starting assistance: start the engine of
the donor vehicle and leave it running at idle
speed.Connect the negative terminal of the donor
battery and ground point 3 of your own vehi-
cle by using the jumper cable/charging cable.
Begin with the donor battery.During starting assistance: start the engine of
your own vehicle.During the charging process: start the charg-
ing process.During starting assistance: leave the engines
running for several minutes.During starting assistance: before disconnect-
ing the jumper cable, switch on an electrical consumer on your own vehicle, e.g. the rear
window defroster or lighting.
When the starting assistance/charging process is
complete, perform the following steps:
First, remove the jumper cable/charging cable
from ground point 3 and the negative termi-
nal of the donor battery, then POSITIVE con-
tact 2 and the positive terminal of the donor
battery. Begin each time with the contacts on
your own vehicle.Aser removing the jumper cable/charging
cable, close cover 1 of POSITIVE contact
2 .
Further information can be obtained at a qualiNed
specialist workshop.
Replacing the 12 V battery
Observe the notes on the 12 V battery (  page 299).
Mercedes-Benz recommends that you have the
12 V battery replaced at a qualiNed specialist
workshop, e.g. at an authorized Mercedes-Benz Center.
Breakdown assistance303

Observe the following notes if you want to replacethe battery yourself:
= Always replace a faulty battery with a battery
which meets the speciNc vehicle require-
ments.
The vehicle is equipped with a battery featur-
ing AGM technology (Absorbent Glass Mat) or
a lithium-ion battery. Full vehicle functionality
is only guaranteed with an AGM battery or lith- ium-ion battery. For safety reasons, Mercedes-Benz recommends that you only use batteries
that have been tested and approved for your vehicle by Mercedes-Benz.
= Transfer detachable parts, such as vent hoses,
elbow Nttings or terminal covers from the bat-
tery being replaced.
= Make sure that the vent hose is always con-
nected to the original opening on the battery
side.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
= Make sure that detachable parts are recon-
nected in the same way.Tow starting or towing away
Permitted towing methods
*NOTE Damage from automatic braking
If one of the following functions is activated,
the vehicle will brake automatically in certain
situations:
= Active Brake Assist
= Active Distance Assist DISTRONIC
= HOLD function
= Active Parking Assist
To avoid damage to the vehicle, deactivate
these systems in the following or similar situa-
tions:
During towing.In a car wash.
Mercedes-Benz recommends transporting your vehicle in the case of a breakdown, rather than towing it away.
For towing with both axles on the ground, use a tow rope or tow rod. Do not use tow bar systems.
*NOTE Damage to the vehicle due to tow-
ing away incorrectlyObserve the instructions and notes on
towing away.
Vehicles with rear wheel drive
Permitted towing methodsBoth axles on
the groundYes, for a maximum of
31 miles (50 km) at 31 mph
(50 km/h)Front axle
raisedNoRear axle
raisedYes, if the steering wheel is
Nxed in the center position
with a steering wheel lock304Breakdown assistance

4MATIC vehiclesPermitted towing methodsBoth axles on
the groundYes, for a maximum of
31 miles (50 km) at 31 mph
(50 km/h)Front axle
raisedNoRear axle
raisedNo
Towing with a raised axle: towing should be per-
formed by a towing company.
Towing the vehicle with both axles on the ground
Observe the notes on the permitted towing
methods.Make sure that the battery is connected and
charged.
Observe the following points when the battery is
discharged:
= the vehicle cannot be started.
=the electric parking brake cannot be released
or applied
= Vehicles with automatic transmission: the
transmission cannot be shised to position \\
or ] .\bVehicles with automatic transmission: if the
transmission cannot be shised to position \\
or if the display does not show anything,
transport the vehicle (  page 306). A towing
vehicle with lising equipment is required for
vehicle transportation.*NOTE Damage due to towing away at
excessively high speeds or over long dis-
tances
The drivetrain could be damaged when towing
at excessively high speeds or over long distan-
ces.
A towing speed of 30 mph (50 km/h)
must not be exceeded.A towing distance of 30 miles (50 km)
must not be exceeded.&WARNING Risk of accident when towing a
vehicle which is too heavy
If the vehicle to be tow-started or towed away
is heavier than the permissible gross mass of
your vehicle, the following situations can
occur:
= The towing eye may become detached.
= The vehicle/trailer combination may
swerve or rollover.
Before tow-starting or towing away,
check if the vehicle to be tow-started or
towed away exceeds the permissible
gross mass.If a vehicle has to be tow-started or towed away, its permissible gross mass must not exceed thepermissible gross mass of the towing vehicle.Information on the permissible gross mass of
the vehicle can be found on the vehicle identi-
Ncation plate ( page 346).Vehicles with automatic transmission: do not
open the driver\bs door or front passengerBreakdown assistance305

door; the transmission otherwise automati-
cally shiss to position ].Install the towing eye (  page 308).Fasten the towing device.*NOTE Damage due to incorrect connec-
tion of the tow barOnly connect the tow rope or tow bar to
the towing eyes.Deactivate the automatic locking mechanism .Do not activate the HOLD function.Deactivate tow-away alarm (  page 87).Deactivate Active Brake Assist (  page 195).Vehicles with automatic transmission: shis to
position \\.Release the electric parking brake.&WARNING Risk of accident due to limited
safety-related functions during the towing
process
Safety-related functions are limited or no lon-
ger available in the following situations:
= The vehicle is switched oM.
= The brake system or power steering sys-
tem is malfunctioning.
= The energy supply or the on-board electri-
cal system is malfunctioning.
When your vehicle is towed away, signiNcantly
more eMort may be required to steer and
brake than is normally required.
Use a tow bar.Make sure that the steering wheel can
move freely before towing the vehicle
away.*NOTE Damage due to excessive tractive
power
If you pull away sharply, the tractive power
may be too high and the vehicles could be
damaged.
Pull away slowly and smoothly.
Loading the vehicle for transport
Observe the notes on towing away (  page 305).Connect the towing device to the towing eye
in order to load the vehicle.Vehicles with automatic transmission: shis the
automatic transmission to position \\.\bVehicles with automatic transmission: the
automatic transmission may be locked in posi- tion ] in the event of damage to the electri-
cal system. To shis to \\, provide the on-
board electrical system with power
(  page 302).Load the vehicle onto the transporter.306Breakdown assistance

Vehicles with automatic transmission: shis the
automatic transmission to position ].Use the electric parking brake to secure the
vehicle against rolling away.Only secure the vehicle by the wheels.
Vehicles with ADS PLUS (Adaptive Damping Sys- tem PLUS)
&WARNING Risk of an accident when trans-
porting vehicles with Adaptive Damping
System PLUS
When transporting vehicles with Adaptive Damping System PLUS, the vehicle/trailer
combination may begin to rock and start to
skid.
Load the vehicle correctly onto the transporter.Secure the vehicle on all four wheels
with suitable tensioning straps.Do not exceed the maximum permissible
speed of 35 mph (60 km/h) when trans-
porting.*NOTE Damage to the vehicle from secur-
ing it incorrectlyAser loading, the vehicle must be
secured on all four wheels. Otherwise,
the vehicle could be damaged.A minimum distance of 8 in (20 cm)
upwards and 4 in (10 cm) downwards
must be kept to the transport platform.Secure the vehicle on all four wheels aser
loading.
4MATIC vehicles/vehicles with automatic trans-
mission
Make sure that the front and rear axles come
to rest on the same transportation vehicle.*NOTE Damage to the drive train due to
incorrect positioning of the vehicleDo not position the vehicle above the
connection point of the transport vehi- cle.
Towing eye
Towing eye 1 is attached to the edge of the
trunk under the trunk Ooor.
Breakdown assistance307

Installing and removing the towing eyePress the mark on cover 1 inwards and
remove.Screw in the towing eye clockwise as far as it
will go and tighten.Make sure that cover 1 engages in the
bumper when you remove the towing eye.*NOTE Damage to the vehicle due to incor-
rect use of the towing eye
When recovering the vehicle by towing it out
using the towing eye, the vehicle may be dam-
aged.
Use the towing eye only for towing or
unhooking the vehicle.Do not use the towing eye for towing out
during recovery.
Tow-starting the vehicle
Vehicles with automatic transmission
*NOTE Damage to the automatic transmis-
sion due to tow starting
The automatic transmission may be damaged
in the process of tow starting vehicles with
automatic transmission.
Vehicles with automatic transmission
must not be tow started.Vehicles with automatic transmissions must
not be tow-started.
Electrical fuses
Notes on electrical fuses
&WARNING Risk of accident and injury due
to overloaded lines
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher amper-
age, the electric line could be overloaded.
This could result in a Nre.
Always replace faulty fuses with speci-
Ned new fuses containing the correct
amperage.*NOTE Damage due to incorrect fuses
Using incorrect fuses can result in damage to
electrical components or systems or their functions being considerably restricted.
308Breakdown assistance