MERCEDES-BENZ E CLASS COUPE 2023 Owners Manual

The vehicle can detect if certain wear parts need
to be replaced or if malfunctions have occurred in
vehicle systems. If the Telediagnosis service is activated, relevant data is automatically transmit-
ted to the manufacturer. If fault conditions are
detected by the vehicle system self-diagnosis, the system transmits recommendations for action to
the Mercedes-Benz customer center depending on the fault detected. The customer center trans-
mits the data to the service partner that you have entered on the Mercedes me website at: http://
www.mercedes.me.
For selected faults, the notiNcation that a mal-
function has been detected may appear in the multimedia system with a request to contact the
Mercedes-Benz customer center. From this mes- sage, a call can be made directly to the customercenter for assistance.\bThe transmission of a notiNcation to the multi-
media system depends on the country, vehi- cle model and equipment and requires a fast
data connection, over which the service pro-
vider has no inOuence.\bReliable fault detection is subject to technical
limitations. Therefore, only a limited selectionof faults can be detected and recommenda-tions for action transmitted to the customer
center and the service partners. Mercedes- Benz AG is continuously working on theexpansion of this service. The fault detection
depends on the country, vehicle model and equipment.
Data transferred when using Telediagnostics
When the service is activated, relevant data is
automatically transferred to determine the
required scope of maintenance as well as mal-
function detection and malfunction rectiNcation.
Details on data transfer can be found in the data protection information for the Mercedes me con-
nect services. These can be found at: http://
www.mercedes.me under "My Mercedes me
account", "Terms of use".
\bThe scope of the data transmitted depends on
the vehicle model and equipment. For techni-
cal reasons, not all data is available at all
times.Engine compartment
Opening and closing the hood
&WARNING Risk of accident due to driving
with the hood unlocked
The hood may open and block your view.
Never release the hood when driving.Before every trip, ensure that the hood is
locked.&WARNING Risk of accident and injury
when opening and closing the hood
The hood may suddenly drop into the end position.
There is a risk of injury for anyone in the
hood\bs range of movement.
Do not open or close the hood if there is a person in the hood\bs range of move-
ment.Maintenance and care279

&WARNING Risk of burns when opening the
hood
If you open the hood in the event of an over- heated engine or Nre in the engine compart-
ment, the following situations may occur:
= You may come into contact with hot gases.
= You may come into contact with other
escaping hot operating Ouids.
Before opening the hood, allow the
engine to cool down.In the event of a Nre in the engine com-
partment, keep the hood closed and call
the Nre service.&WARNING Risk of injury due to moving
parts
Components in the engine compartment may continue to run or start unexpectedly even
when the drive system is switched oM.
Observe the following if you must open the
hood:
Switch oM the vehicle.Never touch the danger zones surround-
ing moving components, e.g. the rotation
area of the fan.Remove jewelery and watches.Keep items of clothing and hair away from moving parts.&WARNING Risk of injury from touching live
components
The ignition system and the fuel injection sys- tem operate with a high voltage. You could
receive an electric shock.
Never touch components of the ignition
system or fuel injection system when the vehicle is switched on.The live components include the following, for
example:
= Ignition coils
= Fuel injectors=Electric lines to the ignition coils and the fuel
injectors&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING Risk of injury from using the
windshield wipers when the hood is open
If the windshield wipers start moving when the
hood is open, you could be trapped by the wiper linkage.
Always switch oM the windshield wipers
and the vehicle Nrst if you need to open
the hood.280Maintenance and care

Opening the hoodTo release the hood, pull on handle 1.Push handle 2 of the hood catch upwards
and lis the hood until it opens automatically.
Closing the hood
Lower the hood to a height of around 8 in
(20 cm) and then allow it to fall, applying a lit-
tle force as you let it go.If the hood can still be lised slightly, open the
hood again and close it with a little more force
until it engages correctly.
Engine oil

q Checking the engine oil level using the on-
board computer
Requirements
= The engine has been warmed up.
= The vehicle is parked on a level surface.
= The engine is running at idle speed.
= The hood is closed.
The engine oil level is determined during driving.
Determining the engine oil level can take up to
30 minutes with a normal driving style and even longer with an active driving style.
Maintenance and care281

On-board computer:4 Service 5
Engine Oil Level
One of the following messages will appear on the instrument display:
= Measuring Engine Oil Level... : measurement
of the oil level is not yet possible.Repeat the request aser a maximum of
30 minutes\b driving.
= Engine Oil Level OK and the bar display for
indicating the oil level on the instrument dis-
play is green and is between "min" and "max": the oil level is correct.
= Engine Oil Level Add 1,1 qts. and the bar dis-
play for indicating the oil level on the instru- ment display is orange and is below "min":
Add 1.1 US qt (1 l) of engine oil.
= Reduce Engine Oil Level and the bar display
for indicating the oil level on the instrument display is orange and is above "max":
Drain oM any excess engine oil that has been
added. To do so, consult a qualiNed specialist
workshop.
= For Engine Oil Level Switch Ignition On
Switch on the vehicle to check the engine oil
level.
= Engine Oil Level System Inoperative : The oil
level sensor is defective or not connected.
Consult a qualiNed specialist workshop.
=
Engine Oil Level System Currently Unavail.
Close the hood.

qAdding engine oil
&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING Risk of Nre and injury from
engine oil
If engine oil comes into contact with hot com- ponent parts in the engine compartment, it
may ignite.
Make sure that no engine oil is spilled next to the Nller opening.Allow the engine to cool oM and thor-
oughly clean the engine oil from compo-
nent parts before starting the vehicle.*NOTE Engine damage caused by an incor-
rect oil Nlter, incorrect oil or additivesDo not use engine oils or oil Nlters which
do not correspond to the speciNcations
explicitly prescribed for the service inter- vals.Follow the instructions on the service
interval display for changing the engine
oil and observe the prescribed change
intervals.Do not use additives.282Maintenance and care

*NOTE Damage caused by reNlling too
much engine oil
Too much engine oil can damage the engine or
the catalytic converter.
Have excess engine oil removed at a
qualiNed specialist workshop.\bDepending on driving style, the vehicle con-
sumes up to 0.9 US qt (0.8 liters) of oil per 600 miles (1,000 km). The oil consumptionmay also be higher than this when the vehicle
is new or if you frequently drive at high engine
speeds.Turn cap 1 counter-clockwise and remove it.Add engine oil.Replace cap 1 and turn it clockwise until it
engages.Check the oil level again (  page 281).Checking the coolant level&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING Risk of scalding from hot cool-
ant
If you open the cap, you could be scalded.
Let the motor cool down before opening
the cap.When opening the cap, wear protective
gloves and safety glasses.Open the cap slowly to release pressure.Maintenance and care283

Park the vehicle on a level surface.Check the coolant temperature display on theInstrument Display.
The coolant temperature must be in the bot-
tom quarter of the temperature indicator.Slowly turn cap 1 counter-clockwise to
release overpressure.Continue turning cap 1 counter-clockwise
and remove it.
The coolant level is correct in the following cases:
= If the engine is cold, the coolant is up to
marker bar 2.
= If the engine is warm, the coolant is up to
0.6 in (1.5 cm) over marker bar 2.
If necessary, reNll with coolant that has been
approved for Mercedes-Benz.\bFurther information on coolant (  page 352)
Adding washer Ouid to the windshield washer sys-
tem
&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING !

Remove cap 1 by the tab.Add washer Ouid.\bFurther information about the windshield
washer Ouid ( page 352)Keeping the air/water duct freeKeep the area between the hood and the
windshield free of deposits, e.g. ice, snow or
leaves.
Cleaning and care
Information on washing the vehicle in a car wash
&WARNING Risk of accident due to
reduced braking eMect aser washing the
vehicle
The braking eMect is reduced aser washing
the vehicle.
Aser the vehicle has been washed, brake
carefully while paying attention to the
traPc conditions until the braking eMect
has been fully restored.*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.*NOTE Damage due to unsuitable car washBefore driving into a car wash make sure
that the car wash is suitable for the vehi-
cle dimensions.Maintenance and care285

Ensure there is suPcient ground clear-
ance between the underbody and the guide rails of the car wash.Ensure that the clearance width of the
car wash, in particular the width of the
guide rails, is suPcient.
To avoid damage to your vehicle when using a car
wash, ensure the following beforehand:
= Active Distance Assist DISTRONIC is deactiva-
ted.
= The HOLD function is switched oM.
= The 360° Camera or the rear view camera is
switched oM.
= The side windows and sliding sunroof are com-
pletely closed.
= The outside mirrors are folded in.
= The blower for the ventilation and heating is
switched oM.
= The windshield wiper switch is in position Z.
= The key is at a minimum distance of 10 s
(3 m) away from the vehicle. Otherwise, the
trunk lid could open unintentionally.
= For car washes with a conveyor system:
- Neutral \\ is engaged.
- If you would like to leave the vehicle while
it is being washed, make sure the key islocated in the vehicle. Park position ]
will otherwise be engaged automatically.\bIf, aser the car wash, you remove the wax
from the windshield and wiper rubbers, this
will prevent smearing and reduce wiper noise.
Information on using a power washer
&WARNING Risk of an accident when using
power washers with round-spray nozzles
The water jet can cause externally invisible
damage.
Components damaged in this way may unex-
pectedly fail.
Do not use a power washer with round- spray nozzles.Have damaged tires or chassis parts
replaced immediately.To avoid damage to your vehicle, observe the fol- lowing when using a power washer:
= The key is at a minimum distance of 10 s
(3 m) away from the vehicle. Otherwise, the
trunk lid could open unintentionally.
= Maintain a distance of at least 11.8 in (30 cm)
to the vehicle.
= Vehicles with decorative Nlms: parts of your
vehicle are covered with a decorative Nlm.
Maintain a distance of at least 27.6 in (70 cm) between the Nlm-covered parts of the vehicle
and the nozzle of the power washer. Move the power washer nozzle around while cleaning.
The water temperature of the power washer
must not exceed 140°F (60°C).
= Observe the information on the correct dis-
tance in the equipment manufacturer\bs oper-
ating instructions.
= Do not direct the nozzle of the power washer
directly at sensitive parts, e.g. tires, gaps,
electrical components, batteries, illuminants or louvers.286Maintenance and care

Washing the vehicle by hand*NOTE Engine damage due to water ingressTake care not to point the water jet
directly towards the air inlet grille below the hood.
Observe the relevant legal requirements (e.g. in
some countries, washing by hand is permitted
only in specially designated wash bays).
Use a mild cleaning agent (e.g. car shampoo).Wash the vehicle with lukewarm water using a
sos car sponge. When doing so, do not
expose the vehicle to direct sunlight.Carefully hose the vehicle oM with water and
dry using a chamois.\bObserve the notes on the care of car parts
(  page 288).
Notes on paintwork/matt Nnish paintwork care
To avoid damaging the paintwork and interfering
with the driving assistance systems, please
observe the following notes:
Paint
= Insect remains: soak with insect remover and
rinse oM the treated areas aserwards.
= Bird droppings: soak with water and rinse oM
aserwards.
= Tree resin, oils, fuels and greases: remove by
rubbing gently with a cloth soaked in petro- leum ether or lighter Ouid.
= Coolant and brake Ouid: remove with a damp
cloth and clean water.
= Tar stains: use tar remover.
= Wax: use silicone remover.
= Do not attach stickers, Nlms or similar materi-
als. Have Nlm attached to the bumper only at
a qualiNed specialist workshop.
= Remove dirt immediately, where possible.
Matt Nnish
= Use only care products approved for
Mercedes-Benz.
= Do not attach stickers, Nlms or similar materi-
als. Have Nlm attached to the bumper only at
a qualiNed specialist workshop.=
Do not polish the vehicle and alloy wheels.
= Use only car washes that correspond to the
latest engineering standards.
= Do not use any car wash program with a Nnal
hot wax treatment.
= Do not use paint cleaners, buPng or polishing
products or gloss preservers, e.g. wax.
In the event of paintwork damage:
= Always have paintwork repairs carried out at a
qualiNed specialist workshop.
= Make sure the radar sensors function
(  page 171).
Notes on cleaning decorative Nlms
Observe the "Notes on paintwork/matte Nnish
paintwork care" (  page 287). They also apply to
matte decorative Nlms.
Observe the notes on cleaning decorative Nlms to
avoid damage.
Cleaning
= For cleaning, use plenty of water and a mild
cleaning agent without additives or abrasive
Maintenance and care287

substances (e.g. a car shampoo approved for
Mercedes-Benz).
= Remove dirt as soon as possible. Avoid rub-
bing too hard in order not to damage the dec- orative Nlm irreparably.
= If there is dirt on the Nnish or if the decorative
Nlm is dull: use the paint cleaner recommen-
ded and approved for Mercedes-Benz.
= Insect remains: soak with insect remover and
rinse oM the treated areas aserwards.
= Bird droppings: soak with water and rinse oM
aserwards.
= To prevent water stains, dry a Nlm-wrapped
vehicle with a sos, absorbent cloth aser every
car wash.
Avoiding damage to the decorative Nlm
= The service life and color of decorative Nlms
are impaired by:
- Sunlight
- Temperature (e.g. hot air blower)
- Weather conditions
- Stone chippings and dirt-Chemical cleaning agents
- Oily products
= Do not use polish on matte decorative Nlm.
Polishing will have the eMect of shining the
Nlm-wrapped surface.
= Do not treat matte or structured decorative
Nlms with wax. Permanent stains may occur.
Scratches, corrosive deposits, areas aMected by
corrosion and damage caused by incorrect care
cannot always be completely repaired. In this case, contact a qualiNed specialist workshop.
You can obtain more information on care and
cleaning agents from the manufacturer.
In the case of Nlm-wrapped surfaces, visual diMer-
ences may occur between the surfaces that were
not protected by a decorative Nlm aser a decora-
tive Nlm has been removed.\bHave work or repairs to decorative Nlms car-
ried out at a qualiNed specialist workshop
(e.g. at an authorized Mercedes-Benz Center).Notes on care of car parts&WARNING Risk of entrapment if the wind-
shield wipers are switched on while the
windshield is being cleaned
If the windshield wipers are set in motion
while you are cleaning the windshield or wiper
blades, you can be trapped by the wiper arm.
Always switch oM the windshield wipers
and the vehicle before cleaning the wind-
shield or wiper blades.
To avoid damage to the vehicle, observe the notes
on cleaning and care of the following car parts:
Wheels and rims
= Use water and acid-free alloy wheel cleaners.
= Do not use acidic alloy wheel cleaners to
remove brake dust. This could damage wheel
bolts and brake components.
= To avoid corrosion of the brake disks and
brakepads, drive the vehicle for a few minutes
aser cleaning before parking it. The brake
disks and brakepads will warm up and dry out.
288Maintenance and care