
1, 2, 3 ...
4ETS (Electronic Traction System) see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 190
4MATIC off-road system ...................190
12 V socket
see Socket (12 V)
230 V power socket .......................... 319
360° camera
Cleaning ......................................... 335
Display in the multimedia system .. 204
Function/notes ............................ .202 A
ABS (Anti-lock Braking System) Display message ............................ 250
Function/notes ................................ 68
Warning lamp ................................. 283
Accident
Automatic measures after an acci-
dent ................................................. 56
Activating media mode
General notes ................................ 303
Activating/deactivating air-recir-
culation mode ................................... .134
Activating/deactivating cooling
with air dehumidification ................. 130
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 241
Display message ............................ 268
Function/notes ............................ .213
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 242
Display message ............................ 268
Function/notes ............................ .216
Active light function ......................... 118
Active Light System
Display message ............................ 261
Active Parking Assist
Cancelling ...................................... 197
Detecting parking spaces .............. 194
Display message ............................ 269 Exiting a parking space .................. 197
Function/notes ............................
.194
Important safety notes .................. 194
Parking .......................................... 196
Towing a trailer .............................. 194
ADAPTIVE BRAKE ................................. 77
Adaptive Brake Assist
Function/notes ................................ 72
Adaptive brake lights .......................... 73
Adaptive Damping System
Function/notes ............................ .190
Adaptive Damping System (ADS) ..... 188
Adaptive Highbeam Assist
Display message ............................ 262
Function/notes ............................ .119
Switching on/off ........................... 119
Adaptive Highbeam Assist Plus
Display message ............................ 262
Function/notes ............................ .119
Switching on/off ........................... 120
AdBlue ®
Additive ......................................... 376
Display message ............................ 265
Displaying level and range ............. 240
Filling capacity ............................... 376
Important safety notes .................. 376
Low outside temperatures ............. 376
Purity ............................................. 376
Topping up ..................................... 164
Additional speedometer ................... 244
Additives (engine oil) ........................ 377
Address book
See also Digital Owner's Manual ... 292
Adjusting the headlamp range ......... 117
Adjusting the volume
Multimedia system ........................ 293
AIR BODY CONTROL
Display message ............................ 266
Function/notes ............................ .187
Lowering the rear of the vehicle .... 189
Raising the rear of the vehicle ....... 189
Air conditioning
General notes ................................ 127
Air filter (white display message) .... 265
Air vents
Important safety notes .................. 141
Rear ............................................... 141 4
Index

ECO display
Function/notes ............................ .170
On-board computer ....................... 233
ECO start/stop function
Automatic engine start .................. 148
Automatic engine switch-off .......... 148
Climate control .............................. 129
Deactivating/activating ................. 149
General information ....................... 148
Important safety notes .................. 147
Introduction ................................... 147
Electromagnetic compatibility
Declaration of conformity ................ 28
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency
Automatic measures after an acci-
dent ................................................. 56
Emergency key
Unlocking the driver's door .............. 90
Emergency key element
Function/notes ................................ 84
General notes .................................. 84
Inserting .......................................... 85
Locking vehicle ................................ 90
Removing ......................................... 85
Emergency release
Driver's door ................................... .90
Emergency spare wheel
General notes ................................ 369
Important safety notes .................. 369
Removing ...................................... .370
Technical data ............................... 369
Emergency unlocking
Tailgate ............................................ 95
Vehicle ............................................. 90
Engine
Display message ............................ 263
ECO start/stop function ................ 147
Engine number ............................... 373
Jump-starting ................................. 348
Running irregularl y......................... 150
Starting (important safety notes )... 145
Starting problems .......................... 150
Starting the engine with the key .... 146
Starting with the Start/Stop but-
ton ................................................. 146
Stopping ........................................ 168 Tow-starting (vehicle) ..................... 353
Warning lamp (engine diagnos-
tics) ............................................... 286
Engine electronics
Notes ............................................. 371
Problem (fault) ............................... 150
Engine oil
Additives ........................................ 377
Checking the oil level ..................... 327
Checking the oil level using the
dipstick .......................................... 327
Display message ............................ 265
Filling capacity ............................... 377
General notes ................................ 377
Notes about oil grade s................... 377
Notes on oil level/consumption .... 327
Temperature (on-board computer, Mercedes-AMG vehicles) ............... 245
Topping up ..................................... 328
Entering an address
See also Digital Owner's Manua l... 292
Environmental protection
Returning an end-of-life vehicle ....... 26
ESP ®
(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 246
Characteristics ................................. 74
Crosswind Assist ............................. 76
Deactivating/activating (button
in Mercedes-AMG vehicles) ............. 75
Deactivating/activating (notes,
except Mercedes-AMG vehicles) ...... 74
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) ............... 240
Display message ............................ 250
Function/note s................................ 73
General notes .................................. 73
Important safety guidelines ............. 73
Trailer stabilisation .......................... 76
Warning lamp ................................. 283
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 73
Exhaust
see Exhaust pipe
Exhaust pipe
Cleaning ......................................... 335 Index
11

When the AdBlue
®
supply drops to a minimum,
the Refill AdBlue No start in ... mi
Refill AdBlue No start in ... mi
message is shown on the multifunction display.
When the Refill
Refill AdBlue
AdBlueNo
Nostart
start in
in...
...
mi
mi message is shown on the multifunction dis-
play, you can still drive the vehicle over the dis-
tance shown. If AdBlue ®
is not topped up, you
will subsequently be unable to start the
engine. If the Refill AdBlue Start not
Refill AdBlue Start not
possible
possible message appears on the multifunc-
tion display and the engine does not start, you
must top up AdBlue ®
.
X Add at least 3.5 l of AdBlue ®
.
X Switch on the ignition for at least 60 seconds.
X Start the engine.
i You can also have the AdBlue ®
tank refilled
at a qualified specialist workshop.
Before driving your vehicle outside Europe, have
the AdBlue ®
supply checked at a qualified spe-
cialist workshop.
Further information about BlueTEC exhaust gas
aftertreatment and about AdBlue ®
can
be obtained from any Mercedes-Benz Service
Centre.
Important safety notes AdBlue
®
is a water-soluble fluid for the exhaust
gas aftertreatment of diesel engines. It is:
R non-toxic
R colourless and odourless
R non-flammable
If you open the AdBlue ®
tank, small amounts of
ammonia vapour may be released.
Ammonia vapours have a pungent odour and are
particularly irritating to the skin, mucous mem-
branes and eyes. You may experience a burning sensation in your eyes, nose and throat. You
may also experience coughing and watery eyes.
Do not inhale any ammonia vapours that may be
released. Fill the AdBlue ®
tank only in well-ven-
tilated areas.
Do not swallow AdBlue ®
or let it come into con-
tact with your skin, eyes or clothing. Keep
AdBlue ®
away from children. If you or others come into contact with AdBlue
®
,
observe the following:
R immediately rinse AdBlue ®
off your skin with
soap and water.
R if AdBlue ®
comes into contact with your eyes,
immediately rinse them thoroughly with clean water. Seek medical attention immediately.
R if AdBlue ®
is swallowed, immediately rinse
your mouth out thoroughly. Drink plenty of
water. Seek medical attention immediately.
R change immediately out of clothing that has
come into contact with AdBlue ®
.
! Only use AdBlue ®
in accordance with
ISO 22241. Do not mix any additives with
AdBlue ®
, and do not dilute AdBlue ®
with
water. This may destroy the BlueTEC exhaust
gas aftertreatment system.
! In order to fill the AdBlue ®
tank, the vehicle
must be parked on a level surface. The
AdBlue ®
tank can only be filled as intended
with the vehicle parked on a level surface.
Fluctuations in capacity will thus be avoided.
Filling a vehicle standing on an uneven sur-
face is not permitted. There is a danger of
overfilling, which can cause damage to Blue-
TEC exhaust gas aftertreatment components.
! Surfaces which have come into contact with
AdBlue ®
while refilling should be rinsed
immediately with water, or remove AdBlue ®
with a moist cloth and cold water. If AdBlue ®
has already crystallised, use a sponge and
cold water to clean the area. AdBlue ®
residue
crystallises after a certain amount of time and
soils the affected surfaces.
! AdBlue ®
is not a fuel additive and must not
be added to the fuel tank. If AdBlue ®
is added
to the fuel tank, this can lead to engine dam- age.
Have the AdBlue ®
tank refilled at a qualified
specialist workshop. However, you can also top
up the AdBlue ®
tank:
R at a filling station with an AdBlue ®
filling pump
R with AdBlue ®
refill bottles
R with an AdBlue ®
refill canister
When the pump nozzle switches off automati-
cally during filling at a filling pump, the AdBlue ®
tank has been completely filled. Do not fill the Refuelling
165Driving and parking Z

X
Slowly slide oil dipstick :into the guide tube
to the stop and take it out again after approx- imately three seconds.
If the level is between MIN mark =and MAX
mark ;, the oil level is correct.
X If the oil level has dropped to MIN mark =or
below, top up with 1.0 lof engine oil.
Topping up engine oil H
Environmental note
When topping up the oil, take care not to spill any. If oil enters the soil or waterways, it is
harmful to the environment.
! Use only engine oils and oil filters that are
approved for vehicles with a service system. A list of the engine oils and oil filters that have
been tested and approved in accordance with
Mercedes-Benz Specifications for Service
Products is available at any Mercedes-Benz
Service Centre.
The following cause engine failure or damage
to the exhaust system:
R Use of engine oils and oil filters that have
not been expressly approved for the service system
R Replacement of engine oil and oil filter after
the replacement interval specified by the
service system has expired
R Use of engine oil additives
! Do not add too much oil. Topping up with too
much engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off. Top up the engine oil (example) X
Turn cap :anti-clockwise and remove it.
X Top up the engine oil.
If the oil level is at or below the MIN mark on
the oil dipstick, top up with 1.0 l of engine oil.
X Replace cap :on the filler neck and turn
clockwise.
Make sure that the cap locks securely into
place.
X Check the oil level again with the oil dipstick
(Y page 327).
Further information on engine oil (Y page 377). Other service products
Important safety notes G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri- bed in the following. G
WARNING
There are moving components in the engine
compartment. Certain components may con-
tinue to move or suddenly move again even
after the ignition has been switched off, e.g.
the radiator fan. There is a risk of injury.
If you have to carry out work in the engine
compartment:
R switch off the ignition
R never touch the dangerous areas surround-
ing moving components, e.g. the rotation
area of the fan
R remove jewellery and watches
R keep items of clothing and hair, for exam-
ple, away from moving parts. G
WARNING
The cooling system is pressurised, particu-
larly when the engine is warm. If you open the 328
Engine compartmentMaintenance and care

Example: vehicle identification plate (vehi-
cles with a trailer tow hitch – all other coun- tries)
: Vehicle manufacturer
; EU type approval number (for certain coun-
tries only)
= VIN
? Maximum gross vehicle weight (kg)
A Maximum gross weight of vehicle combina-
tion (kg) (for certain countries only)
B Permissible front axle load (kg)
C Permissible rear axle load (kg)
D Paint code
i The data shown on the vehicle identification
plate are sample data. This data are different for every vehicle and may differ from the data
shown here. You can find the data applicable to your vehicle on the vehicle's identification
plate. Vehicle identification number (VIN)
X
Slide the right-hand front seat to its rearmost
position.
X Fold floor covering ;upwards.
VIN :is visible. The VIN can also be found on the vehicle iden-
tification plate (Y
page 372).
For certain countries only: the VIN can also be
found at the lower edge of the windscreen. Engine number
The engine number is stamped into the crank-
case. You can obtain further information from
any qualified specialist workshop. Service products and capacities
Important safety notes
G
WARNING
Service product can be poisonous and haz-
ardous to health. There is a risk of injury.
Observe the instructions on the respective
original container when using, storing and dis- posing off service products. Always store ser-
vice products in the sealed original container. Always keep service products out of the reach
of children. H
Environmental note
Dispose of service products in an environ-
mentally-responsible manner.
Service products include the following:
R fuels
R exhaust gas aftertreatment additives, e.g.
AdBlue ®
R lubricants (e.g. engine oil, transmission oil)
R Coolant
R brake fluid
R windscreen washer fluid
R Climate control system refrigerant
Components and service products must be
matched. Use only products approved by
Mercedes-Benz. Damage caused by the use of
products that have not been recommended is
not covered by the Mercedes-Benz warranty or
goodwill gestures. They are listed in this
Mercedes-Benz Owner's Manual in the appro-
priate section. Service products and capacities
373Technical data Z

age to the fuel system, engine and exhaust
system.
! Do not use the following:
R E85 (petrol with 85% ethanol)
R E100 (100% ethanol)
R M15 (petrol with 15% methanol)
R M30 (petrol with 30% methanol)
R M85 (petrol with 85% methanol)
R M100 (100% methanol)
R petrol with additives containing metal
R diesel
Do not mix such fuels with the fuel recom-
mended for your vehicle.
You will usually find information about the fuel
quality on the pump. If you cannot find the label on the petrol pump, ask the filling station staff.
GLC 250 4MATIC Coupé: as a temporary meas-
ure, if the recommended fuel is not available,
you may also use regular unleaded petrol with
an octane rating of 93 RON.
All other models: as a temporary measure, if
the recommended fuel is not available, you may
also use regular unleaded petrol with an octane rating of 91 RON. This may reduce engine per-
formance and increase fuel consumption. Avoiddriving at full throttle and sudden acceleration.
Never refuel using fuel with a lower RON.
i In some countries, the petrol available may
not be sufficiently low in sulphur. This fuel can temporarily produce unpleasant odours,
especially on short journeys. As soon as sul-
phur-free fuel (sulphur content < 10 ppm) is
used for refuelling, the odours are reduced.
Information on refuelling (Y page 162).
GLC 300 4MATIC Coupé, Mercedes-AMG
GLC 43 4MATIC Coupé
! Only refuel using super unleaded petrol with
at least 98 ROZ, if you want maximum per-
formance from the engine. Alternatively, you
can also use unleaded petrol of at least
95 ROZ.
As a temporary measure, if the recommended
fuel is not available, you may also use regular unleaded petrol with an octane rating of
91 ROZ. Doing so results in higher fuel con-
sumption and significantly reduced perform-
ance. Never refuel using fuel with a lower
RON. Fuel of this specification may contain up to
10% ethanol.
Fuel that does not conform to EN 228 or E DIN
51626–1 can lead to increased wear as well
as damage to the engine and exhaust system.
Additives ! Operating the engine with fuel additives
added later can lead to engine failure. Do not mix fuel additives with fuel. This does not
include additives for the removal and preven-
tion of residue build-up. Petrol must only be
mixed with additives recommended by
Mercedes-Benz. Observe the instructions for
use in the product description. More informa- tion about recommended additives can be
obtained from any Mercedes-Benz Service
Centre.
Mercedes-Benz recommends that you use fuel
brands containing additives.
The quality of the fuel available in some coun-
tries may not be sufficient. Residue could build
up in the fuel injection system as a result. In this
case, in consultation with a Mercedes-Benz Ser- vice Centre, the petrol may be mixed with the
cleaning additive recommended by Mercedes-
Benz. Always observe the notes and mixing
ratios specified on the container.
Diesel Fuel grade
G
WARNING
If you mix diesel fuel with petrol, the flash
point of this fuel mixture is lower than that of pure diesel fuel. When the engine is running,
components in the exhaust system may over-
heat unnoticed. There is a risk of fire.
Never refuel with petrol. Never add petrol to
diesel fuel.
! When refuelling, only use diesel fuel that
conforms to the European standard EN 590 or is of equivalent quality. Fuel that does not
conform to EN 590 can lead to increased wear
as well as damage to the engine and exhaust system.
! Do not use the following:
R marine diesel
R heating oil Service products and capacities
375Technical data Z

R
bio-diesel
R vegetable oil
R petrol
R paraffin
R kerosene
Do not mix such fuels with diesel fuel and do
not use any special additives. Otherwise,
engine damage may occur.
! In countries outside the EU, only use low-
sulphur Euro diesel with a sulphur content of
under 50 ppm. Otherwise, the emission con-
trol system could be damaged.
Usually you will find information about the fuel
grade on the pump. If you cannot find the label
on the petrol pump, ask the filling station staff.
Information on refuelling (Y page 162).
Low outside temperatures In winter months, diesel fuel with an improved
cold flow quality is available. In Europe, the
EN 590 standard defines various climate-
dependent temperature categories. Malfunc-
tions can be avoided by refuelling with diesel
fuel that corresponds to the climatic specifica-
tions outlined in EN 590. At unusually low out-
side temperatures, it is possible that the flow
characteristics of the diesel fuel could be insuf- ficient. Accordingly, diesel fuel from warmer
areas may not be suitable for operation in colderclimatic conditions.
i Further information on country-specific fuel
properties and fuel types with low-tempera-
ture resistance can be obtained from oil com- panies, e.g. at filling stations. AdBlue
®
Important safety notes Comply with the important safety notes for ser-
vice products when handling AdBlue ®
(Y page 373).
AdBlue ®
is a water-soluble fluid for the exhaust
gas aftertreatment of diesel engines. It is:
R non-toxic
R colourless and odourless
R non-flammable
If you open the AdBlue ®
tank, small amounts of
ammonia vapour may be released. Ammonia vapours have a pungent odour and are
particularly irritating to the skin, mucous mem-
branes and eyes. You may experience a burning sensation in your eyes, nose and throat. You
may also experience coughing and watery eyes.
Do not inhale any ammonia vapours that may be
released. Fill the AdBlue ®
tank only in well-ven-
tilated areas.
Low outside temperatures AdBlue
®
freezes at a temperature of approx-
imately -11 †. The vehicle is delivered from the
factory equipped with an AdBlue ®
preheating
system. Winter operation can thus be guaran-
teed even at temperatures below -11 †.
Additives !
Only use AdBlue ®
in accordance with ISO
22241. Do not use additives with AdBlue ®
and do not dilute AdBlue ®
with water. This
may destroy the BlueTEC exhaust gas after-
treatment system.
Purity !
Impurities in AdBlue ®
(e.g. due to other ser-
vice products, cleaning agents or dust) lead
to:
R increased emission values
R damage to the catalytic converter
R engine damage
R malfunctions in the BlueTEC ®
exhaust gas
aftertreatment system
Assuring the purity of AdBlue ®
is particularly
important with regard to avoiding malfunctions
in the BlueTEC exhaust gas aftertreatment sys-
tem.
If AdBlue ®
is pumped out of the AdBlue ®
tank,
e.g. during repair work, do not use this fluid to
refill the tank. The purity of the fluid can no lon-
ger be guaranteed.
Filling capacities Model Total capacity
All models
27.5 l376
Service products and capacitiesTechnical data

Engine oil
General notes When handling engine oil, observe the important
safety notes on service products (Y page 373).
The quality of the engine oil is decisive for the
function and service life of an engine. After
extensive tests, Mercedes-Benz approves
engine oils that correspond to the current tech-
nical standard.
Therefore, only Mercedes-Benz-approved
engine oils may be used in Mercedes-Benz
engines.
Further information on tested and approved
engine oils can be obtained from any Mercedes-
Benz Service Centre. Mercedes-Benz recom-
mends that you have the oil change carried out
at a qualified specialist workshop. Mercedes-
Benz approval is indicated on the oil container
by the inscription "MB-Freigabe" or "MB-
Approval" and the corresponding designation,
e.g. MB-Freigabe or MB-Approval 229.51.
You can call up an overview of approved engine oils on the internet at
http://bevo.mercedes-benz.com by entering
the designation, e.g. 229.5.
The table shows which engine oils have been
approved for your vehicle.
Petrol engines: for certain countries, different
engine oils can be used, provided that the main-
tenance intervals are reduced. For more infor-
mation, please contact a qualified specialist
workshop. Petrol engines MB-Freigabe or
MB-Approval All models
229.5 Diesel engines MB-Freigabe or
MB-Approval All models
228.51, 229.31,
229.51, 229.52 i
If the engine oils listed on the table are not
available, you may top up with the following
engine oils until the next oil change:
R Petrol engines: MB-Freigabe or MB-
Approval 229.3 or ACEA A3/B3
R Diesel engines: MB-Freigabe or MB-
Approval 229.3, 229.5 or ACEA C3
It may be used only once and the topping-up
quantity must not exceed 1.0 l.
Filling capacities The following values refer to an oil change,
including the oil filter.
Missing values were not available at the time of
going to press. Model Replacement
amount GLC 300 4MATIC
Coupé
GLC 250 4MATIC
Coupé
Mercedes-AMG
GLC 43 4MATIC
Coupé
6.5 l
GLC 350 d 4MATIC
Coupé
8.0 l
All other models
6.0 l
Additives
!
Do not use any additives with the engine oil.
This could damage the engine. Brake fluid
G
WARNING
The brake fluid continuously absorbs mois-
ture from the air. This results in the boiling
point of the brake fluid lowering. If the boiling
point of the brake fluid is too low, vapour Service products and capacities
377Technical data
Z