engine coolant MERCEDES-BENZ SLC 2019 Owners Manual

Children
Special seat belt retractor ...............54
Children in the vehicle
Important safety notes .................... 53
Cigarette lighter................................ 229
Cleaning
Mirror turn signal ...........................250
Climate control
Air-conditioning system ................. 106
Automatic climate control (dual-
zone) .............................................. 108
Controlling automatically ...............111
Cooling with air dehumidification .. 110
Defrosting the windows ................. 113
Defrosting the windshield .............. 112
General notes ................................ 106
Indicator lamp ................................ 111
Information about using auto-
matic climate control ..................... 109
Maximum cooling .......................... 113
Notes on using the air-condition-
ing system ..................................... 107
Overview of systems ......................106
Problem with the rear window
defroster ........................................ 114
Problems with cooling with air
dehumidification ............................ 111
Refrigerant ..................................... 303
Refrigerant filling capacity ............. 303
Setting the air distribution ............. 112
Setting the air vents ......................115
Setting the airflow ......................... 112
Setting the temperature ................ 111
Switching air-recirculation mode
on/off ............................................ 114
Switching on/off ........................... 110
Switching residual heat on/off ...... 114
Switching the rear window
defroster on/off ............................ 113
Switching the ZONE function
on/off ............................................ 112
Cockpit
Overview .......................................... 31
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 295
see Emergency spare wheel
Combination switch............................ 99
Compass
Calibrating ..................................... 238
Calling up ....................................... 237
Setting ...........................................238
Connecting a USB device
see also Digital Operator's Man-
ual ..................................................217
Consumption statistics (on-board
computer).......................................... 170
Controller...........................................218
Convenience closing feature.............. 77
Coolant (engine)
Checking the level ......................... 242
Display message ............................ 194
Filling capacity ............................... 302
Important safety notes .................. 301
Temperature (on-board com-
puter, Mercedes-AMG SLC 43) ...... 179
Temperature gauge ........................ 168
Warning lamp ................................. 213
Cooling
see Climate control
Copyright............................................. 30
Cornering light function
Display message ............................ 193
Function/notes ................................ 99
Cruise control
Cruise control lever ....................... 142
Deactivating ................................... 143
Display message ............................ 200
Driving system ............................... 142
Function/notes .............................142
Important safety notes .................. 142
Setting a speed .............................. 143
Storing and maintaining current
speed ............................................. 142
Cup holder
Center console .............................. 228
Important safety notes .................. 227
Customer Assistance Center
(CAC)..................................................... 28
Customer Relations Department....... 28
D
Dashboard
see Instrument cluster
Index7

Overview .......................................... 78
Problem (malfunction) ..................... 84
Relocking ......................................... 80
Roof carrier........................................227
Roof switch.......................................... 79
Route guidance
see also Digital Operator's Man-
ual ..................................................217
Route guidance active......................172
S
Safety
Children in the vehicle ..................... 53
see Occupant safety
Safety system
see Driving safety systems
SD card
Inserting ........................................ 224
Inserting/removing ........................ 223
Removing ....................................... 224
SD memory card
see also Digital Operator's Man-
ual ..................................................217
Selecting ........................................ 173
Search & Send
see also Digital Operator's Man-
ual ..................................................217
Seat
Correct driver's seat position ........... 85
Seat belts
Adjusting the driver's and front-
passenger seat belt......................... 42
Correct usage .................................. 41
Fastening ......................................... 42
Important safety guidelines ............. 40
Introduction ..................................... 39
Releasing ......................................... 42
Switching belt adjustment on/off
(on-board computer) ...................... 178
Warning lamp ................................. 208
Warning lamp (function) ................... 42
Seats
Adjusting (electrically) ..................... 87
Adjusting (manually) ........................ 87
Adjusting the 4-way lumbar sup-
port .................................................. 88
Adjusting the head restraint ............ 87
Important safety notes .................... 85
Overview .......................................... 85
Seat heating problem ...................... 89
Storing settings (memory func-
tion) ................................................. 95
Switching AIRSCARF on/off............ 89
Switching seat heating on/off......... 88
Selector lever
Positions ........................................ 125
Sensors (cleaning instructions)....... 250
Service menu (on-board com-
puter).................................................. 176
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 301
Coolant (engine) ............................ 301
Engine oil ....................................... 300
Fuel ................................................ 299
Important safety notes .................. 298
Refrigerant (air-conditioning sys-
tem) ............................................... 303
Washer fluid ................................... 302
Setting the air distribution............... 112
Setting the airflow............................ 112
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 217
Setting the language
see also Digital Operator's Man-
ual .................................................. 217
Setting the time
see also Digital Operator's Man-
ual .................................................. 217
Settings
Factory (on-board computer) ......... 179
On-board computer....................... 176
SETUP (on-board computer,
Mercedes-AMG vehicles).................. 180
Side impact air bag............................. 45
Side marker lamp
Changing bulbs (rear) .................... 103
Side marker lamp (display mes-
sage)................................................... 193
Side windows
Cleaning ......................................... 249
Convenience closing feature ............ 77
16Index

Technical data
Capacities ...................................... 298
Emergency spare wheel ................. 294
Information .................................... 296
Tires/wheels ................................. 292
Vehicle data ................................... 303
TELEAID
Call priority .................................... 233
Emergency call .............................. 231
General notes ................................ 230
MB info call button ........................233
Roadside Assistance button .......... 232
Self-test ......................................... 230
System .......................................... 230
Vehicle Health Check .................... 233
Telephone
Accepting a call (multifunction
steering wheel) .............................. 174
Authorizing a mobile phone (con-
necting) ......................................... 221
Authorizing a mobile phone via
the device manager (connecting) ... 222
Connecting a mobile phone
(device manager) ........................... 222
Connecting a mobile phone (gen-
eral information) ............................ 221
Display message ............................ 205
Menu (on-board computer) ............ 173
Number from the phone book ........174
Redialing ........................................ 174
Rejecting/ending a call ................. 174
see also Digital Operator's Man-
ual ..................................................217
Temperature
Coolant .......................................... 168
Coolant (on-board computer,
Mercedes-AMG SLC 43) ................ 179
Engine oil (on-board computer,
Mercedes-AMG SLC 43) ................ 179
Outside temperature ......................167
Setting (climate control) ................ 111
Transmission oil (on-board com-
puter, Mercedes-AMG SLC 43) ...... 179
Timing (RACETIMER)......................... 180
Tire pressure
Calling up (on-board computer) ..... 274
Checking manually ........................ 273
Display message ............................ 201
Maximum ....................................... 273
Not reached (TIREFIT) .................... 256
Notes ............................................. 272
Reached (TIREFIT) .......................... 256
Recommended ............................... 270
Tire pressure loss warning sys-
tem
General notes ................................ 273
Important safety notes .................. 274
Restarting ...................................... 274
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 276
Function/notes .............................274
General notes ................................ 274
Important safety notes .................. 275
Radio type approval for the tire
pressure monitor ........................... 278
Restarting ...................................... 277
Warning lamp ................................. 216
Warning message .......................... 276
Tire-change tool kit........................... 252
TIREFIT kit.......................................... 254
Important safety notes .................. 254
Storage location ............................ 252
Tire pressure not reached .............. 256
Tire pressure reached .................... 256
Tires
Aspect ratio (definition) ................. 287
Average weight of the vehicle
occupants (definition) .................... 286
Bar (definition) ............................... 286
Changing a wheel .......................... 288
Characteristics .............................. 286
Checking ........................................ 267
Curb weight (definition) ................. 287
Definition of terms ......................... 286
Direction of rotation...................... 289
Display message ............................ 201
Distribution of the vehicle occu-
pants (definition) ............................ 288
DOT (Department of Transporta-
tion) (definition) ............................. 286
DOT, Tire Identification Number
(TIN) ............................................... 285
GAWR (Gross Axle Weight Rat-
ing) (definition) .............................. 287
18Index

Trunk partition
Display message ............................ 205
General notes .................................. 80
Opening/closing .............................. 81
Turn signals
Display message ............................ 193
Switching on/off .............................. 99
Two-way radio
Frequencies ................................... 296
Installation ..................................... 296
Transmission output (maximum) .... 296
Type identification plate
see Vehicle identification plate
U
Unlocking
Emergency unlocking ....................... 73
From inside the vehicle (central
unlocking button) ............................. 72
Upshift indicator
(on-board computer, Mercedes-
AMG SLC 43) ................................. 179
USB devices
Connecting to the Media Inter-
face ...............................................224
V
Vehicle
Correct use ...................................... 27
Data acquisition ............................... 28
Display message ............................ 203
Electronics ..................................... 296
Equipment ....................................... 24
Individual settings .......................... 176
Limited Warranty .............................28
Loading .......................................... 279
Locking (in an emergency) ............... 73
Locking (SmartKey) .......................... 66
Lowering ........................................ 292
Maintenance .................................... 25
Parking for a long period ................ 137
Pulling away................................... 120
Raising ........................................... 290
REACH Regulation ........................... 27
Reporting problems ......................... 28
Securing from rolling away ............ 289
Tow-starting ................................... 263
Towing away .................................. 263
Transporting .................................. 265
Unlocking (in an emergency) ........... 73
Unlocking (SmartKey)...................... 66
Vehicle data ................................... 303
Vehicle battery
see Battery (vehicle)
Vehicle data....................................... 303
Vehicle dimensions........................... 303
Vehicle emergency locking................ 73
Vehicle identification number
see VIN
Vehicle identification plate.............. 297
Vehicle tool kit.................................. 252
Video
Operating the DVD ......................... 173
see also Digital Operator's Man-
ual .................................................. 217
VIN
Seat ............................................... 298
Type plate ...................................... 297
W
Warning and indicator lamps
ABS ................................................ 210
Active Brake Assist ........................ 215
Brake Assist ................................... 215
Brakes ........................................... 210
Check Engine ................................. 213
Coolant .......................................... 213
Distance warning ........................... 215
ESP®.............................................. 211
ESP®OFF ....................................... 212
Fuel tank ........................................ 213
General notes ................................ 208
Parking brake ................................ 212
PASSENGER AIR BAG ...................... 39
Reserve fuel................................... 213
Restraint system ............................ 212
Seat belt ........................................ 208
SPORT handling mode................... 212
Tire pressure monitor .................... 216
Warranty.............................................. 24
Washer fluid
Display message ............................ 206
20Index

ProblemPossible causes/consequences andPPSolutions
The coolant tempera-ture display shows avalue above 248 ‡(120 †). The coolantwarning lamp may alsobe on and a warningtone may sound.
The coolant level is too low. The coolant is too hot and the engine isno longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant tocool down.
XCheck the coolant level (Ypage 242). Observe the warning notesas you do so and add coolant if necessary.
If the coolant level is correct, the engine radiator fan may be faulty.The coolant is too hot and the engine is no longer being cooled suf-ficiently.
XAt coolant temperatures below 248 ‡ (120 †), drive to the near-est qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving inmountainous terrain and stop-and-go traffic.
Notes on towing vehicles
The vehicle is not suitable for attaching towbar systems, such as those used for flat tow-ing or dinghy towing.
Attaching or using tow bar systems may resultin damage to the vehicle.
When towing a vehicle with tow bar systems,safe driving characteristics cannot be guaran-teed for the towing vehicle or the towed vehi-cle.
The vehicle/vehicle combination may swerve.
Observe the permissible towing methods(Ypage 264) and the notes on towing withboth axles on the ground (Ypage 264).
DYNAMIC SELECT button
Use the DYNAMIC SELECT button to changethe drive program. Depending on the drive pro-gram selected the following vehicle character-istics will change:
Rthe drive (engine and transmission manage-ment)
Rthe suspension or the adaptive adjustabledamping only on vehicles with AMG RIDECONTROL sports suspension
Rthe sound of the exhaust system (vehicleswith sports exhaust system)
Rthe steering
Rthe availability of the ECO start/stop func-tion
Each time you start the engine with the Smart-Key or the Start/Stop button, drive programCis activated. For further information aboutstarting the engine, see (Ypage 119).
XPress DYNAMIC SELECT buttonCas manytimes as necessary until the desired driveprogram is selected.The selected drive program appears in themultifunction display. After a short period oftime, the display goes out and the symbolfor the selected drive program appears.
In addition, the current drive program set-tings are displayed briefly in the multimediasystem display.
iIn a few countries, the ECO start/stopfunction is deactivated at the factory due tothe available fuel grade. In this case, theECO start/stop function is not available inany drive program, regardless of the displayin the multimedia system display.
In city traffic and stop-start traffic, drive pro-gramCis recommended.
124DYNAMIC SELECT button
Driving and parking

Bear in mind that the outside temperature dis-play indicates the temperature measured anddoes not record the road temperature.
The outside temperature display is in the mul-tifunction display (Ypage 169).
A change in the outside temperature is shownin the multifunction display after a delay.
Coolant temperature gage
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
!A display message is shown if the coolanttemperature is too high.
If the coolant temperature is over 248 ‡(120 †), do not continue driving. Theengine will otherwise be damaged.
The coolant temperature gage is in the instru-ment cluster on the right-hand side(Ypage 32).
TheHmarking in the coolant temperaturegauge corresponds to a coolant temperatureof approximately 248 ‡ (120 †).
Under normal operating conditions and at thecorrect coolant level, the coolant temperaturegauge may rise to theHmarking.
Operating the on-board computer
Overview
CMultifunction display
DRight control panel

Warning/indicatorlamp
QQSignal type
Possible causes/consequences andPPSolutions
XMake sure that the air supply to the engine radiator is not blocked, e.g. bysnow, slush or ice.
XIf the coolant temperature gage is below theHmarking (Ypage 168), driveon to the next qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous ter-rain and stop-and-go traffic.
Driving systems
Warning/indicatorlamp
QQSignal type
Possible causes/consequences andPPSolutions

GWARNING
If engine oil comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next
to the filler neck. Let the engine cool down
and thoroughly clean the engine oil off the
components before starting the engine.
HEnvironmental note
When adding 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 areapproved for vehicles with a service system.A list of the engine oils and oil filters thathave been tested and approved in accord-ance with Mercedes-Benz Specifications forService Products is available at any author-ized Mercedes-Benz Center.
The following cause engine failure or dam-age to the exhaust system:
RUse of engine oils and oil filters that havenot been expressly approved for the ser-vice system
RReplacement of engine oil and oil filterafter the replacement interval specifiedby the service system has expired
RUse of engine oil additives
!Do not add too much oil. If the oil level isabove the "max" mark on the dipstick, toomuch oil has been added. This can lead todamage to the engine or the catalytic con-verter. Have excess oil siphoned off.
Example: engine oil cap
XTurn capCcounter-clockwise and removeit.
XAdd engine oil.If the oil level is at or below the MIN markon the oil dipstick, add 1.1 US qt (1.0 liter)of engine oil.
XReplace capCon the filler neck and turnclockwise.Ensure that the cap locks into placesecurely.
XCheck the oil level again with the oil dipstick(Ypage 241).
Further information on engine oil(Ypage 300).
Checking and adding other service
products
Checking coolant level
GWARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very
hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down
and touch only the components described in
the following.
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off.
There is a risk of injury.
242Engine compartment
Maintenance and care

If you need to do any work inside the engine
compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothing and hair, for exam-
ple, away from moving parts
GWARNING
The cooling system is pressurized, particu-
larly when the motor is warm. If you open
the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open
the cap. Wear protective gloves and protec-
tive eyewear when opening. Open the cap
slowly to release pressure.
Example
XPark the vehicle on a level surface.
Only check the coolant level when the vehi-cle is on a level surface and the engine hascooled down.
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
On vehicles with KEYLESS-GO, press theStart/Stop button twice (Ypage 118).
XCheck the coolant temperature gage in themultifunction display.The coolant temperature must be below158 ‡ (70 †).
XTurn the SmartKey to position

The table shows which engine oils have beenapproved for your vehicle.
ModelMB-Freigabe orMB-Approval
All models229.5
iMB approval is indicated on the oil con-tainers.
Filling capacities
The following values refer to an oil changeincluding the oil filter.
ModelCapacity
SLC 3006.7 US qt (6.3l)
Mercedes-AMGSLC 436.9 US qt (6.5l)
Additives
!Do not use any additives in the engine oil.This could damage the engine.
Brake fluid
GWARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the
brake fluid is too low, vapor pockets may
form in the brake system when the brakes
are applied hard. This would impair braking
efficiency. There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
When handling brake fluid, observe the impor-tant safety notes on service products(Ypage 298).
The brake fluid change intervals can be foundin the Maintenance Booklet.
Only use brake fluid approved by Mercedes-Benz in accordance with MB-Freigabe or MB-Approval 331.0.
Information about approved brake fluid can beobtained at any qualified specialist workshop
or on the Internet athttp://bevo.mercedes-benz.com.
iHave the brake fluid regularly replaced at aqualified specialist workshop and thereplacement confirmed in the MaintenanceBooklet.
Coolant
Important safety notes
GWARNING
If antifreeze comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Let the engine cool down before you add
antifreeze. Make sure that antifreeze is not
spilled next to the filler neck. Thoroughly
clean the antifreeze from components
before starting the engine.
!Only add coolant that has been premixedwith the desired antifreeze protection. Youcould otherwise damage the engine.
You can find additional notes on the coolantin the following places:
Rin the Mercedes-Benz Specifications forService Products, MB BeVo 310.1
-on the Internet athttp://bevo.mercedes-benz.com
-on the Mercedes-Benz BeVo app
Ra qualified specialized workshop
!Always use a suitable coolant mixture,even in countries where high temperaturesprevail.
Otherwise, the engine cooling system is notsufficiently protected from corrosion andoverheating.
iHave the coolant regularly replaced at aqualified specialist workshop and thereplacement confirmed in the MaintenanceBooklet.
Comply with the important safety notes forservice products when handling coolant(Ypage 298).
Service products and filling capacities301
Technical data
Z