coolant MERCEDES-BENZ SL CLASS 2019 Owners Manual

Switching the rear window
defroster on/off............................ 121
Switching the ZONE function
on/off............................................ 120
Cockpit
Overview .......................................... 32
see Instrument cluster
COMAND
Driving dynamics display (except
Mercedes-AMG vehicles) ....... 168, 170
Driving dynamics display
(Mercedes-AMG vehicles) .............. 172
Combination switch.......................... 110
Compass
Calibrating ..................................... 263
Calling up ....................................... 262
Setting ........................................... 263
Connecting a USB device
see also Digital Operator's Man-
ual .................................................. 243
Consumption statistics (on-board
computer).......................................... 193
Controller........................................... 244
Convenience closing feature.............. 89
Coolant (engine)
Checking the level ......................... 267
Display message ............................ 218
Filling capacity ............................... 325
Important safety notes .................. 324
Temperature (on-board com-
puter, Mercedes-AMG vehicles) ..... 202
Temperature gauge........................ 191
Warning lamp ................................. 239
Cooling
see Climate control
Copyright............................................. 31
Cornering light function
Display message ............................ 217
Function/notes............................. 111
Cruise control
Cruise control lever ....................... 154
Deactivating ................................... 155
Display message ............................ 226
Driving system ............................... 154
Function/notes............................. 154
Important safety notes .................. 154
Setting a speed .............................. 155
Storing and maintaining current
speed ............................................. 154
Cup holder
Center console .............................. 253
Important safety notes .................. 252
Customer Assistance Center
(CAC)..................................................... 29
Customer Relations Department....... 29
D
Data
see Technical data
Data carrier
Selecting ........................................ 196
Daytime running lamps
Display message ............................ 217
Function/notes............................. 109
Switching on/off (on-board com-
puter) ............................................. 200
Declarations of conformity................. 27
Decorative film
Cleaning instructions ..................... 273
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 200
Interior lighting .............................. 201
Diagnostics connection...................... 28
Digital Operator's Manual
Help ................................................. 23
Introduction ..................................... 23
Digital speedometer......................... 194
Display messages
ASSYST PLUS ................................ 269
Calling up (on-board computer) ..... 205
Driving systems ............................. 221
Engine ............................................ 218
General notes ................................ 205
Hiding (on-board computer) ........... 205
KEYLESS-GO .................................. 232
Lights ............................................. 217
Safety systems .............................. 206
SmartKey ....................................... 231
Tires ............................................... 227
Vehicle ........................................... 228
Distance recorder
see Odometer
see Trip odometer
8Index

SD card
Inserting ........................................248
Inserting/removing ........................ 248
Removing ....................................... 248
SD memory card
see also Digital Operator's Man-
ual ..................................................243
Selecting ........................................ 196
Search & Send
see also Digital Operator's Man-
ual ..................................................243
Seat
Correct driver's seat position ........... 97
Seat belts
Adjusting the driver's and front-
passenger seat belt......................... 44
Correct usage .................................. 43
Fastening ......................................... 44
Important safety guidelines ............. 42
Introduction ..................................... 41
Releasing ......................................... 44
Seat belt guide ................................. 99
Switching belt adjustment on/off
(on-board computer) ...................... 202
Warning lamp ................................. 233
Warning lamp (function) ................... 44
Seats
Adjusting (electrically) ..................... 99
Adjusting the head restraint .......... 100
Belt guide ......................................... 99
Important safety notes .................... 97
Overview .......................................... 97
Seat heating problem .................... 101
Seat ventilation problem ................ 102
Sliding forward/back ..................... 100
Storing settings (memory func-
tion) ............................................... 107
Switching AIRSCARF on/off.......... 102
Switching seat heating on/off....... 101
Switching seat ventilation on/off.. 102
Selector lever
Positions ........................................ 134
Sensors (cleaning instructions)....... 275
Service menu (on-board com-
puter).................................................. 199
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 324
Coolant (engine) ............................ 324
Engine oil ....................................... 323
Fuel ................................................ 322
Important safety notes .................. 321
Refrigerant (air-conditioning sys-
tem) ............................................... 326
Washer fluid ................................... 325
Setting the air distribution............... 120
Setting the airflow............................ 120
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 243
Setting the language
see also Digital Operator's Man-
ual .................................................. 243
Setting the time
see also Digital Operator's Man-
ual .................................................. 243
Settings
Factory (on-board computer) ......... 202
On-board computer ....................... 199
SETUP (on-board computer,
Mercedes-AMG vehicles).................. 203
Side impact air bag............................. 47
Side marker lamp (display mes-
sage)................................................... 217
Side windows
Cleaning ......................................... 274
Convenience closing feature ............ 89
Important safety information ........... 87
Opening/closing (all) ....................... 88
Opening/closing (front) ................... 88
Opening/closing (rear) .................... 88
Overview .......................................... 87
Problem (malfunction) ..................... 90
Resetting ......................................... 89
Reversing feature ............................. 87
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 243
SmartKey
Changing the battery ....................... 77
Changing the programming ............. 75
Checking the battery ....................... 77
Display message ............................ 231
Index17

Tank content
Fuel gauge....................................... 33
Technical data
Capacities ...................................... 321
Information .................................... 319
Tires/wheels ................................. 318
Vehicle data ................................... 326
TELEAID
Call priority .................................... 258
Emergency call .............................. 256
General notes ................................ 255
MB info call button ........................ 258
Roadside Assistance button .......... 257
Self-test ......................................... 255
System .......................................... 255
Vehicle Health Check .................... 259
Telephone
Accepting a call (multifunction
steering wheel) .............................. 197
Authorizing a mobile phone (con-
necting) ......................................... 247
Connecting a mobile phone (gen-
eral information) ............................ 246
Display message ............................ 230
Menu (on-board computer) ............ 196
Number from the phone book ........ 197
Redialing ........................................ 197
Rejecting/ending a call ................. 197
see also Digital Operator's Man-
ual .................................................. 243
Temperature
Coolant .......................................... 191
Coolant (on-board computer,
Mercedes-AMG vehicles) ............... 202
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 202
Outside temperature ...................... 190
Setting (climate control)................ 119
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 202
Timing (RACETIMER)......................... 203
Tire pressure
Calling up (on-board computer) ..... 299
Checking manually ........................ 299
Display message ............................ 227
Maximum ....................................... 299
Not reached (TIREFIT) .................... 281
Notes ............................................. 298
Reached (TIREFIT) .......................... 281
Recommended ............................... 296
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 301
Function/notes............................. 299
General notes ................................ 299
Important safety notes .................. 300
Radio type approval for the tire
pressure monitor ........................... 302
Restarting ...................................... 301
Warning lamp ................................. 242
Warning message .......................... 301
Tire-change tool kit........................... 278
TIREFIT kit.......................................... 279
Important safety notes .................. 279
Storage location ............................ 277
Tire pressure not reached .............. 281
Tire pressure reached .................... 281
Tires
Aspect ratio (definition) ................. 312
Average weight of the vehicle
occupants (definition) .................... 311
Bar (definition) ............................... 311
Changing a wheel.......................... 313
Characteristics .............................. 311
Checking ........................................ 293
Curb weight (definition) ................. 312
Definition of terms ......................... 311
Direction of rotation ...................... 313
Display message ............................ 227
Distribution of the vehicle occu-
pants (definition) ............................ 313
DOT (Department of Transporta-
tion) (definition) ............................. 311
DOT, Tire Identification Number
(TIN) ............................................... 310
GAWR (Gross Axle Weight Rat-
ing) (definition) .............................. 311
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 311
GVWR (Gross Vehicle Weight
Rating) (definition) ......................... 311
Important safety notes .................. 293
Increased vehicle weight due to
optional equipment (definition) ...... 311
Information on driving .................... 293
Kilopascal (kPa) (definition) ........... 312
Index19

Trunk partition
Display message ............................ 230
General notes .................................. 92
Installing .......................................... 93
Opening/closing .............................. 93
Removing ......................................... 93
Turn signals
Display message ............................ 217
Switching on/off ........................... 110
Two-way radio
Frequencies ................................... 319
Installation ..................................... 319
Transmission output (maximum) .... 319
Type identification plate
see Vehicle identification plate
U
Umbrella holder................................. 250
Unlocking
Emergency unlocking ....................... 81
From inside the vehicle (central
unlocking button) ............................. 80
Upshift indicator (on-board com-
puter, Mercedes-AMG vehicles)....... 202
USB devices
Connecting to the Media Inter-
face ...............................................248
V
Vehicle
Correct use ...................................... 28
Data acquisition ............................... 29
Display message ............................ 228
Electronics ..................................... 319
Equipment ....................................... 25
Individual settings .......................... 199
Limited Warranty .............................29
Loading .......................................... 303
Locking (in an emergency) ............... 81
Locking (SmartKey) .......................... 74
Lowering ........................................ 317
Maintenance .................................... 26
Parking for a long period ................ 149
Pulling away................................... 128
Raising ........................................... 314
REACH Regulation ........................... 28
Reporting problems ......................... 29
Securing from rolling away ............ 314
Tow-starting ................................... 288
Towing away .................................. 288
Transporting .................................. 290
Unlocking (in an emergency) ........... 81
Unlocking (SmartKey)...................... 74
Vehicle data ................................... 326
Vehicle battery
see Battery (vehicle)
Vehicle data....................................... 326
Vehicle dimensions........................... 326
Vehicle emergency locking................ 81
Vehicle identification number
see VIN
Vehicle identification plate.............. 320
Vehicle level
Active Body Control (ABC)
(except Mercedes-AMG vehicles) .. 168
Active Body Control (ABC)
(Mercedes-AMG vehicles) .............. 170
Display message ............................ 221
Vehicle tool kit.................................. 277
Video
Operating the DVD ......................... 196
see also Digital Operator's Man-
ual .................................................. 243
VIN
Seat ............................................... 321
Type plate ...................................... 320
W
Warning and indicator lamps
ABS ................................................ 236
Active Brake Assist ........................ 241
Brake Assist ................................... 241
Brakes ........................................... 235
Check Engine ................................. 239
Coolant .......................................... 239
Distance warning ........................... 241
ESP®.............................................. 236
ESP®OFF ....................................... 237
Fuel tank ........................................ 239
General notes ................................ 233
Parking brake ................................ 238
PASSENGER AIR BAG ...................... 41
Reserve fuel................................... 239
Restraint system ............................ 238
Index21

ProblemPossible causes/consequences andPPSolutions
The engine is not run-ning smoothly and ismisfiring.
There is a malfunction in the engine electronics or in a mechanicalcomponent of the engine management system.
XOnly depress the accelerator pedal slightly.Otherwise, non-combusted fuel may get into the catalytic con-verter and damage it.
XHave the cause rectified immediately at a qualified specialistworkshop.
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 267). 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 289) and the notes on towing withboth axles on the ground (Ypage 289).
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehicles)
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
Rthe steering
Rthe curve tilting function (vehicles withActive Body Control)
Rthe control thresholds of ESP®
Each time you start the engine with the Smart-Key or the Start/Stop button, drive programCis activated. Further information about startingthe engine (Ypage 127).
Each time you start the engine with the Smart-Key, drive programCis activated. Furtherinformation about starting the engine(Ypage 127).
132DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
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 192).
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 33).
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 191), 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 266).
Further information on engine oil(Ypage 323).
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.
Engine compartment267
Maintenance and care
Z

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 126).
On vehicles with KEYLESS-GO, press theStart/Stop button twice (Ypage 126).
XCheck the coolant temperature gage in themultifunction display.The coolant temperature must be below158 ‡ (70 †).
XTurn the SmartKey to position

Observe the legal requirements in each coun-try.
XDo not use hot water and do not wash thevehicle in direct sunlight.
XUse a soft sponge to clean.
XUse a mild cleaning agent, such as a carshampoo approved by Mercedes-Benz.
XThoroughly hose down the vehicle with agentle jet of water.
XDo not point the water jet directly towardsthe air inlet or the edges of decorative foils.
XUse plenty of water and rinse out thesponge frequently.
XRinse the vehicle with clean water and drythoroughly with a chamois.
XDo not let the cleaning agent dry on thepaintwork or the decorative foils.
Carefully remove all deposits of road salt assoon as possible when driving in winter.
Power washers
GWARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior dam-
age to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
!Vehicles with decorative film: parts of yourvehicle are covered with decorative film.Maintain a distance of at least 27.5 in(70 cm) between the film-covered parts ofthe vehicle and the nozzle of the powerwasher.
Information about the correct distance isavailable from the equipment manufacturer.
Move the power washer nozzle around whencleaning your vehicle.
The water temperature of the power washermust not exceed 140 ‡ (60 †).
!Always maintain a distance of at least12 in (30 cm) between the vehicle and thepower washer nozzle. Information about thecorrect distance is available from the equip-ment manufacturer.
Move the power washer nozzle around whencleaning your vehicle.
Do not aim directly at any of the following:
RTires
RDoor gaps, roof gaps, joints, etc.
RElectrical components
RBattery
RPlug-type couplings
RLight bulbs
RSeals
RTrim elements
RVentilation slots
Damaged seals or electrical componentscan lead to leaks or failures.
!Vehicles with HANDS-FREE ACCESS: if aSmartKey with KEYLESS-GO is within thedetection range of the KEYLESS-GOantenna, the following situations could leadto the unintentional opening of the trunk lid:
Rusing a car wash
Rusing a power washer
Make sure that the SmartKey is at least6.5 ft (2 m) away from the vehicle.
Cleaning the paintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similar items
to painted surfaces. You could otherwisedamage the paintwork.
Scratches, corrosive deposits, areas affectedby corrosion and damage caused by inade-quate care cannot always be completelyrepaired. In such cases, visit a qualified spe-cialist workshop.
XRemove dirt immediately, where possible,while avoiding rubbing too hard.
XSoak insect remains with insect removerand rinse off the treated areas afterwards.
XSoak bird droppings with water and rinse offthe treated areas afterwards.
XRemove tree resin, oils, fuels and greases byrubbing gently with a cloth soaked in petro-leum ether or lighter fluid
XRemove coolant and brake fluid with a moistcloth and clear water.
272Care
Maintenance and care