2019 MERCEDES-BENZ SL CLASS brake sensor

Brake Assist with cross-traffic
function ........................................... 61
Brake fluid (notes) ......................... 324
Display message............................ 206
EBD .................................................. 69
High-performance brake system .... 152
Important safety notes .................. 151
Maintenance .................................. 152
Parking brake ................................ 147
Riding tips ...................................... 151
Warning lamp ................................. 235
Breakdown assistance
Reflective safety jacket .................. 276
Where will I find...? ........................ 276
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting)................................... 33
C
California
Important notice for retail cus-
tomers and lessees .......................... 25
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
Car wash ........................................ 271
Exhaust pipe .................................. 275
Exterior lights ................................ 275
Matte finish ................................... 273
Notes............................................. 270
Paint .............................................. 272
Power washer ................................ 272
Rear view camera .......................... 275
Sensors ......................................... 275
Washing by hand ........................... 271
Wheels ........................................... 274
Windows ........................................ 274
Wiper blades .................................. 274
CD
see also Digital Operator's Man-
ual .................................................. 243
CD player (on-board computer)........ 196
Center console
Lower section .................................. 36
Lower section (AMG vehicles) .......... 37
Upper section .................................. 35
Central locking
Automatic locking (on-board
computer) ...................................... 201
Locking/unlocking (SmartKey)........ 74
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 59
On the front-passenger seat............ 59
Rearward-facing restraint system .... 59
Children
Special seat belt retractor ............... 57
Children in the vehicle
Important safety notes .................... 57
Cigarette lighter................................ 254
Cleaning
Mirror turn signal ........................... 275
Climate control
Automatic climate control (dual-
zone) .............................................. 116
Controlling automatically ............... 119
Cooling with air dehumidification .. 118
Defrosting the windows................. 121
Defrosting the windshield .............. 120
General notes ................................ 116
Indicator lamp ................................ 119
Information about using auto-
matic climate control ..................... 117
Maximum cooling .......................... 121
Overview of systems ...................... 116
Problem with the rear window
defroster ........................................ 121
Problems with cooling with air
dehumidification ............................ 119
Refrigerant ..................................... 326
Refrigerant filling capacity ............. 326
Setting the air distribution ............. 120
Setting the air vents ...................... 122
Setting the airflow ......................... 120
Setting the climate mode (AIR
FLOW) ............................................ 119
Setting the temperature ................ 119
Switching air-recirculation mode
on/off............................................ 122
Switching on/off........................... 118
Switching residual heat on/off ...... 122
Index7

Navigation menu ............................ 194
Operation ....................................... 191
RACETIMER ................................... 203
Service menu .................................199
Settings menu ............................... 199
Standard display............................ 193
Telephone menu ............................ 196
Trip menu ...................................... 193
Vehicle submenu ........................... 201
Video DVD operation ..................... 196
Operating safety
Declaration of conformity ................ 27
Important safety notes .................... 27
Operating system
see On-board computer
Operation
Digital Operator's Manual................ 23
Operator's Manual
Vehicle equipment ........................... 25
Outside temperature display........... 190
Overhead control panel...................... 38
P
Paddle shifters
see Steering wheel paddle shifters
Paint code number............................ 320
Paintwork (cleaning instructions)... 272
Panic alarm.......................................... 40
Panoramic roof
Operating the roller sunblind ........... 94
Parking
Important safety notes .................. 146
Parking brake ................................ 147
Position of exterior mirror, front-
passenger side ............................... 106
Rear view camera .......................... 179
see PARKTRONIC
Parking aid
see Active Parking Assist
see Exterior mirrors
see PARKTRONIC
Parking Assist PARKTRONIC
Deactivating/activating ................. 174
Important safety notes .................. 172
Problems (malfunctions) ................ 175
Sensor range................................. 173
Warning display ............................. 174
Parking brake
Applying automatically................... 148
Applying or releasing manually ...... 148
Display message ............................ 208
Electric parking brake .................... 147
Emergency braking ........................ 148
General notes ................................ 147
Releasing automatically................. 148
Warning lamp ................................. 238
Parking lamps
Switching on/off........................... 110
PARKTRONIC
Driving system ............................... 172
Function/notes............................. 172
PASSENGER AIR BAG
Display message ............................ 215
Indicator lamps ................................ 41
Problems (malfunction) .................. 215
Pets in the vehicle............................... 59
Phone book
see also Digital Operator's Man-
ual .................................................. 243
Power locks......................................... 81
Power washers.................................. 272
Power windows
see Side windows
PRE-SAFE®(anticipatory occu-
pant protection)
Display message ............................ 211
Operation ......................................... 55
PRE-SAFE®PLUS (anticipatory
occupant protection PLUS)
Operation ......................................... 56
Protection against theft
ATA (Anti-Theft Alarm system)......... 72
Immobilizer ...................................... 72
Protection of the environment
General notes .................................. 24
Pulling away
General notes ................................ 128
Pulling away (automatic trans-
mission)............................................. 128
Q
QR code
Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 29
Index15

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

Rsetting a more favorable seat position forthe front-passenger seat.
Rvehicles with a multicontour seat: increasingthe air pressure in the side bolsters of theseat backrest.
!Make sure that there are no objects in thefootwell or behind the seats. There is a dan-ger that the seats and/or objects could be
damaged when PRE-SAFE®is activated.
Should an accident not occur, the preventativemeasures taken are reversed. Certain settingsmust be made yourself.
XIf the seat belt pre-tensioning is notreduced, move the seat backrest backslightly.Seat belt pre-tensioning is released.
PRE-SAFE®PLUS (anticipatory occu-
pant protection system PLUS)
Introduction
PRE-SAFE®PLUS is only available in vehicleswith the Driving Assistance package.
Using the radar sensor system, PRE-SAFE®
PLUS is able to detect that a head-on or rear-end collision is imminent. In certain hazardous
situations, PRE-SAFE®PLUS takes pre-emptivemeasures to protect the vehicle occupants.
Important safety notes
The intervention of PRE-SAFE®PLUS cannotprevent an imminent collision.
The driver is not warned about the intervention
of PRE-SAFE®PLUS.
PRE-SAFE®PLUS does not intervene if thevehicle is backing up.
When driving, or when parking or exiting aparking space using Active Parking Assist,
PRE-SAFE®PLUS will not apply the brakes.
Function
PRE-SAFE®PLUS intervenes in certain situa-tions if the radar sensor system detects animminent head-on or rear-end collision.
PRE-SAFE®PLUS takes the following meas-ures depending on the hazardous situationdetected:
Rif the radar sensor system detects that ahead-on collision is imminent, the seat beltsare pre-tensioned.
Rif the radar sensor system detects that arear-end collision is imminent:
-the brake pressure is increased if thedriver applies the brakes when the vehicleis stationary.
-the seat belts are pre-tensioned.
The PRE-SAFE®PLUS braking application iscanceled:
Rif the accelerator pedal is depressed when agear is engaged
Rif the risk of a collision passes or is no lon-ger detected
Rif Active Distance Assist DISTRONIC indi-cates an intention to intervene
If the hazardous situation passes withoutresulting in an accident, the original settingsare restored.
Automatic measures after an acci-
dent
Immediately after an accident, the followingmeasures are implemented, depending on thetype and severity of the impact:
Rthe hazard warning lamps are switched on
Rthe emergency lighting is activated
Rthe vehicle doors are unlocked
Rthe front side windows are lowered
Rthe electrically adjustable steering wheel israised when the driver's door is opened
Rthe engine is switched off and the fuel sup-ply is cut off
Rvehicles with Mercedes me connect: auto-matic emergency call
56Occupant safety
Safety

The pulsating brake pedal can be an indicationof hazardous road conditions, and functions asa reminder to take extra care while driving.
BAS (Brake Assist System)
General information
BAS operates in emergency braking situations.If you depress the brake pedal quickly, BASautomatically boosts the braking force, thusshortening the stopping distance.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
GWARNING
If BAS is malfunctioning, the braking dis-
tance in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking
XKeep the brake pedal firmly depressed untilthe emergency braking situation is over.ABS prevents the wheels from locking.
The brakes will function as usual once yourelease the brake pedal. BAS is deactivated.
Brake Assist with cross-traffic func-
tion
General information
Brake Assist with cross-traffic function canhelp you to minimize the risk of a collision witha vehicle or a pedestrian and reduce theeffects of such a collision. If Brake Assist withcross-traffic function detects a danger of colli-sion, you are assisted when braking.
iObserve the "Important safety notes" sec-tion (Ypage 60).
Brake Assist with cross-traffic function is onlyavailable in vehicles with the Driving Assis-tance package.
For Brake Assist with cross-traffic function toassist you when driving, the radar sensor sys-tem and the camera system must be opera-tional.
The sensor system and camera system helpBrake Assist with cross-traffic function detectobstacles:
Rthat are in the path of your vehicle for anextended period of time
Rthat cross the path of your vehicle
In addition, pedestrians in the path of yourvehicle can be detected.
Brake Assist with cross-traffic function detectspedestrians using typical characteristics suchas body contours and the posture of a personstanding upright.
If the radar sensor system or the camera sys-tem is malfunctioning, Brake Assist with cross-traffic function is restricted or no longer availa-ble. The brake system is still available withcomplete brake boosting effect and BAS.
iObserve the restrictions described in the"Important safety notes" section(Ypage 61).
Important safety notes
GWARNING
Active Brake Assist with cross-traffic func-
tion cannot always clearly identify objects
and complex traffic situations.
In such cases, Active Brake Assist with
cross-traffic function might:
Rissue an unnecessary warning or brake
Rissue no warning or not brake
Always pay careful attention to the traffic
situation; do not rely on the Active Brake
Assist with cross-traffic function alone.
Always be ready to brake and possibly take
evasive action.
GWARNING
Brake Assist with cross-traffic function can-
not always clearly identify people, particu-
larly if they are moving. Brake Assist with
cross-traffic function cannot intervene in
these cases. There is a risk of an accident.
Driving safety systems61
Safety
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Always pay careful attention to the traffic
situation and be ready to brake.
GWARNING
Active Brake Assist with cross-traffic func-
tion does not react:
Rto small people, e.g. children
Rto animals
Rto oncoming vehicles
Rwhen cornering
As a result, Active Brake Assist with cross-
traffic function may not warn you or engage
in all critical situations. There is a risk of an
accident.
Always pay careful attention to the traffic
situation and be ready to brake.
In the event of snowfall or heavy rain, the rec-ognition can be impaired.
Recognition by the radar sensor system is alsoimpaired if:
Rthere is dirt on the sensors or anything elsecovering the sensors
Rthere is interference by other radar sources
Rthere are strong radar reflections, for exam-ple in parking garages
Ra narrow vehicle is traveling in front, e.g. amotorbike
Ra vehicle is traveling in front on a differentline
Rvehicles quickly move into the radar sensorsystem detection range
Recognition by the camera system is alsoimpaired in the event of:
Rdirt on the camera or if the camera is cov-ered
Rglare on the camera system, e.g. from thesun being low in the sky
Rdarkness
Ror if:
-pedestrians move quickly, e.g. into thepath of the vehicle
-the camera system no longer recognizes apedestrian as a person due to specialclothing or other objects
-a pedestrian is concealed by otherobjects
-the typical outline of a person is not dis-tinguishable from the background
Following damage to the front end of the vehi-cle, have the configuration and operation ofthe radar sensors checked at a qualified spe-cialist workshop. This also applies to collisionsat slow speeds where there is no visible dam-age to the front of the vehicle.
Following damage to the windshield, have theconfiguration and operation of the camera sys-tem checked at a qualified specialist work-shop.
Function
To avoid a collision, Brake Assist with cross-traffic function calculates the brake force nec-essary if:
Ryou approach an obstacle, and
RBrake Assist with cross-traffic function hasdetected a risk of collision
When driving at a speed under 20 mph(30 km/h):if you depress the brake pedal,Brake Assist with cross-traffic function is acti-vated. The increase in brake pressure will becarried out at the last possible moment.
When driving at a speed above 20 mph(30 km/h):if you depress the brake pedalsharply, Brake Assist with cross-traffic func-tion automatically increases the brake pres-sure to a degree suited to the traffic situation.
Brake Assist with cross-traffic function pro-vides braking assistance in hazardous situa-tions with vehicles in front within a speedrange between 4 mph (7 km/h) and 155 mph(250 km/h).
62Driving safety systems
Safety

Up to a speed of approximately 44 mph(70 km/h), Brake Assist with cross-trafficfunction may react to:
Rstationary objects in the path of your vehi-cle, e.g. stopped or parked vehicles
Rpedestrians in the path of your vehicle
Robstacles crossing your path which move inthe detection range of the sensors and aredetected
iIf Brake Assist with cross-traffic functionrequires a particularly high braking force,preventative passenger protection measures
(PRE-SAFE®) are activated at the same time(Ypage 55).
XKeep the brake pedal depressed until theemergency braking situation is over.ABS prevents the wheels from locking.
Brake Assist with cross-traffic function isdeactivated and the brakes function as usualagain if:
Ryou release the brake pedal
Rthere is no longer a risk of collision
Rno obstacle is detected in front of your vehi-cle
Ryou depress the accelerator pedal
Ryou activate kickdown
Active Brake Assist
General information
iObserve the "Important safety notes" sec-tion (Ypage 60).
Active Brake Assist consists of a distancewarning function with an autonomous brakingfunction and Adaptive Brake Assist.
Active Brake Assist can help you to minimizethe risk of a collision with the vehicle in frontor reduce the effects of such a collision.
If Active Brake Assist detects that there is arisk of collision, you will be warned visuallyand acoustically. If you do not react to the vis-ual collision warning or the warning tone,autonomous braking can be initiated in criticalsituations. If you apply the brake yourself in acritical situation, Adaptive Brake Assist of theActive Brake Assist system supports you.
Important safety notes
In particular, the detection of obstacles can beimpaired if:
Rthere is dirt on the sensors or anything elsecovering the sensors
Rthere is snow or heavy rain
Rthere is interference by other radar sources
Rthere are strong radar reflections, for exam-ple in parking garages
Ra narrow vehicle is traveling in front, e.g. amotorbike
Ra vehicle is traveling in front on a differentline
Ryou are driving a new vehicle or servicing onthe Active Brake Assist system has justbeen carried out
Observe the important safety notes in the"Breaking-in notes" section (Ypage 125).
Following damage to the front end of the vehi-cle, have the configuration and operation ofthe radar sensor checked at a qualified spe-cialist workshop. This also applies to collisionsat slow speeds where there is no visible dam-age to the front of the vehicle.
Activating/deactivating
Active Brake Assist is automatically activeafter switching on the ignition.
You can activate or deactivate Active BrakeAssist using the on-board computer(Ypage 198). When deactivated, the distancewarning function and the autonomous brakingfunction are also deactivated.
If Active Brake Assist is deactivated, the

Adaptive Brake Assist provides braking assis-tance in hazardous situations at speeds above4 mph (7 km/h). It uses radar sensor technol-ogy to assess the traffic situation.
Up to a speed of approximately 155 mph(250 km/h), Adaptive Brake Assist is capableof reacting to moving objects that havealready been detected as such at least onceover the period of observation.
Up to a speed of approximately 44 mph(70 km/h), Adaptive Brake Assist reacts tostationary obstacles.
If Adaptive Brake Assist demands particularlyhigh braking force, preventative passenger
protection measures (PRE-SAFE®) are activa-ted simultaneously (Ypage 55).
XKeep the brake pedal depressed until theemergency braking situation is over.ABS prevents the wheels from locking.
The brakes will work normally again if:
Ryou release the brake pedal
Rthere is no longer any danger of a collision
Rno obstacle is detected in front of your vehi-cle
Adaptive Brake Assist is then deactivated.
Important safety notes
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake. Terminate
the intervention in a non-critical driving sit-
uation.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, the Adaptive Brake Assist may
not intervene in all critical conditions. There
is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
Always adapt your speed to suit the prevail-
ing road and traffic conditions.
Due to the nature of the system, particularlycomplicated but non-critical driving conditionsmay also cause Adaptive Brake Assist to inter-vene.
If Adaptive Brake Assist is not available due toa malfunction in the radar sensor system, thebrake system remains available with full brakeboosting effect and BAS.
Adaptive brake lights
iObserve the "Important safety notes" sec-tion (Ypage 60).
If you brake sharply from a speed of more than50 km/h or if braking is assisted by BAS orBrake Assist with Cross-Traffic Assist, thebrake lamps flash rapidly. In this way, traffictraveling behind you is warned in an evenmore noticeable manner.
If you brake sharply from a speed of more than70 km/h to a standstill, the hazard warninglamps are activated automatically. If thebrakes are applied again, the brake lamps lightup continuously. The hazard warning lampsswitch off automatically if you travel fasterthan 10 km/h. You can also switch off thehazard warning lamps using the hazard warn-ing button (Ypage 111).
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
ESP®monitors driving stability and traction,i.e. power transmission between the tires andthe road surface.
If ESP®detects that the vehicle is deviatingfrom the direction desired by the driver, one ormore wheels are braked to stabilize the vehi-cle. The engine output is also modified to keep
Driving safety systems65
Safety
Z