check engine MERCEDES-BENZ SLC 2017 Owners Manual

ASSYS TP LUS
Dis playin gas ervic em essage ........ 235
Hiding as ervic em essage .............. 235
Resetting th es ervic ei nterval dis-
play ................................................ 235
Se rvice message ............................ 235
Spe cial servic er equirements ........ .2 35
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 61
Function .......................................... .6 1
Switching off the alarm .................... 61
ATTENTIO NA SSIS T
Activating/deactivating ................. 171
Displa ym essage ............................ 192
Function/note s. ............................ 158
Audi o2 0
Switching on/of f. .......................... 212
Audi om en u( on -board computer) .... 168
Audi os ystem
see separate operating instructions
Authorized Mercedes-Benz Center
see Qualifie ds pecialist workshop
Authorized workshop
see Qualifie ds pecialist workshop
AUTO lights
Displa ym essage ............................ 189
see Lights
Automatic car was h( ca re) ............... 236
Automatic engine start (ECO start/
sto pf unction) .................................... 118
Automatic engine switch-off (ECO
start/sto pf unction) .......................... 118
Automatic headlamp mode ................ 93
Automatic transmission
Accelerator peda lp osition ............. 124
Changing gea r. .............................. 124
Displa ym essage ............................ 198
Drive progra m. ............................... 125
Drive progra md is play .................... 122
Driving tip s. ................................... 124
DYNAMIC SELECT button .............. 121
Emergency running mod e. ............. 129
Engaging drive position .................. 124
Engaging neutral ............................ 123
Engaging park position automa ti-
ca l
ly ............................................... 123
Engaging reverse gea r. .................. 123 Engaging the park position ............ 123
Gearshift recommendation ............ 127
Kickdow n. ...................................... 125
Manua ls hifting .............................. 126
Oil temperature (on-board com-
puter, SLC 43 AMG ). .................... 175
Overview ........................................ 122
Problem (malfunction) ................... 129
Pulling away ................................... 117
Selector lever ................................ 122
Starting the engine ........................ 117
Steering whee lp addl es hifters ...... 126
Transmission position display ........ 122
Transmission positions .................. 124
Automatic transmissio ne mer-
genc ym ode ....................................... 129
B Back button ....................................... 212
BAS (Brake Assist System) ................. 55
Battery (SmartKey)
Checking .......................................... 66
Important safety notes .................... 65
Replacing ......................................... 66
Battery (vehicle)
Charging ........................................ 248
Displa ym essage ............................ 191
Important safety notes .................. 246
Jump starting ................................. 249
Overview ........................................ 246
Belt
see Sea tb el ts
Blind Spo tA ssis t
Activating/deactivating ................. 171
Displa ym essage ............................ 193
Notes/function .............................. 159
Bluetooth ®
Connecting another mobile
phone ............................................ 216
Searching for am obil ep hone ........ 215
see also Digital Operator's Man-
ua l. ................................................. 211
Telephony ...................................... 214
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Displa ym essage ............................ 1844
Index ..

Hydroplaning ................................. 138
Icy roa ds urface s. .......................... 138
Limited braking efficiency on sal-
ted roads ....................................... 137
Snow chains .................................. 257
Subjecting brakes to al oa d. .......... 136
Wet roa ds urface ........................... 136
DVD video
Operating (on-board computer) ..... 169
see also Digital Operator's Man-
ua l. ................................................. 211
DYNAMI CS ELEC Tb utton .................. 121
EEASY-ENTRY feature
Activating/deactivating ................. 174
Function/notes ................................ 87
EASY-EXI Tf eature
Crash-responsive ............................. 88
Function/notes ................................ 87
Switching on/off ........................... 174
EBD (electronic brake forc ed istri-
bution)
Displa ym essag e. ........................... 181
Function/note s. ............................... 61
EC Od isplay
Function/note s. ............................ 134
On-board compute r. ...................... 166
EC Os tart/sto pf unction
Automati ce ngine start .................. 118
Automati ce ngine switch-off .......... 118
Deactivating/activating ................. 119
Genera li nformation ....................... 118
Important safety notes .................. 118
Introduction ................................... 118
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency
Automati cm easures afte rana cci-
dent ................................................. 51
Emergenc yr elease
Driver's doo r. ................................... 70
Trunk ............................................... 72
Vehicl e. ............................................ 70
Emergenc ys pare wheel
Genera ln otes ................................ 280
Important safety notes .................. 279 Removing ....................................... 280
Storage location ............................ 280
Stowing .......................................... 280
Technical data ............................... 280
Emergenc yT ensionin gD ev ices
Activation ......................................... 48
Emission sc on trol
Service and warranty information .... 23
Engine
Check Engine warning lamp ........... 207
Displa ym essage ............................ 190
ECO start/stop function ................ 118
Engine number ............................... 284
Irregula rr unning ............................ 120
Jump-starting ................................. 249
Starting problems .......................... 120
Starting the engine with the
SmartKey ....................................... 117
Starting with KEYLESS-GO ............. 117
Switching off .................................. 131
Tow-starting (vehicle ). .................... 253
Engine electronics
Note s. ............................................ 282
Problem (malfunction) ................... 120
Engine oil
Adding ........................................... 232
Additi ves ........................................ 287
C h ecking the oi ll ev el ..................... 232
Checking the oi ll ev el using the
dipstick .......................................... 232
Displa ym essage ............................ 191
Filling capacity ............................... 287
Genera ln otes ................................ 286
Note sa bout oi lg rade s. .................. 286
Note sono il level/consumption .... 232
Temperature (on-board computer,
SLC 43 AMG ). .............................. 175
Entering an address
see also Digital Operator's Man-
ua l. ................................................. 211
ESP ®
(Electroni cS tability Pro-
gram)
AMG menu (on-board computer) ... 175
Characteristics ................................. 58
Deactivating/activating (except
SLC 43 AMG ). ................................ 59
Deactivating/activating (SLC 43
AMG ). .............................................. 608
Index
..
..

see also Digital Operator's Man-
ual .................................................. 211
Selecting ....................................... .1 69
Searc h&S end
see also Digita lO perator's Man-
ua l. ................................................ .2 11
Seat belts
Adjusting the driver's and front-
passenger sea tb el t. ........................ 41
Correct usag e. ................................. 40
Fastening ......................................... 40
Important safety guideline s. ............ 39
Introduction ..................................... 38
Releasing ......................................... 41
Switching belt adjustment on/off
(on-board computer) ...................... 174
Warning lamp ................................. 203
Warning lamp (function) ................... 41
Seats
Adjusting (electrically) ..................... 84
Adjusting (manually) ........................ 84
Adjusting the 4-wa yl um ba rs up -
por t. ................................................. 84
Adjusting the hea dr estraint ............ 84
Correct driver' ss ea tp osition ........... 82
Important safety notes .................... 82
Overview .......................................... 82
Sea th eating problem ...................... 85
Storing settings (memory func-
tion) ................................................. 91
Switching AIRSCAR Fo n/of f. ........... 85
Switching sea th eating on/of f. ........ 85
Selecto rl ever
Positions ........................................ 122
Sensors (cleaning instructions) ....... 240
Servic em en u( on -board com-
puter) .................................................. 172
Servic em essage
see ASSYST PLUS
Servic ep roducts
Brake fluid ..................................... 287
Coolant (engine) ............................ 287
Engine oi l. ...................................... 286
Fue l. ............................................... 285
Important safety notes .................. 284
Refrigerant (air-conditioning sys-
tem) ............................................... 288
Washe rf luid ................................... 288 Setting the air distribution ............... 109
Setting the airflow ............................ 109
Setting the date/time format
see also Digital Operator's Man-
ua l. ................................................. 211
Setting the language
see al so Di gital Operator's Man-
u a l. ................................................. 211
Setting the time
see also Digital Operator's Man-
ua l. ................................................. 211
Settings
Factory (on-board computer) ......... 175
On-board compute r. ...................... 172
SETUP (on-board computer) ............. 175
Side impac ta ir bag ............................. 43
Side marker lamp
Changing bulb s( rear) ....................... 99
Side marker lamp (display mes-
sage) ................................................... 189
Side windows
Cleaning ......................................... 239
Convenience closing feature ............ 74
Important safety information ........... 72
Opening/closing (all ). ...................... 73
Opening/closing (front) ................... 73
Overview .......................................... 72
Problem (malfunction) ..................... 75
Resetting ......................................... 74
Reversing feature ............................. 72
SIRIU Ss er vices
see also Digital Operator's Man-
ua l. ................................................. 211
SmartKey
Changing the battery ....................... 66
Changing the programming ............. 64
Checking the battery ....................... 66
Displa ym essage ............................ 201
Door centra ll oc king/unlocking ....... 63
Important safety notes .................... 63
Los s. ................................................ 67
Mechanical key ................................ 65
Opening/closing the roo f. ............... 77
Overview .......................................... 63
Positions (ignition lock) ................. 115
Problem (malfunction) ..................... 67
Starting the engine ........................ 117 Index 15

SMS
see also Digital Operator's Man-
ual .................................................. 211
Snow chains ...................................... 257
Sockets
Center console .............................. 221
General notes ................................ 221
Sound
Switchin go n/off ........................... 212
Special seat belt retractor .................. 52
Specialist workshop ........................... .2 6
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 167
In the Instrument cluster ................. 31
Segment s. ..................................... 163
Selectin gt he display unit ............... 172
Sport handling mode
Activating/deactivating (SLC 43
AMG) ............................................... 60
Warning lamp ................................. 206
Standing lamps
Display message ........................... .1 89
Switching on/off .............................. 94
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 116
Steering
Display message ............................ 200
Steering wheel
Adjusting (electrically ). .................... 87
Adjusting (manually ). ....................... 86
Butto no verview ............................... 32
Buttons (on-board computer) ......... 164
Important safety notes .................... 86
Storing settings (memory func-
tion) ................................................. 91
Steering whee lp addle shifters ........ 126
Stopwatch (RACETIMER) ................... 176
Stowag ea reas ................................... 217
Stowag ec om partments
Armrest (under ). ............................ 217
Center console .............................. 218
Cu ph olders ................................... 219
Door ............................................... 218
Eyeglasses compartment ............... 218 Glove box ....................................... 217
Important safety information ......... 217
Rear wal l ........................................ 218
Sto
wag en et ................................... 218
Stowag en et ....................................... 218
Summe rt ires ..................................... 257
Sun visor ............................................ 220
Surround lighting (on-board com-
puter) .................................................. 173
Switchin ga ir-recirculatio nm ode
on/off ................................................. 111
Switchin gonm edi am ode
Via the device list .......................... 216
T Tachometer ........................................ 163
Tail lamps
Displa ym essage ............................ 189
see Lights
Tank content
Fue lg auge ....................................... 31
Technical data
Capacities ...................................... 284
Emergency spare whee l. ................ 280
Information .................................... 282
Tires/wheels ................................. 278
Vehicl ed at a. .................................. 289
TELEAID
Call priority .................................... 225
Emergency cal l. ............................. 222
Genera ln otes ................................ 221
MB info cal lb ut ton ........................ 224
Roadsid eA ssistance button .......... 223
Self-test ......................................... 222
System .......................................... 222
Vehicl eH ealth Check .................... 225
Telephone
Accepting ac al l( multifunction
steering wheel) .............................. 170
Authorizing am obil ep hone (con-
necting) ......................................... 215
Connecting am obil ep hone (gen-
era li nformation) ............................ 214
Displa ym essage ............................ 200
Menu (on-board computer) ............ 169
Numbe rf rom the phone boo k. ....... 170
Redialing ........................................ 17016
Index

Rejecting/endin gac all ................ .1 70
see also Digita lO perator's Man-
ua l. ................................................ .2 11
Switching between mobile
phone s. ......................................... .2 16
Temperature
Coolant .......................................... 164
Coolant (on-board computer, SLC
43 AMG) ...................................... 175
Engine oil (on-board computer,
SLC 43 AMG) ............................... 175
Outside temperature ..................... .1 63
Setting (climate control) ................ 108
Transmissio no il (on-board com-
puter, SLC 43 AMG) ..................... 175
Timing (RACETIMER) ......................... 176
Tire pressure
Calling up (on-board computer) ..... 262
Checking manually ........................ 261
Display message ............................ 196
Maximum ....................................... 261
Not reached (TIREFIT) .................... 244
Notes ............................................. 260
Reached (TIREFIT) .......................... 245
Recommended ............................... 258
Tire pressure los sw arning system
General notes ................................ 261
Important safety notes .................. 261
Restarting ...................................... 262
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 264
Function/notes ............................ .2 62
General notes ................................ 262
Important safety notes .................. 263
Radio type approval for the tire
pressure monitor ........................... 265
Restarting ...................................... 264
Warning lamp ................................. 210
Warning message .......................... 264
Tire-change tool kit ........................... 241
TIREFIT kit .......................................... 243
Important safety notes .................. 243
Storage location ............................ 241
Tire pressure not reached .............. 244
Tire pressure reached .................... 245
Tires
Aspect ratio (definition) ....... .......... 273 Avera g ew ei
ght of the vehicle
occupants (definition) .................... 272
Bar (definition) ............................... 272
Changing aw heel .......................... 274
Characteristics .............................. 272
Checking ........................................ 255
Curb weight (definition) ................. 273
Definition of terms ......................... 272
Direction of rotatio n. ..................... 274
Displa ym essage ............................ 196
Distribution of the vehicl eo ccu-
pants (definition) ............................ 274
DOT (Department of Transporta-
tion) (definition) ............................. 272
DOT, Tire Identification Number
(TIN) ............................................... 271
GAW R( Gr os sA xle Weight Rating)
(definition) ..................................... 272
GV W( Gr os sV ehicl eW eight) (def-
inition) ........................................... 273
GVWR (Gros sV ehicl eW eight Rat-
ing )( de finition) .............................. 273
Important safety notes .................. 255
Increased vehicl ew eigh td ue to
optiona le quipment (definition) ...... 272
Information on driving .................... 255
Kilopasca l( kPa )( de finition) ........... 273
Labeling (overview) ........................ 269
Loa db ea ring index (definition) ...... 274
Loa di ndex ..................................... 271
Loa di ndex (definition) ................... 273
M+S tire s. ...................................... 257
Maximu ml oa dona tire (defini-
tion) ............................................... 273
Maximu ml oaded vehicl ew eigh t
(definition) ..................................... 273
Maximu mp er missibl et ire pres-
sure (definition) ............................. 273
Maximu mt ire load ......................... 271
Maximu mt ire load (definition) ....... 273
MOExtended tire s. ......................... 257
Optiona le quipment weight (defi-
nition) ............................................ 274
Overview ........................................ 255
PSI (pounds pe rs quare inch )( de f-
inition) ........................................... 273
Repl acing ....................................... 274
Servi
ce life ..................................... 256 Index 17
......

Electronics .................................... .2 82
Equipment ....................................... 23
Individua ls ettings .......................... 172
Limited Warranty ............................ .2 7
Loading .......................................... 265
Locking (in an emergency) ............... 70
Locking (SmartKey) .......................... 63
Lowering ........................................ 278
Maintenance .................................... 24
Parking for al ong perio d. ............... 133
Pulling awa y. .................................. 117
Raising ........................................... 275
Reporting problems ......................... 26
Securing from rolling away ............ 275
Tow-starting ................................... 251
Towing away .................................. 251
Transporting .................................. 253
Unlocking (i nane mergency) ........... 70
Unlocking (SmartKey ). ..................... 63
Vehicl ed at a. .................................. 289
Vehicl eb attery
see Battery (vehicle)
Vehicl ed ata ....................................... 289
Vehicl ed imensions ........................... 289
Vehicl ee mergenc yl oc king ................ 70
Vehicl ei dentificatio nn umber
see VIN
Vehicl ei dentificatio np late .............. 283
Vehicl et oo lk it .................................. 241
Video
Operating the DVD ......................... 169
see also Digital Operator's Man-
ua l. ................................................. 211
VIN
Sea t. .............................................. 284
Type plate ...................................... 283
Voice Contro lS ystem
see Separate operating instructions
W
Warning and indicator lamps
ABS ................................................ 204
Active Brake Assist ........................ 209
Brake Assist ................................... 209
Brakes ........................................... 204
Check Engine ................................. 207
Coolant .......................................... 207 Distance Pilo tD ISTRONIC ............. 209
Distance warning ........................... 209
ESP ®
.............................................. 205
ESP ®
OFF ....................................... 206
Fue lt ank ........................................ 207
Genera ln otes ................................ 202
Parking brake ................................ 206
PASSENGER AIR BAG ...................... 38
Reserve fue l. .................................. 207
Restraint system ............................ 206
Sea tb el t. ....................................... 203
SPOR Th an dling mod e. .................. 206
Tire pressure monitor .................... 210
Warranty .............................................. 23
Washer fluid
Displa ym essage ............................ 201
Wheel and tire combinations
Tires ............................................... 278
Wheel bolt tightenin gt orque ........... 278
Wheel chock ...................................... 275
Wheels
Changing aw heel .......................... 274
Checking ........................................ 255
Cleaning ......................................... 238
Emergency spare whee l. ................ 279
Important safety notes .................. 255
Information on driving .................... 255
Interchanging/changing ................ 274
Mounting an ew whee l. .................. 277
Mounting aw heel .......................... 275
Overview ........................................ 255
Removing aw heel .......................... 277
Storing ........................................... 275
Tightening torque ........................... 278
Wheel size/tire size ....................... 278
Win ds cr een
Inserting and removing .................... 78
Preparing for installation .................. 78
see AIRGUIDE
Windows
see Sid ew in dows
Windshield
Defrosting ...................................... 109
Windshiel dw asher fluid
see Windshield washe rs ys tem
Windshiel dw asher system
Adding washe rf luid ....................... 234Index 19

Panic alarm X
To activate: press 3 button C for at
least one second.
Av isual and audible alarm is triggered if the
alarm system is armed. X
To deactivate: press 3 button C again.
or X
Insert the SmartKey into the ignition lock.
or X
Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehicle.
Occupant safety
Introduction to the restraint system The restraint system can reduce the risk of vehi-
cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces
to which vehicle occupants are subjected during
an accident.
The restraint system comprises: R
seat belt system R
air bags
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all
vehicle occupants: R
have fastened their seat belts correctly
( Y
page 40) R
have adjusted their seat and head restraint
properly ( Y
page 82).
As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position ( Y
page 82). You also have to make sure that an air bag can
inflate properly if deploye d( Y
page 42).
An air bag supplements ac orrectly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if, in the event of an accident, the protection
offered by the seat belt is sufficient, the air bags
are not deployed. When an accident occurs, only
the air bags that increase protection in that par-
ticular accident situation are deployed. How-
ever, seat belts and air bags generally do not
protect against object sp enetrating the vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" ( Y
page 48).
For information on children traveling with you in
the vehicle and on child restraint systems, see
"Children in the vehicle" ( Y
page 51).
Important safety notes
G WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even
fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system to accommodate ap erson
with disabilities, contact an authorized
Mercedes-Benz Center for details. USA only:
for further information contact our Customer
Assistanc eC enter at 1-800-FOR-MERCedes
(1 ‑ 800 ‑ 36 7 ‑ 6372).
Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and at
regular intervals while the engine is running.
Therefore, malfunction sc an be detected in
good time.Occupant safety 37
Safety Z

The u restraint system warning lamp in the
instrument cluster lights up when the ignition is
switched on. It goes out no later than af ew sec-
onds after the vehicle is started. The compo-
nent soft he restraint system are in operational
readiness.
Am alfunction has occurred if the u restraint
system warning lamp: R
does not light up after the ignition is switched
on R
does not go out after af ew seconds with the
engine running R
lights up again while the engine is running
G WARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or may not deploy as
intended during an accident .T his can affect
for example the Emergency Tensioning
Device or the air bag. This poses an increased
risk of injury or even fatal injury.
Have the restraint system checked and
repaired in aq ualified specialist workshop as
soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp C and
PASSENGER AIR BAG OFF indicator lamp D are
part of the Occupant Classification System
(OCS).
The indicator lamps display the status of the
front-passenger front air bag. R
PASSENGER AIR BAG ON lights up: the front-
passenger front air bag is enabled. If, in the
event of an accident ,a ll deployment criteria are met, the front-passenger front air bag is
deployed. R
PASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
Dependin gont he person in the front-passenger
seat, the front-passenger front air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during aj ourney.R
Children in ac hild restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the instal-
led child restraint system, and the age and
size of the child. Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" ( Y
page 44) and on "Chil-
dren in the vehicle" ( Y
page 51). There you
will also find instructions on rearward and
forward-facing child restraint systems on the
front-passenger seat. R
All other persons: depending on the classi-
fication of the person in the front-passenger
seat, the front-passenger front air bag is ena-
bled or deactivated ( Y
page 44). Be sure to
observe the notes on "Seat
belts“ ( Y
page 38) and "Air bags"
( Y
page 42). There you can also find infor-
mation on the correc ts eat position.
Seat belts
Introduction Seat belts are the most effective means of
restrictin gt he movemen tofv ehicle occupants
in the event of an accident or the vehicle rolling
over. This reduces the risk of vehicle occupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt helps to keep the vehicle
occupant in the best position in relation to the
air bag.
The seat belt system comprises: R
Seat belts R
Emergency Tensionin gD evices and seat belt
force limiters
If the seat belt is pulled by the belt loop quickly
or with aj erk ym ovement, the belt retractor
locks. The belt strap cannot be extracted any
further.38
Occupant safety
Safety

good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintain as afe distance
from the vehicle in front .D rive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Pay particular attention to the informa-
tion regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and tires"
section ( Y
page 255).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible.
ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such aw ay that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from as peed of about 5m ph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 54).
G WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally ,f urther driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at aq ualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 204) and dis- play messages which may be shown in the
instrument cluster ( Y
page 179).
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over. X
To make af ull brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a
reminder to take extr ac are while driving.
BAS (Brake Assist System)
General information BAS operates in emergenc yb raking situations.
If you depress the brake pedal quickly, BAS
automatically boosts the braking force, thus
shortening the stopping distance.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 54).
G WARNING
If BAS is malfunctioning, the braking distance
in an emergenc yb raking situation is
increased. There is ar isk of an accident.
In an emergenc yb raking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking X
Keep the brake pedal firmly depressed until
the emergenc yb raking situation is over.
ABS prevent st he wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated.Driving safety systems 55
Safety Z

Problem
Possible causes/consequences and P Solutions
The engine cannot be
started using the Smart-
Key. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary ( Y
page 248).
or X
Jump-start the vehicle ( Y
page 249).
or X
Consult aq ualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. The vehicle is locked. X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 66) and replace it if necessary
( Y
page 66).
If this does not work: X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from ap owerful source of radio waves.X
Start your vehicle with the SmartKey in the ignition lock.
You have lost aS mart-
Key. X
Have the SmartKey deactivated at aq ualified specialist workshop.X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
Doors
Important safety notes
G WARNING
If children are left unsupervised in the vehicle,
they could: R
open the doors, thus endangering other
people or road users. R
get out and disrupt traffic. R
operate the vehicle's equipment. Additionally, children could set the vehicle in
motion if, for example, they: R
release the parking brake. R
shifting the automatic transmission out of
park position P R
Start the engine.
There is ar isk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.68
Doors
Opening and closing