tires MERCEDES-BENZ CLA 2018 Owners Manual

Feature s. ............................................. 242
Maintenanc ea nd care ...................... 257
Engine compartment ........................... 257
ASSYST PLUS ...................................... 261
Care ..................................................... 262
Breakdown assistance ..................... 269
Where will If ind...? .............................. 269
Fla tt ire ................................................ 271
Battery (vehicle) .................................. 276
Jump-starting ....................................... 278
Towing and tow-starting ...................... 281
Fuses ................................................... 284
Wheels and tires ............................... 287
Important safety notes ........................ 287
Operation ............................................ 287
Winte ro peration .................................. 289
Tir ep ressure ....................................... 290
Loading the vehicle .............................. 298
All abou tw heel sa nd tire s. .................. 301
Changing aw heel ................................ 307
Wheel and tire combinations ............... 312
Technical data ................................... 313
Information regarding technical data ... 313
Vehicl ee le ctronics .............................. 313
Identification plates ............................. 314
Service products and filling capaci-
ties ...................................................... 315
Vehicl ed at a. ........................................ 320 Contents 3

Storing and maintaining current
speed ............................................. 150
Cup holder
Center console .............................. 243
Important safety notes .................. 242
Rear compartment ......................... 243
Custome rA ssis tance Center
(CAC) ..................................................... 28
Custome rR elations Department ....... 28
DDashboard
see Instrument cluster
Data
see Technica ld at a
Daytime runnin gl amps
Displa ym essage ............................ 204
Function/note s. ............................ 100
Switching on/of f( on -board com-
puter) ............................................. 187
Declarations of conformity ................. 27
Diagnostic sc on nection ...................... 28
Digital Operator's Manual
Hel p. ................................................ 23
Introduction ..................................... 23
Digital speedometer ......................... 181
DIREC TS ELECT lever
Automati ct ransmissio n. ................ 130
Display messages
ASSYST PLU S. ............................... 261
Calling up (on-board computer) ..... 191
Driving systems ............................. 207
Engine ............................................ 205
Genera ln otes ................................ 190
Hiding (on-board computer) ........... 191
Lights ............................................. 202
Safety systems .............................. 192
SmartKey ....................................... 216
Tires ............................................... 211
Vehicl e. .......................................... 213
Distance Pilo tD IS TRONIC
Activating ....................................... 152
Calling up as peed ......................... 153
Cruise control lever ....................... 152
Displa yM essage ............................ 209
Displays in the instrument cluster .. 155
Driving tip s. ................................... 156 Function/note s. ............................ 151
Important safety notes .................. 151
Setting as peed .............................. 154
Setting the specified minimum
distance ......................................... 154
Stopping ........................................ 154
Storing as peed .............................. 153
Switching off .................................. 155
Distance recorder ............................. 180
Distance warnin g( wa rning lamp) .... 227
Distance warnin gf unction
Function/note s. ............................... 62
Warning lamp ................................. 227
Doors
Automati cl oc king (on-board com-
puter) ............................................. 187
Automati cl oc king (switch) ............... 77
Central locking/unlocking
(SmartKey ). ...................................... 70
Control panel ................................... 38
Displa ym essage ............................ 216
Emergency locking ........................... 77
Emergency unlocking ....................... 77
Important safety notes .................... 76
Opening (fro mi nside ). ..................... 76
D ri nking and driving ......................... 144
Drive program
Automati ct ransmission ................. 134
Displa y. .......................................... 132
Displa y( DIRECT SELECT lever) ...... 130
Driver's door
see Doors
Drivin ga broad
Mercedes-Benz Service ................. 262
Drivin gonf loode dr oads .................. 148
Drivin gs afety system
Active Brake Assist .......................... 62
Braking assistance appropriate to
the situation ..................................... 63
Drivin gs afety systems
ABS (Anti-lock Braking System) ....... 61
ADAPTIV EB RAK E. ............................ 68
BAS (Brake Assist System) .............. 61
Distance warning function ............... 62
EBD (electroni cb rake force distri-
bution) ............................................. 678
Index

Instrumen tc luster
Overview .......................................... 33
Setting s. ........................................ 18 6
Warn in ga nd indicator lamps ........... 33
Instrument cluster lighting .............. 176
Interior lighting
Control .......................................... .1 04
Overview ........................................ 103
Reading lamp ................................. 103
iPod ®
see also Digita lO perator's Man-
ua l. ................................................ .2 29
JJack
Storage location ............................ 270
Using ............................................. 309
Jump starting (engine) ..................... .2 78
KKe yp ositions
Start/Stop button .......................... 122
KEYLESS-GO
Convenience closing feature ............ 83
Deactivation ..................................... 71
Locking ............................................ 71
Unlocking ......................................... 71
Kickdown
Driving tips ................................... .1 34
Manual gearshifting ....................... 138
Kne eb ag .............................................. 46
L
Lamps
see Warning and indicator lamps
Lane Keepin gA ssist
Activating/deactivating (on-
board computer) ............................ 186
Display message ............................ 208
Function/informatio n. ................... 174
Lan eT racking package ..................... 172
Lap time (RACETIMER) ...................... 189
LATCH-type (ISOFIX )c hild seat
anchors ................................................ 57
License plate lamp (display mes-
sage) ................................................... 203 Light senso r( display message) ....... 204
Lights
Adaptive Highbeam Assist ............. 102
Automati ch eadlamp mod e. ........... 100
Fogged up headlamp s. ................... 103
Hazard warning lamps ................... 102
Hig hb ea mf lashe r. ......................... 101
High-beam headlamp s. .................. 101
Light switch ................................... 100
Low-bea mh eadlamp s. ................... 101
Parking lamps ................................ 101
Rear fog lamp ................................ 101
Setting exterio rl ig hting ................. 100
Standing lamps .............................. 101
Switching the daytime running
lamps on/of f( on -board com-
puter) ............................................. 187
Turn signal s. .................................. 101
Loadin gg uidelines ............................ 237
Locking
see Central locking
Locking (doors)
Automati c. ....................................... 77
Emergency locking ........................... 77
From inside (central locking but-
ton) .................................................. 76
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 187
Low-beam headlamps
Displa ym essage ............................ 202
Replacing bulb s. ............................ 105
Switching on/of f. .......................... 101
Lumbar support
Adjusting the 4-wa yl um ba rs up -
por t. ................................................. 93
M
M+S tires ............................................ 289
Malfunctio nm essage
see Displa ym essages
Matte finis h( clea ning instruc-
tions) .................................................. 264
mbrace
Call priority .................................... 248
Displa ym essage ............................ 19712
Index

Start-off assist
Activating ....................................... 158
Important safety notes .................. 158
Start/Stop button
Removing ....................................... 123
Starting the engine ........................ 124
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 123
STEER CONTROL ................................. .6 8
Steering
Display message ........................... .2 16
Steering assistant STEE RC ON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (manually ). ....................... 95
Butto no verview ............................... 34
Buttons (on-board computer) ......... 177
Cleaning ......................................... 267
Important safety notes .................... 95
Paddle shifters ............................... 136
Steering whee lp addle shifters ........ 136
Stopwatch (RACETIMER) ................... 189
Stowag ec om partments
Armrest (front) ............................... 238
Armrest (under ). ............................ 239
Center console .............................. 238
Center console (rear) ..................... 239
Cu ph olders ................................... 242
Eyeglasses compartment ............... 238
Glove box ....................................... 238
Important safety information ......... 237
Ma pp ockets .................................. 239
Stowag en et ................................... 239
Stowag en et ....................................... 239
Stowag ew el lb enea th the trunk
floor .................................................... 241
Summe rt ires ..................................... 289
Sun visor ............................................ 243
Suspension setting
AMG adaptive sport suspension
system ........................................... 159
Switchin ga ir-recirculatio nm ode
on/off ................................................. 119
Switchin gonm edi am ode
Via the device list .......................... 235 T Tachometer ........................................ 176
Tail lamps
Displa ym essage ............................ 203
see Lights
Tank
see Fue lt ank
Tank content
Fue lg auge ....................................... 33
Technical data
Capacities ...................................... 315
Information .................................... 313
Tires/wheels ................................. 312
Vehicl ed at a. .................................. 320
Telephone
Accepting ac al l( multifunction
steering wheel) .............................. 184
Authorizing am obil ep hone (con-
necting) ......................................... 233
Authorizing am obil ep hone via the
device manager (connecting) ......... 234
Connecting am obil ep hone
(device manager ). .......................... 234
Connecting am obil ep hone (gen-
era li nformation) ............................ 233
Displa ym essage ............................ 216
Introduction ................................... 183
Menu (on-board computer) ............ 183
Numbe rf rom the phone boo k. ....... 184
Redialing ........................................ 184
Rejecting/ending ac al l. ................ 184
see also Digital Operator's Man-
ua l. ................................................. 229
Temperature
Coolant .......................................... 177
Coolant (on-board computer,
Mercedes-AM Gv ehicles) ............... 188
Engine oi l( on -board computer,
Mercedes-AM Gv ehicles) ............... 188
Outsid et emperature ...................... 176
Setting (climate control ). ............... 116
Transmission oi l( on -board com-
puter, Mercedes-AM Gv ehicles) ..... 188
Through-loadin gf eature ................... 239
Timing (RACETIMER) ......................... 189
Tire pressure
Calling up (on-board computer) ..... 29418
Index

Checkin gm anually ........................ 293
Dis play message ............................ 211
Maximum ...................................... .2 93
Not reached (TIREFIT) .................... 274
Notes ............................................. 292
Reached (TIREFIT) .......................... 274
Recommended ............................... 290
Tire pressure los sw arning system
General notes ................................ 293
Important safety notes .................. 294
Restarting ...................................... 294
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 296
Function/notes ............................ .2 94
General notes ................................ 294
Important safety notes .................. 295
Radio type approval for the tire
pressure monitor ........................... 297
Restarting ...................................... 297
Warning lamp ................................. 228
Warning message .......................... 296
TIREFIT kit .......................................... 272
Important safety notes .................. 272
Storage location ............................ 271
Tire pressure not reached .............. 274
Tire pressure reached .................... 274
Tires
Aspect ratio (definition) ................. 307
Averag ew eight of the vehicle
occupants (definition) .................... 305
Bar (definition) ............................... 305
Changing aw heel .......................... 307
Characteristics .............................. 305
Checking ........................................ 287
Curb weight (definition) ................. 306
Definition of terms ......................... 305
Direction of rotatio n. ..................... 308
Displa ym essage ............................ 211
Distribution of the vehicl eo ccu-
pants (definition) ............................ 307
DOT (Department of Transporta-
tion) (definition) ............................. 305
DOT, T ire Identification Number
(
TIN) ............................................... 305
GAW R( Gr os sA xle Weight Rating)
(definition) ..................................... 306
Genera ln otes ................................ 312 GV W( Gr os sV ehicl eW eight) (def-
inition) ........................................... 306
GVWR (Gros sV ehicl eW eight Rat-
ing )( de finition) .............................. 306
Important safety notes .................. 287
Increased vehicl ew eigh td ue to
optiona le quipment (definition) ...... 306
Information on driving .................... 287
Kilopasca l( kPa )( de finition) ........... 306
Labeling (overview) ........................ 302
Loa db ea ring index (definition) ...... 307
Loa di ndex ..................................... 304
Loa di ndex (definition) ................... 306
M+S tire s. ...................................... 289
Maximu ml oa dona tire (defini-
tion) ............................................... 306
Maximu ml oaded vehicl ew eigh t
(definition) ..................................... 306
Maximu mp er missibl et ire pres-
sure (definition) ............................. 306
Maximu mt ire load ......................... 304
Maximu mt ire load (definition) ....... 306
MOExtended tire s. ......................... 289
Optiona le quipment weight (defi-
nition) ............................................ 307
PSI (pounds pe rs quare inch )( de f-
inition) ........................................... 307
Replacing ....................................... 307
Service life ..................................... 288
Sidewal l( de finition) ....................... 307
Speed rating (definition) ................ 306
Storing ........................................... 308
Structure and characteristics
(definition) ..................................... 305
Summer tire s. ................................ 289
Temperature .................................. 302
TIN (Tire Identification Number)
(definition) ..................................... 307
Tire bead (definition) ...................... 307
Tire pressure (definition) ................ 307
Tire pressures (recommended ). ..... 306
Tire size (data ). .............................. 312
Tire size designation, load-beari ng
ca p
acity, speed rating .................... 302
Tire trea d. ...................................... 288
Tire trea d( de finition) ..................... 307
Tota ll oa dl im it (definition) ............. 307
Tractio n. ........................................ 301 Index 19

Lowering ........................................ 311
Maintenance .................................... 26
Parking for al ong perio d. ............... 143
Pulling awa y. .................................. 125
Raising ........................................... 309
Reporting problems ......................... 28
Securing from rolling away ............ 309
Transporting .................................. 283
Unlocking (i nane mergency) ........... 77
Unlocking (SmartKey ). ..................... 70
Vehicl ed at a. .................................. 320
Vehicl ed ata
Roof load (maximum) ..................... 320
Trunk load (maximum) ................... 320
Vehicl ed imensions ........................... 320
Vehicl ee mergenc yl oc king ................ 77
Vehicl ei dentificatio nn umber
see VIN
Vehicl ei dentificatio np late .............. 314
Vehicl et oo lk it .................................. 270
Ventilation
Setting the vents ........................... 120
Video
Operating the DVD ......................... 183
see also Digital Operator's Man-
ua l. ................................................. 229
VIN
Sea t. .............................................. 315
Type plate ...................................... 314
W
Warning and indicator lamps
ABS ................................................ 220
Active Brake Assist ........................ 227
Brakes ........................................... 219
Check Engine ................................. 224
Coolant .......................................... 225
Distance warning ........................... 227
ESP ®
.............................................. 221
ESP ®
OFF ....................................... 222
Fue lt ank ........................................ 224
Overview .......................................... 33
PASSENGER AIR BAG ...................... 41
Reserve fue l. .................................. 224
Restraint system ............................ 224
Sea tb el t. ....................................... 218
SPOR Th an dling mod e. .................. 222 Tire pressure monitor .................... 228
Warning triangle ................................ 270
Warranty .............................................. 25
Washer fluid
Displa ym essage ............................ 216
Weather display (COMAND)
see also Digital Operator's Man-
ua l. ................................................. 229
Wheel and tire combinations
Tires ............................................... 312
Wheel bolt tightenin gt orque ........... 311
Wheel chock ...................................... 309
Wheels
Changing aw heel .......................... 307
Checking ........................................ 287
Cleaning ......................................... 264
Important safety notes .................. 287
Information on driving .................... 287
Interchanging/changing ................ 307
Mounting an ew whee l. .................. 310
Removing aw heel .......................... 310
Storing ........................................... 308
Tightening torque ........................... 311
Wheel size/tire size ....................... 312
Wheel sa nd tires
Changing aw heel .......................... 308
Window curtai na ir bag
Displa ym essage ............................ 199
Operation ......................................... 47
Windows
see Sid ew in dows
Windshield
Defrosting ...................................... 117
Windshiel dw asher system
Adding washe rf luid ....................... 260
Important safety notes .................. 319
Windshiel dw ip ers
Displa ym essage ............................ 216
Problem (malfunction) ................... 109
Replacing the wipe rb lade s. ........... 108
Switching on/of f. .......................... 107
Winter driving
Slippery roa ds ur faces ................... 148
Snow chains .................................. 290
Winter operation
Genera ln otes ................................ 289
Wi n
ter tires
M+S tire s. ...................................... 289Index 21

systems, e.g. the brake system. Use only genu-
ine Mercedes-Benz parts or parts of equa lq ual-
ity. Only use tires, wheels and accessories that
have been specifically approved for your vehi-
cle.
Genuine Mercedes-Benz parts are subject to
strict quality control. Every part has been spe-
cifically developed ,m anufactured or selected
for and adapted to Mercedes-Benz vehicles.
Therefore, only genuine Mercedes-Benz parts
should be used.
More than 300,000 different genuine
Mercedes-Benz parts are available for
Mercedes-Benz models.
All authorized Mercedes-Benz Centers maintain
as upply of genuine Mercedes-Benz parts for
necessary service and repair work. In addition,
strategically located parts delivery centers pro-
vide quick and reliable parts service.
Always specify the vehicle identification number
(VIN) when ordering genuine Mercedes-Benz
parts ( Y
page 314).
Operator's Manual
Vehicle equipment
i This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of this Oper-
ator's Manual going to print. Country-specific
differences are possible .B ear in mind that
your vehicle may not feature all functions
described here. This also applies to safety-
relevant systems and functions. The equip-
ment in your vehicle may therefore differ from
that shown in the descriptions and illustra-
tions.
The original purchase agreement lists all sys-
tems installed in your vehicle.
Should you have any questions concerning
equipment and operation, please consult an
authorized Mercedes-Benz Center.
The Operator's Manual and Maintenance Book-
let are important documents and should be kept
in the vehicle. Service and vehicl eo peration
Warranty The Limited Warranty for your vehicle applies in
accordance with the warranty terms and condi-
tions in the Service and Warranty Information
booklet.
Your authorized Mercedes-Benz Center will
replace and repair all factory-installe dp arts in
accordance with the following warranty terms
and conditions: R
New Vehicle Limited Warranty R
Emission System Warranty R
Emission Performance Warranty R
California, Connecticut ,M aine, Massachu-
setts, New York, Pennsylvania, Rhode Island
and Vermont Emission Control System War-
ranty R
State warranty enforcemen tl aws (lemon
laws)
Replacement parts and accessories are covered
by the Mercedes-Benz Parts and Accessories
warranties. These are available at any author-
ized Mercedes-Benz Center.
i Should you lose your Service and Warranty
Information booklet, have an authorized
Mercedes-Benz Center arrange for ar eplace-
ment. The new Service and Warranty Infor-
mation booklet will be posted to you.
Information for customers in Califor-
nia Under California law you may be entitled to a
replacement of your vehicle or ar efund of the
purchase price or lease price, if after ar eason-
able number of repair attempts Mercedes-Benz
USA, LLC and/or its authorized repair or service
facilities fail to fix one or more substantial
defects or malfunctions in the vehicle that are
covered by its express warranty.
During the period of 18 months from original
delivery of the vehicle or the accumulation of
18,000 miles (approximately 29,000 km) on the
odometer of the vehicle, whichever occurs first,
ar easonable number of repair attempts is pre-
sumed for ar etail buye rorl essee if one or more
of the following occurs:
(1) the same substantial defect or malfunction
results in ac ondition that is likely to causeService and vehicle operation 25
Introduction Z

Operating safety
Important safet yn otes
G WARNING
If you do not have the prescribed service/
maintenanc ew ork or any required repairs
carried out, this can result in malfunctions or
system failures. There is ar isk of an accident.
Always have the prescribed service/mainte-
nanc ew ork as well as any required repairs
carried out at aq ualified specialist workshop.
G WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system. There is ar isk
of fire.
When driving off road or on unpaved roads,
chec kt he vehicle's underside regularly. In
particular, remove parts of plants or other
flammable materials which have become
trapped. In the case of damage, contact a
qualified specialist workshop.
G WARNING
Modifications to electronic components, their
software as well as wiring can impair their
function and/or the function of other net-
worked components. In particular, systems
relevant to safety could also be affected. As a
result, these may no longer function as inten-
ded and/or jeopardiz et he operatin gs afety of
the vehicle. There is an increased risk of an
acciden ta nd injury.
Never tamper with the wiring as well as elec-
tronic component sort heir software. You
should have all work to electrical and elec-
tronic equipment carried out at aq ualified
specialist workshop. ! There is ar isk of damage to the vehicle if: R
the vehicle becomes stuck ,e .g. on ah igh
curb or an unpaved road R
you drive too fast over an obstacle, e.g. a
curb, as peed bump or ap othole in the roadR
ah eavy objec ts trikes the underbody or
parts of the chassis
In situation sl ike this, the body, the under-
body, chassis parts, wheels or tires could be
damaged without the damage being visible.
Components damaged in this way can unex-
pectedly fail or, in the case of an accident, no
longer withstand the loads they are designed
to.
If the underbody paneling is damaged, com-
bustible materials such as leaves, grass or
twigs can gather between the underbody and
the underbody paneling. If these materials
come in contact with hot parts of the exhaust
system, they can catc hf ire.
In such situations, have the vehicle checked
and repaired immediately at aq ualified spe-
cialist workshop. If on continuin gy our jour-
ney you notice that driving safety is impaired,
pull over and stop the vehicle immediately,
paying attention to road and traffic condi-
tions. In such cases, consult aq ualified spe-
cialist workshop.
Declarations of conformity USA: "The wireless devices of this vehicle com-
ply with Part 15 of the FCC Rules. Operation is
subject to the two following two conditions :1 )
These devices may not cause harmful interfer-
ence, and 2) These devices must accept any
interference received, including interference
that may cause undesired operation .C hanges
or modifications not expressly approved by the
party responsible for complianc ec ould void the
user’s authorit ytoo perate the equipment."
Canada: "The wireless devices of this vehicle
comply with Industry Canada license-exempt
RSS standard(s). Operation is subject to the fol-
lowing two conditions :( 1) These devices may
not cause interference, and (2) These devices
must accept any interference, including inter-
ference that may cause undesired operation of
the device."Operating safety 27
Introduction Z

Drivin gs af et ys ystems
Overview of drivin gs af et ys ystemsIn this section ,y ou will fin di nformati on about
th ef ol lowin gd rivin gs afet ys ystems :R
AB S( A nti-lock B rakin g S ystem)
( Y
page 61) R
BA S( B rak e A ssist S ystem) ( Y
page 61)R
Active Brak eA ss is t( Y
page 62 )R
ES P ®
( E lectronic S ta bility P ro gram)
( Y
page 64) R
EB D( E lectroni c B rak ef orce D istribution )
( Y
page 67 )R
ADAPTIV EB RAKE ( Y
page 68 )R
STEE RC ONTROL ( Y
page 68)
Important safet yn otesIf you fail to adapt your drivin gs ty le or if you are
inattentive ,t he drivin gs afet ys ystems can nei-
ther reduce th er is kofana cciden tn or override
th el aws of physics. Driving safet ys ystems are
merely aids designed to assist driving. You are
responsible fo rm aintainin gt he distanc etot he
vehicle in front, fo rv ehicle speed, fo rb raking in
goo dt im e, and fo rs ta yin ginl ane. Always adapt
your drivin gs ty le to suit th ep revailin gr oa da nd
weather condition sa nd maintain as af ed istanc e
from th ev ehicle in front. Drive carefully.
The drivin gs afet ys ystems described only wor k
as effectively as possible when there is ade-
quat ec ontac tb etween th et ir es and th er oa d
surface. Please pay special attention to th e
note sont ir es ,r ecommended minimum tire
tread depths, etc. ( Y
page 288).
In wintr yd rivin gc onditi ons, always use winte r
tires (M+ St ir es )a nd if necessary ,s now chains.
Onl yint hi sw ay will the driving safety systems
describe dint hi ss ection work as effectively as
possible.
ABS (Anti-lock Brakin gS ystem)
General information
ABS regulate sb rake pressure in such aw ay that
the wheels do not lock when yo ub rake. This
allows yo utoc ontinue steering the vehicl ew he n
braking. The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goe so ut when the engine is running.
ABS works from as peed of abou t5m ph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, eve nw he ny ou
onl yb rake gently.
Important safety notes
i Observe the "Important safety notes "s ec-
tio n( Y
page 61).
G WARNING
If ABS is faulty ,t he wheels could lock when
braking .T he steerability and braking charac-
teristic sm ay be severely impaired .A ddition-
ally ,f urther driving safety system sa re deac-
tivated .T here is an increased danger of skid-
ding and accidents.
Driv eonc arefully. Hav eA BS checked imme-
diately at aq uali fied specialist workshop.
Whe nA BS is malfunctioning ,o the rs ys tems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 220 )a nd dis-
play messages which ma ybes hown in the
instrument cluster ( Y
page 192).
Braking X
If ABS intervenes: continue to depress the
brake peda lv igorously unti lt he braking sit-
uatio ni so ver. X
To make af ul lb rake application: depress
the brake peda lw it hf ul lf orce.
If ABS intervene sw he nb raking ,y ou will fee la
pulsing in the brake pedal.
The pulsating brake peda lc an be an indication
of hazardou sr oa dc onditions, and functions as a
reminder to take extra car ew hile driving.
BAS (Brak eA ssis tS ystem)
General information
BAS operates in emergency braking situations.
If yo ud ep ress the brake peda lq ui ckly, BAS
automaticall yb oo sts the braking force ,t hus
shortening the stopping distance.Driving safety systems 61
Safety Z

sensor technology to assess the traffic situa-
tion.
Situation-dependent braking assistance is capa-
ble of reacting to moving objects that have
alread yb een detected as such at least once
over the period of observation, up to vehicle
speeds of around 155 mph (250 km/h).
Situation-dependent braking assistance can
also detect stationary objects, up to vehicle
speeds of around 44 mph (70 km/h). X
Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally agai ni f:R
you release the brake pedal. R
there is no longer any danger of ac ollision.R
no obstacle is detected in front of your vehi-
cle.
Situation-dependent braking assistance is then
deactivated.
Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems ( Y
page 61).
G WARNING
Adaptive Brake Assist does not react: R
to people or animals R
to oncoming vehicles R
to crossing traffic R
when cornering
As ar esult, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist might: R
intervene unnecessarily R
not intervene
There is ar isk of an accident. Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in an on-critical driving situation.
Due to the nature of the system, complex but
non-critical driving conditions may also cause
Active Brake Assist to intervene.
Even if Active Brake Assist is not available due to
am alfunction in the radar sensor system, the
brake system is still available with full brake
boosting effect and BAS.
ESP ®
(Electronic Stability Program)
General notes
i Observe the "Important safety notes" sec-
tion ( Y
page 61).
ESP ®
monitors driving stability and traction ,i .e.
power transmission between the tires and the
road surface.
If ESP ®
detects that the vehicle is deviating from
the direction desired by the driver, one or more
wheels are braked to stabilize the vehicle. The
engine output is also modified to keep the vehi-
cle on the desired course within physical limits.
ESP ®
assists the driver when pulling awa yo n
wet or slippery roads. ESP ®
can also stabilize
the vehicle during braking.
ETS/4ETS (Electronic Traction System)
i Observe the "Important safety notes" sec-
tion ( Y
page 61).
ETS traction control is part of ESP ®
.Onv ehicles
with 4MATIC, 4ETS is part of ESP ®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
awa ya nd accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 61).64
Driving safety systems
Safety