2015 MERCEDES-BENZ CLS-Class Fluid

Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 237
Display message ............................ 263
Notes/functio n.............................. 214
see Active Blind Spot Assist
Box (trunk) ......................................... 291
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 248
Notes ............................................. 390
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 256
Brakes
ABS .................................................. 70
Adaptive Brake Assist ...................... 75
BAS .................................................. 71
BAS PLUS with Cross-Traffic
Assist ............................................... 71
Brake fluid (notes) ......................... 390
Display message ............................ 246
High-performance brake system .... 176
HOLD function ............................... 191
Important safety notes .................. 175
Maintenance .................................. 176
Parking brake ................................ 172
Riding tips ...................................... 175
Warning lamp ................................. 275
Breakdown
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 33 C
California Important notice for retail cus-
tomers and lessees .......................... 24
Calling up a malfunction
see Display messages
Car
see Vehicle Car key
see SmartKey
Care
360° camera ................................. 322
Car wash ........................................ 317
Carpets .......................................... 324
Display ........................................... 322
Exhaust pipe .................................. 322
Exterior lights ................................ 321
Gear or selector lever .................... 323
Interior ........................................... 322
Matte finish ................................... 320
Note s............................................. 317
Paint .............................................. 319
Plastic trim .................................... 322
Power washer ................................ 319
Rear view camera .......................... 321
Roof lining ...................................... 324
Seat belt ........................................ 324
Seat cove r..................................... 323
Sensors ......................................... 321
Steering wheel ............................... 323
Trim pieces .................................... 323
Washing by hand ........................... 318
Wheels ........................................... 320
Windows ........................................ 320
Wiper blades .................................. 321
Wooden trim .................................. 323
Cargo tie down rings ......................... 290
CD player (on-board computer) ........ 233
Center console
Lower section .................................. 38
Lower section (AMG vehicles) .......... 39
Upper section .................................. 37
Central locking
Automatic locking (on-board com-puter) ............................................. 240
Locking/unlocking (SmartKey )........ 84
Child
Restraint system .............................. 65
Child seat
Forward-facing restraint system ...... 68
LATCH-type (ISOFIX) child seat
anchors ............................................ 66
On the front-passenger seat ............ 68
Rearward-facing restraint system .... 68
Top Tether ....................................... 67 6
Index

Storing settings (memory func-
tion) ............................................... 119
Switching seat heating on/of
f....... 111
Switching seat ventilation on/of f.. 112
Section
Trunk ............................................... 92
Securing cargo .................................. 290
Selector lever
Cleaning ......................................... 323
Sensors (cleaning instructions) ....... 321
Service menu (on-board com-
puter) .................................................. 237
Service products
Brake fluid ..................................... 390
Coolant (engine) ............................ 390
Engine oil ....................................... 389
Fuel ................................................ 387
Important safety notes .................. 387
Refrigerant (air-conditioning sys-
tem) ............................................... 392
Washer fluid ................................... 391
Setting the air distribution ............... 141
Setting the airflow ............................ 142
Settings
Factory (on-board computer) ......... 241
On-board computer ....................... 237
SETUP (on-board computer) ............. 242
Side impact air bag ............................. 52
Side marker lamp (display mes-
sage) ................................................... 257
Side windows
Cleaning ......................................... 320
Convenience closing feature ............ 98
Convenience opening feature .......... 98
Important safety information ........... 97
Opening/closing .............................. 97
Problem (malfunction) ................... 100
Resetting ......................................... 99
Sliding sunroof
Important safety notes .................. 100
Opening/closing ............................ 101
Problem (malfunction) ................... 103
Resetting ....................................... 102
SmartKey
Changing the battery ....................... 87
Changing the programming ............. 86
Checking the battery ....................... 87 Convenience closing feature ............ 99
Convenience opening feature .......... 98
Display message ............................ 272
Door central locking/unlocking ....... 84
Important safety notes .................... 84
Loss ................................................. 89
Mechanical key ................................ 86
Overview .......................................... 84
Positions (ignition lock) ................. 149
Problem (malfunction) ..................... 89
Starting the engine ........................ 152
Snow chains ...................................... 347
Sockets
Center console .............................. 298
General notes ................................ 298
Rear compartment ......................... 299
Spare wheel
Stowing .......................................... 380
Special seat belt retractor .................. 64
Specialist workshop ............................ 26
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 230
In the Instrument cluster ................. 33
Segments ...................................... 227
Selecting the unit of measure-
ment .............................................. 238
see Instrument cluster
SPORT handling mode
Activating/deactivating (AMG
vehicles) .......................................... 77
Warning lamp ................................. 278
Standing lamps
Display message ............................ 256
Switching on/of f........................... 123
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 151
Steering (display message) .............. 272
Steering Assist and Stop&Go Pilot
(DISTRONIC PLUS)
Activating/deactivating ................. 236
Display message ............................ 266
Steering wheel
Adjusting (electrically) ................... 113
Button overview ............................... 35 Index
17

Reserve fuel ..................................
.280
Restraint system ............................ 279
Seat belt ........................................ 274
SPORT handling mode ................... 278
Tire pressure monitor .................... 283
Warranty .............................................. 23
Washer fluid
Display message ............................ 272
Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 371
Wheel chock ...................................... 368
Wheels
Changing a wheel .......................... 367
Checking ........................................ 345
Cleaning ......................................... 320
Emergency spare wheel ................. 379
General notes ................................ 372
Important safety notes .................. 344
Information on driving .................... 344
Interchanging/changing ................ 367
Mounting a new wheel ................... 371
Mounting a wheel .......................... 368
Removing a wheel .......................... 370
Storing .......................................... .367
Tightening torque ........................... 371
Wheel size/tire size ....................... 372
Window curtain air bag
Operation ......................................... 53
Windows
see Side windows
Windshield
Defrosting ...................................... 142
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 315
Important safety notes .................. 391
Windshield wipers
Problem (malfunction) ................... 130
Replacing the wiper blades ............ 129
Switching on/off ........................... 128
Winter driving
Important safety notes .................. 346
Slippery road surfaces ................... 177
Snow chains .................................. 347
Winter tires
M+S tires ....................................... 346 Wiper blades
Cleaning ......................................... 321
Important safety notes .................. 129
Replacing ....................................... 129
Wooden trim (cleaning instruc-
tions) ................................................. .323
Workshop
see Qualified specialist workshop Z
ZONE function Switching on/off ........................... 142 Index
21

switch-off using the on-board computer
(Y
page 240).
Manual interior lighting control X
To switch the front interior lighting on/
off: press the cbutton.
X To switch the rear interior lighting on/
off: press the ubutton.
X To switch the reading lamps on/off:
press the pbutton. Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X Lock and then unlock the vehicle using the
SmartKey. Replacing bulbs
The front and rear light clusters of your vehi-
cle are equipped with LED light bulbs. Do not replace the bulbs yourself. Contact a qualifiedspecialist workshop which has the necessaryspecialist knowledge and tools to carry out
the work required.
Lamps are an important aspect of vehicle
safety. You must therefore make sure that
these function correctly at all times. Have the
headlamp setting checked regularly. Windshield wipers
Switching the windshield wipers
on/off
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can scratch the glass if wiping takes place when
the windshield is dry.
If it is necessary to switch on the windshield wipers in dry weather conditions, always
use washer fluid when operating the wind-
shield wipers.
! If the windshield wipers leave smears on
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Clean the windshield using washer fluid
after washing the vehicle in an automatic
car wash.
! Intermittent wiping with rain sensor: due
to optical influences and the windshield
becoming dirty in dry weather conditions,
the windshield wipers may be activated
inadvertently. This could then damage the
windshield wiper blades or scratch the
windshield.
For this reason, you should always switch
off the windshield wipers in dry weather. 1
$ Windshield wiper off
2 Ä Intermittent wipe, low (rain sensor
set to low sensitivity)
3 Å Intermittent wipe, high (rain sensor
set to high sensitivity)
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe
î To wipe with washer fluid
X Switch on the ignition.
X Turn the combination switch to the corre-
sponding position. 128
Windshield wipersLights and windshield wipers

R
In order to prevent any salt build-up, apply
the brakes occasionally while paying atten- tion to the traffic conditions.
R Carefully depress the brake pedal and the
beginning and end of a journey.
R Maintain a greater distance to the vehicle
ahead.
Servicing the brakes !
If the red brake warning lamp lights up in
the instrument cluster and you hear a warn- ing tone while the engine is running, the
brake fluid level may be too low. Observe
additional warning messages in the multi-
function display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immedi-
ately. This work should be carried out at a
qualified specialist workshop.
! Vehicles with 4MATIC:
function or per-
formance tests may only be carried out on
a 2-axle dynamometer. If you are planning
to have the vehicle tested on such a dyna-
mometer, contact an authorized Mercedes-
Benz Center to obtain further information
first. Otherwise, you could damage the
drive train or the brake system.
! Vehicles with 4MATIC:
as the ESP®
sys-
tem operates automatically, the engine and
the ignition must be switched off (Smart-
Key in position 0or 1in the ignition lock or
Start/Stop button in position 0or 1) while
the parking brake is being tested on a brake
dynamometer.
Braking maneuvers triggered automatically
by ESP ®
may seriously damage the brake
system. !
Vehicles with 4MATIC:
as the ESP®
sys-
tem operates automatically, the engine and
the ignition system must be switched off
(SmartKey in position 0or 1in the ignition
lock or Start/Stop button in position 0or 1)
when:
R testing the parking brake on a brake
dynamometer.
R you intend to have the vehicle towed with
one of the axles raised.
Braking maneuvers triggered automatically
by ESP ®
may seriously damage the brake
system.
All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist workshop. Consult a qualified
specialist workshop to arrange this.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the function-
ality of your brakes at regular intervals. To do so, press firmly on the brake pedal when driv-
ing at a high speed. This improves the grip of
the brake pads.
You can find a description of Brake Assist
(BAS) on (Y page 71) or of BAS PLUS on
(Y page 71).
The braking characteristics of the vehicle can be seriously impaired if:
R brake pads other than those recommended
are installed
R the recommended brake fluid is not used
Safe braking can no longer be guaranteed.
AMG high-performance and ceramic
brakes The high-performance brake system is only
available on AMG vehicles.176
Driving tipsDriving and parking

Display messages
Possible causes/consequences and
M
MSolutions T!
÷
Inoperative See Inoperative See
Operator's Manual Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS, the
HOLD function, PRE-SAFE ®
and hill start assist are not available
due to a malfunction.
BAS PLUS with Cross-Traffic Assist, COLLISION PREVENTION
ASSIST PLUS, PRE‑SAFE ®
PLUS and PRE ‑SAFE®
Brake may also
have failed.
In addition, the ÷,åand! warning lamps light up in the
instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance in an emergency braking situation can
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. F(USA
only)J
(Canada
only)
Please Release Please Release
Parking Brake Parking Brake You are driving with the parking brake applied. A warning tone also
sounds.
X Release the parking brake. $(USA
only)J
(Canada
only)
Check Brake Fluid Check Brake Fluid
Level Level There is not enough brake fluid in the brake fluid reservoir.
In addition, the
$(USA only) or J(Canada only) warning
lamp lights up in the instrument cluster and a warning tone
sounds.
G WARNING
The braking effect may be impaired.
There is a risk of an accident. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 170).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 248
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions ?
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 170).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). #
See See
Operator's
Operator's Man‐
Man‐
ual
ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
! Do not continue driving. The engine could otherwise overheat.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 170).
X Consult a qualified specialist workshop. Display
messages
259On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Ð
Power Power
Steering
Steering Mal‐
Mal‐
function See Oper‐
function See Oper‐
ator's Manual ator's Manual The power steering is malfunctioning.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident. X Check whether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. Phone No Service Phone No Service Your vehicle is outside the network provider's transmitter/
receiver range.
X Wait until the mobile phone operational readiness symbol
appears in the multifunction display. ¥
Check Washer Fluid Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X Add washer fluid (Y page 315).SmartKey
Display messages
Possible causes/consequences and
M MSolutions Â
Key Does Not Key Does Not
Belong to Vehicle Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X Use the correct SmartKey. Â
Take Take
Your
YourKey
Keyfrom
from
Ignition
Ignition The SmartKey is in the ignition lock.
X Remove the SmartKey. Â
Obtain a New Key Obtain a New Key The SmartKey needs to be replaced.
X Visit a qualified specialist workshop. Â
Replace Replace
Key
KeyBattery
Battery The battery of the KEYLESS-GO key is discharged.
X Change the batteries (Y page 87).272
Display
messagesOn-board computer and displays