2015 MERCEDES-BENZ CLS-Class brake 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

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

Problem
Possible causes/consequences and
M
MSolutions $
(USA only)
J (Canada only)
The red brake system
warning lamp comes on while the engine is run-
ning. A warning tone
also sounds. G
WARNING
There is not enough brake fluid in the brake fluid reservoir.
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 Do not add brake fluid. Adding more will not remedy the mal-
function.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. !
The yellow ABS warning
lamp is lit while the
engine is running. ABS (Anti-lock Braking System) is deactivated due to a malfunc-
tion. Therefore, BAS (Brake Assist System), BAS PLUS with Cross-
Traffic Assist, COLLISION PREVENTION ASSIST PLUS, ESP ®
(Elec-
tronic Stability Program), PRE‑ SAFE®
, PRE‑SAFE ®
PLUS,
PRE‑SAFE ®
Brake, the HOLD function and hill start assist, for
example, are also deactivated.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The 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 Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic trans-
mission, will not be available. 276
Warning and indicator lamps in the instrument clusterOn-board computer and displays

X
Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Always maintain a distance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the power washer nozzle around
when cleaning your vehicle.
Do not aim directly at any of the following:
R tires
R door gaps, roof gaps, joints, etc.
R electrical components
R battery
R connectors
R lights
R seals
R trim
R ventilation slots
Damaged seals or electrical components
can lead to leaks or failures. Cleaning the paintwork !
Do not affix:
R stickers
R films
R magnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit a qualified spe-
cialist workshop.
X Remove dirt immediately, where possible,
while avoiding rubbing too hard.
X Soak insect remains with insect remover
and rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse
off the treated areas afterwards.
X Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid.
X Use tar remover to remove tar stains.
X Use silicone remover to remove wax.
If water no longer forms "beads" on the paint surface, use the paint care products recom-
mended and approved by Mercedes-Benz.
This is the case approximately every three to
five months, depending on the climate con-
ditions and the care product used.
If dirt has penetrated the paint surface or if
the paint has become dull, the paint cleaner
recommended and approved by Mercedes-
Benz should be used.
Do not use these care products in the sun or
on the hood while the hood is hot.
X Use a suitable touch-up stick, e.g. MB
Touch-Up Stick, to repair slight damage to
the paintwork quickly and provisionally. Care
319Maintenance and care Z

Service products and filling capaci-
ties
Important safety notes
G
WARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels of the respective original containers. Always
store service products sealed in their original containers. Always keep service products out
of the reach of children. H
Environmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following:
R Fuels
R Lubricants (e.g. engine oil, transmission oil)
R Coolant
R Brake fluid
R Windshield washer fluid
R Climate control system refrigerant
Components and service products must be
matched. Only use products recommended
by Mercedes-Benz. Damage which is caused
by the use of products which have not been
recommended is not covered by the
Mercedes-Benz warranty or goodwill ges-
tures. They are listed in this Mercedes-Benz
Operator's Manual in the appropriate section. Information on tested and approved products can be obtained at an authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved
by Mercedes-Benz by the following inscrip-
tion on the containers:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51)
Other designations or recommendations indi- cate a level of quality or a specification in accordance with an MB Sheet Number (e.g.
MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
Other identifications, for example:
R 0 W-30
R 5 W-30
R 5 W-40 Fuel
Important safety notes G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refueling. G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
R Wash away fuel from skin immediately
using soap and water.
R If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
R If fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing.
R Immediately change out of clothing which
has come into contact with fuel. Service products and filling capacities
387Technical data Z

Engine oil viscosity
Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity, this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an SAE classification
(viscosity) suitable for the prevailing outside
temperatures. The table shows you which
SAE classifications are to be used. The low-
temperature characteristics of engine oils
can deteriorate significantly, e.g. as a result
of aging, soot and fuel deposits. It is therefore strongly recommended that you carry out reg-
ular oil changes using an approved engine oil with the appropriate SAE classification. Brake fluid
G
WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake fluid is too low, vapor pockets may form in the brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
Comply with the important safety notes for
service products when handling brake fluid
(Y page 387).
The brake fluid change intervals can be found
in the Maintenance Booklet. Only use brake fluid approved by Mercedes-
Benz according to MB Approval 331.0.
Information about approved brake fluid can
be obtained at any qualified specialist work-
shop or on the Internet at
http://bevo.mercedes-benz.com.
i Have the brake fluid regularly replaced at
a qualified specialist workshop and the
replacement confirmed in the Maintenance Booklet. Coolant
Important safety notes G
WARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you add anti-
freeze. Make sure that antifreeze is not spilled
next to the filler neck. Thoroughly clean the
antifreeze from components before starting
the engine.
! Only add coolant that has been premixed
with the desired antifreeze protection. You
could otherwise damage the engine.
Further information on coolants can be
found in the Mercedes-Benz Specifications for Service Products, MB BeVo 310.1, e.g.
on the Internet at
http://bevo.mercedes-benz.com. Or con-
tact a qualified specialist workshop.
! Always use a suitable coolant mixture,
even in countries where high temperatures prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
i Have the coolant regularly replaced at a
qualified specialist workshop and the
replacement confirmed in the Maintenance Booklet. 390
Service products and filling capacitiesTechnical data