Emissions control
Service and warranty information ....20
Engine
Check Engine warning lamp ........... 250
Display message ............................ 226
ECO start/stop function ................139
Engine number ............................... 348
Irregularr unning............................ 143
Jump-starting ................................. 299
Starting problems ..........................143
Starting the engine with the
SmartKey ....................................... 137
Starting with KEYLESS-GO .............138
Switching off .................................. 156
Tow-starting (vehicle) ..................... 303
Engine electronics
Problem (malfunction) ...................143
Engine jump starting
see Jump starting (engine)
Engine oil
Adding ........................................... 278
Additives ........................................ 351
Checking the oil level ..................... 277
Checking the oil level using the
dipstick .......................................... 278
Display message ............................ 227
Filling capacity ............................... 350
Notes about oil grades ................... 350
Notes on oil level/consumption ....277
Temperature (on-board computer) .207
Viscosity ........................................ 351
ESP ®
(Electronic Stability
Program) AMG menu (on-board computer) ...208
Deactivating/activating (AMG
vehicles) .......................................... 63
Deactivating/activating (notes;
except AMG vehicles) ......................62
Display message ............................ 212
ETS .................................................. 62
Function/notes ................................ 61
Important safety information ...........61
Warning lamp ................................. 246
ETS (Electronic Traction System) ....... 62
Exhaus tcheck ................................... 159
Exhaus ttail pipe (cleaning
instructions) ...................................... 285Exterior lighting
Setting options .............................. 106
see Lights
Exterior mirrors
Adjusting ....................................... 100
Dipping (automatic) .......................101
Folding in/ou t(automatically) .......101
Folding in/ou t(electrically) ...........101
Folding in whe nlocking (on-board
computer) ...................................... 207
Out of position (troubleshooting) ...101
Storing settings (memory function) 103
Storing the parking position ..........102
Eyeglasses compartment .................257 F
Fille rcap
see Fuel filler flap
Filling capacities (Technical data) ...348
Fire extinguisher ............................... 291
First-aid kit ......................................... 290
Flat tire MOExtended tires ..........................292
Preparing the vehicle .....................291
TIREFIT kit ...................................... 293
see Emergency spare wheel
Floormats ........................................... 273
Fog lamps Switching on/off ........................... 108
Front fog lamps
Display message ............................ 224
Switching on/off ........................... 108
Fuel
Additives ........................................ 350
Consumption statistics ..................196
Displaying the current
consumption .................................. 196
Displaying the range ......................196
Driving tips .................................... 159
Fuel gauge ....................................... 29
Grade (gasoline) ............................ 349
Important safety notes ..................348
Problem (malfunction) ...................155
Refueling ........................................ 152
Tank content/reserve fuel .............349
Fuel filler flap
Opening/closing ............................ 153 Index
9
Glove box ....................................... 256
Important safety informatio n......... 256
Rea rwall........................................ 257
Stowage net ................................... 258
Stowage net ....................................... 258
Summer tires ..................................... 310
Sun visor ............................................ 260
Supplement Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 205
Suspension tuning SETUP (on-board computer) ..........208
Switching air-recirculation mode
on/off ................................................. 129
Switching off the alarm (ATA) ............67 T
Tachometer ........................................ 193
Tail lamps Display message ............................ 223
Tank content
Fuel gauge ....................................... 29
Technical data
Capacities ...................................... 348
Emergency spare wheel .................343
Notes ............................................. 346
Tires/wheels ................................. 335
Vehicle data ................................... 353
TELEAID
Call priority .................................... 269
Downloading destinations
(COMAND) ..................................... 269
Downloading route s....................... 272
Emergency call .............................. 266
Geo fencing ................................... 273
Important safety notes ..................265
Locating astolen vehicl e............... 271
MB info call button ........................268
Remote vehicle locking ..................271
Roadside Assistance button ..........267
Search &Send ............................... 270
Self-test ......................................... 266
Speed alert .................................... 273
System .......................................... 265
Triggering the vehicle alarm ........... 273 Vehicle remote malfunction
diagnosi
s....................................... 271
Vehicle remote unlocking ..............270
Telephone
Accepting acall............................. 200
Display message ............................ 239
Menu (on-board computer) ............200
Number from the phone book ....... .201
Redialing ........................................ 201
Rejecting/ending acall................. 200
Temperature
Coolant .......................................... 193
Coolant (on-board computer) ......... 207
Engine oil (on-board computer) ...... 207
Outside temperature ..................... .193
Setting (climate control) ................126
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........67
Immobilize r...................................... 66
Time
see separate operating instructions
Timing (RACETIMER) .........................208
TIREFIT kit .......................................... 293
Tire pressure Calling up (on-board computer) .....316
Checking manually ........................315
Display message ............................ 234
Maximum ....................................... 314
Notes ............................................. 313
Not reached (TIREFIT) ....................294
Reached (TIREFIT) ..........................295
Recommended ............................... 311
Tire pressure loss warning
system
Important safety notes ..................315
Restarting ...................................... 315
Tire pressure monitoring system
Function/notes ............................. 316
Restarting ...................................... 318
Warning lamp ................................. 253
Tires
Aspect ratio (definition) .................329
Average weight of the vehicle
occupants (definition) ....................327
Bar (definition) ............................... 327
Changing awheel .......................... 329
Characteristics .............................. 327
Checking ........................................ 309 16
Index
Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can restric tthe
pedal travel or obstruct adepressed pedal.
The operating and road safety of the vehicle
is jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficien tclearance for the pedals. Do not use
loose floormats. G
WARNING
Unsuitable footwear can hinde rcorrect usage
of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect .You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident .Release
the parking brake fully before driving off. !
Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train.
! AMG vehicles: at low engine oil
temperatures below 68 ‡(+20 †), the
maximu mengine speed is restricted in
order to protect the engine .To protec tthe
engine and maintain smooth engine
operation, avoid driving at full throttle when
the engine is cold. SmartKey positions
SmartKey 0010
To remove the SmartKey
Vehicles with automatic transmission:
shift the transmission to position P
0006 Power supply for some consumers, such
as the windshield wipers
0007 Ignition (power supply for all consumers)
and drive position
0008 To start the engine
i The SmartKey can be turned in the
ignition lock even if it is not the correct
SmartKey for the vehicle. The ignition is not
switched on. The engine cannot be started. Driving
135Driving and parking Z
X
Press the 0004or0003 button to select the
Easy Entry/Exit: function.
You will see the selected setting on or
off .
X Press the 000Bbutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Y page 99).
Switching the belt adjustment on/off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Belt Adjustment function.
You will see the selected setting: Enabledor
Disabled .
X Press the 000Bbutton to save the setting.
For further information on belt adjustment,
see (Y page 54).
Switching the fold-in mirrors when
locking feature on/off
This function is only available on vehicles with
Memory Function (Y page 103).
If you switch on the Fold Mirrors in when
Locking: function, the exterior mirrors fold
in when you lock the vehicle. If you unlock the
vehicle and then open a door, the exterior
mirrors fold out again.
If you have switched on the Fold Mirrorsin when Locking: function and you fold the
exterior mirrors in using the button on the
door (Y page 101), they will not fold out
automatically. The exterior mirrors can then
only be folded out using the button on the
door.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.
X Press 000Bto confirm. X
Press the 0004or0003 button to select the
Fold Mirrors in when Locking: function.
You will see the selected setting:
Enabled or
Disabled .
X Press the 000Bbutton to save the setting.
If you have switched the function on and you
fold the exterior mirrors in using the button
on the door (Y page 101), they will not fold
out automatically. The exterior mirrors can
then only be folded out using the button on
the door. AMG menu in AMG vehicles
AMG displays 0003
Digital speedometer
0004 Gear indicator
0024 Upshift indicator
0023 Engine oil temperature
0021 Coolant temperature
0022 Status indicator for ECO start/stop
function (Y page 139)
X Press 0002or0005 on the steering wheel
to select the AMG menu.
Upshift indicator UP 0024
indicates that the
engine has reached the overrevving range
when in the manual gearshift program.
Upshift indicator UP 0024
fades out other
messages until you have shifted up.
If the engine oil temperature is below 176 ‡
(80 †) the oil temperature is shown in blue. Menus and submenus
207On-board computer and displays Z
Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 23).Engine compartment
Hood
Opening the hood G
WARNING
Do not pull the release lever while the vehicle
is in motion. Otherwise, the hood could be
forced open by passing air flow.
This could cause the hood to come loose and
injure you and/o rothers. G
WARNING
Do not open the hood when the engine is
overheated. You could be seriously injured.
Observe the coolant temperature gauge to
determine whether the engine may be
overheated. If you see flames or smoke
coming from the engine compartment, move
away fro mthe vehicle. Wait until the engine
has cooled. If necessary, call the fire
department. G
WARNING
There is a risk of injury if the hood is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Operator's
Manual and observe the relevant safety notes. G
WARNING
To avoid injury, stay clear of moving parts
when the hood is open and the engine is
running.
The radiator fan may continue to run for
approximately 30seconds or may even restart
after the engine has been switched off. For
this reason, you must not reach into the fan
rotation area. G
WARNING
The engine is equipped with a transistorized
ignition system. Because of the high voltage,
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnostic
socket) of the ignition system:
R with the engine running
R while starting the engine
R when the ignition is switched on and the
engine is turned manually G
WARNING
The windshield wipers and wiper linkage
could be set in motion.
When the hood is open, you or others could
be injured by the wiper linkage.
Make sure that the windshield wipers are
switched off. Remove the SmartKey or make
sure that no ignition position has been
selected with KEYLESS-GO. All indicator
lamps must be off in the instrument panel.
! Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood. 276
Engine compartmentMaintenance and care
X
Make sure that the windshield wipers are
turned off.
X Pull release lever 0003on the hood.
The hood is released. X
Reach into the gap, pull hood catch
handle 0004up and lift the hood.
If you lift the hood approximately 15 inches
(40 cm), the hood is opened and held open
automatically by the gas-filled struts.
Closing the hood G
WARNING
When closing the hood, use extreme caution
not to catch hands or fingers. Be careful that
you do not close the hood on anyone.
Make sure the hood is securely engaged
before driving off. Do not continue driving if
the hood can no longer engage after an
accident, for example. The hood could
otherwise come loose while the vehicle is in
motion and injure you and/or others. X
Lower the hood and let it fall from a height
of approximately 8inche s(20cm).
X Check that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Open it again and close
it with a little more force. Engine oil
Notes on the oil level Depending on the driving style, the vehicle
consumes up to 0.9 US qt
(0.8l) of oil over a
distance of 600 miles (1000km). The oil
consumption may be highe rthan this when
the vehicle is new or if you frequently drive at
high engine speeds.
AMG vehicles: before operation on race
tracks, check the oil level and (Y page 278)
add oil if necessary (Y page 278). Race track
operation is only permitted with a maximum
engine oil level.
Depending on the engine, the oil dipstick may
be in a different location.
When checking the oil level:
R park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
R if the engine is not at normal operating
temperature, e.g. if the engine was only
started briefly: wait about 30 minutes
before carrying out the measurement. Engine compartment
277Maintenance and care Z
Model Capacity
SLK 250
5.8 US qt (5.5 l)
SLK 350
6.9 US qt (6.5 l)
SLK 55 AMG
With external oil
cooler:
10.0 US qt(9.5 l) Additives
!
Do not use any additives in the engine oil.
This could damage the engine.
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 (viscosity)
classification 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 regular oil changes using an
approved engine oil with the appropriate SAE
classification. Brake fluid
G
WARNING
Over a period of time, the brake fluid absorbs
moisture from the air; this lowers its boiling
point.
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 (e.g. when
driving downhill). This would impair braking
efficiency.
You should have the brake fluid renewed at
regular intervals. 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
workshop or on the Internet at
http://bevo.mercedes-benz.com.
i Have the brake fluid renewed regularly at
a qualified specialist workshop. Coolant
Important safety notes G
WARNING
Antifreeze is highly flammable.F ire, open
flames and smoking are prohibited when
handling antifreeze.
If antifreeze comes into contact with hot
engine parts, it may ignite and you could burn
yourself .Do not spill any antifreeze on hot
engine parts.
! Only add coolant that has been premixed
with the desired antifreez eprotection. You
could otherwise damage the engine.
Further information on coolants can be
found in the Mercedes-Benz Specifications
for Service Products, MB Specifications for
Service Products 310.1, e.g. on the
Internet at Service products and filling capacities
351Technical data Z
http://bevo.mercedes-benz.com. Or
contact 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.
The coolant is a mixture of water and
antifreeze/corrosion inhibitor. It performs
the following tasks:
R corrosion protection
R antifreeze protection
R raising the boiling point
If the coolant has antifreeze protection down
to -35 ‡ (-37 †), the boiling point of the
coolant during operation is approximately
266 ‡ (130 †).
The antifreeze/corrosion inhibitor
concentration in the engine cooling system
should:
R be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
R not exceed 55% (antifreeze protection
down to -49 ‡ [-45 †]). Otherwise, heat
will not be dissipated as effectively.
If the vehicle has lost coolant, add equal
amounts of water and antifreeze/corrosion
inhibitor. Mercedes-Ben zrecommends an
antifreeze/corrosion inhibitor concentrate in
accordance with MB Specifications for
Service Products 310.1.
The coolant is checked with every
maintenance interval at a qualified specialist
workshop.
i When the vehicle is first delivered, it is
filled with a coolant mixture that ensures
adequate antifreeze and corrosion
protection. Filling capacities Missing values were not available at time of
going to print.
Model Capacity
SLK 250
Approx. 10.1 US qt
(9.6 l) SLK 350
Approx. 11.0 US qt
(10.4 l) SLK 55 AMG
i
Use antifreeze/corrosion inhibitor
according to MB approval 325.0 or 326.0. Windshield/headlamp cleaning
system
Important safety notes G
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engin eparts, because it may
ignite and burn .You could be seriously
burned.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps.
! Do not add distilled or de-ionized water to
the washer fluid container. Otherwise, the
level sensor may be damaged.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked. 352
Service products and filling capacitiesTechnical data