2011 MERCEDES-BENZ SLK300 BATTERY REPLACING

Automatic locking when driving
......108
Automatic shift program ....................88
Automatic transmission ..................... 85
Automatic shift program ..................88
Gear range indicator ........................88
Gear ranges ..................................... 88
Gear selector lever ...........................
86
Kickdown ......................................... 87
Kickdown (manual shift program) .... 92
Manual shift program ....................... 90
One-touch gearshifting ....................89
Program mode indicator ..................89
Program mode selector switch
(automatic shift program) ................88
Program mode selector switch
(manual shift program) ....................90
Shifting procedure ........................... 86
Steering wheel gearshift control ...... 89
Transmission position indicator ....... 87
Transmission positions .................... 87
AUX socket ........................................ 145
Axle oils .............................................. 301B
Back button ....................................... 116
Backrest see Seats


Backup lamps
Messages in the multifunction
display ........................................... 252
Bar (air pressure unit) ....................... 217
BAS (Brake Assist System) ................. 49
Batteries, SmartKey
Checking condition ..........................57
Replacing ....................................... 266
Battery, Vehicle ................................. 282
Charging ........................................ 283
Jump starting ................................. 283
Messages in the multifunction
display ........................................... 249
Bead (tire) .......................................... 217
Beverage holders see Cup holders
Bluetooth ®
settings .......................... 120
Brake Assist System see BAS Brake fluid

Checking level ............................... 197
Messages in the multifunction
display

........................................... 244
Brake lamps
Cleaning lenses ............................. 229
Brake pads
Messages in the multifunction
display ........................................... 243
Brakes ................................................ 222
High-performance brake system .... 223
Parking brake ................................... 83
Warning lamp ................................. 257
Break-in period .................................. 190
Bulbs see Replacing bulbs C
CAC (Customer Assistance Center) ...21
California retail buyers and
lessees, important notice for .............19
Calls (phone) ..............................

110, 146
Can holders see Cup holders
Capacities and recommended
fuel/lubricants .................................. 300
Carpets, cleaning .............................. 231
CD player ............................................ 131
Central locking
Automatic ................................ 59, 108
Locking/unlocking from inside ........ 59
SmartKey ......................................... 56
Central locking/unlocking switch .....59
Certification label .............................. 292
Children in the vehicle
Air bags ........................................... 33
Indicator lamp, passenger front
air bag off ........................................ 37
Infant and child restraint systems .... 45
OCS (Occupant Classification
System) ........................................... 37
Safety notes ..................................... 45
Child safety
see Children in the vehicle
Chrome-plated exhaust tip,
cleaning .............................................. 232
Cigarette lighter ................................ 177 Index
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Unlocking/locking manually ..........
264
Valet locking .................................... 61
Key, SmartKey
Battery check lamp .......................... 57
Checking batteries ........................... 57
Factory setting
................................. 57
Global locking (SmartKey) ................ 57
Global unlocking
(SmartKey) ....................................... 57
Locking/unlocking ........................... 56
Loss of ............................................. 58
Messages in the multifunction
display ........................................... 246
Remote control ................................ 56
Replacing ......................................... 58
Replacing batteries ........................ 266
Restoring to factory setting ............. 57
Selective setting .............................. 57
Starter switch positions ................... 61
Kickdown ............................................. 87
Kickdown (manual shift program) ..... 92
Kilopascal (air pressure unit) ...........218
Knee bags ............................................ 36L
Labels
Certification ................................... 292
Emission control information

......... 293
Tire and Loading Information
placard ........................................... 205
Tire inflation pressure ....................200
Lamps, exterior
Exterior lamp switch ........................ 71
Front .............................................. 269
Messages in the multifunction
display ........................................... 252
Switching on/off .............................. 71
Lamps, indicator and warning
ABS .......................................... 26, 257
Brakes ..................................... 27, 257
Engine malfunction .................. 26, 262
ESP ®
........................................ 26, 260
Fog lamps ........................................ 73
Fuel tank reserve ..................... 26, 261
High-beam headlamps ...............26, 74
Instrument cluster ...................26, 256 Low tire pressure/TPMS
malfunction telltale ..................
26, 262
Passenger front air bag
off ...................................... 29, 37, 263
Seat belt telltale ................26, 42, 259
SRS ....................................

26, 32, 260
Turn signals ..................................... 26
Language, selecting ..........................104
License plate lamps
Messages in the multifunction
display ........................................... 253
Replacing bulbs ............................. 269
Light alloy wheels, cleaning .............230
Lighter see Cigarette lighter
Lighting ................................................ 70
Daytime running lamp mode ............72
Exterior ............................................ 71
Interior ............................................. 75
Limp-home mode ................................. 92
Load index (tires) ......................213, 218
Locator lighting ................................. 106
Locking the vehicle
Manually ........................................ 265
SmartKey ......................................... 56
Loss of
Key .................................................. 58
Service and Warranty Information
booklet .......................................... 292
Low-beam headlamps ......................... 71
Exterior lamp switch ........................ 71
Switching on .................................... 71
Lubricants .......................................... 300
Luggage cover ................................... 173
Lumbar support ................................... 64 M
Maintenance ........................................ 19
Maintenance System Service indicator display

................226
Service indicator message ............. 225
Service term exceeded ..................226
Manual headlamp mode (Low-
beam headlamps) ................................ 71
Manual shift program .........................90
Manual transmission .......................... 84
Gearshift lever ................................. 8410
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Indicator lamps ................................
26
Messages in the multifunction
display
........................................... 255U
Uniform Tire Quality Grading
Standards .................................. 210, 219
Units Selecting speedometer display
mode ............................................. 104
Unleaded gasoline, premium ........... 303
Unlocking the vehicle
Manually

........................................ 264
SmartKey ......................................... 56
Upholstery, cleaning .........................231
USB devices (media interface) .........139
Useful features .................................. 176V
Valet locking ........................................ 61
Vehicle
Battery ........................................... 282
Care ............................................... 227
Control system ................................ 93
Identification Number (VIN) ........... 292
Locking/unlocking

........................... 56
Lowering (wheel change) ...............281
Modifications and alterations,
Operating safety .............................. 20
Towing ........................................... 285
Unlocking/locking manually .......... 264
Vehicle dimensions
see Vehicle specification
Vehicle Identification Number
(VIN) ................................................... 292
Vehicle jack see Jack
Vehicle lighting .................................... 70
Vehicle loading
Load limit ....................................... 206
Terminology ................................... 217
Vehicle maximum load on the tire ... 219
Vehicle specification
SLK 300 ......................................... 294
SLK 350 ......................................... 295
SLK 55 AMG .................................. 296Vehicle status message memory ....
101
Vehicle tool kit .................................. 234
Vehicle washing see Vehicle care


Vehicle weights
see Vehicle specification W
Warning sounds Driver’s or passenger’s seat belt

.....42
Parking brake ................................ 244
Seat belt telltale ............................ 259
Warranty coverage ............................ 292
Washer and headlamp cleaning
system ................................................ 306
Washer fluid
Messages in the multifunction
display ........................................... 247
Mixing ratio .................................... 306
Refilling .......................................... 196
Washing the vehicle .......................... 227
Wear pattern (tires) ..........................212
Weights (vehicle) see Vehicle specification
Wheel
Changing ....................................... 273
Removing ....................................... 278
Spare ............................................. 273
Tightening torque ........................... 281
Wheels, sizes ..................................... 297
Wheels, Tires and .............................. 197
Windows see Power windows
Windows, cleaning ............................229
Wind screen ....................................... 173
Windshield Cleaning wiper blades .................... 229
Defogging ...................................... 169
Washer fluid ................................... 306
Wipers ............................................. 76
Windshield wipers
Replacing wiper blades .................. 271
Winter driving
Instructions .................................... 220
Snow chains .................................. 220
Tires ............................................... 219
Winter tires ................................ 219, 297 16
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If the battery check lamp does not come on
briefly during check, the SmartKey batteries
are discharged.
X
Replace the batteries ( Y page 266).
i You can obtain the required batteries at
any authorized Mercedes-Benz Center.
i If the batteries are checked within signal
range of the vehicle, pressing button
& or % will lock or unlock the vehicle
accordingly. Loss of the SmartKey
If you lose your SmartKey or mechanical key,
you should do the following:
X Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
X Report the loss of the SmartKey or the
mechanical key to your car insurance
company immediately.
X Have the mechanical lock replaced if
necessary.
Any authorized Mercedes-Benz Center will be
glad to supply you with a replacement. For
information on replacing the SmartKey, see
“Replacing the SmartKey” ( Y page 58).Replacing the SmartKey
Only you, or someone authorized by you can
order a replacement key from any Mercedes-
Benz Center. In order to do so, the Mercedes-
Benz Center will require proof of identity and
vehicle ownership with original documents,
including the following:
If you are the current owner of the vehicle:
R the vehicle’s current state registration
R a current identity card, passport, or drivers
license If you are an authorized person:
R
the vehicle’s current state registration
R a current identity card, passport, or drivers
license for the authorized individual
R signed and dated authorization from the
owner of the vehicle for which the key is
being requested
i Duplicated or photocopied
documentation will not be accepted.
Activating the key Once you, or an authorized person, has
provided the appropriate documents, the
Mercedes-Benz Center will need to
synchronize the key to your vehicle before it
can be used. In order to do so, the Mercedes-
Benz Center need access to your vehicle.
Opening the doors from the inside
You can open a locked door from the inside.
Open door only when conditions are safe to
do so. Example illustration driver’s door
If the vehicle has previously been locked with
the SmartKey, opening a door from the inside
will trigger the anti-theft alarm system.
To cancel the alarm, see (
Y page 53).
X Pull on inside door handle ; on the
respective door.
If the door was locked, locking knob : will
move up. 58
Locking and unlockingControls in detail
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Vehicle equipment ............................
234
Where will I find ...? .......................... 234
Vehicle status messages in the
multifunction display ....................... 236
What to do if … .................................. 256
Unlocking/locking manually ...........264
Opening/closing manually ..............266
Replacing SmartKey batteries ......... 266
Replacing bulbs ................................. 267
Replacing wiper blades ....................271
Flat tire .............................................. 273
Battery ............................................... 282
Jump starting .................................... 283
Towing the vehicle ............................285
Fuses .................................................. 288 233Practical hints
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G
Warning!
Batteries contain poisonous and corrosive
substances. Therefore, keep the batteries out
of reach of children.
If a battery is swallowed, seek medical help
immediately. G
Warning!
SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Check with
your local government’s disposal guidelines.
California residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Batteries contain materials that can harm the
environment if disposed of improperly.
Recycling of batteries is the preferred method
of disposal. Many states (USA only) or
provinces (Canada only) require sellers of
batteries to accept old batteries for recycling.
When inserting the batteries, make sure they
are clean and free of lint.
When replacing batteries, always replace
both batteries.
i The required replacement batteries are
available at any authorized Mercedes-Benz
Center.
Replacement batteries: Lithium, type
CR 2025 or equivalent.
X Remove the mechanical key from the
SmartKey (Y page 264). X
Press mechanical key ; into the SmartKey
opening until battery compartment
cover : opens. Do not keep the cover
shut. X
Remove the battery compartment cover.
X Pat the SmartKey against the palm of your
hand until battery = falls out.
X Insert the new battery with the positive
terminal (+) facing up. Use a lint-free cloth.
X Insert the tabs of the battery compartment
cover into the housing and press the cover
closed.
X Check the operation of the SmartKey. Replacing bulbs
Safety notes
Safe vehicle operation depends on proper
exterior lighting and signaling to a large
degree.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. Contact an
authorized Mercedes-Benz Center for
headlamp adjustment. G
Warning!
Bulbs and bulb sockets can be very hot. Allow
the lamp to cool down before changing a bulb.
Keep bulbs out of reach of children. Replacing bulbs
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loose if they are not tightened to a torque of
80 lb-ft (110 Nm).
X Fully collapse the jack, with handle folded
in (storage position), see ( Y page 235).
X Store the jack and the other vehicle tools
in the designated storage space.
X If so equipped, wrap the damaged wheel in
the protective wrap provided with the
vehicle tool kit and put the wheel in the
trunk.
The retractable hardtop must be closed.
For information on storing the spare wheel
after it has been replaced by a regular road
wheel, see ( Y page 235). Battery
Safety notes
A battery should always be sufficiently
charged in order to achieve its rated service
life. Refer to Maintenance Booklet for battery
maintenance intervals.
If you use your vehicle mostly for short-
distance trips, you will need to have the
battery charge checked more frequently.
When replacing a battery, always use a
battery approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, contact an
authorized Mercedes-Benz Center about
steps you need to observe. G
Warning!
Observe all safety instructions and
precautions when handling automotive
batteries.Risk of explosion.
Fire, open flames and
smoking are prohibited
when handling batteries.
Avoid creating sparks.
Battery acid is caustic. Do
not allow it to come into
contact with skin, eyes or
clothing.
Wear suitable protective
clothing, especially gloves,
apron and faceguard.
Wear eye protection.
Rinse any acid spills
immediately with clear
water. Contact a physician
if necessary.
Keep children away.
Follow the instructions in
this Operator’s Manual.
A battery contains materials that can harm
the environment if disposed of improperly. A
large 12 V storage battery contains lead.
Recycling of the battery is the preferred
method of disposal. Many states (USA only)
or provinces (Canada only) require sellers of
batteries to accept the old battery for
recycling.
G Warning!
Failure to follow these instructions can result
in severe injury or death.
Never lean over batteries while connecting.
You might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.
282 Battery
Practical hints
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