Contents
Practical hints................................. 341
What to do if … .................................. 342
Lamps in instrument cluster ........ 342
Lamp in center console ................ 347
Vehicle status messages in the
multifunction display .................... 348
Where will I find...? ............................ 369
First aid kit ................................... 369
Vehicle tool kit, vehicle jack......... 369
Spare wheel with collapsible tire.. 371
Spare wheel bolts ........................ 373
Unlocking/locking in an emergency .. 374
Unlocking the vehicle ................... 374
Locking the vehicle ...................... 375
Manually unlocking the gear
selector lever
(automatic transmission*) ........... 376
Opening/closing in an emergency..... 377
Raising retractable hardtop
manually ...................................... 377
Replacing SmartKey batteries ........... 378
SmartKey ..................................... 379Replacing bulbs .................................. 380
Bulbs ............................................. 380
Replacing bulbs for front lamps .... 382
Replacing bulbs for rear lamps ..... 384
Replacing wiper blades....................... 386
Removing wiper blades ................. 386
Installing wiper blades .................. 387
Flat tire ............................................... 388
Preparing the vehicle .................... 388
Mounting the spare wheel ............ 388
Battery................................................ 396
Disconnecting the battery............. 397
Removing the battery.................... 397
Charging and reinstalling battery .. 397
Reconnecting the battery.............. 398
Jump starting ...................................... 399
Towing the vehicle .............................. 401
Installing towing eye bolt .............. 403
Fuses .................................................. 404
Aids for changing fuses................. 404
Main fuse box in passenger
compartment ................................ 405
Fuse box in engine compartment.. 406
Technical data.................................. 407
Parts service ...................................... 408
Warranty coverage ............................. 409
Loss of Service and Warranty
Information Booklet ...................... 409
Identification labels ............................ 410
Layout of poly-V-belt drive.................. 411
SLK 350 ........................................ 411
SLK 55 AMG ................................. 411
Engine ................................................ 412
Rims and tires .................................... 413
Same size tires ............................. 414
Mixed size tires ............................. 416
Spare wheel with collapsible tire .. 418
Electrical system ................................ 419
Main Dimensions................................ 420
Weights .............................................. 421
87 Safety and Security
Anti-theft systems
Arming tow-away alarm
Lock your vehicle with the SmartKey.
The tow-away alarm is automatically
armed after about 30 seconds.
Disarming tow-away alarm
To prevent triggering the tow-away alarm,
switch off the tow-away alarm feature be-
fore towing the vehicle, or when parking on
a surface subject to movement, such as a
ferry or auto train.The switch is located on the lower part of
the center console.
1Indicator lamp
2Tow-away alarm deactivation switch
Switch off the ignition (
page 35).
Remove the SmartKey from the starter
switch.
Press tow-away alarm deactivation
switch2.
Indicator lamp1 in the tow-away
alarm deactivation switch comes on
briefly.
Exit your vehicle.
Lock your vehicle with the SmartKey.
The tow-away alarm remains disarmed un-
til you lock your vehicle again.
Canceling tow-away alarm
To cancel the alarm:
Press theŒ or‹button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
iWhen you unlock your vehicle, the
tow-away protection disarms
automatically. The tow-away alarm
remains disarmed until you lock the
vehicle again.
iYou cannot disarm the tow-away alarm
while the ignition is switched on.
250 Controls in detailUseful featuresStorage compartments Glove box
1Glove box lid release
2Glove box
Pull glove box lid release1 to open
the glove box.
The glove box lid opens downward.
Push glove box lid1 up until it engag-
es to close the glove box.Storage compartment and telephone*
compartment under armrest
1Armrest
2Recess for opening telephone*
compartment
Storage compartment
Lift armrest1 in direction of arrow to
open the storage compartment.
Lower armrest1 until it engages to
close storage compartment.
Warning!
G
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when stowing objects in the vehicle. Put lug-
gage or cargo in the trunk if possible. Do not
place anything on shelf behind the roll bars.
Parcel nets cannot secure hard or heavy ob-
jects.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
around and injuring vehicle occupants dur-
ing an accident.iThe glove box and the storage compart-
ment under the armrest are centrally
locked and unlocked.
iThe CD changer* is located in the glove
box.
260 Controls in detailUseful features
Press SOS button2 briefly.
The indicator lamp in the
SOS button2 flashes until the emer-
gency call is concluded.
Wait for a voice connection to the
Response Center.
Close cover1 after the emergency
call is concluded.Roadside Assistance button•
Located below the center armrest cover is
the Roadside Assistance button•.
Press and hold the button (for longer
than two seconds).
A call to a Mercedes-Benz Roadside
Assistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message
Connecting
call
will appear in the multifunction
display and the audio system is muted.
When the connection is established, the
message Call connected
appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and lo-
cation (subject to availability of cellular
and GPS signals).A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established.
Describe the nature of the need for as-
sistance.
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest
Mercedes-Benz Center. For services such
as labor and/or towing, charges may ap-
ply. Refer to the Roadside Assistance man-
ual for more information.
The following is only available in the USA:
Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire with the
vehicle spare tire are obtainable.
Warning!
G
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle, ve-
hicle in a dangerous road location), please
do not wait for voice contact after you have
pressed the emergency button. Carefully
leave the vehicle and move to a safe loca-
tion. The Response Center will automatically
contact local emergency officials with the
vehicle’s approximate location if they re-
ceive an automatic SOS signal and cannot
make voice contact with the vehicle occu-
pants.
303 Operation
Tires and wheels
Steps for determining correct load limit
The following steps have been developed
as required of all manufacturers under Title
49, Code of U.S. Federal Regulations, Part
575 pursuant to the “National Traffic and
Motor Vehicle Safety Act of 1966”.
Step 1 (Vehicles equipped with placard
Example A)
Locate the statement “The combined
weight of occupants and cargo should
never exceed XXX kg or XXX lbs.” on
your vehicle’s placard.
Step 1 (Vehicles equipped with placard
Example B)
Locate the heading “Vehicle Capacity
Weight” on your vehicle’s placard.
Step 2
Determine the combined weight of the
driver and passengers that will be
riding in your vehicle.Step 3
Subtract the combined weight of the
driver and passengers from XXX kilo-
grams or XXX lbs.
Step 4
The resulting figure equals the avail-
able amount of cargo and luggage load
capacity. For example, if the “XXX”
amount equals 1400 lbs. and there will
be five 150 lbs. passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs.
(1400-750 (5 x150) = 650 lbs.)
Step 5
Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may not safely
exceed the available cargo and luggage
load capacity calculated in step 4.Step 6 (if applicable)
If your vehicle will be towing a trailer,
load from your trailer will be trans-
ferred to your vehicle. Consult this
manual to determine how this reduces
the available cargo and luggage load
capacity of your vehicle (
page 305).
The following table shows examples on
how to calculate total and cargo load
capacities with varying seating configura-
tions and number and size of occupants.
The following examples use a load limit
of 1500 lbs. This is for illustration
purposes only. Make sure you are using
the actual load limit for your vehicle stated
on the vehicle’s placard (
page 301).
305 Operation
Tires and wheels
Certification label
Even after careful determination of the
combined weight of all occupants, cargo
and the trailer tongue load (if applicable)
(page 305) as to not exceed the permis-
sible load limit, you must make sure that
your vehicle never exceeds the Gross Vehi-
cle Weight Rating (GVWR) and the Gross
Axle Weight Rating (GAWR) for either the
front or rear axle. You can obtain the
GVWR and GAWR from the Certification la-
bel. The Certification Label can be found
on the driver’s door B-pillar (
page 301).Gross Vehicle Weight Rating (GVWR): The
total weight of the vehicle, all occupants,
all cargo, and the trailer tongue load
(
page 305) must never exceed the
GVWR.
Gross Axle Weight Rating (GAWR): The to-
tal allowable weight that can be carried by
a single axle (front or rear).
To assure that your vehicle does not ex-
ceed the maximum permissible weight
limits (GVWR and GAWR for front and rear
axle), have the loaded vehicle (including
driver, passengers and all cargo and, if ap-
plicable, trailer fully loaded) weighed on a
suitable commercial scale.Trailer tongue load
The tongue load of any trailer is an impor-
tant weight to measure because it affects
the load you can carry in your vehicle. If a
trailer is towed, the tongue load must be
added to the weight of all occupants riding
and any cargo you are carrying in the
vehicle. The tongue load typically is ten
percent of the trailer weight and every-
thing loaded in it.
Your Mercedes-Benz has been designed
primarily to carry passengers and their
cargo. Mercedes-Benz does not recom-
mend trailer towing with your vehicle.
341 Practical hints
What to do if …
Where will I find...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses
369 Practical hints
Where will I find...?
Where will I find...?
First aid kit
The first aid kit is stored in a parcel net
behind the driver’s seat.Vehicle tool kit, vehicle jack
The vehicle tool kit is stored in a storage
compartment under the trunk floor.
The following is included:
Collapsible chock
Vehicle jack
Protective wrap
Alignment bolt
Towing eye bolt
Wheel wrench
Spare fuses
Fuse extractor
Valve extractor
Electric air pumpRemoving the vehicle tool kit
1Spare wheel
2Vehicle tool kit (under collapsible tire,
together with wheel bolts for spare
wheel with collapsible tire)
3Retaining screw
Lift up trunk floor.
Loosen retaining screw3 by turning it
counter-clockwise.
Remove spare wheel1.
Remove vehicle tool kit2.1Collapsible chock
2Vehicle jack
3Protective wrap
4Alignment bolt
5Towing eye bolt
6Wheel wrench
7Spare fuses, fuse extractor and valve
extractor
8Electric air pump