Page 358 of 464

358 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
Ï
Coolant
Stop, engine off
The coolant is too hot.
Stop the vehicle and turn off the engine.
Only start the engine again after the mes-
sage disappears. You could otherwise dam-
age the engine.
/
Coolant
Check level
The coolant level is too low.
Add coolant (
page 293).
If you have to add coolant frequently, have
the cooling system checked by an autho-
rized Mercedes-Benz Center.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the hood. Stay away from the engine if you
see or hear steam coming from it. Turn off
the engine, get out of the vehicle and do not
stand near the vehicle until the engine has
cooled down.
The engine should not be operated with the
coolant temperature above 248°F (120°C).
Doing so may cause serious engine damage
which is not covered by the Mercedes-Benz
Limited Warranty.Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
!Do not ignore the low engine coolant
level warning. Extended driving with
this message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat, causing major en-
gine damage.
Page 359 of 464

359 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
±
Display malfunction
Visit workshop
Certain electronic systems are un-
able to relay information to the con-
trol system. The following systems
may have failed:
Coolant temperature display
Tachometer
Cruise control display
Have the electronic systems checked by an
authorized Mercedes-Benz Center.
G
Display malfunction
Visit workshop
The instrument cluster display is
malfunctioning.
When the display is malfunctioning, warnings
and malfunction messages might not be dis-
played.
Continue driving with added caution.
Visit an authorized Mercedes-Benz Center
as soon as possible.
The displays for several systems
have malfunctioned. Some systems
themselves may also have malfunc-
tioned.
Continue driving with added caution.
Have the electronic systems checked by an
authorized Mercedes-Benz Center.
J
Doors open
You are attempting to drive with
one or more doors open.
Close all doors.
Page 422 of 464

422 Technical dataFuels, coolants, lubricants, etc.CapacitiesVehicle components and their respective
lubricants must match. Therefore, only use
products tested and approved by
Mercedes-Benz.Please refer to the Factory Approved Ser-
vice Products pamphlet, or inquire at your
authorized Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants etc.
Engine with oil filter
SLK 350
8.5 US qt (8.0 l)
Approved engine oils
SLK 55 AMG
8.5 US qt (8.0 l)
Automatic transmission*
SLK 350
10.4 US qt (9.8 l)
MB Automatic Transmission Fluid
SLK 55 AMG
10.4 US qt (9.8 l)
Manual transmission
SLK 350
1.6 US qt (1.5 l)
MB Manual Transmission Oil
Rear axle
SLK 350
1.2 US qt (1.1 l)
Hypoid gear oil SAE 85 W 90
SLK 55 AMG
1.3 US qt (1.2 l)
Power steering
SLK 350
1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin CHF 11S)
SLK 55 AMG
1.1 US qt (1.0 l)
Front wheel hubs
approx. 2.1oz (60g) each
High temperature roller bearing grease
Brake system
0.5 US qt (0.5 l)
MB Brake Fluid (DOT 4)
Cooling system
SLK 350
approx.11.2 US qt (10.2 l)
MB 325.0 Anticorrosion/Antifreeze Agent
SLK 55 AMG
approx. 11.7 US qt (11.1 l)
Page 423 of 464
423 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants etc.
Fuel tank
including a reserve of
SLK 350
SLK 55 AMG
approx. 18.5 US gal (70.0 l)
approx. 2.4 US gal (9.0 l)
approx. 18.5 US gal (70.0 l)
approx. 2.6 US gal (10.0 l)
Premium unleaded gasoline:
Minimum posted Octane 91 (average of
96 RON / 86 MON)
Air conditioning system
R-134a refrigerant and special PAG lubricant oil
(never R-12)
Hydraulic system for
retractable hardtop
0.19 US qt (0.18 l)
MB Hydraulic Fluid
Windshield washer
system and headlamp
cleaning system*
7.4 US qt (7.0 l)
MB Windshield washer concentrate
1
1Use MB Windshield Washer Concentrate“S” and water for temperatures above freezing point or MB Windshield Washer Concentrate “S” and commercially available
premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 429).
Page 429 of 464

429 Technical data
Fuels, coolants, lubricants, etc.
Windshield washer system and head-lamp cleaning system*
Both the windshield washer system and
the headlamp cleaning system* are sup-
plied from the windshield washer fluid res-
ervoir.
The washer fluid reservoir has a capacity of
approximately 7.4 US qt (7.0 l).
Refill the reservoir with MB Windshield
Washer Concentrate “S” and water (or
concentrate and commercially avail-
able premixed windshield washer sol-
vent/antifreeze, depending on ambient
temperatures).Windshield washer and headlamp
cleaning* fluid mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate “S”
and water:
1 part “S” to100 parts water
[40 ml (1.34 fl oz) “S” to 1 gallon (4 l)
water]
For temperatures below freezing point, use
MB Windshield Washer Concentrate “S”
and commercially available premixed
windshield washer solvent/antifreeze:
1part“S” to 100parts solvent
[40 ml (1.34 fl oz) “S” to 1 gallon (4 l)
solvent].
Warning!
G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts because it may ignite
and burn. You could be seriously burned.
Page 433 of 464

433 Technical terms
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts. ->SRS
FSS (Canada vehicles)
(F
lexible S
ervice S
ystem)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. FSS evaluates en-
gine temperature, oil level, vehicle
speed, engine speed, distance driven
and the time elapsed since your last
maintenance service, and calls for the
next maintenance service accordingly.
GAWR
(G
ross A
xle W
eight R
ating)
(
page 323)Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the selector lever.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers.
GVW
(G
ross V
ehicle W
eight)
(
page 323)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 324)Head-thorax air bag
Installed in the doors, these air bags
protect occupants during side impact
collisions exceeding a preset thresh-
old. Unlike normal side air bags,
head-thorax air bags are also designed
to provide protection for the head area.
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
coolant temperature and fuel gauge.
Kickdown
Depressing the accelerator past the
point of resistance shifts the automatic
transmission down to the lowest possi-
ble gear. This very quickly accelerates
the vehicle and should not be used for
normal acceleration needs.
Kilopascal (kPa)
(
page 324)
Page 441 of 464

441 Index
Bi-Xenon
Description 431
Headlamps 381
Bolts
For spare wheel 373
Brake Assist System see BAS
Brakes 274
Brake fluid 286, 424
Display message 356
Salty roads 274
SLK 55 AMG 275
Warning lamp 343
Break-in period 272
Bulbs
Front/rear lamps 380
Replacing 380
Buttons (Audio system) 194C
CAC 431
California, important notice 11
CAN system, description 432
Capacities
(Fuels, coolants, lubricants, etc.) 422
Catalytic converter 282
CD
Changer 250
Player/changer, operation 125
CD changer (Audio system) 207, 209
CD operation (Audio system) 207
Center console
Lamp 347
Overview 28
Central locking
Automatic (Control system) 141
Automatic (When driving) 97
From outside (SmartKey) 59
Locking/unlocking from inside 97
Central locking/unlocking switches 98
Certification label 410
CHECK ENGINE indicator lamp 344Child safety
Air bags 64
Children in the vehicle 73
Cigarette lighter 254
Cleaning tires 299
Climate control 172
Air conditioning 178
Air distribution 176
Air recirculation mode 176
Air volume 176
Control panel, overview 175
Defrosting 181
Maximum cooling 179
Rear window defroster 171
Switching on/off 175
Temperature 175
Clock 116
Cockpit
Description 432
Overview 22
Cold tire inflation pressure 323
Collapsible tire, description 432
Collapsible wheel chock 371
Page 442 of 464

442 IndexCOMAND 116
Description 432
Navigation 126
Radio transmitter 281
Combination switch 110
High beam flasher 110
High beam headlamps 52, 110
Low beam headlamps 52
Turn signals 52
Turn signals, additional in
mirrors 381
Windshield wipers 53
Comfort driving
Transmission program mode 158
Compatible child seat see Baby Smart
TM
Control system 117
AUDIO menu 123
Automatic locking 141
Calling up range 146
CD player/CD changer 125
Clock, hours 134
Clock, minutes 134
Convenience submenu 142
Coolant temperature 122
Date, day 136Date, month 135
Date, year 136
Daytime running lamp mode 137
Description 432
Easy-entry/exit feature 142
Fuel consumption statistics 144
Functions 118
Instrument cluster submenu 131
Interior lighting delayed shut-off 140
Key-dependency 143
Language 132
Lighting submenu 137
Locator lighting 138
Maintenance service indicator 329
Menus 118
Messages in display 348
Multifunction display 117
Multifunction steering wheel 118
NAV menu 126
Night security illumination 139
Outside temperature/speed 132
Overview (Menus) 120
Overview (Settings submenus) 130
Parking position 144Radio station 124
Resetting all settings 128
Resetting single settings 129
Satellite radio (USA only) 124
Settings menu 127
Settings submenus 129
Speed/outside temperature 123
Speedometer, display mode 131
Standard display 122
Submenus, selecting and
scrolling 129
TEL menu 146
Temperature, display mode 131
Time and date synchronization with
head unit 133
Time/date submenu 133
Trip computer menu 144
Vehicle status message memory
menu 126
Vehicle submenu 141
Controller Area Network see CAN system
Convenience closing
Power windows 235
Retractable hardtop 242