Page 368 of 464
368 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
<
Seat belt system
Visit workshop
The seat belt system is malfunction-
ing.
Visit an authorized Mercedes-Benz Center
as soon as possible.
t
Function
Not available
This display appears if buttons
ort on the multifunction steer-
ing wheel is pressed and the vehicle
is not equipped with a telephone*.
Ê
Close trunk lid
This message will appear whenever
the trunk lid is open.
Close the trunk lid.
W
Washer fluid
Top up
The fluid level in the windshield
washer fluid reservoir has dropped
below its minimum mark.
Add washer fluid (
page 295).
Page 396 of 464

396 Practical hintsBatteryThe battery is located in the engine com-
partment on the right-hand side below the
windshield washer fluid reservoir.
1Battery
2Positive terminal
3Negative terminal
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries,
see “Battery” (
page 294).
Never lean over batteries while connecting
them, as you could otherwise be injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come into contact with
eyes, skin or clothing. In case it does, imme-
diately 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.
Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an acci-
dent.!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.
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 455 of 464

455 Index
Steering column see Steering wheel
Steering wheel
Electrical adjustment 41
Heating 270
Manual adjustment 41
Steering wheel gearshift control 160
SLK 350 161
SLK 55 AMG 162
Stolen vehicle, Recovery services 264
Storage compartments 250
Storing tires 299
Summer opening
Power windows 235
Retractable hardtop 242
Sun vizors 170
Supplemental Restraint System see SRS
Symbols in display 355T
Tachometer 115
Tail lamps 381
Tar stains see Vehicle care
TDMA or CDMA network phones
(Telephone) 223
Technical data
Air conditioning refrigerant 424
Brake fluid 424
Coolants 426
Electrical system 419
Engine 412
Engine oil 424
Fuel additives 425
Fuel requirements 425
Fuels, coolants, lubricants, etc. 422
Headlamp cleaning system 429
Main dimensions 420
Parts service 408
Premium unleaded gasoline 425
Rims and tires 413
Weights 421
Windshield washer system 429
Tele Aid system 257
Description 436
Emergency calls 258GPS 257
Information button 261
Initiating an emergency call 259
Remote door unlock 263
Requirements 257
Roadside Assistance 260
Roadside Information, terminating
a call 262
Stolen Vehicle Recovery
services 264
System self-check 258
Upgrade scenario 262
Telephone 256
Compartment 250
GSM network phones 216
Operation (Audio system) 191
Operation (Control system) 146
Temperature
Tires 307
Tightening torque
Description 436
Wheel bolts 395
Time and date synchronization with
head unit (Control system) 133
TIN 325
Page 458 of 464
458 IndexW
Warning sounds
Anti-theft alarm system 85
Driver’s seat belt 69
Exterior lighting 58, 107
Maintenance service indicator 330
Panic alarm 78
Parking brake 50, 343
Tow-away alarm 86
Warranty coverage 409
Washing the vehicle see Vehicle care
Wear pattern (Tires) 326
Weights 421
Wheel bolts 373
Wheel chock (Vehicle tool kit) 369
Wheel wrench (Vehicle tool kit) 369
Wheels see Tires
Wheels, tightening torque 395
Where will I find...? 369
Wind screen 243
Description 437
Windows see Power windows
Windshield
Washer fluid reservoir 295
Washer system 429Windshield wipers 53
Intermittent wiping 54
Intermittent/interval wiping 53
Replacing wiper blades 386
Single wipe 54
Wiper blades, cleaning 337
Wiping with windshield washer
fluid 54
Winter driving 327
Instructions 279
Snow chains 328
Tires 327
Winter tires see Tires
Wiper blades, replacing 386
Wiping and washing see Windshield
wipers
Wood trims, cleaning 340