Page 353 of 481

352 OperationMaintenance
Resetting the maintenance service indicator
In the event that the maintenance service
on your vehicle is not carried out by an au-
thorized Mercedes-Benz Center, you can
have the maintenance service indicator re-
set. The automotive maintenance facility
carrying out the maintenance service will
find the information for resetting the main-
tenance service indicator in the mainte-
nance-relevant information for your
vehicle. Such information is available from
either your authorized Mercedes-Benz
Center or directly from Mercedes-Benz.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the maintenance
service indicator. To arrive at the true
maintenance service deadline, you will
need to subtract these days from the
days shown in the maintenance service
indicator.
Do not confuse the maintenance ser-
vice indicator with the engine oil level
indicatorN.
iIf the maintenance service indicator
was inadvertently reset, have an autho-
rized Mercedes-Benz Center correct it.
Only reset if the proper maintenance
service has been performed. Resetting
the system without performing the
proper maintenance service as called
for by the maintenance service indica-
tor will result in engine damage and/or
other vehicle damage not covered by
the Mercedes-Benz Limited Warranty.
Page 380 of 481

379 Practical hints
What to do if …
When the message
Add 1 qt.
(Canada:
1 liter
) engine oil when next
refueling (SLK 55 AMG) or
Check oil
level when next refueling (SLK 280,
SLK 350) appears while the engine is run-
ning and at operating temperature, the en-
gine oil level has dropped to approximately
the minimum level.When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest ser-
vice station where the engine oil should be
topped to the required level with an ap-
proved oil specified in the Factory
Approved Service Products pamphlet.
Display symbol
Display message
Possible cause/consequence
Possible solution
N
Check oil level
when next refueling
SLK 280 and SLK 350 only:
The engine oil level has dropped to
a critical level.
Check the engine oil level (
page 308) and
add engine oil as required (page 312).
If you must add engine oil frequently, have
the engine checked for possible leaks.
USA only:Add 1 qt. engine oil
when next refuelingCanada only:Add 1 liter engine oil
when next refueling
SLK 55 AMG only:
The engine oil level is too low.
Add engine oil (
page 312) and check the
engine oil level (page 308).
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Page 381 of 481
380 Practical hintsWhat to do if …Display symbol
Display message
Possible cause/consequence
Possible solution
N
Engine oil level
Stop, engine off
SLK 55 AMG only:
There is no oil in the engine. There
is a danger of engine damage.
Carefully bring the vehicle to a halt as soon
as possible.
Turn off the engine.
Add engine oil (
page 312) and check the
engine oil level (page 308).
Engine oil level
Visit workshop
SLK 55 AMG only:
The measuring system is malfunc-
tioning.
Have the measuring system checked by an
authorized Mercedes-Benz Center.
Engine oil level
Reduce oil level
SLK 55 AMG only:
You have added too much engine
oil. There is a risk of damaging the
engine or the catalytic converter.
Have oil siphoned or drained off.
Observe all legal requirements with respect
to its disposal.
Engine oil
Visit workshop
SLK 55 AMG only:
There may be water in the engine
oil.
Have the engine oil checked.
Page 460 of 481

459 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 PLUS (Canada vehicles)
(F
lexible S
ervice S
ystem PLUS)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. FSS PLUS evalu-
ates engine 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 accord-
ingly.
GAWR
(G
ross A
xle W
eight R
ating)
(
page 344)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 344)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 345)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 345)
Page 469 of 481

468 IndexDriver’s door
Locking in an emergency 395
Unlocking in an emergency 394
Driving 53
Automatic transmission* 53
Driving off 296
Fuel saving 293
Hydroplaning 297
In winter 299
Instructions 47, 293
Manual transmission 53
Standing water 300
Tires 297
Traveling abroad 301
Driving safety systems 82
ABS 82
BAS 83
ESP
®
84E
Easy-entry/exit feature* 43, 148
Electric air pump 391
Electric air pump (Vehicle tool kit) 388
Electrical system (Technical data) 446
Electronic Stability Program see ESP
®
Emergency call (911) 243
Emergency call system 273
Tele Aid 275
Emergency operations
Automatic transmission* 172
Releasing trunk lid from inside 100
Remote door unlock (Tele Aid) 280
Retractable hardtop 397
Selector lever*, unlocking
manually 396
Unlocking/locking the vehicle 394
Emergency tensioning device see ETD
Emission control 302, 436
Engine
Cleaning see Vehicle care
Compartment 307
Driving after replacement 292
Number 436, 458
Technical data 438
Turning off 61Engine oil 308, 451
Adding 312
Additives 451
Checking level (Control system) 309
Checking level (Dipstick) 311
Consumption 308
Display message 310
Viscosity 458
ESP
®
84, 458
Display message 371
Warning lamp 365
ETD 73, 74, 459
Safety guidelines 68
Seat belt force limiter 74
Exterior lamp switch 110
Exterior lighting
Lamps 401
Replacing bulbs 401
Exterior rear view mirrors see Mirrors
Page 474 of 481

473 Index
N
NAV* menu 132
Navigation system see NAV*
Neck-level heating see AIRSCARF* (Seats)
Night security illumination (Control
system) 145
Normal occupant weight 345
O
Occupant distribution 345
Occupant safety 64
Children 66, 75
Infant and child restraint systems 72,
75
Seat belts 47, 68, 71
Oil see Engine oil
One-touch gearshifting* 164
Operating safety 16, 203
Operating vehicle outside the USA and
Canada 13
Operator’s Manual 10
Ornamental moldings see Vehicle care
Outside temperature indicator 121, 129
Outside temperature/speed 138
Overhead control panel 30
Overspeed range 121, 460P
Paintwork see Vehicle care
Panic alarm 80
Parcel net (Storage compartment) 267
Parking 296
And locking 59
Parking aid see Parking position*
Parking brake 52, 59
Parking lamps 110, 401
Parking position* 108
Activation (Control system) 148
Exterior rear view mirrors 175
Parts service 434
Passenger air bag see Air bags
Passenger compartment 301
Passenger front air bag off indicator
lamp 367
Passenger safety see Occupant safety
Phone book see Telephone*
Plastic parts, cleaning 359
Poly-V-belt drive 437, 460
Potential problems associated with under-
inflated and overinflated tires 332
Power outlet 271
Power seat* see Seats
Power train 461Power washer see Vehicle care
Power windows 246
Operating rear side windows 248
Operating with retractable hardtop
switch 248
Summer opening/convenience
closing* 249
Synchronizing 251
Practical hints
Fuses 430
Lamps in instrument cluster 362
Spare wheel bolts 392
Towing vehicle 426
Vehicle jack 389
What to do if... 362
Premium unleaded gasoline 452
Problems
While driving 58
With vehicle 17
Product information 9
Production options weight 345
Program mode selector switch* 461
Automatic transmission* 163
PSI 345