Page 418 of 521
417 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
\Please Engage
Roll-over BarThe roll bars are malfunctioning.Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
[Please Release
Roll-over BarThe roll bars are malfunctioning.Operate the roll bars manually
(
page 430).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
_ Steering oil
Service RequiredThe steering gear oil level is too low. There
is a danger of steering gear damage.Have the system checked at an autho-
rized Mercedes-Benz Center.
Warning!G
If the level of steering gear oil in reservoir is
too low, the steering power assistance could
fail. Much greater effort will then be needed
to turn the steering wheel.
Do not add steering oil without checking the
steering system.
Do not drive the vehicle. Have the system
checked at an authorized Mercedes-Benz
Center as soon as possible.
Page 495 of 521

494 Technical data
Fuels, coolants, lubricants, etc.
Coolants
The engine coolant is a mixture of water
and anticorrosion / antifreeze, which
provides:
Corrosion protection
Freeze protection
Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -35°F (-37°C) and
corrosion protection.
If the antifreeze mixture is effective
to -35°F (-37°C), the boiling point of the
coolant in the pressurized cooling system
is reached at
approximately 266°F (130°C).The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for re-
placement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification are used to
renew the coolant concentration or bring it
back up to the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Center.To provide important corrosion protection,
the solution must be at least 50% anticor-
rosion/antifreeze (equivalent to freeze
protection to approximately -35°F
[-37°C]). If you use a solution that is more
than 55% anticorrosion/antifreeze (freeze
protection to approximately -49°F
[-45°C]), the engine temperature will in-
crease due to the lower heat transfer capa-
bility of the solution. Therefore, do not use
more than this amount of anticorro-
sion/antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion /Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance with label instruc-
tions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality,
consult an authorized Mercedes-Benz
Center.
!Add premixed coolant solution only. Adding
water and MB 325.0 Anticorrosion/Antifreeze
separately from each other, could cause engine
damage not covered by the Mercedes-Benz
Limited Warranty
Page 503 of 521

502 Index
Roll bars, Lowering 431
Roll bars, Releasing 430
Soft top, Closing 432–439
Trunk lid, Releasing from inside 117
Trunk lid, Unlocking 428
Unlocking/locking
the vehicle 427, 428
Emergency tensioning device see ETD
Emergency, In case of
Battery, Jump starting 467
First aid kit 421
Flat tire, Changing 452
Fuses 472
Hazard warning flasher 135
Roadside Assistance 12, 298
Towing the vehicle 469
Emission control 318
Emission control information label 479
Emission system warranties 10Engine
Belt layout 480
Block heater (Canada only) 363
Break-in recommendations 308
Cleaning 369
Compartment 323
Malfunction indicator lamp 29, 381
Maximum engine speed 481
Message in display 405
Number 479
Starting 51
Starting difficulties 53
Starting with KEYLESS-GO* 52
Starting with SmartKey 52
Technical data 481
Turning off 60
Turning off with KEYLESS-GO* 60
Turning off with SmartKey 60
Engine coolant see CoolantEngine oil 325, 491
Adding 327, 491
Additives 491
Changing 327, 491
Checking level 322, 325
Consumption 325
Filler cap 327
Filler neck 327
Engine oil level 322
ESP
®92
Messages in display 394–395
Warning lamp 384
ETD 80
Safety guidelines 68
Exterior rear view mirrors 47, 186
Exterior view 22, 24
Page 510 of 521

509 Index
O
Occupant Classification System see OCS
Occupant distribution 359
Occupant safety 64
Active head restraints 81
Air bags 65
Children and air bags 83
Children in the vehicle 83
ETD 80
Fastening the seat belts 48
Front air bags 70
Front passenger front air bag off
indicator lamp 76, 390
Front side impact air bags 70
Head-thorax air bags 71
Infant and child restraint systems 83
LATCH-type child seat anchors 87
OCS 72
Rear side impact air bags* 70
Rear side-impact air bags* 72
Roll bars 82
Seat belts 48, 77
Seat belts, safety guidelines 68
SRS 64
Window curtain air bags 70OCS 72
Self-test 76
Odometer 29
Oil level see Engine oil, checking level
One-touch gearshifting
Gear selector lever 179
Steering wheel
gearshift control* 180
Operating safety 213
Operating the vehicle outside the
USA or Canada 13
Ornamental moldings, Cleaning 372
Outside temperature see Displays
Overdue maintenance service 365
Overhead control panel 33P
Paintwork code 478
Paintwork, Cleaning 368
Panic alarm 89
Parcel net
Front passenger footwell 286
Parking 59, 312
Over combustible materials 59, 312
Parking assist* see Parktronic system*
(CLK 63 AMG (USA), Canada all vehicles)
Parking brake 53, 59
Message in display 404
Warning sounds 54
Parking lamps 129
Messages in display 412
Replacing bulbs 444, 447, 448
Parktronic system* (Canada only)
Malfunction 274
Range of the sensors 272
Switching on/off 274
Warning indicators 273
Warning sounds 273, 274
Parktronic system* (CLK 63 AMG (USA),
Canada all models) 271
Cleaning system sensors 372
Parts service 476