Page 8 of 464

ContentsTechnical data..................................  397
Spare parts service ............................  398
Warranty coverage .............................  399
Loss of Service and Warranty 
Information Booklet......................  399
Identification labels............................  400
Layout of poly-V-belt drive .................  401
CLK 320/CLK 500/CLK 55 AMG .  401
Engine ................................................  402
Rims and tires ....................................  403
Same size tires .............................  404
Mixed size tires ............................  405
Minispare wheel ...........................  406
Electrical system................................  407
Main dimensions................................  408
Weights ..............................................  409Fuels, coolants, lubricants, etc. .........  410
Capacities ....................................  410
Engine oils....................................  412
Engine oil additives ......................  412
Air conditioning refrigerant ..........  412
Brake fluid ....................................  412
Premium unleaded gasoline .........  413
Fuel requirements ........................  413
Gasoline additives ........................  413
Coolants.......................................  414
Windshield washer system and 
headlamp cleaning system* .........  416
Consumer information .......................  417
Uniform tire quality grading .........  417
Technical terms...............................  419Index.................................................  427 
     
        
        Page 249 of 464

249 Controls in detail
Loading
Loading instructions
The total load weight including vehicle oc-
cupants and luggage/cargo should not ex-
ceed the vehicle capacity weight indicated 
on the certification tag which can be found 
on the left door pillar.
The handling characteristics of a fully load-
ed vehicle depend greatly on the load dis-
tribution. It is therefore recommended to 
load the heaviest items being placed to-
wards the front of the vehicle.
Always place items being carried against 
r e a r  s e a t  b a c k r e s t s ,  a n d  f a s t e n  t he m  a s  s e -
curely as possible.
The heaviest portion of the cargo should al-
ways be kept as low as possible since it in-
fluences the handling characteristics of 
the vehicle.
!To prevent damage to the soft top or 
luggage/cargo when lowering the roof:
load trunk only to the height of the 
luggage cover
do not permit luggage/cargo to 
push up the closed luggage cover
do not place anything on the shelf 
behind the roll bar
do not place anything on the soft 
top compartment cover
Warning!
G
Always fasten items being carried as secure-
ly as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown 
around inside the vehicle and can cause in-
jury to vehicle occupants unless the items 
are securely fastened in the vehicle.
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care 
when transporting cargo. Put luggage or car-
go in the trunk if possible. Do not pile lug-
gage or cargo higher than the seat backs. 
Do not place anything on the shelf below the 
rear windows.
Never drive vehicle with trunk open. Deadly 
carbon monoxide (CO) gases may enter ve-
hicle interior resulting in unconsciousness 
and death. 
     
        
        Page 298 of 464

298 OperationTires and wheelsChecking tire inflation pressure
Correct the tire pressure only when tires 
are cold.
Regularly check your tire pressure at inter-
vals of no more than 14 days.
If the tires are warm you should only cor-
rect the tire pressure if it is too low for cur-
rent operating conditions.
A table on the fuel filler flap lists the spec-
ified tire inflation pressures for warm and 
cold tires as well as for various operating 
conditions.Tire pressure changes by approximately 
1.5 psi (0.1 bar) per 18°F (10°C) of air 
temperature change. Keep this in mind 
when checking tire pressure where the 
temperature is different from the outside 
temperature.
Tire temperature and tire pressure are also 
increased while driving, depending on the 
driving speed and the tire load.Check the spare tire periodically for condi-
tion and inflation. Spare tires will age and 
b e c o m e  w o r n  o v e r  t i m e  e v e n  i f  n e v e r  u s e d ,  
and thus should be inspected and replaced 
when necessary.Warning!
G
If the tire pressure drops repeatedly:
Check the tires for punctures from for-
eign objects.
Check to see whether air is leaking from 
the valves or from around the rim.
iThe pressures listed for light loads are 
minimum values offering high driving 
comfort.
Increased inflation pressures listed for 
heavier loads may also be used for light 
loads. These higher pressures produce 
favorable handling characteristics. The 
ride of the vehicle, however, will be 
somewhat harder. Never exceed the 
max. values or inflate tires below the 
min. values listed in the fuel filler flap.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflating tires 
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes, 
etc. 
Do not underinflate tires. Underinflated tires 
wear unevenly, adversely affect handling 
and fuel economy, and are more likely to fail 
from being overheated.
Do not overload the tires by exceeding the 
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s 
door opening). Overloading the tires can 
overheat them, possibly causing a blowout. 
     
        
        Page 355 of 464

355 Practical hints
Opening/closing in an emergency
Press head restraint down in direction 
of arrow4.
Pull hex wrench 2 out and take weight 
off head restraint.
Repeat this procedure on roll bar for 
second head restraint.
Soft top emergency operation
If the soft top cannot be automatically 
closed, check the following:
Is the luggage cover engaged in place 
(page 216)?
Is the ski sack roller blind closed 
(page 217)?
Have the roll bars been released?
Is the trunk lid closed?
Is there sufficient on-board voltage?
Start the engine if necessary.
These messages will also appear in the 
multifunction display (
page 342).
If automatic operation still does not func-
tion properly, you can close the soft top 
manually.
This procedure should be performed with 
great care by two persons.
!Manually closing the soft top is a com-
plicated and technically demanding 
procedure. Close the soft top manually 
in emergency cases only. Otherwise, 
visit an authorized Mercedes-Benz 
Center. Please read the instructions 
fully before beginning operation and 
only undertake it with another person 
and if you feel fully capable of perform-
ing the tasks involved. Warning!
G
It is important that a second person 
helps you. Otherwise, you could become 
trapped or injured.
Remove any wristwatches or jewelry 
such as rings or bracelets. Otherwise, 
they could get caught in the vehicle 
mechanism, causing personal injury to 
yourself or damage to the vehicle.
Always use the grips provided and indi-
cated. Otherwise you could injure your-
self. 
     
        
        Page 384 of 464
384 Practical hintsFlat tire
Unscrew the alignment bolt, install last 
wheel bolt and tighten slightly.Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until the full weight of the 
vehicle is resting on the ground.
Remove the jack.
1 - 5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight. 
Observe a tightening torque of 80 lb-ft 
(110 Nm).
Before storing the jack in the trunk, it 
should be fully collapsed, with handle 
folded in.
Warning!
G
Only use genuine equipment 
Mercedes-Benz wheel bolts. Other wheel 
bolts may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could 
tip over.
Warning!
G
Have the tightening torque checked after 
changing a wheel. The wheels could come 
loose if they are not tightened to a torque of 
80 lb-ft (110 Nm). 
     
        
        Page 397 of 464
397 Technical data
Spare parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main dimensions
Weights
Fuels, coolants, lubricants, etc.
Consumer information 
     
        
        Page 409 of 464
409 Technical data
Weights
Weights
Trunk load max.
220 lb (100 kg) 
     
        
        Page 452 of 464

452 IndexSubmenus
Convenience 149
For settings 131
In control system 133
Instrument cluster 142, 144
Lighting 145
Resetting functions 
in Control system 140
Selecting 140
Settings menu 140
Vehicle 148
Sun visors 170
Supplemental Restraint System 
(SRS) 424
Switching off
Audio system 186
Automatic central locking 
(control system) 149
Engine 54
ESP 80
Hazard warning flasher 124
Headlamps 54Switching on
Audio system 186
Automatic central locking 
(control system) 149
ESP 81
Front fog lamps 122
Front lamps 119
Hazard warning flasher 123
Headlamps 47
High beams 123
Parking lamps 119
Rear fog lamp 122
Windshield wipers 48
Symbol (Distronic*)
Distance warning function* 137
Synchronizing
Power windows 214T
Tachometer 23, 127
Overspeed range 127
Overspeed range (CLK 55 AMG) 127
Tail lamps
Cleaning 307
Replacing bulbs 373, 378
Tar stains 305
Technical data 412
Brake fluid 412
Coolant 410
Coolants 414
Electrical system 407
Engine 402
Engine oil 412
Engine oil additives 412
Fuel requirements 413
Fuels 410
Gasoline additives 413
Lubricants 410
Main dimensions 408
Premium unleaded gasoline 413
Rims and tires 403
Weights 409
Windshield and headlamp 
washer* system 411, 416