Page 392 of 506
391 Practical hints
Where will I find...?
Where will I find...?
First aid kit
The first aid kit is located in the trunk on 
the right side secured by a hook and loop 
fastener.
1First aid kit
2Hook and loop fastener
Loosen hook and loop fastener2.
Remove first aid kit1.
Vehicle tool kit
The vehicle tool kit is stored in the com-
partment underneath the trunk floor.
The following is included:
Towing eye bolt
Vehicle jack
Wheel wrench
Alignment bolt
Spare wheel bolts
Spare fuses
Fuse extractor
Straps for soft top emergency opera-
tion
Collapsible wheel chock
A pair of gloves Removing the vehicle tool kit
Remove trunk floor cover from trunk.
1Retaining screw
2Storage well casing
iCheck expiration dates and contents 
for completeness at least once a year 
and replace missing/expired items.
iHex wrench:
You will find the hex wrench for 
manually operating the roll bars 
(page 401) or the soft top 
(page 403) at the lower edge of the 
storage well casing.
 
     
        
        Page 425 of 506
424 Practical hintsFlat tire2Jack
3Take-up bracket
Place jack 2 on firm ground.
Position jack2 under take-up 
bracket3 so that it is always vertical 
(plumb-line) as seen from the side, 
even if the vehicle is parked on an 
incline.
Jack up the vehicle until the wheel is a 
maximum of 1.2 in (3 cm) from the 
ground. Never start engine while 
vehicle is raised.Removing the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and 
remove.
Replace this wheel bolt with alignment 
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.
Warning!
G
The jack is intended only for lifting the vehi-
cle briefly for wheel changes. It is not suited 
for performing maintenance work under the 
vehicle.
Never start the engine when the vehicle 
is raised.
Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt. 
This could result in damage to the bolt 
and wheel hub threads. 
     
        
        Page 427 of 506
426 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, it should be fully 
collapsed, with handle folded in (storage 
position) (
page 393).
Store the jack and the other vehicle 
tools in the trunk.
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 
fall off the jack.
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 462 of 506

461 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up 
during braking so that the vehicle can 
continue to be steered.
Accessory weight
(
page 335)
Air pressure
(page 335)
Alignment bolt
Metal pin with thread. The centering 
pin is an aid used when changing a tire 
to align the wheel with the wheel hub.
Aspect ratio
(page 335)
Bar
(page 336)
BAS
(Brake A
ssist S
ystem)
System for potentially reducing braking 
distances in emergency braking situa-
tions. The system is activated when it 
senses an emergency based on how 
fast the brake is applied.Bead
(
page 336)
Bi-Xenon headlamps*
Headlamps which use an electric arc as 
the light source and produce a more in-
tense light than filament headlamps. 
Bi-Xenon headlamps produce low 
beam and high beam.
CAC
(Customer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide 
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or 
windshield wiping.Cockpit
All instruments, switches, buttons and 
indicator/warning lamps in the passen-
ger compartment needed for vehicle 
operation and monitoring.
Cold tire inflation pressure
(
page 336)
COMAND
(Cockpit M
anagement and D
ata Sys-
tem)
Information and operating center for 
vehicle sound and communications 
systems, including the radio and the 
navigation system, as well as other op-
tional equipment (CD changer*, tele-
phone, etc.).
Control system
The control system is used to call up 
vehicle information and to change 
component settings. Information and 
messages appear in the multifunction 
display. The driver uses the buttons on 
the multifunction steering wheel to 
navigate through the system and to ad-
just settings. 
     
        
        Page 495 of 506

494 IndexUpgrade signals
Tele Aid 282
Uphill driving
Cruise control 257
Upholstery
Cleaning 352
Upshifting 165
Useful features 269
Ashtray (Center console) 273
Ashtray (Rear seat) 273
Cigarette lighter 274
Electrical outlet 275
Floormats* 275
Storage compartments 269
Tele Aid 277
Telephone* 276V
Vacuum line routing diagram label 442
Vehicle
Individual settings 142, 144
Locking 27
Locking in an emergency 398
Lowering 426
Service battery 427
Towing 432
Unlocking 27
Unlocking in an emergency 397
Vehicle battery 311, 427
Messages in display 374
Vehicle capacity weight 338
Vehicle care 345
Cup holder 351
Engine cleaning 347
Gear selector lever 351
Hard plastic trim items 351
Headlamps 348
Instrument cluster 351
Leather upholstery 352
Light alloy wheels 350
Nubuck leather upholstery 
(CLK 55 AMG) 352
Ornamental moldings 348Paintwork 346
Parktronic system* sensor 349
Plastic and rubber parts 352
Power washer 346
Seat belts 351
Soft top 347
Steering wheel 351
Tail lamps 348
Tar stains 346
Upholstery 352
Vehicle washing 347
Window cleaning 350
Wiper blades 349
Wood trims 352
Vehicle identification number (VIN) 442
Vehicle jack 393
Vehicle lighting
Checking 304
Vehicle loading terminology 335
Vehicle maximum load on the tire 338
Vehicle status message memory 141
Calling up 141
Displaying 141
Vehicle status messages 363
Vehicle tool kit 391
Alignment bolt 391