Page 397 of 506
396 Practical hintsWhere will I find...?In the case of a flat tire, you may
temporarily use the Minispare wheel when
observing the following restrictions:
Do not exceed a vehicle speed of
50 mph (80 km/h).
Drive to the nearest tire repair facility
to have the flat tire repaired or
replaced as appropriate.
Do not operate vehicle with more than
one Minispare wheel mounted.
More information can be found in the
“Technical data” section (
page 445).Minispare wheel bolts
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel or other
steel rims (located in trunk with spare
wheel)
!Wheel bolts2 must be used when
mounting the Minispare wheel. The use
of any wheel bolts other than wheel
bolts2 for the Minispare will physical-
ly damage the vehicle's brakes.
Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
Page 423 of 506

422 Practical hintsFlat tire
Preparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.
Turn on the hazard warning flashers
(page 127).
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake (
page 55).
Move the gear selector lever toP.
Vehicles with SmartKey:
Turn off the engine (
page 56).
Remove the SmartKey from the starter
switch.Vehicles with SmartKey with
KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* start/stop button on the
gear selector lever once (
page 57).
Open the driver’s door (this puts the ig-
nition in position0, same as with the
SmartKey removed from the starter
switch). The driver’s door then can be
closed again.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Warning!
G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted. Adapt your driving style
accordingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted,
ensure proper tire inflation pressure and do
not exceed a vehicle speed of 50 mph
(80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
iOpen door only when conditions are
safe to do so.
Page 424 of 506

423 Practical hints
Flat tire
Mounting the Minispare wheel
Preparing the vehicle
Prepare the vehicle as described on
(page 422).
Take the wheel wrench and the jack
out of the trunk (
page 394).
Take the Minispare wheel and wheel
bolts out of the trunk (
page 394).
Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizable objects.
One wheel chock is included with the
vehicle tool kit (
page 391).
When changing wheel on a level surface:
Place the wheel chock in front of and
another sizable object behind the
wheel that is diagonally opposite to the
wheel being changed.
When changing wheel on a hill:
Place the wheel chock and another
sizable object on the downhill side
blocking both wheels of the other axle.
1Wheel wrench
On wheel to be changed, loosen but do
not yet remove the wheel bolts (ap-
proximately one full turn with wrench).
The jack take-up brackets are located di-
rectly behind the front wheel housings and
in front of the rear wheel housings.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on a level surface. Make sure the jack arm is
fully seated in the jack take-up bracket. Al-
ways lower the vehicle onto sufficient ca-
pacity jackstands before working under the
vehicle.
Page 426 of 506

425 Practical hints
Flat tire
Mounting the new wheel
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel or other
steel rims (located in trunk with spare
wheel)
Clean contact surfaces of wheel and
wheel hub.
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert wheel bolts and tighten them
slightly.
!Wheel bolts2 must be used when
mounting the Minispare wheel. The use
of any wheel bolts other than wheel
bolts 2 for the Minispare will physical-
ly damage the vehicle's brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while in-
stalling first wheel bolt.Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.
Page 450 of 506
449 Technical data
Rims and tires
Minispare wheel
CLK 320
CLK 320 (Appearance Package)
CLK 500
CLK 55 AMG
Rim
3.5 B x 16 H2
3.5 B x 17 H2
3.5 B x 17 H2
Wheel offset
0.67 in (17 mm)
0.67 in (17 mm)
0.67 in (17 mm)
Tire
T 125/90 R 16 98M
1
1Must not be used with snow chains.
T 125/80 R 17 99M
1
T 125/80 R 17 99M
1
Page 477 of 506

476 IndexF
Fahrenheit
Setting temperature units 145
Fastening the seat belts 43
Fine adjustment
Cruise control 259
First aid kit 391
Flat tire 422
Lowering the vehicle 426
Minispare wheel 394
Mounting the Minispare wheel 423
Preparing the vehicle 422
Flexible Service System (Canada vehicles)
see Maintenance service system
Floormates*
Installing 275
Removing 275
Floormats* 275
Fog lamp, rear 125, 415
Fog lamps
Replacing bulbs 414
Fog lamps, front
Messages in display 383
Replacing bulbs 415
Switching on 125
Front air bags 65Front lamps
Messages in display 383–385
Replacing bulbs 414, 416
Switching on 122
Front passenger front
air bag off indicator lamp 79, 361
Front seat head restraints
Installing 114
Power seat 114
Removing 114
Front seats
Seat heating* 117
Ventilation* 118
FSS (Canada vehicles) see
Maintenance service system
Fuel 303
Additives 457
Fuel reserve warning lamp 359
Gasoline additives 457
Premium
unleaded gasoline 303, 454, 456
Requirements 457
Reserve warning 25
Technical data 453
Fuel additives 457Fuel cap
Message in display 356
Fuel consumption statistics
After start 158
Since last reset 159
Fuel filler flap 302
Locking 302
Opening 399
Unlocking 302
Fuel requirements 457
Fuel reserve tank
Message in display 382
Fuel tank
Capacity 454
Filler flap 302
Fuels, coolants, lubricants etc.
Capacities 453
Functions (control system) 134, 137
Resetting 143
Fuse box 437
Fuse chart 436
Fuse extractor 436
Page 486 of 506

485 Index
Positions (Memory function)
Recalling from memory 120
Storing into memory 120
Potential problems associated
with underinflated
and overinflated tires 325
Power assistance 291
Power seat
Adjusting backrest tilt 38
Adjusting head restraint height 38
Adjusting head restraint tilt 39
Adjusting seat cushion tilt 38
Adjusting seat height 38
Front seat head restraints 114
Seat fore and aft adjustment 38
Power train 464
Power washer 346
Power windows 239
Blocking of rear window operation 82
Side windows 239
Synchronizing 243Practical hints
Collapsible wheel chock 394
First aid kit 391
Fuses 436
Lamp in center console 361
Lamps in instrument cluster 354
Messages in the display 363
Minispare wheel 394
Minispare wheel bolts 396
Towing the vehicle 432
Unlocking/locking
in an emergency 397
Vehicle jack 393
Vehicle tool kit 391
Premium unleaded gasoline 456
Problems
While driving 54
With vehicle 17
Product information 9
Production options weight 337
Program mode selector switch 464
Automatic transmission 169
PSI 337Q
Quick search
Phone book* 162
R
Radio
Selecting stations 139
Radio operation 209
Radio see Radio operation
Radio transmitters,
control and operation 299
Radio*
Selecting stations (satellite) 140
Range (distance to empty)
Calling up 159
Reading lamp 29
Rear fog lamp 415
Bulb 415
Switching on 125
Rear lamp bulbs
Replacing 420
Rear lamps see Tail lamps
Rear passenger compartment
Adjustable air vents 200
Rear passenger compartment
Adjustable air vents 189
Page 492 of 506

491 Index
Storing
Minispare wheel 395
station (satellite radio) 217
Storing (Memory function)
Positions into memory 120
Storing tires 315
Submenus
Convenience 156
For settings 135
In control system 137
Instrument cluster 145, 147
Lighting 151
Resetting functions
in Control system 143
Selecting 143
Settings menu 143
Vehicle 155
Substitute lamps
Bulbs 414
Sun visors 178
Supplemental Restraint System see SRSSwitching off
Audio system 204
Automatic central locking
(control system) 155
Engine 56
ESP 87
Hazard warning flasher 128
Headlamps 56
Parktronic system* 263
Switching on
Audio system 204
Automatic central locking
(control system) 155
ESP 88
Front fog lamps 125
Front lamps 122
Hazard warning flasher 128
Headlamps 50
High beams 126
Parking lamps 122
Parktronic system* 263
Rear fog lamp 125
Windshield wipers 52
Synchronizing
Power windows 243T
Tachometer 25, 132
Overspeed range 132
Tail lamps
Cleaning 348
Replacing bulbs 415, 420
Tar stains 346
Technical data 456
Brake fluid 456
Coolant 453
Coolants 458
Electrical system 450
Engine 444
Engine oil 455
Engine oil additives 455
Fuel requirements 457
Fuels 453
Gasoline additives 457
Lubricants 453
Main dimensions 451
Premium unleaded gasoline 456
Rims and tires 445
Weights 452
Windshield and headlamp
washer* system 454, 460