Page 425 of 498

424 Practical hintsFlat tirePreparing the vehicle
Prepare the vehicle as described under 
“Preparing the vehicle” on this page.
Take the spare wheel out of the trunk 
(page 398).
Take the wheel wrench and the jack 
out of the trunk (
page 398).
Lifting the vehicle
Prevent the vehicle from rolling away 
by blocking wheels with wheel chocks 
or other sizeable objects.
When changing wheel on a level surface:
Place the wheel chock in front of and 
another sizeable object behind the 
wheel that is diagonally opposite to the 
wheel being changed.Always try lifting the vehicle using the jack 
on a level surface. However, should cir-
cumstances require you to do so on a hill, 
place the wheel chock and the other size-
able object as follows: 
Place the wheel chock and another 
sizeable object on the downhill side 
blocking both wheels of the axle not 
being worked on.
1Wheel wrench
On wheel to be changed, loosen but do 
not yet remove the wheel bolts (ap-
proximately one full turn with 
wrench1).
Warning!
G
The jack is designed exclusively for jacking 
up the vehicle at the jack take-up brackets 
built into either side 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 level surface. Be sure that 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 427 of 498

426 Practical hintsFlat tire
Unscrew the 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.Mounting the 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.
!Do not place wheel bolts in sand or dirt. 
This could result in damage to the bolt 
and wheel hub threads.
Warning!
G
Vehicles with collapsible tire:
Inflate collapsible tire only after the wheel is 
properly mounted.
Inflate the collapsible tire using the electric 
pump (
page 427) 
before
 lowering the 
vehicle.
!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 
repaired immediately. Do not continue to 
drive under these circumstances! Contact 
an authorized 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. Be 
sure to use the correct wheel bolts. 
     
        
        Page 428 of 498

427 Practical hints
Flat tire
Unscrew the alignment bolt, install last 
wheel bolt and tighten slightly.
Vehicles with Minispare wheel:
Continue the procedure by following 
the instructions under “Lowering the 
vehicle” (
page 429).
Vehicles with collapsible tire:
Continue the procedure by following 
the instructions under “Inflating the 
collapsible tire” and then “Lowering the 
vehicle” (
page 429).Inflating the collapsible tire
Take the electric air pump out of the 
trunk (
page 398).
1Flap
2Air pump switch
3Electrical plug
4Air hose with pressure gauge and vent 
screw
5Union nut
Open flap1 on the air pump.
Pull out electrical plug3 and air hose 
with pressure gauge4.
Make sure the vent screw on air hose 
4 is closed.
Remove the valve cap from the tire 
valve.
Warning!
G
Only use Genuine equipment 
Mercedes-Benz wheel bolts. Other wheel 
bolts may come loose.
Do not tighten the wheel bolts when the 
vehicle is raised. Otherwise the vehicle 
could fall off the jack.
!Do not lower the vehicle before inflat-
ing the collapsible tire. Otherwise the 
rim may be damaged.Warning!
G
Observe instructions on air pump label.
 
     
        
        Page 430 of 498

429 Practical hints
Flat tire
Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
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 96 lb-ft 
(130 Nm).
Before storing the jack in the trunk, it 
should be fully collapsed.
MOExtended system*
The MOExtended system allows you to 
continue driving your vehicle even if there 
is a total loss of pressure in one or more 
tires.
You may only use the MOExtended system 
in conjunction with the Run Flat Indicator* 
or the Advanced TPMS* (Canada only) 
(page 314).
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 
96 lb-ft (130 Nm).iWrap the damaged wheel in the protec-
tive film that comes with the spare 
wheel and put the wheel in the trunk.
You can also place the damaged wheel 
down into the spare wheel well. In this 
case, you must stow the luggage bowl 
in the trunk.
!The maximum distance in emergency 
mode depends on the vehicle’s load. It 
is 30 miles (50 km) if the vehicle is par-
tially loaded and 18 miles (30 km) if the 
vehicle is fully loaded.
The point at which the maximum driv-
ing distance begins in emergency 
mode is when the warning message 
appears in the multifunction display 
indicating that there is a loss of tire 
inflation pressure.
Do not exceed the maximum speed of 
50 mph (80 km/h). 
     
        
        Page 458 of 498

457 Technical data
Rims and tires
Spare wheel
CLS 500 
CLS 500 (Sport Package*)
CLS 55 AMG
Rim
4.0 B x 17 H2
6.0 B x 18 H2
Wheel offset
1.34 in (34 mm)
0.98 in (25 mm)
Minispare tire
T 155/70 R17 110M
1
1Must not be used with snow chains.
 -
Collapsible tire
 -
175/55-18 95P
1
!Please compare the recommended tire 
inflation pressure for your vehicle with 
the tire inflation pressure on the yellow 
label located on the spare wheel rim.
If the tire inflation pressure on the yel-
low label on the spare wheel rim differs 
from the values given in this Operator’s 
Manual, inflate the spare wheel tire to 
the recommended tire inflation pres-
sure given on the yellow label on the 
spare wheel rim.
iPlease note that the tire inflation pres-
sure of the Minispare tire and the 
collapsible tire differs from the tire 
inflation pressure of the road tires.
Make sure the Minispare tire is inflated 
to approximately 61 psi (4.2 bar).
Inflate the collapsible tire to approxi-
mately 51 psi (3.5 bar).
iThe CLS 55 AMG with Performance 
Package* does not have a spare wheel. 
The CLS 55 AMG with Performance 
Package* is equipped with TIREFIT 
(page 419). 
     
        
        Page 473 of 498

472 Technical termsBar
(
page 332)
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 332)
Bi-Xenon headlamps*
Headlamps which use an electric arc as 
a light source and produce a more in-
tense light than filament headlamps. 
Bi-Xenon headlamps produce low 
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service 
center which can help you with any 
questions about your vehicle and pro-
vide assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control 
vehicle 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 332)
Collapsible tire
An especially compact spare tire that 
must be inflated with a provided air 
pump before using. It should only be 
used to bring the vehicle to the nearest 
service station.
COMAND
(Cockpit M
anagement and D
ata 
System)
Information and operating center for 
vehicle sound and communications 
systems, including the radio and navi-
gation system, as well as other optional 
equipment (CD changer, telephone, 
etc.). 
     
        
        Page 485 of 498

484 IndexEmission control 289
Emission control information label 446
Emission control system warranties 10
Emission control vacuum line routing 
diagram label 446
Engine 448
Belt layout 447
Block heater* (Canada only) 337
Break-in recommendations 278
Cleaning 344
Compartment 293
Malfunction indicator lamp 355
Maximum engine speed 448
Number 473
Starting 49
Technical data 448
Turning off with the key 60
Engine compartment
Hood 293Engine oil
Adding 296
Additives 464
Changing 464
Checking level 294
Consumption 294
Filler neck 297
Messages in display 295, 382, 383
Recommended engine oils rand 
oil filters 464
Viscosity 473
Engine oil level 295
ESP
®
86, 473
Synchronizing 368
Warning lamp 353
ETD 73, 473
Safety guidelines 68
Exterior lamp switch 134
Exterior rear view mirrors 44
Parking position 169, 192F
First aid kit 398
Flat tire 419
Collapsible tire 426, 427
Jacking up the vehicle 425
Lowering the vehicle 429
Mounting the spare wheel 423, 426
Preparing the vehicle 419
Spare wheel 423
TIREFIT kit* 419
Flexible Service System 
(Canada vehicles) 339
Flexible Service System (FSS) 474
Floormats 260
Fog lamp, rear 138
Fog lamps
Messages in display 387, 388, 389, 
390
Fog lamps, front
Switching on 137
Front lamps 412
Replacing bulbs 414
Switching on 134 
     
        
        Page 494 of 498

493 Index
SmartKey with KEYLESS-GO* 103
Battery check lamp 107
Changing 409
Global locking and unlocking 107
Loss of 111
Messages in display 385, 386, 389
Remote controls 103
Turning off the engine 60
Unlocking with 35
Snow chains 337
Spare fuses 441
Spare wheel 398, 457
Speed settings
Cruise control 225
Speedometer
Displays 228
Speedometer display mode
Selecting 160
Sporty driving style 238
SRS 477
Indicator lamp 25, 64, 359
Messages in display 393
Standing lamps 134
Standing water, Driving through 287Starter switch 36
Positions 36
Starting difficulties 51
Starting the engine 49
Steering wheel
Cleaning 349, 350
Storage compartments 30, 251
Center armrest 252
Center console 252
Glove box 251
Seat 253
Storing
Tires 303
Storing (Memory function*)
Positions into memory 132
Submenus
Selecting 158
Settings menu 158
Sun visors 193
Supplemental Restraint System 
(SRS) 477
Suspension tuning
For comfortable driving style 238
For sporty driving style 238T
Tachometer 146
Overspeed range 146
Tail lamps
Cleaning lenses 346
Replacing bulbs 416
Taillamps
Messages in display 390
Tar stains 343
Technical data
Rims and tires 449
Tele Aid 261
Call priority 268
Emergency calls 263
Hands-free microphone 29
Information 267
Initiating an emergency call 
manually 264
Messages in display 393
Remote door unlock 269
Roadside assistance 265
SOS button 264
Stolen vehicle Recovery services 269
System self-check 263