Page 395 of 498

394 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Caution
Tire defect
One or more tires are deflating.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel (
page 419).
1
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
1Vehicles with TIREFIT*: Temporarily repair tire using TIREFIT. If tire cannot be temporarily repaired using TIREFIT, contact Roadside Assistance.
Check tires
The tire pressure in one or more tires
is already below the minimum value.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Check and adjust tire pressure as required.
If necessary, change the wheel (
page 419).
1
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 396 of 498

395 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Please rectify
tire pressure
The pressure is too low in one or
more tires.
Check and correct tire inflation pressure as
required (
page 313).
Tire pressure
Caution, tire defect
One or more tires are deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel (
page 419).
1
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
1Vehicles with TIREFIT*: Temporarily repair tire using TIREFIT. If tire cannot be temporarily repaired using TIREFIT, contact Roadside Assistance.
Tire pressure
Check tires
The tire pressure in one or more tires
is already below the minimum value.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Check and adjust tire pressure as required.
If necessary, change the wheel (
page 419).
1
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 397 of 498
396 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
t
Function
unavailable
This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Ê
Trunk open
This message will appear whenever the
trunk is open.
Close the trunk.
W
Washer fluid,
please refill
The fluid level has dropped to about
1/3
of total reservoir capacity.
Add washer fluid (
page 300).
@
Vehicle rising
Your vehicle is adjusting to your level se-
lection.
Vehicle rising
Please wait briefly
The vehicle level is too low.
Do not drive off.
The Airmatic has not yet adjusted the
vehicle level to the necessary height
required for driving.
Wait until the message disappears
from the multifunction display.
You may then drive off.
Page 420 of 498

419 Practical hints
Flat tire
Flat tire
The CLS 55 AMG with Performance
Package* is equipped with a TIREFIT kit.Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flashers.
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake.
Move the gear selector lever to P.
Vehicles with SmartKey:
Turn off the engine (
page 60).
Remove the SmartKey from the starter
switch.Vehicles with KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* button on the gear
selector lever once (
page 60).
Open the driver’s door (this puts the
starter switch in position 0, 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.
Sealing tires with TIREFIT
Small tire punctures, particularly those in
the tread, can be sealed with TIREFIT.
TIREFIT can be used in ambient tempera-
tures down to -4°F (-20°C).
iOpen door only when conditions are
safe to do so.
iCLS 55 AMG with Performance
Package* only.Warning!
G
Keep TIREFIT away from sparks, open flame
or heat source.
Do not smoke.
Page 439 of 498

438 Practical hintsTowing the vehicleWarning!
G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:
the engine will not run
there is a malfunction in the
electro-hydraulic brake system
there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
as that will be necessary to adequately con-
trol the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make certain that the SmartKey
is in starter switch position2.
If the SmartKey is left in the starter switch
position0 for an extended period of time, it
can no longer be turned in the switch. In this
case, the steering is locked. To unlock,
remove SmartKey from starter switch and
reinsert.
Warning!
G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes may only be applied to
the front wheels. Stopping distance is in-
creased! Adapt your driving style according-
ly. For more information, refer to
“Electro-hydraulic brake system”
(page 89).
With the engine not running, there is no
power assistance for the steering system. In
this case, it is important to keep in mind that
a considerably higher degree of effort is nec-
essary to steer the vehicle. Adapt your driv-
ing accordingly.
iTo signal turns while being towed with
the hazard warning flasher in use, turn
SmartKey in starter switch to
position2 and activate the combina-
tion switch for the left or right turn
signal in the usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.
Page 463 of 498
462 Technical dataFuels, coolants, lubricants etc.
Model
Capacity
Fuels, coolants, lubricants etc.
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs
approx. 3.0 oz (85 g) each
High temperature roller bearing grease
Brake system
1.1 US qt (1.05 l)
MB Brake Fluid (DOT 4+)
Cooling system
CLS 500
11.9 US qt (11.3 l)
MB 325.0 Anticorrosion/Antifreeze
CLS 55 AMG
13.84 US qt (13.1 l)
MB 325.0 Anticorrosion/Antifreeze
Fuel tank
21.12 US gal (80.0 l)
Premium unleaded gasoline
Minimum Posted Octane 91 (Avg. of 96
RON/86 MON)
including a reserve of
2.38 US gal (9.0 l)
Page 474 of 498

473 Technical terms
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
adjust settings.
Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.
Distronic*
A driving convenience cruise control
system which helps the driver maintain
a pre-selected speed:
If there is no vehicle directly ahead,
the system operates in the same
way as conventional ->cruise con-
trol.
If a slower moving vehicle is ahead,
Distronic will reduce your vehicle
speed to the extent permitted by
reduced throttle and up to 20%
braking power to maintain the pre-
set minimum following distance.
DOT
(Department o
f Transportation)
(
page 332)
DTR
(->Distronic*)
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.Engine oil viscosity
Measurement for the inner friction
(viscosity) of the oil at different temper-
atures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP
®(Electronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem’s threshold to tighten the seat
belts.
->SRS
Page 476 of 498

475 Technical terms
Maintenance System (U.S. vehicles)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. The Vehicle Main-
tenance System in your vehicle tracks
distance driven and the time elapsed
since your last maintenance service,
calculates other maintenance service
work required, and calls for the next
maintenance service accordingly.
Maximum loaded vehicle weight
(
page 333)
Maximum load rating
(page 333)
Maximum tire inflation pressure
(page 333)Memory function*
Used to store three individual seat,
steering wheel and exterior mirror posi-
tions.
MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline’s
ability to resist undesired detonation
(knocking). The average of both the
MON (Motor Octane Number) and
->RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Multifunction display
The display field in the instrument clus-
ter used to present information provid-
ed by the control system.Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Normal occupant weight
(
page 333)
Overspeed range
Engine speeds within the red marking
on the tachometer dial. Avoid this
engine speed range, as it may result in
serious engine damage that is not cov-
ered by the Mercedes-Benz Limited
Warranty.
Parktronic (Parking assist)*
System which uses visual and acoustic
signals to assist the driver during park-
ing maneuvers.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.