2009 MERCEDES-BENZ CL COUPE air condition

res, tears, bulges on tyres and deformation,
cracks or severe corrosion on wheels), at
least every 14 days, as well as after driving
off-road or on rough roads. Damaged
wheels can cause a loss of tyre pressure.
R Regularly check the tyre tread depth and
the condition of the tread across the whole
width of the tyre (Y page 298). If neces-
sary, turn the front wheels to full lock in
order to inspect the inner side of the tyre
surface.
R All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not
fit anything onto the valve (such as tyre
pressure monitoring systems) other than
the standard valve cap or other valve caps
approved by Mercedes-Benz for your vehi-
cle.
R Regularly check the pressure of all the tyres
including the spare tyre*, particularly prior
to long trips, and correct the pressure as
necessary (Y page 298).
Notes on driving R
While driving, pay attention to vibrations,
noises and unusual handling characteris-
tics, e.g. pulling to one side. This may indi-
cate that the wheels or tyres are damaged.
If you suspect that a tyre is defective,
reduce your speed and stop the vehicle as
soon as possible to check the wheels and
tyres for damage. Hidden tyre damage
could also be causing the unusual handling
characteristics. If you find no signs of dam-
age, have the wheels and tyres examined
at a specialist workshop, for example at a
Mercedes-Benz Service Centre.
R When parking your vehicle, make sure that
the tyres do not get deformed by the kerb
or other obstacles. If it is necessary to drive
over kerbs, speed humps or similar eleva-
tions, try to do so slowly and at an obtuse angle. Otherwise, the tyres, particularly the
sidewalls, can get damaged. Direction of rotation
Tyres with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation.
i You may fit a spare tyre* against the
direction of rotation. MOExtended run-flat system*
The MOExtended run-flat system allows you
to continue driving the vehicle even when one
or more tyres lose all air pressure.
The MOExtended run-flat system may only be
used in conjunction with the tyre pressure
loss warning system or with the tyre pressure
monitor* and on wheels specifically tested by
Mercedes-Benz.
i Vehicles with the MOExtended run-flat
system are not equipped with the TIREFIT
kit. 34
It is therefore recommended to additionally
equip your vehicle with the TIREFIT kit when
fitting tyres that do not feature run-flat
properties, e.g. winter tyres.
i A TIREFIT kit is available from any quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre.
You will find notes on driving with a flat tyre
in the "Practical advice" section
(Y page 381).
34 Only for certain countries. Tyres and wheels
297Operation
* optional
216_AKB; 2; 3, en-GB
bjanott,
Version: 2.11.7.7 2009-02-27T14:54:17+01:00 - Seite 297 Z
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:27; WK

Tyre tread
G
Risk of accident
Bear in mind that:
R tyre grip decreases rapidly on wet roads
when the tread depth is less than 3 mm.
Thus, you should replace tyres that have
insufficient tread.
R winter tyres should be replaced when the
tread depth is 4 mm or less as they will no
longer provide adequate grip.
R the tread on a tyre may not wear evenly.
Thus, you should regularly check the tread
depth and the condition of the tread across
the entire width of all tyres. If necessary,
turn the steering wheel so that you can see
the tyre tread more easily.
You could otherwise lose control of the vehi-
cle and cause an accident due to the reduced
grip of the tyres on the road. Tyre pressures
i You will find a table of tyre pressures for
various operating conditions on the inside
of your vehicle's fuel filler flap.
The applicable value for the spare
wheel*/"Minispare" emergency spare
wheel* is stated on the spare wheel and in
the technical data section. G
Risk of accident
Tyre pressure that is either too high or too low
has a negative effect on the vehicle’s driving
safety, which could lead you to cause an acci-
dent. Therefore, you should regularly check
the pressure of all the tyres, particularly prior
to long trips, and correct the pressure as nec-
essary.
To test tyre pressure, use a suitable pressure
gauge. The outer appearance of a tyre does
not permit any reliable conclusion about the
tyre pressure. On vehicles fitted with the elec-
tronic tyre pressure monitor*, the tyre pres- sure can be checked in the on-board com-
puter. G
Risk of accident
Do not fit anything else to the tyre valve other
than the standard valve cap. In particular, ret-
rofitted tyre pressure monitors which are
screwed on to the valve may overload it and
cause it to fail. Due to their design, the valve
is kept open continuously, which may lead to
air loss. G
Risk of accident
Should the tyre pressure drop repeatedly:
R check the tyre for foreign bodies.
R check whether the wheel is losing air or the
valve is leaking.
R make sure that only a valve cap approved
by Mercedes-Benz has been fitted on the
tyre valve.
Tyre pressures that are too low have a nega-
tive effect on vehicle safety, which could lead
to your causing an accident.
If possible, you should only correct tyre pres-
sures when the tyres are cold. Depending on
the ambient temperature, the speed you are
driving at and the load on the tyres, the tyre
temperature and thus the tyre pressure may
change by approximately 0.1 bar per 10 †.
Take this into account when checking the
pressure of warm tyres and only correct it if
it is too low for the current operating condi-
tions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R increase the likelihood of tyre damage
R have a negative effect on handling charac-
teristics (e.g. by causing aquaplaning)
i The tyre pressure values given for low
loads are minimum values which offer you
good ride comfort characteristics.
However, you can also use the values given
for higher loads. These are permissible and 298
Tyres and wheelsOperation
* optional
216_AKB; 2; 3, en-GB
bjanott,
Version: 2.11.7.7 2009-02-27T14:54:17+01:00 - Seite 298
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:27; WK

Display messages
Possible causes/consequences and
X
X Solutions Radar sen‐
sor deactiva‐
ted
autom.
See Own‐
er's Man‐
ual
Vehicles with a navigation system*: the vehicle is close to a
radio-telescope facility and, therefore, must not transmit any
radar signals. The radar sensor system has switched off auto-
matically.
The following functions are unavailable:
R Distronic Plus* (Y page 235)
R BAS PLUS* (Y page 49)
R Parking Guidance* (Y page 254)
R PRE-SAFE ®
Brake* (Y page 52)
R Blind Spot Assist* (Y page 260)
X Drive on.
These functions are available again as soon as the vehicle
is far enough away from the radio telescope facility
(Y page 411). Run Flat
Indicator Check
tyre pres‐
sures
then
restart Vehicles with tyre pressure loss warning system: a tyre pres-
sure loss warning message has been displayed.
X
Set the correct tyre pressure for all tyres (Y page 298).
X Restart the tyre pressure loss warning system
(Y page 299). Run Flat
Indicator inopera‐
tive Vehicles with tyre pressure loss warning system: the tyre
pressure loss warning system is faulty.
X
Visit a qualified specialist workshop. Tyre pres‐
sure Check
tyres
G
Risk of accident
Vehicles with a tyre pressure loss warning system: the tyre
pressure loss warning system has detected a significant pres-
sure loss. A warning tone also sounds.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Check the tyres.
X Correct the tyre pressure. If necessary, set the correct tyre
pressure ( Ypage 298).
X If necessary, repair any defective tyres or change the wheel
(Y page 373).
X Restart the tyre pressure loss warning system once the tyre
pressure is correct (Y page 299). Display
messages
327Practical advice
* optional
216_AKB; 2; 3, en-GB
bjanott
,V ersion: 2.11.7.7
2009-02-27T14:54:17+01:00 - Seite 327 Z
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:36; WK

Display messages
Possible causes/consequences and
X
X Solutions Tyre
press.
monitor currently
unavaila‐
ble
Vehicles with a tyre pressure monitor*: no sensor signals can
be received due to radio interference. The tyre pressure mon-
itor* is temporarily malfunctioning.
X
Drive on.
The tyre pressure monitor* restarts automatically as soon
as the cause has been rectified. Tyre
press.
monitor inopera‐
tive
Vehicles with a tyre pressure monitor*: the tyre pressure
monitor* is faulty.
X
Visit a qualified specialist workshop. Tyre
press.
monitor inopera‐
tive No
wheel sen‐
sors
Vehicles with tyre pressure monitor*: the wheels fitted do not
feature suitable tyre pressure sensors.
X
Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitor* is activated automatically after
driving for a few minutes. Please
correct tyre pres‐
sure(s)
Vehicles with tyre pressure monitor*: the pressure is insuffi-
cient in at least one of the tyres or the pressure difference
between the individual tyres is too great. A vehicle icon is
shown in the instrument cluster.
X
Check the tyre pressures at the next opportunity. If neces-
sary, correct the tyre pressure (Y page 298).Check tyre(s)
G
Risk of accident
Vehicles with tyre pressure monitor*: the tyre pressure has
dropped significantly in one or more of the tyres. The wheel
position is displayed in the instrument cluster.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Repair the faulty tyre or replace the wheel (Y page 373).Caution, tyre
defect
G
Risk of accident
Vehicles with tyre pressure monitor*: the pressure has drop-
ped significantly in one or more of the tyres. The wheel posi-
tion is displayed in the instrument cluster.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Repair the faulty tyre or replace the wheel (Y page 373).328
Display
messagesPractical advice
* optional
216_AKB; 2; 3, en-GB
bjanott
,V ersion: 2.11.7.7
2009-02-27T14:54:17+01:00 - Seite 328
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:36; WK

Display messages
Possible causes/consequences and
X
X Solutions ¨ Stop vehi‐
cle Vehi‐
cle too
low
G
Risk of accident
The vehicle level control system* is malfunctioning.
X Do not exceed a maximum speed of 80 km/h.
X Make only slight steering movements. Otherwise, the front
wing or the tyres could be damaged when you drive on.
X Listen for scraping sounds.
X Pull over and stop the vehicle, paying attention to road and
traffic conditions, and select a higher vehicle level.
The vehicle may be raised, depending on the type of mal-
function.
X Visit a qualified specialist workshop. The vehicle level is too low.
X
Pull over and stop the vehicle safely, paying attention to
road and traffic conditions.
After a few seconds, the vehicle level is adjusted and the
display message disappears. ¨ Vehicle
rising
Please
wait
briefly The vehicle level is too low when the vehicle is stationary.
X
Remain stationary.
X Wait until the display message disappears.
The vehicle has reached the level required for driving. ¨ Malfunc‐
tion
G
Risk of accident
The AIRMATIC* function is restricted. The vehicle's handling
characteristics may be affected.
X Do not exceed a maximum speed of 80 km/h.
X Visit a qualified specialist workshop. 6 Restraint
system
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
The restraint system is faulty.
X Visit a qualified specialist workshop. 338
Display
messagesPractical advice
* optional
216_AKB; 2; 3, en-GB
bjanott
,V ersion: 2.11.7.7
2009-02-27T14:54:17+01:00 - Seite 338
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:38; WK

Display messages
Possible causes/consequences and
X
X Solutions  Close
doors to
lock vehi‐
cle At least one door is open.
X
Close all doors and lock the vehicle again. & inopera‐
tive Bat‐
tery low The on-board voltage is too low. The auxiliary heating/venti-
lation* has switched off or cannot be switched on.
X
Drive for a longer distance.
The battery is being charged. The auxiliary heating/venti-
lation *can be reactivated as soon as there is sufficient on-
board voltage. & inopera‐
tive
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heat-
ing* cannot be switched on.
X
Refuel at the nearest filling station. & inopera‐
tive See
Owner's
Manual
The auxiliary heating
*is temporarily malfunctioning or is
defective.
X When the vehicle is on a level surface and the engine has
cooled down, make up to four attempts to switch on the
auxiliary heating*, waiting several minutes between each
attempt.
X If the auxiliary heating* does not switch on, visit a qualified
specialist workshop. + Top up
coolant
See Own‐
er's Man‐
ual The coolant level is too low.
X
Top up the coolant, observing the warning notes before
doing so (Y page 294).
X Have the engine cooling system checked at a qualified spe-
cialist workshop if the coolant needs topping up more often
than usual. ? Coolant
Stop vehi‐
cle Turn
engine off The coolant is too hot.
X
Pull over and stop the vehicle safely and switch off the
engine, paying attention to road and traffic conditions.
X Make sure that the air supply to the radiator is not blocked,
e.g. by slush.
X Wait until the display message disappears before restarting
the engine. Otherwise, there is a risk of engine damage.
X Observe the coolant temperature gauge. 342
Display messagesPractical advice
* optional
216_AKB; 2; 3, en-GB
bjanott
,V ersion: 2.11.7.7
2009-02-27T14:54:17+01:00 - Seite 342
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:38; WK

Display messages
Possible causes/consequences and
X
X Solutions b Left-hand
reversing
lamp
or
Right-
hand
reversing
lamp The left-hand or right-hand reversing lamp is faulty.
X
Visit a qualified specialist workshop. b Left-hand
tail lamp/
brake lamp
or
Right-
hand tail
lamp/
brake lamp The left-hand or right-hand tail lamp/brake lamp is faulty. The
display message will only appear if all LEDs have failed.
X
Visit a qualified specialist workshop. b Intell.
Light Sys‐
tem inop‐
erative The Intelligent Light System is faulty. The lights remain avail-
able without the Intelligent Light System.
X
Visit a qualified specialist workshop. Á Night
View
Assist
inopera‐
tive
Night View Assist* is faulty.
X
Visit a qualified specialist workshop. Á Night
View
Assist
currently
unavaila‐
ble The temperature of the camera is too high.
X
Wait until you see the Night View Assist available
again display message.
You can also:
X Fold the camera cover down (Y page 311).
X Adjust the air distribution of the automatic air conditioning
upwards. Á Night
View
Assist
Lights
must be
on or set
to AUTO
A condition for activating Night View Assist* has not been
met.
X
Turn the light switch to corL. 346
Display
messagesPractical advice
* optional
216_AKB; 2; 3, en-GB
bjanott
,V ersion: 2.11.7.7
2009-02-27T14:54:17+01:00 - Seite 346
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:39; WK

Display messages
Possible causes/consequences and
X
X Solutions 4 Check
engine
oil level
when next
refuelling The engine oil level has dropped to a critical level.
X
Check the engine oil level ( Ypage 293).
X If necessary, top up the engine oil.
X Have the engine checked for leaks if the engine oil needs
topping up more often than usual. h Tyre pres‐
sure Cau‐
tion,
tyre
defect
G
Risk of accident
Vehicles with the tyre pressure monitor*: the pressure is
dropping rapidly in one or more of the tyres.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Repair the faulty tyre or replace the wheel (Y page 373).h Tyre pres‐
sure
Check
tyre(s)
G
Risk of accident
Vehicles with tyre pressure monitor*: the tyre pressure has
dropped significantly in one or more of the tyres.
X Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to traffic conditions as
you do so.
X Repair the faulty tyre or replace the wheel (Y page 373)._ Front
left seat
backrest
not locked
or
Front
right
seat back‐
rest not
locked
G
Risk of injury
The driver's or front passenger's seat backrest is not
engaged. The seat belt will have no effect.
X Engage the driver's seat or front passenger's seat backrest. C There is only a small amount of fuel in the fuel tank.
X
Refuel at the nearest filling station. 8 Reserve
fuel level The fuel level has fallen below the reserve range. The opera-
tion of the auxiliary heating
* can nolonger be guaranteed.
X Refuel at the nearest filling station. ¥ Top up
washer
fluid The washer fluid level has sunk to about 1 litre.
X
Top up the windscreen washer fluid (Y page 295).348
Display messagesPractical advice
* optional
216_AKB; 2; 3, en-GB
bjanott
,V ersion: 2.11.7.7
2009-02-27T14:54:17+01:00 - Seite 348
Dateiname: 6515230602_buchblock.pdf; erzeugt am 04. Mar 2009 11:16:40; WK