2008 MERCEDES-BENZ CLS COUPE coolant level

5
Central locking
Automatic locking (on-board com-
puter) . . . . . . . . . . . . . . . . . . . . . . . 127
Key . . . . . . . . . . . . . . . . . . . . . . . . . . 66
KEYLESS GO . . . . . . . . . . . . . . . 68, 69
Central locking/unlocking button . . . 70
Central unlocking Key . . . . . . . . . . . . . . . . . . . . . . . . . . 66
KEYLESS GO . . . . . . . . . . . . . . . 68, 69
Centre console
Lower section . . . . . . . . . . . . . . . . . . 32
Upper section . . . . . . . . . . . . . . . . . . 34
Changing a wheel
see Flat tyre
Child-proof locks
Rear doors . . . . . . . . . . . . . . . . . . . . 56
Side windows (rear) . . . . . . . . . . . . . 56
Children
in the vehicle . . . . . . . . . . . . . . . . . . 49
Restraint systems . . . . . . . . . . . . . . 49
Child seat
Automatic recognition . . . . . . . . . . . 51
Automatic recognition (malfunc-
tion) . . . . . . . . . . . . . . . . . . . . . . . . 243
ISOFIX . . . . . . . . . . . . . . . . . . . . . . . 55
Recommendations . . . . . . . . . . . . . . 54
Suitable positions . . . . . . . . . . . . . . 53
Cigarette lighter . . . . . . . . . . . . . . . . 181
Cockpit Overview . . . . . . . . . . . . . . . . . . . . . 22 Collapsible wheel
Pumping up . . . . . . . . . . . . . . . . . . 285
Storage location . . . . . . . . . . . . . . . 218
Technical data . . . . . . . . . . . . . . . . 308
COMAND . . . . . . . . . . . . . . . . . . . . . . . 114
On-board computer . . . . . . . . . . . . 114
Constant headlamp mode
Setting (on-board computer) . . . . . 125
Consumption statistics (on-board
computer) . . . . . . . . . . . . . . . . . . . . . . 130
Convenience closing . . . . . . . . . . . . . 100
Coolant . . . . . . . . . . . . . . . . . . . . . . . . 196
Checking the level . . . . . . . . . . . . . 196
Display message . . . . . . . . . . 229, 232
Mixture ratio . . . . . . . . . . . . . . . . . 316
Temperature gauge . . . . . . . . . . . . 110
Warning lamp . . . . . . . . . . . . . . . . . 246
Cruise control . . . . . . . . . . . . . . . . . . 132
Display message . . . . . . . . . . . . . . 227
Cup holder . . . . . . . . . . . . . . . . . . . . . 172 D
Dashboard see Cockpit


Date
Setting (on-board computer) . . . . . 124
Daytime driving lights
see Constant headlamp mode Delayed switch-off
Exterior lighting (on-board com-
puter)

. . . . . . . . . . . . . . . . . . . . . . . 126
Interior lighting (on-board com-
puter) . . . . . . . . . . . . . . . . . . . . . . . 126
Diesel
Low outside temperatures . . . . . . . 193
Diesel engine
Winter driving . . . . . . . . . . . . . . . . . 193
Digital speedometer . . . . . . . . . . . . . 116
Dipped-beam headlamps Automatic headlamp mode* . . . . . . 92
Display message . . . . . . . . . . . . . . 233
Symmetrical . . . . . . . . . . . . . . . . . . 208
Display message . . . . . . . . . . . . . . . . 219
Displaying . . . . . . . . . . . . . . . . . . . 121
Service display . . . . . . . . . . . . . . . . 209
Symbol messages . . . . . . . . . . . . . 228
Text messages . . . . . . . . . . . . . . . . 220
Up (AMG menu) . . . . . . . . . . . . . . . 116
Distance warning function . . . . . . . . 138
Distance warning lamp . . . . . . . . . . . 138
Distronic . . . . . . . . . . . . . . . . . . . . . . . 135
Cleaning the sensors . . . . . . . . . . . 213
Cover . . . . . . . . . . . . . . . . . . . . . . . 213
Display message . . . . . . . . . . . . . . 221
Distance warning function . . . . . . . 138
Driving tips . . . . . . . . . . . . . . . . . . . 141
Warning lamp . . . . . . . . . . . . . . . . . 245 Index
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 5

Engine compartment
196Example of a vehicle with a diesel engine (CLS 320
CDI)
1
Cover
X Unscrew cap 1 and remove it.
X Top up by the amount of oil required.
! Do not add too much oil. If too much oil
is added, there is a risk of damage to the
engine or the catalytic converter.
X Screw cap 1 onto the filler neck.
H Environmental note
When topping up the oil, take care not to
spill any. Oil must not be allowed to escape
into the soil or waterways. You would oth-
erwise be damaging the environment.
Coolant
G Risk of injury
The cooling system is pressurised. There-
fore, only unscrew the cap once the engine
has cooled down. The coolant temperature
gauge must display less than 70°C. You
could otherwise be scalded by escaping hot
coolant.
Coolant consists of water and antifreeze/cor-
rosion inhibitor. Only check the coolant level
when the vehicle is on a level surface and the
engine has cooled down. Checking the coolant levelThe expansion tank is located in the engine
compartment on the left when viewed in the
direction of travel.
1
Cover
2 Expansion tank
3 Marker bar
X Slowly turn cap 1 by half a turn anti-clock-
wise to allow excess pressure to escape.
X Turn cap 1 further anti-clockwise and
remove it.
There is sufficient coolant in expansion
tank 2 if the coolant is level with marker
bar 3 in the filler neck when cold or
approximately 1.5 cm higher when hot.
Operation
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 196

Display messages
229Display messages Possible cause/consequence Possible solution
V At least one door is open. The display
symbol shows you which doors are open. X
Close the doors. D The cooling fan for the coolant is faulty. X
If the coolant temperature is less than 120†,
you can continue driving to the nearest quali-
fied specialist workshop.
X In doing so, avoid heavy loads on the engine
(e.g. driving in mountainous terrain) and stop-
and-go driving. @ Vehicle rising
Vehicles with AIRMATIC Dual Control*:
your vehicle is adjusting to the level you
have selected.
@ Vehicle rising
Please wait
Vehicles with AIRMATIC Dual Control*:
the
vehicle level is too low when the vehi-
cle is stationary. X
Do not pull away.
X Wait until the display message disappears.
The vehicle has reached the level required for
driving. Practical advice
* optional
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 229 Z

Display messages
233Display messages Possible cause/consequence Possible solution
B Top up coolant See
Owner's Manual The coolant level is too low. X
Top up the coolant, observing the warning
notes before doing so (Y page 196).
X Have the coolant system checked at a qualified
specialist workshop if the coolant needs top-
ping up more often than usual. . Dipped beam, left
or
Dipped beam, right The right-hand or left-hand dipped-beam
headlamp is faulty. X
Halogen headlamp: replace the bulb
(Y page 271).
X Bi-xenon headlamp*: visit a qualified special-
ist workshop. . AUTO lights inop-
erative The light sensor is faulty. Constant head-
lamp mode is switched on. X
Switch the lights to manual control in the on-
board computer ( Y page 125).
X Switch the lights on and off using the light
switch. . Rear left turn sig-
nal

Back-up bulb on
or
Rear right turn
signal Back-up
bulb on The rear left-hand or rear right-hand turn
signal is faulty.
This
display message will only appear if all
LEDs have failed. X
Visit a qualified specialist workshop. Practical advice
* optional
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 233 Z

Display messages
237Display messages Possible cause/consequence Possible solution
N Check engine oil
level when next
refuelling The engine oil level has dropped to a crit-
ical level. X
Check the engine oil level (Y page 195) and top
up the engine oil if necessary.
X Have the engine checked for leaks if the engine
oil needs topping up more often than usual. ± Display malfunc-
tion Consult work-
shop One or more electronic systems are
unable to deliver information to the on-
board computer. The following systems
may have failed:
R
Coolant temperature gauge
R Rev counter
R Cruise control or Speedtronic display X
Visit a qualified specialist workshop. H Tyre pressure Cau-
tion Tyre defect One or more tyres are losing air rapidly.
The affected wheel is highlighted in the
tyre pressure display of the tyre pressure
monitor*. X
Stop the vehicle without making any sudden
steering

or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Repair or change the tyre (Y page 276). Practical advice
* optional
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 237 Z

Troubleshooting
246 Problem Possible cause/consequence Suggested solutions
l
The red distance warning
lamp* lights up while the
vehicle is in motion. You
will also hear a warning
tone. G
Risk of accident
You are approaching a vehicle in
front at too great a speed or Dis-
tronic*
has detected a stationary
obstacle in your line of travel. X
Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to brake
or take evasive action. D
The red coolant warning
lamp comes on while the
engine is running. There is insufficient coolant in the
expansion tank.
The coolant is too hot and the
engine is no longer being cooled
sufficiently. X
Stop the vehicle as soon as possible. Pay attention to the traffic
conditions as you do so.
X Allow the engine and coolant to cool.
X Check the coolant level. Observe the warning notes
(Y page 196). Top up the coolant if necessary.
X Have the coolant system checked at a qualified specialist work-
shop if the coolant needs topping up more often than usual. D
The red coolant warning
lamp comes on while the
engine is running. If the coolant level is correct, the
radiator fan may be faulty.
The coolant is too hot and the
engine is no longer being cooled
sufficiently. X
If the coolant temperature is less than 120†, you can continue
driving to the nearest qualified specialist workshop.
X In doing so, avoid heavy loads on the engine (e.g. driving in moun-
tainous terrain) and stop-and-go driving. Practical advice
* optional
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 246

Troubleshooting
247Problem Possible cause/consequence Suggested solutions
D
The red coolant warning
lamp comes on while the
engine is running. You will
also hear a warning tone. The coolant level is too low.
The coolant temperature has
exceeded 120 †. The engine is
not being cooled sufficiently and
may be damaged. X
Stop the vehicle as soon as possible. Pay attention to the traffic
conditions as you do so.
X Allow the engine and coolant to cool.
X Check the coolant level. Observe the warning notes
(Y page 196). Top up the coolant if necessary.
X Have the coolant system checked at a qualified specialist work-
shop if the coolant needs topping up more often than usual. D
The red coolant warning
lamp comes on while the
engine is running. You will
also hear a warning tone. If the coolant level is correct, the
radiator fan may be faulty.
The coolant temperature has
exceeded 120 †. The engine is
not being cooled sufficiently and
may be damaged. X
Do not continue driving under any circumstances.
X Consult a qualified specialist workshop. ±
The yellow engine diagnos-
tics warning lamp comes
on
while the engine is run-
ning. Vehicles with a diesel engine: the
fuel tank has run dry. X
Start the engine three to four times after refuelling.
Emergency running mode is cancelled. The vehicle need not be
checked. Practical advice
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 247 Z

Troubleshooting
256 Problem Possible cause/consequence Suggested solutions
Vehicles with a petrol engine:
The engine is not running
smoothly and is misfiring. The engine electronics or a
mechanical component of the
engine control unit have been
damaged. X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist work-
shop.
Otherwise,
non-combusted fuel may get into the catalytic converter
and damage it. A coolant temperature of over
120 °C is displayed. The coolant
warning

lamp may also be on and
a warning tone may sound
(Y page 110). The coolant level is too low. The
coolant
is too hot and the engine
is no longer being cooled suffi-
ciently. X
Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 196). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct, the
radiator fan may be faulty. The
coolant

is too hot and the engine
is no longer being cooled suffi-
ciently. X
If the coolant temperature is less than 120°C, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. when driving on
mountain roads and stop/start driving. Practical advice
219_AKB; 2; 4, en-GB
mkalafa,
2007-11-13T09:28:36+01:00 - Seite 256