Page 205 of 464

205 Controls in detail
Audio system
Selecting a category
Press
PTY
soft key.
The current PTY category of the
station is displayed.
Press
<<<
or
>>>
soft key.
This switches between the
individual categories.
When changing the category, the
channel selected last in the new
category becomes audible.The system will automatically switch to
a station of the selected category if the
currently selected station is not of the
selected category. Otherwise, the
currently selected station remains
tuned.
Tuning a station within the selected
category
The channels identified for the
currently selected category are
arranged numerically. Only one entry is
visible at a time.
PressGorHbutton briefly.
The next station within the category
is started.
or
Press and hold
GorHbutton for approx.
three seconds until desired station
has been reached.Tuning via scan search
Scan search is characterized as follows:
Scan search plays a channel for
approx. eight seconds and then skips
to the next channel within the current
category.
Scan search can be terminated
manually.
Press
SC soft key.
The search starts.
SC appears in the
display.
Press
SC soft key again.
The search stops.
Page 232 of 464

232 Controls in detailPower windowsOpening and closing the windows
The windows are opened and closed eletri-
cally. Switches for operating the driver and
passenger door windows are located on
the driver's door. A switch for operating
the passenger door window is located on
the passenger door.
The door windows can also be operated us-
ing the retractable hardtop switch
(page 234). The rear side windows can
only be operated using the retractable
hardtop switch (
page 234) or the
SmartKey* (
page 235).
1Left window
2Right window
Warning!
G
When closing the windows, make sure there
is no danger of anyone being harmed by the
closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or,
if the switch was pressed past the resis-
tance point and released, by pressing the re-
spective switch.
The door windows are equipped with the ex-
press-close and automatic reversal func-
tion. If a door window encounters an
obstruction that blocks its path in a circum-
stance where you pressed the switch past
the resistance point and released it to close
the window, the automatic reversal function
will stop the window and open it slightly.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing the window by pressing and
holding the switch, by pressing and holding
button‹ on the SmartKey*, by pushing
and holding the retractable hardtop switch,
or by pressing and holding the
,
button
on the climate control panel or automatic
climate control panel*, the automatic rever-
sal function will not operate.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment can cause an
accident and/or serious personal injury.
Page 358 of 464

358 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
Ï
Coolant
Stop, engine off
The coolant is too hot.
Stop the vehicle and turn off the engine.
Only start the engine again after the mes-
sage disappears. You could otherwise dam-
age the engine.
/
Coolant
Check level
The coolant level is too low.
Add coolant (
page 293).
If you have to add coolant frequently, have
the cooling system checked by an autho-
rized Mercedes-Benz Center.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the hood. Stay away from the engine if you
see or hear steam coming from it. Turn off
the engine, get out of the vehicle and do not
stand near the vehicle until the engine has
cooled down.
The engine should not be operated with the
coolant temperature above 248°F (120°C).
Doing so may cause serious engine damage
which is not covered by the Mercedes-Benz
Limited Warranty.Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
!Do not ignore the low engine coolant
level warning. Extended driving with
this message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat, causing major en-
gine damage.
Page 366 of 464

366 Practical hintsWhat to do if ….
Rear left side marker
lamp malfunction
The left rear side marker lamp is
malfunctioning. This message will
only appear if a critical number of
LEDs have stopped working.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Rear right side marker
lamp malfunction
The right rear side marker lamp is
malfunctioning. This message will
only appear if a critical number of
LEDs have stopped working.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Tail light, left
Back-up lamp on
The left tail lamp is malfunctioning.
This message will only appear if a
critical number of LEDs have
stopped working. A backup bulb
has been brought into use.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Tail light, right
Back-up lamp on
The right tail lamp is malfunction-
ing. This message will only appear if
a critical number of LEDs have
stopped working. A backup bulb
has been brought into use.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Turn off
lights
You have forgotten to switch off the
headlamps when exiting the vehicle
and no SmartKey is in the starter
switch.
Switch off the headlamps.
Display symbol
Display message
Possible cause
Possible solution
Page 374 of 464
374 Practical hintsUnlocking/locking in an emergencyUnlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door and
the trunk using the mechanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 direction of arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
1Unlocking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key counterclock-
wise to position1.
The driver’s door is unlocked.
iUnlocking the driver’s door and/or the
trunk with the mechanical key will
trigger the anti-theft alarm system.
To cancel the alarm, do one of the
following:
Press buttonŒor‹on the
SmartKey.
Insert the SmartKey in the starter
switch.
Page 394 of 464

394 Practical hintsFlat tire
PressI on electric air pump switch2.
The electric air pump switches on and
inflates the collapsible tire.
Inflate the collapsible tire to approxi-
mately 51 psi (3.5 bar).
This takes about five minutes for the
collapsible tire. Air hose4 and union
nut5 can become hot during infla-
tion. Exercise proper caution to avoid
burning yourself when using the equip-
ment.
Press0 on electric air pump switch2.
Turn the SmartKey in the starter switch
to position0.
The electric air pump should now be
switched off.
If the tire inflation pressure is above
51 psi (3.5 bar), release excess tire in-
flation pressure using the vent screw
on air hose4.
Detach the electric air pump.
Reinstall collapsible tire valve cap.
Store electrical plug3 and air
hose4 behind flap 1 and place the
electric air pump back in the trunk.
!Do not operate the electric air pump
longer than six minutes without inter-
ruption. Otherwise it may overheat.
You may operate the electric air pump
again after it has cooled off.
Warning!
G
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and / or unevenly,
adversely affect handling and fuel economy,
and are more likely to fail from being over-
heated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride
comfort, wear unevenly, increase stopping
distance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.
Page 403 of 464

403 Practical hints
Towing the vehicle
Installing towing eye bolt
The towing eye bolt is supplied with the ve-
hicle tool kit, located in the compartment
underneath the trunk floor (
page 369).
The towing eyes are located on the passen-
ger side in the front and rear bumper.
Take vehicle tool kit out of trunk
(page 369).1Cover in front bumper
2Cover in rear bumper
Press mark on corresponding cover1
or2 in direction of arrow for folding
down.
Lift cover off to reveal threaded hole for
towing eye bolt.
Do not remove cover completely.
Screw towing eye bolt in to its end stop
and tighten with lug wrench.
For removing towing eye bolt and rein-
stalling cover, follow the previously de-
scribed steps in reverse order.
iThe gear selector lever* will remain
locked in positionP (vehicles with au-
tomatic transmission*) and the Smart-
Key will not turn in the starter switch if
the battery is disconnected or dis-
charged. See notes on the battery
(page 396) or on jump starting
(page 399).
Vehicles with automatic transmission*:
For information on manual unlocking of
transmission selector lever, see
(page 376).
iWhen closing the cover, insert the
latches first and gently press on the
opposite side until the cover fully en-
gages.
Make sure the cover’s check strap
does not get caught when closing.