
Problems with the transmission
Problem
Possible causes/consequences and
M
MSolutions The transmission has
problems shifting gear. The transmission is losing oil.
X Have the transmission checked at a qualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked immediately at a qualified spe-
cialist workshop, e.g. a Mercedes-Benz Service Centre. Releasing the parking lock manually
! Do not use any sharp-edged objects to
remove the selector lever gaiter from the
centre console. This could damage the
selector lever gaiter. X
Engage the electric parking brake.
X Press the frame of selector level gaiter :
together somewhat on the side edge at the back and hold with one hand ;.
X With the other hand, prise out the frame of
selector level gaiter :with a flat, blunt
object (e.g. a screwdriver wrapped in cloth) at rear edge
=, pulling it up and out at the
same time.
X Press release button ?down and simul-
taneously move the selector lever out of
position P.
The selector lever can now be moved freely until it is returned to position P.
In the event of an electrical fault, it is possible
to release the selector lever lock manually to
move it out of position P. This occurs if the
vehicle is towed away, for example. Refuelling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, naked flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refuelling. 158
RefuellingDriving and parking

Driving on flooded roads
!
Bear in mind that vehicles travelling in
front or in the opposite direction create
waves. This may cause the maximum per-
missible water depth to be exceeded.
These notes must be observed under all
circumstances. You could otherwise dam-
age the engine, the electronics or the trans- mission.
If you must drive on stretches of road on
which water has collected, please bear in
mind that:
R the maximum permissible fording depth in
still water is 12 cm
R you should drive no faster than walking
pace Winter driving
G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified specialist workshop at the onset of winter. You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres. Do
not use cruise control.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Vehicles with manual transmission:
shift to neutral.
X Vehicles with automatic transmission:
shift the transmission to position N.
X Try to bring the vehicle under control by
using corrective steering.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges. The
vehicle could skid if you fail to adapt your
driving style. Always adapt your driving style
and drive at a speed to suit the prevailing
weather conditions.
You should pay special attention to road con- ditions when temperatures are around the
freezing point.
Further information on driving with snow
chains, see (Y page 317).
For more information on driving with summer tyres, see (Y page 316).
Observe the notes in the "Winter operation"
section (Y page 316). Driving systems
Cruise control
General notes Cruise control maintains a constant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select a lower gear 168
Driving syste
msDriving and parking

R
Off map
Off map orOff road
Off road : the vehicle position
is outside the area of the digital map (off-
map position)
R No route
No route : no route could be calculated to
the selected destination Audio menu
Selecting a radio station Example: radio station (colour display)
:
Waveband
; Channel frequency with memory position
i Station
;is displayed with the station
frequency or station name. The memory
position is only displayed along with sta-
tion ;if this has been stored.
X Switch on the audio system or COMAND
Online and select Radio; see the separate
operating instructions.
X Press the =or; button on the steer-
ing wheel to select the Audio Audiomenu.
X To select a stored station: briefly press
the 9 or: button.
X To select a station from the station list:
press and hold the 9or: button.
If no station list is received: X To select a station using the station
search: press and hold the 9or:
button.
i For information on changing waveband
and storing stations, see the separate oper-
ating instructions.
i DAB radio mode (Digital
AudioBroadcast-
ing); see the separate operating instruc-
tions. Audio player or audio media operation
Example: CD/DVD changer display (colour multi-
function display)
Audio files from various audio players or
media can be played, depending on the equip-
ment fitted in the vehicle.
X Switch on the audio system or COMAND
Online and select audio CD or MP3 mode,
see the separate operating instructions.
X Press the =or; button on the steer-
ing wheel to select the Audio
Audio menu.
X To select the next/previous track:
briefly press the 9or: button.
X To select a track from the track list
(rapid scrolling): press and hold the 9
or : button until desired track :has
been reached.
If you press and hold the 9or:
button, the rapid scrolling speed is
increased. Not all audio devices or media
support this function.
If track information is stored on the audio
player or medium, the multifunction display
will show the number and title of the track.
The current track does not appear in audio
AUX mode (Auxiliary audio mode: external
audio source connected).
Video DVD operation Example: CD/DVD changer display (colour multi-
function display) Menus and submenus
207On-board computer and displays Z

Service products include the following:
R fuels
R lubricants (e.g. engine oil, transmission oil)
R coolant
R brake fluid
R windscreen washer fluid
R climate control system refrigerant
When handling, storing and disposing of any
service products, please observe the relevant regulations.
Components and service products must be
matched. Mercedes-Benz recommends that
you use products tested and approved by
Mercedes-Benz. They are listed in this
Mercedes-Benz Owner's Manual in the appro-
priate section.
You can identify service products approved
by Mercedes-Benz by the following inscrip-
tions on the container:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51)
Other designations or recommendations indi- cate a level of quality or a specification in
accordance with an MB Sheet Number (e.g.
MB 229.51). They have not necessarily been
approved by Mercedes-Benz.
Further information can be obtained from any
Mercedes-Benz Service Centre or on the
Internet at http://bevo.mercedes-benz.com. Fuel
Important safety notes G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, naked flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refuelling. G
WARNING
Fuels are poisonous and hazardous to health. There is a danger of injury.
Do not swallow fuel or let it come into contact
with skin, eyes or clothing. Do not inhale fuel
vapours. Keep fuels out of the reach of chil-
dren.
If you or others come into contact with fuel,
observe the following:
R Wash the fuel off any affected areas of skin
with water and soap immediately.
R If you get fuel in your eyes, rinse them thor-
oughly with clean water immediately. Seek immediate medical attention.
R If fuel is swallowed, seek immediate medi-
cal attention. Do not induce vomiting.
R Change any clothing that has come into
contact with fuel immediately.
Tank capacity The total capacity of the fuel tank may vary,
depending on the vehicle equipment.
Model Total capa-
city SLK 250 CDI
60.0 l
AMG vehicles
70.0 l
All other models
60 l
or
70.0 l Model Of which
reserve fuel Models with 60.0 l total
capacity
Approx.
8.0 l Models with 70.0 l total
capacity
Approx.
9.0 l Service products and capacities
343Technical data Z