Page 85 of 344
85 Safety and Security
Anti-theft systems
Arming tow-away alarm and glass
breakage sensor
When you lock your vehicle, the tow-away
and glass breakage sensor alarm is auto-
matically armed.
Disarming tow-away alarm and glass
breakage sensor
To prevent triggering the tow-away alarm
feature, switch off the tow-away alarm and
glass breakage sensor before towing the
vehicle, or when parking on a surface sub-
ject to movement, such as a ferry or auto
train.Vehicles with trip computer*
The buttons are located in the overhead
control panel.
1Reset button
2Mode button
3Display
4Glass breakage sensor
Turn key in steering lock to position2
(page 33).
Return key to position0 and remove it
from the steering lock.
Within 30 seconds press button1
or2.
The display shows
OFF
.
Exit vehicle and lock vehicle with
remote control (
page 32).
The tow-away alarm and glass breakage
sensor remain switched off until the key is
inserted in steering lock and turned to
position1.
Page 93 of 344

93 Controls in detail
Locking and unlocking
Automatic central locking
The doors and the liftgate automatically
lock when the ignition is switched on and
the left front wheel turns at vehicle speeds
of approximately 9mph (15km/h) or
more.
If one of the front doors is then opened
from the inside, the vehicle is unlocked
centrally unless only the driver's door was
previously unlocked.Information on towing the vehicle can be
found in the “Practical hints” section
(
page 241).
The switch is located on the lower center
console.
Central locking switch1Locking
2UnlockingActivating
Make sure the ignition is switched on.
All the lamps in the instrument cluster
light up.
Press and hold upper part1 of the
central locking button for approximate-
ly six seconds.
The automatic central locking is
activated.
Deactivating
Make sure the ignition is switched on.
All the lamps in the instrument cluster
light up.
Press and hold lower part2 of the
central locking button for approximate-
ly six seconds.
The automatic central locking is deacti-
vated.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking when the vehicle
is pushed or towed
is on a test stand
Page 102 of 344

102 Controls in detailSeatsResetting rear seat
Pull down on seat bench until it locks
into place.
Pull lock button1 (
page 100) up
and unfold backrest until it locks into
place.
Check for secure locking by pulling and
pushing on the backrest.
The red backrest lock indicator at lock
button1 (
page 100) is not visible in
the locked position.
Move the rear and front seats in de-
sired position.
Pull up and adjust head restraint
(page 36).
Third row seats*Folding down single seat
1Head restraint
2Hook
3Tensioner
4Hook and loop velcro strip
Remove cargo floor plate
(page 162).
Remove head restraint1 from seat
cushion.
Lift tensioner3 upward to a horizon-
tal position to release tension of the
belt.
Disengage hook2 while holding onto
the seat firmly with one hand.
Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that head restraint
supports the back of the head at eye level.
This will reduce the potential for injury to the
head and neck in the event of an accident or
similar situation.
Failure to assure that seats are locked into
place could result in an increased chance of
injury in an accident.
Never place hands under seat or near any
moving parts while a seat is being adjusted.
Page 118 of 344

118 Controls in detailInstrument clusterResetting trip odometer
Press the left knob1 (
page 116) re-
peatedly until you see the trip odome-
ter display.
Press and hold the left knob1 until
the trip odometer is reset.
Tachometer
To help protect the engine, the fuel supply
is interrupted if the engine is operated
above its specified limit.
Outside temperature indicator
The outside temperature is displayed in
the instrument cluster (
page 24).
When moving the vehicle into colder ambi-
ent temperatures (e.g. when leaving your
garage), you will notice a delay before the
lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate tem-
perature indications caused by heat
radiated from the engine during idling or
slow driving.
Setting the clock
Hour
Pull out the right knob2 in the instru-
ment cluster (
page 116) and turn it
counterclockwise.
Minutes
Pull out the right knob2 in the instru-
ment cluster (
page 116) and turn it
clockwise.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
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.
iTo set the clock by a single hour or a
few minutes, turn knob2 just a few
degrees in the direction indicated for
hours or minutes.
Page 150 of 344

150 Controls in detailDriving systems
Driving systemsThe driving systems of your vehicle are de-
scribed on the following pages:
Cruise control, with which the vehicle
can maintain a preset speed.
Parktronic*, with which you can assist
your parking maneuvers.
The driving systems BAS, ABS, ESP, EBB
and 4-ETS, are described in the “Safety
and Security” section (
page 76).
Cruise control
Cruise control automatically maintains the
speed you set for your vehicle.
Use of cruise control is recommended for
driving at a constant speed for extended
periods of time. You can set or resume
cruise control at any speed over 20 mph
(30 km / h).
The cruise control function is operated by
means of the cruise control lever.
The cruise control lever is the uppermost
lever found on the left-hand side of the
steering column (
page 23).
Warning!
G
Cruise control is a convenience system de-
signed to assist the driver during vehicle op-
eration. The driver is and must remain
responsible for the vehicle speed and for
safe brake operation.
Only use cruise control if the road, traffic
and weather conditions make it advisable to
travel at a steady speed.
The use of cruise control can be danger-
ous on winding roads or in heavy traffic
because conditions do not allow safe
driving at a steady speed.
The use of cruise control can be danger-
ous on slippery roads. Rapid changes in
tire traction can result in wheel spin and
loss of control.
Deactivate cruise control when driving
in fog.
The “Resume” function should only be oper-
ated if the driver is fully aware of the previ-
ously set speed and wishes to resume this
particular preset speed.
Page 152 of 344

152 Controls in detailDriving systemsSetting a higher speed
Lift the cruise control lever to
position1 and hold it up until the de-
sired speed is reached.
Release the cruise control lever.
The new speed is set.
Setting a lower speed
Depress the cruise control lever to
position2 and hold it down until the
desired speed is reached.
Release the cruise control lever.
The new speed is set.Fine adjustment in 1 mph (Canada:
1 km / h) increments
Faster
Briefly tip the cruise control lever in the
direction of arrow1.
Slower
Briefly tip the cruise control lever in the
direction of arrow2.Setting to last stored speed (“Resume”
function)
Briefly push the cruise control lever to
position4.
Cruise control will resume the last set
speed.
Remove your foot from the accelerator
pedal.
Transmission in LOW RANGE mode
iDepressing the accelerator pedal does
not deactivate the cruise control. After
brief acceleration (e.g. for passing),
cruise control will resume the last
speed set.
iWhen you use the cruise control lever
to decelerate, the transmission will au-
tomatically downshift if the engine’s
braking power does not brake the vehi-
cle sufficiently.
Warning!
G
The speed stored in memory should only be
set again if prevailing road conditions per-
mit. Possible acceleration or deceleration
differences arising from returning to preset
speed could cause an accident and / or seri-
ous injury to you and others.iThe cruise control should not be used
during off-road driving.
Page 179 of 344

179 Controls in detail
Useful features
Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. key inside vehicle), and no
other key is available:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.
Then return to your vehicle and pull
outside handle of the liftgate for mini-
mum of 20 seconds until the SOS but-
ton is flashing.
The message
EMERGENCY CALL –
CALL CONNECTED appears in the MCS
display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your acquaintance call.
!If the indicator lamp continues to flash
or the system does not reset, contact
the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada), or
Mercedes-Benz Customer Assistance
at 1-800-FOR-MERCedes
(1-800-367-6372) in the USA or Cus-
tomer Service at 1-800-387-0100 in
Canada.iThe indicator lamp on the correspond-
ing button flashes until the call is con-
cluded. Calls can only be terminated by
a Response Center or Customer Assis-
tance Center representative, except
Roadside Assistance and Information
calls, which can also be terminated by
using the END button on the MCS unit.
iWhen a Tele Aid call has been initiated,
the MCS system audio is muted and
the selected mode (radio, tape or CD)
pauses. The optional cellular phone (if
installed) switches off. If you must use
this phone, the vehicle must be parked.
Disconnect the coiled cord and place
the call. The navigation system (if en-
gaged) will continue to run. A pop-up
window will appear in the MCS display
to indicate that a Tele Aid call is in
progress.
Page 186 of 344

186 Controls in detailUseful featuresTrip computer*
The trip computer is located in the
overhead console.
1RESET
2MODE
3Display
Switching on the trip computer
Switch on ignition.
Display3 shows one of the available
functions.
If a function display does not appear,
press MODE2.Selecting functions
Press MODE2 repeatedly until the
desired display appears.
The functions are displayed in the follow-
ing order:
Date
Compass
Stop watch
Present fuel consumption
Average fuel consumption
Distance remaining
Country
Switching off trip computerSetting the date
Press MODE2 repeatedly until the
date appears.
Press RESET1.
The month shown flashes.
Press MODE2 to advance to selected
month.
Press RESET1.
The day shown flashes.
Press MODE2 to advance to selected
day.
Press RESET1.
The year shown flashes.
Press MODE2 to advance to selected
year.
Press RESET1.
The display stops flashing and the date
is set.
iWith engine not running, the display
switches off automatically 30 seconds
after the last entry.