175 Controls in detail
Automatic transmission
Activating manual shift program
Press program mode selector
switch1 repeatedly until the
M for
MANUAL program mode appears in
the right multifunction display.
The transmission switches to the
MANUAL program mode. Automatic
shifting is switched off. The gear range
is not limited.
You can change the gears manually when
the gear selector lever is in positionD. You
can upshift or downshift through the gears
in succession.Upshifting
Briefly press the gear selector lever to
the right in theD+direction.
or
Briefly press button2 on the right
side of the steering wheel
(page 172).
The transmission shifts to the next
higher gear.
If, instead of the manual program mode
symbolM, the symbolp appears in the
right multifunction display (
page 163),
shift to the next higher gear. The fuel
supply will otherwise be interrupted to
prevent the engine from overrevving.
iThe MANUAL program mode will not
be stored. When the engine is turned
off with the MANUAL program mode
selected, the transmission will go to
the automatic program mode (CorS)
when the engine is restarted.
!In the MANUAL program mode, the
transmission will not upshift, even if
the engine has reached its overrevving
range. Shift up to the next gear before
the engine has reached its overrevving
range. Make absolutely certain that the
engine speed does not reach the red
marking on the tachometer
(page 24). Otherwise the engine
could be damaged which is not covered
by the Mercedes-Benz Limited
Warranty.
176 Controls in detailAutomatic transmissionDownshifting
Briefly press the gear selector lever to
the left in theD-direction.
or
Briefly press button1 on the left side
of the steering wheel (
page 172).
The transmission shifts to the next
lower gear.Kickdown
Using the kickdown when driving in the
MANUAL program mode is not possible.
Deactivating manual shift program
Press the program mode selector
switch (
page 174) repeatedly
until
Cor
S appears in the right
multifunction display.
or
Restart the engine.
The transmission will go to the
automatic program mode (C orS).
The MANUAL program mode is not
stored.Emergency operation
(Limp Home Mode)
If vehicle acceleration worsens or the
transmission no longer shifts, the trans-
mission is most likely operating in limp
home (emergency operation) mode. In this
mode only second gear and reverse gear
can be activated.
Stop the vehicle in a safe location.
Move gear selector lever toP.
Turn off the engine.
Wait at least 10 seconds before
restarting.
Restart the engine.
Move gear selector lever to positionD
(for second gear) orR.
Have the transmission checked at an
authorized Mercedes-Benz Center as
soon as possible.
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced
vehicle control. Your vehicle’s ABS will not
prevent this type of loss of control.iWhen you brake or stop, the transmis-
sion shifts down to a gear from which
you can easily accelerate or take off.
197 Controls in detail
Retractable hardtop
Pull up on the hardtop switch as indi-
cated by the arrow until the hardtop is
completely lowered into its trunk stor-
age compartment and the indicator
lamp in the hardtop switch goes out.
The multifunction display will briefly
show the message K
in operation
.Closing the retractable hardtop with
the switch
Before pressing the hardtop switch, you
must make sure
the parking brake is engaged
(page 51)
the luggage cover is closed
(page 196)
the trunk lid is closed
the ignition is switched on
Press the hardtop switch as indicated
by the arrow until the hardtop is com-
pletely closed and locked and the indi-
cator lamp in the hardtop switch goes
out.
The multifunction display will briefly
show the message
+
in operation
.
iBe sure that the roof is dry before you
open it. Otherwise water may enter the
trunk interior.
Warning!
G
If the retractable hardtop is not fully opened
or closed, a warning will sound after 15 sec-
onds, pressure in the hardtop’s hydraulic
system will drop and the hardtop will lower.
Be sure to keep the hardtop switch pulled or
pressed until the hardtop is fully opened or
closed. The hydraulic pump will then shut
off.
To prevent possible accidents, drive the ve-
hicle only with the hardtop either completely
closed and locked, or fully lowered into its
storage compartment.
198 Controls in detailRetractable hardtopLocking the retractable hardtop after
raising/lowering
If the retractable hardtop is not properly
locked, lock it as described below.Unlocked status noticed when stopped
Switch on the ignition.
To lock the hardtop in its fully closed
position, press hardtop switch forward.
or:
To lock the hardtop in its fully opened
position, pull up on the hardtop switch.Unlocked status noticed while driving
Stop the vehicle in a safe location or as
soon as it is safe to do so.
Leave the ignition switched on.
To lock the hardtop in its fully closed
position, press hardtop switch forward.
or:
To lock the hardtop in its fully opened
position, pull up on the hardtop switch.
Warning!
G
The hardtop is not fully closed and locked or
not fully opened and locked if:
the indicator lamp in the hardtop switch
remains lit
the message K
in operation
appears in the multifunction display and
the indicator lamp in the hardtop switch
does not go out
the indicator lamp in the hardtop switch
flashes and a warning sounds for
10 seconds and the message
K
Lock retractable roof
appears in the multifunction display
when starting to drive
Warning!
G
Stop the vehicle in a safe location or as soon
a s i t i s s a f e t o d o s o a n d l o c k t h e h a r d t o p b e -
fore continuing to drive. You could other-
wise endanger yourself and others.
199 Controls in detail
Retractable hardtop
Opening the retractable hardtop with
the SmartKey (Summer opening
feature)
Aim the transmitter eye at the door
handle.
The SmartKey must be in close proxim-
ity to the outside door handle.
Press and hold button Œ until the
retractable hardtop is completely
open.
The seat ventilation for the driver’s seat
switches on. The rear side windows
open.
Release button Œ to interrupt pro-
cedure.
Warning!
G
If the retractable hardtop does not com-
pletely open or close, the roof hydraulics will
lose pressure and the retractable hardtop is
lowered
after approximately 7 minutes when the
ignition is switched on
after approximately 15 seconds when
the ignition is switched off
Shortly before the hardtop is lowered, a
warning will sound and the hardtop switch
lamp will flash. In the speedometer display
you will see K, in the tachometer display
you will see the message
being lowered
.
Properly lock the retractable hardtop
(page 198) before continuing to drive.
Warning!
G
Before operating the retractable hardtop,
make sure there is no danger of anyone
being injured by the moving parts (retract-
able roof, roof frame, and trunk lid) due to in-
attention.
Hands must never be placed near the roof
frame, upper windshield area, hardtop, shelf
behind roll bars, or trunk lid while the re-
tractable hardtop is being raised or lowered.
Serious personal injury may occur.
If potential danger exists, release the re-
spective button on the SmartKey. This im-
mediately interrupts the raising or lowering
procedure. You then can operate Œ or
‹ to raise or lower the hardtop away
from the danger zone.
200 Controls in detailRetractable hardtopClosing the retractable hardtop with
the SmartKey (Convenience feature)
Aim the transmitter eye at the door
handle.
The SmartKey must be in close proxim-
ity to the outside door handle.
Press and hold button ‹ until the
retractable hardtop is completely
closed.
The retractable hardtop and the side
windows close. In the tachometer dis-
play you will see the message Retractable roof Closed
.Problems when operating the
retractable hardtop
Indicator lamp in the retractable hard-
top switch is flashing
Several conditions may cause the indicator
lamp in the hardtop switch to flash when
activated:
The luggage cover in the trunk is not
closed.
Close the luggage cover in the
trunk.
The trunk lid is open.
Close the trunk lid.
The battery voltage is too low.
Start engine and let run while acti-
vating switch.
Warning!
G
If the retractable hardtop does not com-
pletely open or close, a warning sounds and
the retractable hardtop switch flashes. In
the speedometer display you will see K,
in the tachometer display you will see the
message
being lowered
. After about
15 seconds the roof hydraulics lose pres-
sure.
Properly lock the retractable hardtop
(
page 198) before continuing to drive.
205 Controls in detail
Driving systems
1Set current or higher speed
2Set current or lower speed
3Cancel cruise control
4Resume at last set speedSetting current speed
Accelerate or decelerate to the desired
speed.
Briefly lift1 or depress2 the cruise
control lever.
The current speed is set.
Remove your foot from the accelerator
pedal.
The cruise control is activated.
The selected speed appears in the multi-
function display.Canceling cruise control
There are several ways to cancel the cruise
control:
Step on the brake pedal.
The cruise control is canceled. The last
speed set is stored for later use.
or
Briefly push the cruise control lever in
direction of arrow3.
The cruise control is canceled. The last
speed set is stored for later use.
Warning!
G
Cruise control brakes automatically so that
the set speed is not exceeded.
Keep in mind that cruise control is a conve-
nience system designed to assist the driver
during vehicle operation. The driver is and
must remain at all times responsible for the
vehicle speed and for safe brake operation.
iOn uphill or downhill grades, the cruise
control may not be able to maintain the
set speed. Once the grade eases, the
set speed will be resumed.
On downhill grades, the cruise control
maintains the set speed with active
braking action. In addition, on longer
downhill grades, the automatic trans-
mission will automatically downshift.
206 Controls in detailDriving systems
Setting a higher speed
Lift the cruise control in direction of
arrow1 (
page 205) and hold it
there until the desired speed is
reached.
Release the cruise control lever.
The new speed is set.
Setting a lower speed
Depress the cruise control in direction
of arrow2 (
page 205) and hold it
there until the desired speed is
reached.
Release the cruise control lever.
The new speed is set.
iThe cruise control switches off auto-
matically if
you step on the brake pedal
you depress the parking brake
pedal
The cruise control also switches off au-
tomatically when
the vehicle speed is below
20 mph (30 km/h) (
page 204)
the ESP
® is in operation or switched
off with the ESP
® switch
(
page 86)
you move the gear selector lever to
positionN while driving
An acoustic warning sounds and the
message
CC Off
appears in the multi-
function display for approximately
5 seconds.
iDepressing the accelerator pedal does
not deactivate the cruise control. After
brief acceleration (e.g. for passing), the
cruise control will resume the last
speed set.iThe last stored speed is canceled when
you turn off the engine.!Moving the gear selector lever to
positionN while driving also cancels
cruise control. However, the gear se-
lector lever should not be moved to
positionN while driving except to coast
when the vehicle is in danger of skid-
ding (e.g. on icy roads).
iWhen you use the cruise control lever
to decelerate, the brake system will au-
tomatically brake the vehicle if the en-
gine’s braking power does not brake
the vehicle sufficiently.