transmission MERCEDES-BENZ C55AMG 2006 W203 User Guide

157 Controls in detail
Automatic transmission
Gear selector lever position
Effect
ìPark position
Gear selector lever position
when the vehicle is parked. Place
gear selector lever in positionP
only when vehicle is stopped.
The park position is not intended
to serve as a brake when the
vehicle is parked. Rather, the
driver should always set the
parking brake in addition to
placing the gear selector lever in
positionP to secure the vehicle.
Effect
The SmartKey can only be
removed from the starter switch
with the gear selector lever in
positionP. With the SmartKey
removed, the gear selector lever
is locked in positionP.
If the vehicle’s electrical system
is malfunctioning, the gear
selector lever could remain
locked in positionP
(
page 388).
íReverse gear
Place gear selector lever in
positionR only when vehicle is
stopped.
Effect
ëNeutral
No power is transmitted from the
engine to the drive axle. When
the brakes are released, the
vehicle can be moved freely
(pushed or towed).
To avoid damage to the trans-
mission, never engageN while
driving.
If the ESP
® is deactivated or
malfunctioning:
Move gear selector lever toN
only if the vehicle is in danger of
skidding, e.g. on icy roads.
êDrive
The transmission shifts
automatically. All five forward
gears are available.

158 Controls in detail
Automatic transmission
Driving tips
Accelerator position
Your driving style influences the
transmission’s shifting behavior:
Less throttle Earlier upshifting
More throttle Later upshifting
Kickdown
Use kickdown when you want maximum
acceleration.
Press the accelerator past the point of
resistance.
The transmission shifts into a lower
gear.
Ease on the accelerator when you have
reached the desired speed.
The transmission shifts up again.
!
Coasting the vehicle, or driving for any
other reason with gear selector lever
inN can result in transmission damage
that is not covered by the
Mercedes-Benz Limited Warranty.
Warning!G
Getting out of your vehicle with the gear
selector lever not fully engaged in positionP
is dangerous. Also, positionP alone is not
intended to or capable of preventing your
vehicle from moving, possibly hitting people
or objects.
Always set the parking brake in addition to
shifting to positionP (
page 54).
When parked on an incline, turn the front
wheels towards the road curb.
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system, as these materials could be
ignited and cause a vehicle fire.
Warning!G
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. Children
could move the gear selector lever from
positionP, which could result in an accident
and/or serious personal injury.

159 Controls in detail
Automatic transmission
Stopping
When you stop briefly, e.g. at traffic lights:
Leave the transmission in gear.
Hold the vehicle with the brake.
When you stop longer with the engine
idling and/or on an hill:
Set the parking brake.
Move the gear selector lever to
positionP.Maneuvering
When you maneuver in tight areas,
e.g. when pulling into a parking space:
Control the vehicle speed by gradually
releasing the brakes.
Accelerate gently.
Never abruptly step on the accelerator.Working on the vehicle
Warning!G
When working on the vehicle, set the
parking brake and move gear selector lever
to positionP. Otherwise the vehicle could
roll away.

160 Controls in detail
Automatic transmission
Gear ranges
With the gear selector lever in positionD
and driving in the automatic shift
programC orS (
page 161), you can
select a gear range for the automatic
transmission to operate within:
Gear selector lever (
page 162):
You can limit the gear range by pressing
the gear selector lever to the left (D-), and
reverse the gear range limit by pressing
the gear selector lever to the right (D+).
Steering wheel gearshift control
(
page 163):
You can limit the gear range by pressing
the respective downshift button on the
steering wheel gearshift control, and
reverse the gear range limit by pressing
the respective upshift button on the
steering wheel gearshift control.The selected gear range appears in the
multifunction display (
page 156). If you
press on the accelerator when the engine
has reached its rpm limit, the transmission
will upshift beyond any gear range limit
selected.
Effect
éThe transmission shifts through
fourth gear only.
èThe transmission shifts through
third gear only.
With this selection you can use
the braking effect of the engine.
Effect
çThe transmission shifts through
second gear only.
Allows the use of engine’s
braking power when driving:

on steep downgrades

in mountainous regions

under extreme operating
conditions
æThe transmission operates in
first gear only.
For maximum use of engine’s
braking effect on very steep or
lengthy downgrades.

161 Controls in detail
Automatic transmission
Automatic shift program
The program mode selector switch is
located on the lower part of the center
console.
1Program mode selector switch
M Manual For manual gear shifting,
see “Manual shift pro-
gram” (
page 165)
C Comfort For comfort driving
S Sport For standard drivingThe current gear selector lever position
and the selected program mode (
C/S) are
indicated in the multifunction display
(
page 156).
Press program mode selector
switch1 repeatedly until the letter of
the desired program mode appears in
the multifunction display.
SelectCfor comfort driving:

The vehicle starts out in second
gear (both forward and reverse) for
gentler starts. This does not apply if
full throttle is applied or gear
range1 is selected.

Traction and driving stability are
improved on icy roads.

Upshifts occur earlier even when
you give more gas. The engine then
operates at lower rpms and the
wheels are less likely to spin.
!
Never change the program mode when
the gear selector lever is out of
positionP. This could result in a
change of driving characteristics for
which you may not be prepared.
i
The last selected program
mode (CorS) is switched on when the
engine is restarted.

162 Controls in detail
Automatic transmission
Gear selector lever one-touch
gearshifting
Even with an automatic transmission, you
can change the gears manually and limit or
extend the gear range for automatic shift-
ing with the gear selector lever in
positionD and driving in the automatic
program modeC orS.Downshifting
Briefly press the gear selector lever to
the left in theD-direction.
The transmission will shift from the current
g e a r t o t h e n e x t l o w e r g e a r a s p e r m i t t e d b y
the shift program. This action simulta-
neously limits the gear range of the
transmission (
page 160).Upshifting
Briefly press the gear selector lever to
the right in theD+direction.
The transmission will shift from the current
gear to the next higher gear as permitted
by the shift program. This action simul-
taneously extends the gear range of the
transmission.
Canceling gear range limit
Press and hold the gear selector lever
in theD+direction until
D reappears in
the multifunction display.
The transmission will shift from the current
gear range directly to gear rangeD.
Shifting into optimal gear range
Press and hold the gear selector lever
in theD-direction.
The transmission will automatically select
the gear range suited for optimal
acceleration and deceleration. This may
involve shifting down one or more gears.
!
Allow engine to warm up under low
load use. Do not place full load on the
engine until the operating temperature
has been reached.
Shift into reverse gearR or parking
positionP only when the vehicle is
stopped.
Avoid spinning of a drive wheel for an
extended period when driving off on
slippery road surfaces. This may cause
serious damage to the drivetrain which
is not covered by the Mercedes-Benz
Limited Warranty.
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.
i
To avoid overrevving the engine when
the gear selector lever is moved to
theD-direction, the transmission will
not shift to a lower gear if the engine’s
max. speed would be exceeded.

163 Controls in detail
Automatic transmission
Steering wheel gearshift control
one-touch gearshifting
The steering wheel gearshift control pro-
vides an alternative method for changing
the gears manually and limiting or extend-
ing the gear range for automatic shifting
with the gear selector lever in positionD
and driving in the automatic program
modeC orS.The steering wheel gearshift buttons are
located to the left and right of the steering
wheel.
1Left button: downshift
2Right button: upshift
i
For information on using the steering
wheel gearshift control in manual pro-
gram modeM, see “Manual shift pro-
gram” (
page 165).
i
To avoid overrevving the engine when
downshifting with steering wheel
gearshift buttons, the transmission will
not shift to a lower gear if the engine’s
max. speed would be exceeded.
!
Allow engine to warm up under low
load use. Do not place full load on the
engine until the operating temperature
has been reached.
Shift into reverse gearR or parking
positionP only when the vehicle is
stopped.
Avoid spinning of a drive wheel for an
extended period when driving off on
slippery road surfaces. This may cause
serious damage to the drivetrain which
is not covered by the Mercedes-Benz
Limited Warranty.
i
You cannot shift with the steering
wheel gearshift buttons when the gear
selector lever is in positionP,N orR.
The last selected program
mode (CorS) is switched on when the
engine is restarted in the automatic
program mode.

164 Controls in detail
Automatic transmission
The following instructions describe opera-
tion of the steering wheel gearshift control
when driving in the automatic program
modeC orS.
For instructions on operating the steering
wheel gearshift control and gear selector
lever in the manual program modeM, see
“Manual shift program” (
page 165).Downshifting
Briefly press button1 on the left side
of the steering wheel.
The transmission will shift to the next
lower gear as permitted by the shift
program. This action simultaneously limits
the gear range of the transmission
(
page 160) when you are driving in the
automatic program mode (CorS).
Upshifting
Briefly press button2 on the right
side of the steering wheel.The transmission will shift to the next
higher gear as permitted by the shift
program. This action simultaneously
extends the gear range of the transmission
when you are driving in the automatic
program mode (CorS).
Canceling gear range limit
Press and hold button 2 on the right
side of the steering wheel until
D
reappears in the multifunction display.
The transmission will shift from the current
gear range directly to gear rangeD.
Shifting into optimal gear range
Press and hold button 1 on the left
side of the steering wheel.
The transmission will automatically select
the gear range suited for optimal
acceleration and deceleration. This may
involve shifting down one or more gears.
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.

165 Controls in detail
Automatic transmission
Manual shift program
In addition to the automatic shift
programC orS, your vehicle is equipped
with the manual shift programM.
In the manual program modeM,
system-controlled automatic gearshifting
is switched off and you need to change the
gears by manually upshifting or downshift-
ing using the steering wheel gearshift but-
tons to the left and right of the steering
wheel (
page 163) or the gear selector
lever.The program mode selector switch is
located on the lower part of the center
console.
1Program mode selector switch
M Manual For manual gear shifting
C Comfort For comfort driving
S Sport For standard driving
!
Allow engine to warm up under low
load use. Do not place full load on the
engine until the operating temperature
has been reached.
Shift into reverse gearR or parking
positionP only when the vehicle is
stopped.
Avoid spinning of a drive wheel for an
extended period when driving off on
slippery road surfaces. This may cause
serious damage to the drivetrain which
is not covered by the Mercedes-Benz
Limited Warranty.

166 Controls in detail
Automatic transmission
The current gear selector lever position
and the selected program mode (
M/C/S)
are indicated in the multifunction display
(
page 156).Activating manual shift program
Press program mode selector
switch1 repeatedly until the
M for the
manual program modeM appears in
the multifunction display.
The transmission switches to the
manual program modeM. 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
i
For information on automatic program
modesC orS, see “Automatic shift
program” (
page 161), “Gear selector
lever one-touch gearshifting”
(
page 162), and “Steering wheel
gearshift control one-touch gearshift-
ing” (
page 163).
i
The manual program modeM will not
be stored. When the engine is turned
off with the manual program modeM
selected, the transmission will go to
the automatic program mode (CorS)
when the engine is restarted.
!
In the manual program modeM, 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.