automatic transmission MERCEDES-BENZ C CLASS COUPE 2003 User Guide

133
Controls in detail
Automatic transmission*
One-touch gearshifting
Even with an automatic transmission you
can change the gears yourself when the
selector lever is in position
D.
Downshifting
Briefly press the selector lever to the
left in the D–direction.
The transmission will shift from the current
gear to the next lower gear. This action si-
multaneously limits the gear range of the
transmission (
page 134). Upshifting

Briefly press the selector lever to the
right in the
D+direction.
The transmission will shift from the current
gear to the next higher gear as permitted
by the shift program. This action simulta-
neously extends the gear range of the
transmission. Canceling gear range limit

Press and hold the selector lever in the
D+
direction until D reappears in the
tachometer display field.
The transmission will shift from the current
gear range directly to gear range D.
Shifting into optimal gear range

Press and hold the gear selector lever
in the D– direction.
The transmission will automatically select
the gear range suited for optimal accelera-
tion and deceleration. This will 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 vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.
iTo avoid overrevving the engine when
the selector lever is moved to the
D– direction, the transmission will not
shift to a lower gear if the engine’s
max. speed would be exceeded.

134 Controls in detailAutomatic transmission*Gear ranges
With the selector lever in positionD, you
can limit the transmission’s gear range by
pressing the lever to the left ( D-), and re-
verse the gear range limit by pressing the
lever to the right ( D+).
The selected gear range will appear in the
tachometer display field. If you press on
the accelerator when the engine has
reached its rpm limit, the transmission will
upshift beyond any gear range limit
selected.
Gear
range
Effect
é
The transmission shifts
through fourth gear only.
è
The transmission shifts
through third gear only.
With this selection you can
use the braking effect of the
engine.
Gear
range
Effect
ç
The 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
æ
The transmission operates
only in first gear
For maximum use of engine’s
braking effect on very steep
or lengthy downgrades.

135
Controls in detail
Automatic transmission*
Gear selector lever position
Effect
P
Park position

Selector position when the vehicle is
parked. Only place selector lever in
position P when vehicle is stopped.
The park position is not intended to
serve as a brake when the vehicle is
parked. Rather, the driver should al-
ways set the parking brake in addi-
tion to placing the selector lever in
position P to secure the vehicle.
The key can only be removed from
the starter switch with the selector
lever in position P. With the key re-
moved the selector lever is locked in
position P.
R
Reverse gear
Place selector lever in position R only
when vehicle is stopped.
Effect
N
Neutral
No power is transmitted from the en-
gine to the drive axle. When the
brakes are released, the vehicle can
be moved freely (pushed or towed).
To avoid damage to the transmission,
never engage N while driving.
If ESP is deactivated or malfunction-
ing:
Only move selector lever to N if the
vehicle is in danger of skidding (e.g.
on icy roads).
D
Drive
The transmission shifts automatical-
ly. All five forward gears are avail-
able.
!Coasting the vehicle, or driving for any
other reason with selector lever in N
can result in transmission damage that
is not covered by the Mercedes-Benz
Limited Warranty.Warning!
G
Getting out of your vehicle with the selector
lever not fully engaged in position P is dan-
gerous. Also, position P alone is not intend-
ed to or capable of preventing your vehicle
from moving, possibly hitting people or ob-
jects.
Always set the parking brake in addition to
shifting to position P (
page 51).
When parked on an incline, turn the front
wheels towards the road curb.

136 Controls in detailAutomatic transmission*
Program mode selector switch1 Program mode selector switch
S Standard For regular driving
W Winter For winter driving

Press the program mode selector
switch repeatedly until the letter of the
desired shift program appears in the
multifunction display (
page 105).
Select
Wfor winter 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
range 1 is selected.


Traction and driving stability are im-
proved 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.


The power transmission ratio for se-
lector lever position R changes de-
pending on the program mode
selected (
W or
S).
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Children could move the selector le-
ver from position P, which could result in an
accident and/or serious personal injury.
!Never change the program mode when
the selector lever is out of position P. It
could result in a change of driving char-
acteristics for which you may not be
prepared.

137
Controls in detail
Automatic transmission*
Accelerator position
Your driving style influences the transmis-
sion’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 accelera
tor when you have
reached the desired speed.
The transmission shifts up again. Emergency operation (Limp Home
Mode)
If vehicle acceleration worsens or the
transmission no longer shifts, the trans-
mission is most likely operating in limp
h o m e ( e m e r g e n c y o p e r a t i o n ) m o d e . I n t h i s
mode only 2nd gear and reverse gear can
be activated.
Stop the vehicle.

Move selector lever to
P.

Turn off the engine.

Wait at least ten seconds before re-
starting.

Restart the engine.

Move selector lever to position D (for
2nd gear) or R.

Have the transmission checked at an
authorized Mercedes-Benz Center as
soon as possible.

191
Controls in detail
Driving systems
Setting stored speed (“Resume”
function)
Briefly push the cruise control lever to
position
4.
The cruise control will resume the last
previously set speed.

Remove your foot from the accelerator
pedal. Setting a higher speed

Lift the cruise control lever to
position
1 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
position 2 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 arrow
1.
Slower

Briefly tip the cruise control lever in the
direction of arrow 2.
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.
iDepressing the accelerator pedal does
not deactivate cruise control. After
brief acceleration (e.g. for passing),
cruise control will resume the last
speed set.
iVehicles with automatic transmission:
When 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.

298 Practical hintsJump startingThe battery is located in the engine com-
partment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure that the two vehicles do not
touch.

Turn off the engine.
On both vehicles:

Turn off all electrical consumers.

Apply parking brake.

Shift selector lever to position P (man-
ual transmission to Neutral). 1
Positive terminal of charged battery
2 Positive under hood terminal in front of
discharged battery
3 Negative terminal of charged battery
4 Negative under hood terminal in front
of discharged battery

Connect positive terminal 1 of the
charged battery with under hood
terminal 2 in front of the discharged
battery with the jumper cables. Clamp
cable to charged battery 1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminal 3 of the
charged battery with under hood
terminal 4 in front of the discharged
battery with the jumper cables. Clamp
cable to charged battery 3 first.

Start the engine of the disabled vehi-
cle.
After the engine has started, you can again
turn on the electrical consumers. Do not
turn on the lights under any circumstanc-
es.

Remove the jumper cables first from
negative terminals 3 and 4 and then
from positive terminals 1 and 2.

Have the battery checked at the
nearest authorized Mercedes-Benz
Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 231).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.

299
Practical hints
Towing the vehicle
Towing the vehicle
Mercedes-Benz recommends that the vehi-
cle be transported with all wheels off the
ground using flatbed or appropriate wheel
lift/dolly equipment. This method is pref-
erable to other types of towing. When circumstances do not permit the
recommended towing methods, the vehi-
cle may be towed with all wheels on the
ground or front wheels raised only so far as
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!Use flatbed or wheel lift/dolly equip-
ment with key in starter switch turned
to position
0.
Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
To prevent damage during transport,
do not tie down vehicle by its chassis or
suspension parts.
Switch off the tow-away alarm
(page 79) and deactivate the auto-
matic central locking (
page 122).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.
!If the vehicle is towed with the front
axle raised, the engine must be shut off
(key in starter switch position 0 or 1).
Otherwise, the ESP will immediately be
engaged and will apply the rear wheel
brakes.
When towing the vehicle with all wheels
on the ground, the selector lever must
be in position N (manual transmission:
gears disengaged) and the key must be
in starter switch position 2.
When towing the vehicle with all wheels
on the ground or the front axle raised,
the vehicle may be towed only for dis-
tances up to 30 miles (50 km) and at a
speed not to exceed 30 mph
(50 km/h).

317
Technical data
Fuels, coolants, lubricants etc.
Fuels, coolants, lubricants etc.
Capacities Vehicle components and their respective
lubricants must match. Therefore use only
brands tested and recommended by us. Please refer to the Factory Approved Ser-
vice Products pamphlet, or inquire at your
Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants etc.
Engine with oil filter
C 230 Kompressor
C320
5.8 US qt (5.5 l)
7.9 US qt (7.5 l)
Recommended engine oils
Automatic transmission
8.5 US qt (8.0 l)
MB Automatic Transmission Oil
1
1MB part no. 001 989 21 03 10Manual transmission
1.3 US qt (1.2 l)
MB Manual Transmission Oil
2
2MB part no. 001 989 26 03 10Rear axle
1.2 US qt (1.1 l)
Hypoid gear oil SAE 85 W 90
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs
approx. 2.1 oz (60 g) each
High temperature roller bearing grease
Brake system
0.5 US qt (0.5 l)
MB Brake Fluid (DOT 4+)
Cooling system
C 230 Kompressor
C320
approx. 8.5 US qt (8.0 l)
approx. 10.5 US qt (10.0 l)
MB 325.0 Anticorrosion/Antifreeze Agent

328 Technical termsCollapsible tireAn especially compact spare tire that
must be inflated with a provided air
pump before using. It should only be
used to bring the vehicle to the nearest
service station.
COMAND* (C
ockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation system, as well as for other op-
tional equipment (CD changer,
telephone, etc.).
Control system The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings. Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.
Engine number The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP (E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability. ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRS
FSS (F
lexible S
ervice S
ystem)
Service indicator in the multifunction
display that informs the driver when
the next vehicle maintenance service is
due.
Gear range Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the selector lever.