Shaft MERCEDES-BENZ C320 2004 W203 Owner's Manual

329 Practical hints
Towing the vehicle
!
To be certain to avoid a possibility of
damage to the drive train, however, we
recommend the drive shaft be discon-
nected at the rear axle drive flange
(vehicles with 4MATIC: disconnected at
the front and rear axle drive flanges) for
any towing beyond a short tow to a
nearby garage.
Warning!
G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:

the engine will not run


there is a malfunction in the power
supply or in the vehicle’s electrical
system
as that will be necessary to adequately
control the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make certain that the SmartKey
is in starter switch position2.
If the SmartKey is left in starter switch
position0 for an extended period of time, it
can no longer be turned in the switch. In this
case, the steering is locked. To unlock,
remove SmartKey from starter switch and
reinsert.
iTo signal turns while being towed with
the hazard warning flasher in use, turn
SmartKey in starter switch to
position2 and activate the combina-
tion switch for the left or right turn
signal in the usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the
hazard warning flasher will operate
again.

339 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
C230KompressorSport
1Power steering pump
2Idler pulley
3Supercharger
4Automatic belt tensioner
5Air conditioning compressor
6Crankshaft
7Coolant pump
8Generator (alternator)
C 240/C 320 (all models)
1Automatic belt tensioner
2Power steering pump
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley
C32AMG
1Idler pulley
2Idler pulley
3Supercharger
4Automatic belt tensioner
5Power steering pump
6Air conditioning compressor
7Crankshaft
8Coolant pump
9Generator (alternator)

364 Technical termsPower train
Collective term designating all
components used to generate and
transmit motive power to the drive
axles, including


engine


clutch/torque converter


transmission


transfer case


drive shaft


differential


axle shafts/axles
Program mode selector switch
Used to switch the automatic trans-
mission between standard operationS
and comfort operationC.Remote Vehicle Diagnostics
Transmission of vehicle data and
current location to the Mercedes-Benz
Customer Assistance Center for
subscribers to Tele Aid service.
REST
(Residual engine heat utilization)
Feature that uses the engine heat
stored in the coolant to heat the
vehicle interior for a short time after
the engine has been turned off.
Restraint systems
Seat belts, belt tensioners, airbags and
child restraint systems. As inde-
pendent systems, their protective
functions complement one another.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired deto-
nation (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission gear
selector lever from being moved out of
positionP without SmartKey turned
and brake pedal depressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning
device and airbags. Though indepen-
dent systems, they are closely inter-
faced to provide effective occupant
protection.