238 OperationThe first 1 000 miles (1 500 km)
In the “Operation” section you will find 
detailed information on operating, main-
taining and caring for your vehicle.
The first 1 000 miles (1 500 km)
The more cautiously you treat your vehicle 
during the break-in period, the more satis-
fied you will be with its performance later 
on.
Drive your vehicle during the first 
1 000 miles (1 500 km) at varying but 
moderate vehicle and engine speeds.
During this period, avoid heavy loads 
(full throttle driving) and excessive 
engine speeds (no more than
2/3 of 
maximum rpm in each gear).
Shift gears in a timely manner.
Avoid accelerating by kick-down.
Do not attempt to slow the vehicle 
down by shifting to a lower gear using 
the gear selector lever.
Select positions3,2 or1 only when 
driving at moderate speeds (for hill 
driving). 
After 1 000 miles (1 500 km) you may 
gradually increase vehicle and engine 
speeds to the permissible maximum.All of the above instructions, as may apply 
to your vehicle type, also apply when 
driving the first 1 000 miles (1 500 km) 
after the engine or the rear differential has 
been replaced
!Additional instructions for AMG 
vehicles:
During the first 1 000 miles 
(1 500 km), do not exceed a speed 
of 85 mph (140 km/h).
During this period, avoid engine 
speeds above 4 500 rpm in each 
gear.
iAlways obey applicable speed limits. 
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.