Page 259 of 416

259 Operation
Driving instructions
Catalytic converter
Your Mercedes-Benz is equipped with 
monolithic type catalytic converters, an 
important element in conjunction with the 
oxygen sensors to achieve substantial con-
trol of the pollutants in the exhaust emis-
sions. Keep your vehicle in proper 
operating condition by following our rec-
ommended maintenance instructions as 
outlined in your Service Booklet.
Emission control
Certain systems of the engine serve to 
keep the toxic components of the exhaust 
gases within permissible limits required by 
law.
These systems, of course, will function 
properly only when maintained strictly ac-
cording to factory specifications. Any ad-
justments on the engine should, therefore, 
be carried out only by qualified 
Mercedes-Benz Center authorized techni-
cians. 
Engine adjustments should not be altered 
in any way. Moreover, the specified service 
jobs must be carried out regularly accord-
ing to Mercedes-Benz servicing require-
ments. For details refer to the Service 
Booklet.
!To prevent damage to the catalytic con-
verters, use only premium unleaded 
gasoline in this vehicle.
Any noticeable irregularities in engine 
operation should be repaired promptly. 
Otherwise, excessive unburned fuel 
may reach the catalytic converter, 
causing it to overheat and start a fire.
Warning!
G
As with any vehicle, do not idle, park or op-
erate this vehicle in areas where combusti-
ble 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. 
     
        
        Page 332 of 416

332 Practical hintsReplacing bulbsRear lamps Notes on bulb replacement
Use only 12 volt bulbs of the same type 
and with the specified watt rating. 
Switch lights off before changing a bulb 
to prevent short circuits. 
Always use a clean lint-free cloth when 
handling bulbs. 
Your hands should be dry and free of oil 
and grease.
If the newly installed bulb does not light 
up, visit an authorized Mercedes-Benz 
Center.
Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized 
Mercedes-Benz Center.
Additional turn signal lamps in the 
exterior rear view mirrors
High mounted brake lamp
Bi-Xenon lamps*
Front fog lamps
Lamp
Type
8
Brake lamp
LED
9
Turn signal lamp
PY 21 W
10
Tail and standing 
lamp, side marker
P21/4W
11
Backup lamp
P21W
12
License plate lamps
C5W
13
Tail lamp, Rear fog 
lamp
P21/4W
14
High mounted brake 
lamp
LED
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing 
a bulb.
Halogen lamps contain pressurized gas. A 
bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Bi-Xenon lamps, 
it is dangerous to replace the bulb or repair 
the lamp and its components. We recom-
mend that you have such work done by a 
qualified technician. 
     
        
        Page 385 of 416

385 Technical terms
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 detona-
tion (knocking). The average of both 
the ->MON (Motor Octane Number) 
and RON (Research Octane Number) is 
posted at the pump, also known as AN-
TI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock 
prevents the transmission selector le-
ver from being inadvertently moved out 
of positionP without the SmartKey 
turned and the brake pedal depressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent 
systems, they are closely interfaced to 
provide effective occupant protection.Tele Aid System
(T
elematic A
larm I
dentification on 
D
emand)
The Tele Aid system consists of three 
types of response: automatic and man-
ual emergency, Roadside Assistance 
and information. Tele Aid is initially ac-
tivated by completing a subscriber 
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
viding that the vehicle’s battery is 
charged, properly connected, not dam-
aged and cellular and GPS coverage is 
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics.”
Tightening torque
Force times lever arm (e.g. a lug 
wrench) with which threaded fasteners 
such as wheel bolts are tightened.Tire speed rating
Part of a tire designation; indicates the 
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the 
road via the tires.
VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer 
and stamped on the body to uniquely 
identify each vehicle produced.
Voice control system*
Voice control system for car phones, 
portable cell phones and audio sys-
tems (radio, CD, etc.).