Page 303 of 481

302 OperationDriving instructionsCatalytic 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 Maintenance Booklet.
Emission control
Certain engine systems 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 
only be carried out 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 
Maintenance Booklet.
!To prevent damage to the catalytic 
converters, 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 potentially 
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 403 of 481

402 Practical hintsReplacing bulbs
Notes on bulb replacement
Only use 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 
come on, visit an authorized 
Mercedes-Benz Center.Have the LEDs and bulbs for the following 
lamps replaced by an authorized 
Mercedes-Benz Center:
Additional turn signal lamps in the 
exterior rear view mirrors
Bi-Xenon* lamps
Front fog lamps
High mounted brake lamp
Brake lamps
Front and rear side marker lamps
Parking/standing lamps in the tail 
lamp assemblies
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing 
a bulb.
Keep bulbs out of reach of children.
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 Xenon lamps, it is 
dangerous to replace the bulb or repair the 
lamp and its components. We recommend 
that you have such work done by a qualified 
technician.
iHave the headlamp adjustment 
checked regularly. 
     
        
        Page 463 of 481

462 Technical termsRoll bar
Occupant protection system which 
consists of tubular steel sheathed in 
plastic.
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 
ANTI-KNOCK INDEX.
Shift lock*
When the vehicle with automatic trans-
mission is parked, this lock prevents 
the gear selector lever from being inad-
vertently moved out of positionP with-
out the SmartKey turned and the brake 
pedal depressed.Sidewall
(
page 345)
SRS
(Supplemental R
estraint S
ystem)
Seat belts, emergency tensioning 
device and air bags. Though indepen-
dent systems, they are closely inter-
faced 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-
vided that the vehicle’s battery is 
charged, properly connected, not dam-
aged and cellular and GPS coverage is 
available.Tightening torque
Force times lever arm (e.g. a lug 
wrench) with which threaded fasteners 
such as wheel bolts are tightened.
TIN
(T
ire I
dentification N
umber)
(
page 346)
Tire load rating
(page 346)
Tire ply composition and material used
(page 346)
Tire speed rating
(page 346)
Traction
(page 346)
Tread
(page 346)
Treadwear indicators
(page 346)
Uniform Tire Quality Grading Standards
(page 346)