Page 290 of 474

289 Operation
Driving instructions
Winter driving instructions
The most important rule for slippery or icy 
roads is to drive sensibly and to avoid 
abrupt acceleration, braking and steering 
maneuvers. Do not use the cruise control 
system under such conditions.
When the vehicle is in danger of skidding, 
move gear selector lever to positionN or in 
case of manual transmission declutch. 
Try to keep the vehicle under control by 
corrective steering action.Road salts and chemicals can adversely 
affect braking efficiency. Increased pedal 
force may become necessary to produce 
the normal braking effect.
Depressing the brake pedal periodically 
when traveling at length on salt-strewn 
roads can bring road-salt-impaired braking 
efficiency back to normal. 
If the vehicle is parked after being driven 
on salt-treated roads, the braking 
efficiency should be tested as soon as 
possible after driving is resumed.
For more information, see “Winter driving” 
(
page 336).
iFor information on driving with snow 
chains, see “Snow chains” 
(page 337).
Warning!
G
On slippery road surfaces, never downshift 
in order to obtain braking action. This could 
result in drive wheel slip and reduced 
vehicle control. Your vehicle’s ABS will not 
prevent this type of control loss.
Warning!
G
Make sure not to endanger any other road 
users when carrying out these braking 
maneuvers.
Warning!
G
If the vehicle becomes stuck in snow, make 
sure snow is kept clear of the exhaust pipe 
and from around the vehicle with the engine 
running. Otherwise, deadly carbon monox-
ide (CO) gases may enter vehicle interior re-
sulting in unconsciousness and death.
To assure sufficient fresh air ventilation, 
open a window slightly on the side of the 
vehicle not facing the wind.Warning!
G
The outside temperature indicator is not 
designed to serve as an ice-warning device 
and is therefore unsuitable for that purpose. 
Indicated temperatures just above the 
freezing point do not guarantee that the 
road surface is free of ice. 
     
        
        Page 292 of 474

291 Operation
Driving instructions
Control and operation of radio transmitters
COMAND*, radio and telephone*Telephones* and two-way radios
Radio transmitters, such as a portable 
telephone or a citizens band unit should 
only be used inside the vehicle if they are 
connected to an antenna that is installed 
on the outside of the vehicle.
Refer to the radio transmitter operation 
instructions regarding use of an external 
antenna.
Catalytic converter
Your Mercedes-Benz is equipped with 
monolithic-type catalytic converters, an 
important element in conjunction with the 
oxygen sensors to achieve substantial 
control of the pollutants in the exhaust 
emissions. Keep your vehicle in proper 
operating condition by following our 
recommended maintenance instructions 
as outlined in your Maintenance Booklet.
Warning!
G
Please do not forget that your primary 
responsibility is to drive the vehicle safely. 
Only operate the COMAND (Cockpit 
Management and Data System), radio or 
telephone
1 if road, weather and traffic 
conditions permit.
Bear in mind that at a speed of just 30 mph 
(approximately 50 km/h), your vehicle is 
covering a distance of 44 feet 
(approximately 14 m) every second.
1Observe all legal requirements.
Warning!
G
Never operate radio transmitters equipped 
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna) 
from inside the vehicle while the engine is 
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, 
possibly resulting in an accident and 
personal injury.
!To prevent damage to the catalytic 
converters, only use 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. 
     
        
        Page 400 of 474

399 Practical hints
Replacing bulbs
Rear lamps 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.
Lamp
Type
7
High mounted brake 
lamp
LED
8
Brake lamp
P21W
9
Turn signal lamp
PY 21 W
a
Parking and side 
marker lamp
P21/5W
b
Backup lamp
P21W
c
License plate lamps
C5W
d
Rear fog lamp (driver’s 
side only), tail and 
standing lamp
P21/4W
Warning!
G
Bulbs and bulb sockets can be very hot. 
Allow 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. 
     
        
        Page 454 of 474

453 Technical terms
PSI
(P
ounds per s
quare i
nch) (
page 333)
Recommended tire inflation pressure
(
page 333)
Restraint systems
Seat belts, child restraints, lower 
anchors and tethers for children 
(LATCH). As independent systems, 
their protective functions complement 
one another.
Rim
(page 333)
RON
(Research 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.
Sidewall
(
page 333)
SRS
(Supplemental R
estraint S
ystem)
Air bags, air bag control unit (with 
crash sensor), emergency tensioning 
device. 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 
manual emergency, roadside assis-
tance and information. Tele Aid is 
initially activated by completing a 
subscriber agreement and placing an 
acquaintance call.
The Tele Aid system is operational 
provided that the vehicle’s battery is 
charged, properly connected, not 
damaged and cellular and GPS 
coverage is available.