77 Safety and Security
Occupant safety
BabySmart
TM air bag deactivation
system
175indicator lampSpecial BabySmart
TM compatible child
seats, designed for use with the
Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are
required for use with the BabySmart
TM
air bag deactivation system. With the spe-
cial child seat properly installed, the pas-
senger front air bag will not deploy.
The 75indicator lamp will be il-
luminated, except with the SmartKey re-
moved or in starter switch position0.
Children too big for child restraint systems
should use regular seat belts. Position the
shoulder belt across chest and shoulder, not
face or neck. A booster seat may be neces-
sary to achieve proper belt positioning for
children from 41 lbs until they reach a
height where a lap/shoulder belt fits proper-
ly without a booster.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.
When the child restraint is not in use, re-
move it from the vehicle or secure it with the
seat belt to prevent the child restraint from
becoming a projectile in the event of an ac-
cident.
Do not leave children unattended in the ve-
hicle; even if the children are secured in a
child restraint system. Unsupervised chil-
dren in a child restraint system may use ve-
hicle equipment and may cause serious
personal injury.
iThe system does not deactivate the
head-thorax air bag and the ETD (emer-
gency tensioning device).
107 Controls in detail
Memory function*
Memory function*
Prior to operating the vehicle, the driver
should check and adjust the seat height,
seat position fore and aft, and seat back-
rest angle if necessary, to ensure adequate
control, reach and comfort. The head re-
straint should also be adjusted for proper
height. See also the section on air bags for
proper seat positioning (
page 65).
In addition, adjust the steering wheel to
ensure adequate control, reach, operation
and comfort. Both the interior and exterior
rear view mirrors should be adjusted for
adequate rear vision.
Fasten seat belts. Infants and small chil-
dren should be seated in a properly se-
cured restraint system that complies with
U.S. Federal Motor Vehicle Safety
Standards 213 and 255 and Canadian Mo-
tor Vehicle Safety Standards 213
and 210.2.The following settings are stored when
using the buttons on the outer side of the
respective seat:
Driver and passenger seat:
Seat and backrest position
Driver only:
Steering wheel position
Exterior rear view mirrorsThe memory button and memory position
switch are located on the outer side of
each seat.
1Memory buttonM
2Memory position switch
Switch on the ignition (
page 36).
or
Open the respective door.
Warning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.
335 Operation
Tires and wheels
General:
Depending on the design standards used,
the tire size molded into the sidewall may
have no letter or a letter preceding the tire
size designation.
No letter preceding the size designation
(as illustrated above): Passenger car tire
based on European design standards.
Letter “P” preceding the size designation:
Passenger car tire based on U.S. design
standards.
Letter “LT” preceding the size designation:
Light Truck tire based on U.S. design
standards.
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only. Tire width
The tire width1 (
page 334) indicates
the nominal tire width in mm.
Aspect ratio
The aspect ratio2 (page 334) is the
dimensional relationship between tire
section height and section width and is
expressed in percentage. The aspect ratio
is arrived at by dividing section height by
section width.
Tire code
The tire code3 (
page 334) indicates
the tire construction type. The “R” stands
for radial tire type. Letter “D” means diag-
onal or bias ply construction; letter “B”
means belted-bias ply construction.
At the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240 km/h) can include a “ZR” in the size
designation (for example: 245/40 ZR 18).
For additional information, see “Tire speed
rating” (
page 336).Rim diameter
The rim diameter4 (
page 334) is the
diameter of the bead seat, not the
diameter of the rim edge. Rim diameter is
indicated in inches (in).
Tire load rating
The tire load rating5 (page 334) is a
numerical code associated with the
maximum load a tire can support.
For example, a load rating of 91 corre-
sponds to a maximum load of 1 356 lbs
(615 kg) the tire is designed to support.
See also “Maximum tire load”
(
page 340) where the maximum load as-
sociated with the load index is indicated in
kilograms and lbs.
355 Operation
Vehicle care
Paintwork, painted body components
Mercedes-Benz approved Paint Care
should be applied when water drops on the
paint surface do not “bead up”. This should
normally be done every 3 to 5 months, de-
pending on the climate and washing deter-
gent used.
Mercedes-Benz approved Paint Cleaner
should be applied if the paint surface
shows signs of embedded dirt (i.e. loss of
gloss).
Do not apply any of these products or wax
if your vehicle is parked in the sun or if the
hood is still hot.
Use the appropriate MB-Touch-Up
Stick for quick and provisional repairs
of minor paint damage (i.e. chips from
stones, vehicle doors, etc.).Engine cleaning
Prior to cleaning the engine compartment,
make sure to protect electrical compo-
nents and connectors from the intrusion of
water and cleaning agents.
Corrosion protection, such as
MB Anticorrosion Wax should be applied to
the engine compartment after every en-
gine cleaning. Before applying, all control
linkage bushings and joints should be lu-
bricated. The poly-V-belt and all pulleys
should be protected from any wax.Vehicle washing
In the winter, thoroughly remove all traces
of road salt as soon as possible.
Hand-wash
Do not use hot water or wash your vehicle
in direct sunlight.
Use only a mild car wash detergent,
such as Mercedes-Benz approved Car
Shampoo.
Thoroughly spray the vehicle with a dif-
fused jet of water.
Direct only a very weak spray towards
the ventilation intake.
Use plenty of water and rinse the
sponge and chamois frequently.
Rinse with clean water and thoroughly
dry with a chamois.
Do not allow cleaning agents to dry on
the finish.
!Affixing stickers, adhesive tape or sim-
ilar materials to painted body compo-
nents may damage the paintwork.
360 OperationVehicle careHeadliner and shelf below rear window
Use a soft bristle brush or a dry-sham-
poo cleaner in case of excessive dirt.
Seat belts
Use only clear, lukewarm water and
soap.Upholstery
Using aftermarket seat covers or wearing
clothing that have the tendency to give off
coloring (e.g. when wet, etc.) may cause
the upholstery to become permanently dis-
colored. By lining the seats with a proper
intermediate cover, contact-discoloration
will be prevented.
Leather upholstery
Wipe leather upholstery with a damp
cloth and dry thoroughly or clean with
Mercedes-Benz approved Leather
Care.
Exercise particular care when cleaning per-
forated leather as its underside should not
become wet.Wood trims
Dampen cloth using water and use
damp cloth to clean wood trims in your
vehicle.
!The webbing must not be treated with
chemical cleaning agents. Do not dry
the webbing at temperatures above
176°F (80°C) or in direct sunlight.Warning!
G
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
!Do not use solvents like tar remover or
wheel cleaner nor polishes or waxes as
these may be abrasive.
366 Practical hintsWhat to do if …4
The yellow fuel reserve warning lamp
flashes after starting the engine.
The fuel cap is not closed properly.
Close the fuel cap.
<
The red seat belt telltale comes on
after starting the engine with all
doors closed.
The seat belt telltale reminds you
and your passenger to fasten your
seat belts before driving off.
Fasten your seat belts (
page 71).
The red seat belt telltale flashes and
you additionally hear an intermittent
warning signal with increasing inten-
sity for a maximum of 60 seconds
when the vehicle’s speed exceeds
15 mph (25 km/h).
You and/or your passenger have
forgotten to fasten your seat belts.
There are items placed on the pas-
senger seat and therefore the sys-
tem senses the passenger seat as
being occupied.
Fasten your seat belts (
page 71).
Remove the items from the passenger seat
and put them in a safe place.
1
The red SRS indicator lamp comes
on while driving.
There is a malfunction in the re-
straint systems. The air bags or
emergency tensioning devices
(ETDs) could deploy unexpectedly or
fail to deploy in an accident.
Drive with added caution to the nearest au-
thorized Mercedes-Benz Center.
Problem
Possible cause/consequence
Suggested solution
Warning!
G
In the event that a malfunction of the SRS is
indicated as outlined above, the SRS may
not be operational. For your safety, we
strongly recommend that you visit an
authorized Mercedes-Benz Center immedi-
ately to have the system checked; otherwise
the SRS may not be activated when needed
in an accident, which could result in serious
or fatal injury, or it might deploy
unexpectedly and unnecessarily which
could also result in an accident and/or
injury to you or to others.
374 Practical hintsWhat to do if …Symbol messagesDisplay symbol
Display message
Possible cause/consequence
Possible solution
#
Battery/Alternator
Visit workshop
The battery is no longer charging.
Possible causes:
Alternator malfunctioning
Broken poly-V-belt
Do not forget that the brake system
requires electrical energy and may
be operating with restricted capa-
bility. Considerably greater brake
pedal force is required and the stop-
ping distance is increased.
Stop immediately and check the poly-V-belt.
If it is broken:
Do not continue to drive. Notify an au-
thorized Mercedes-Benz Center.
If it is in order:
Drive immediately to the nearest autho-
rized Mercedes-Benz Center. Adjust driv-
ing to be consistent with reduced
braking responsiveness.
376 Practical hintsWhat to do if …During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).Display symbol
Display message
Possible cause/conse-
quence
Possible solution
Ï
Coolant
Stop, engine off
The poly-V-belt could be
broken.
Stop the vehicle and immediately turn off the engine.
Check the poly-V-belt (
page 437).
If it is broken:
Do not continue to drive. Otherwise the engine will overheat
due to an inoperative water pump which may result in dam-
age to the engine. Notify an authorized Mercedes-Benz
Center.
If it is in order:
Do not continue to drive the vehicle with this message dis-
played. Doing so could result in serious engine damage that
is not covered by the Mercedes-Benz Limited Warranty.
Drive immediately to the nearest authorized
Mercedes-Benz Center.
Observe the coolant temperature display (
page 128).
!The engine should not be operated with
the coolant temperature above 248°F
(120°C).
Doing so may cause serious engine
damage which is not covered by the
Mercedes-Benz Limited Warranty.