
Display messages Possible causes/consequences and
0050 Solutions00AC
Coolant Too Hot
Stop Vehicle Turn
Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Y page 156).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal
operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). The poly-V-belt may have torn.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Check the poly-V-belt.
If the poly-V-belt is torn:
! Do not continue driving.
The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Wait until the display message disappears before restarting the
engine. Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X Visit a qualified specialist workshop. Display messages
235
On-board computer and displays Z

Display messages Possible causes/consequences and
0050 Solutions003D The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R
a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Open the hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving.
The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. 00B2
Check Engine Oil
At Next Refueling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
X
Check the oil level when next refueling, at the latest
(Y page 289).
X If necessary, add engine oil ( Y page 291).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
www.mbusa.com (USA only). 00B2
Engine Oil Level
Low Stop Vehicle
Turn Engine Off The engine oil level is too low. There is a risk of engine damage.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Add engine oil ( Y page 291) and check the oil level
(Y page 289). 236
Display messages
On-board computer and displays

SmartKey
Display messages Possible causes/consequences and
0050 Solutions00AF
Key Does Not
Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey. 00AF
Take Your Key
from
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. 00AF
Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. Warning and indicator lamps in the
instrument cluster
Overview of warning and indicator
lamps
0058 Low-beam
headlamps(Y page 99)
003E003D Turn signals (Y
page 103)
0057 High-beam headlamps
(
Y page 103)
005A Fog lamps (Y page 101)
005E Rear fog lamp (Y page 101)
00E9 Seat belts (Y page 248)
0027 (USA) Brakes (Y page 249)
004D (Canada) Brakes (yellow) (Y page 249)
0025 ABS (Y page 250)
00E5 ESP®
(Y page 252)
00BB ESP®
OFF (Y page 252)
0075 SRS (Y page 255)
00B9 Check Engine (Y page 256)
00B6 Reserve fuel (Y page 256)
00AC Coolant (Y page 256)
00BA Distance warning signal
(Y page 258)
0077 Tire pressure monitor
(Y page 259) Warning and indicator lamps in the instrument cluster
247
On-board computer and displays Z

Safety
Seat belts Problem Possible causes/consequences and
0050 Solutions00E9
After starting the
engine, the red seat
belt warning lamp
lights
up for six seconds. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt ( Y page 50).00E9
After starting the
engine, the red seat
belt warning lamp
lights
up. In addition, a
warning tone sounds
for up to six seconds. The driver's seat belt is not fastened.
X
Fasten your seat belt ( Y page 50).
The warning tone ceases. 00E9
The red seat belt
warning lamp lights up
after the engine starts,
as soon as the driver's
or the front-passenger
door is closed.
The driver or front passenger has not fastened their seat belt.
X
Fasten your seat belt ( Y page 50).
The warning lamp goes out. There are objects on the front-passenger seat.
X
Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. 00E9
The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds.
The driver or front passenger has not fastened their seat belt. In
addition, you are
driving
faster than 15 mph (25 km/h) or you have
briefly driven faster than 15 mph (25 km/h).
X Fasten your seat belt ( Y page 50).
The warning lamp goes out and the intermittent warning tone
ceases. There are objects on the front-passenger seat. In addition, you are
driving faster than 15 mph (25 km/h) or you have briefly driven
faster than 15 mph (25 km/h).
X
Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases.248
Warning and indicator lamps in the instrument cluster
On-board computer and displays

If the rear bench seat is not occupied:
X
Insert the belt tongue on the outer seat
belts into the buckle of opposite seat
belt 0043.
X Secure the load with sufficiently strong and
wear-resistant tie downs.
X Pad sharp edges for protection. Stowage areas
Stowage space
Important safety notes G
WARNING
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
storing objects in the vehicle. Put luggage or
cargo in the cargo compartment if possible.
Do not pile luggage or cargo higher than the
seat backrests.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
R braking
R vehicle maneuvers
R an accident
Stowage compartments in the front Glove box X
To open: pull handle 0043 and open glove box
flap 0044.
X To close: fold glove box flap 0044 upwards
until it engages. 0047
Glove box unlocked
0048 Glove box locked
X To lock:(Y page 70) insert the mechanical
key into the lock
and turn it 90° clockwise
to position 0048.
X To unlock:(Y page 70) insert the
mechanical key into the
lock and turn it 90°
counter-clockwise to position 0047.
i The glove box can only be locked and
unlocked using the mechanical key.
Stowage compartment/telephone
compartment under the armrest/in the
center console 0043
Small stowage compartment
0044 Release button for the armrest Stowage areas
263
Stowage and features Z

Folding the seat backrest forward
To fold forward the seat backrests, proceed
as follows:
X
Open the rear doors.
This allows you better access to release
lever 0043.
X Remove the center head restraint
(Y page 88).
X Pull catch 0043 in the direction of the arrow.
The corresponding rear
seat
backrest is not
engaged.
X Fold the backrest forwards.
The rear seat backrest engages audibly. 0044
Backrest folded forward
Folding the seat backrest back !
Make sure that the seat belt does not
become trapped when folding
the rear seat
backrest back. Otherwise, it could be
damaged. X
Pull release lever 0043.
The corresponding seat backrest is
released.
X Fold backrest 0044 backwards in the
direction of the arrow.
The seat catch engages audibly.
X Install the head restraint (Y page 88).
Rear bench seat Seat backrest release lever
Seat backrest release lever
0043
Long lever
0044 Short lever
X Remove the head restraints ( Y page 88).
X Pull short lever 0044 in the direction of the
arrow and hold it.
X Pull long lever 0043 in the direction of the
arrow and fold
the
seat backrest forwards. Stowage areas
265
Stowage and features Z

Cleaning the seat belts
G
WARNING
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 clean the
seat belts using chemical
cleaning agents. Do not dry the seat belts
by heating at temperatures above 176 ‡
(80 †) or in direct sunlight.
X Use clean, lukewarm water and soap
solution.
Cleaning the headliner and carpets X
Headliner: if it is very dirty, use a soft brush
or dry shampoo.
X Carpets: use the carpet and textile
cleaning agents recommended and
approved by Mercedes-Benz. 300
Care
Maintenance and care

This information describes the type of tire
cord and the number of layers in
sidewall
0043 and under tire tread 0044.
i Tire data is vehicle-specific and may
deviate from the data in the example. Definition of terms for tires and
loading
Tire ply composition and material used Describes the number of layers or the number
of rubber-coated belts in the tread and the
sidewall of the tire. These are made of steel,
nylon, polyester and other materials.
Bar
Metric unit for tire pressure.
14.5038 pounds per square inch (psi) and
100 kilopascals (kPa) are the equivalent of
1 bar.
DOT (Department of Transportation) DOT marked tires fulfill the requirements of
the United States Department of
Transportation.
Normal occupant weight
The number of occupants for which the
vehicle is designed multiplied by
68 kilograms (150 lbs).
Uniform
Tire Quality
Grading
StandardsA uniform standard to grade the quality of
tires with regards
to
tread quality, tire traction
and temperature characteristics. Ratings are
determined by tire manufacturers using U.S.
government testing procedures. The ratings
are molded into the sidewall of the tire.
Recommended tire pressure The recommended tire pressure applies to
the tires mounted at the factory. The Tire and Loading Information placard
contains the recommended
tire
pressures for
cold tires on a fully loaded vehicle and for the
maximum permissible vehicle speed.
The tire pressure table contains the
recommended pressures for cold tires for
various operating conditions, i.e. differing
load and speed conditions.
Increased vehicle weight due to
optional equipment This is the combined weight of all standard
and optional equipment available for the
vehicle, regardless of whether it is actually
installed on the vehicle or not.
Rim
This is the part of the wheel on which the tire
is mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum gross axle weight
rating. The actual
load
on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side.
Speed rating The speed rating is part of the tire
identification. It specifies
the
speed range for
which the tire is approved.
GTW (Gross Trailer Weight) The GTW is the weight of a trailer including
the weight of the load, luggage, accessories
etc. on the trailer.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight, if
applicable. The gross
vehicle
weight must not338
Tire labeling
Wheels and tires