Display messages Possible causes/consequences and
0050
0050Solutions 00AC
Coolant Low Stop Coolant Low Stop
Vehicle Turn Vehicle Turn
Engine Off Engine Off The coolant is too hot. In addition, the
00ACwarning lamp in the
instrument cluster lights up and a warning tone sounds.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Make sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.
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 If the coolant temperature increases again, visit a qualified
specialist workshop immediately.
! If the coolant temperature is over 248 ‡ (120 †), do not
continue driving. The engine will otherwise be damaged. The poly-V-belt may have torn. A warning tone also sounds.
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.
X If the poly-V-belt is not damaged: do not start the engine
again until the display message disappears. Otherwise, the
engine could be damaged.
X If the poly-V-belt is torn: do not continue driving. Consult a
qualified specialist workshop. 00AC The engine fan is defective.
X
At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads (e.g. driving in
mountainous terrain) and stop-and-go driving. Displays and operation
173On-board computer and displays Z
Display messages Possible causes/consequences and
0050
0050Solutions 003D 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 paying attention to road
and traffic conditions and switch off the engine.
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. 00BD
Check Coolant Check Coolant
Level See Level See
Operator's Manual Operator's Manual The coolant level is too low.
X
Add coolant, observing the warning notes before doing so
(Y page 216).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop.
! The coolant level is too low. Avoid making long journeys with
too little coolant in the cooling system. The engine will otherwise
be damaged.
The display messages and the corresponding symbol that
indicate that the coolant level is too low must not be ignored. 00B2
Engine Oil Level Engine Oil Level
low Stop Vehicle low Stop Vehicle
Turn Engine Off Turn Engine Off There is insufficient oil in the engine. 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 Top up and check the engine oil level (Y page 215).174
Displays and operationOn-board compu
ter and displays
Seat belts
Problem Possible causes/consequences and
0050
0050Solutions 0076
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 49).0076
After the engine
starts, a warning
tone sounds for
up to six
seconds. The driver's seat belt is not fastened.
G WARNING
If you do not wear the seat belt correctly, it no longer offers the
intended level of protection in the event of an accident. Under
certain circumstances, this could cause severe or even fatal
injuries in the event of an accident.
X Fasten your seat belt (Y page 49).
The warning tone ceases. 0076
The red seat belt
warning lamp
lights up after
the engine
starts, as soon
as the driver's
door or the
front-passenger
door is closed. The driver or front passenger has not fastened their seat belt.
G WARNING
If you do not wear the seat belt correctly, it no longer offers the
intended level of protection in the event of an accident. Under
certain circumstances, this could cause severe or even fatal
injuries in the event of an accident.
X Fasten your seat belt (Y page 49).
The warning lamp goes out. There are objects on the front-passenger seat.
G WARNING
If you place objects on the front-passenger seat, the system could
identify the seat as being occupied. In the event of an accident,
the restraint systems on the front-passenger side are triggered.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. Displays and operation
187On-board computer and displays Z
Problem Possible causes/consequences and
0050
0050Solutions 0076
The red seat belt
warning lamp
flashes and an
intermittent
audible warning
sounds. The driver or front passenger has not fastened their seat belt. The
vehicle is being driven faster than 15 mph(25 km/h) or has briefly
been driven faster than 15 mph(25 km/h).
G WARNING
If you do not wear the seat belt correctly, it no longer offers the
intended level of protection in the event of an accident. Under
certain circumstances, this could cause severe or even fatal
injuries in the event of an accident.
X Fasten your seat belt (Y page 49).
The warning lamp goes out and the intermittent audible warning
ceases. There are objects on the front-passenger seat. The vehicle is being
driven faster than 15 mph(25 km/h) or has briefly been driven
faster than 15 mph(25 km/h).
G WARNING
If you place objects on the front-passenger seat, the system could
identify the seat as being occupied. In the event of an accident,
the restraint systems on the front-passenger side are triggered.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent audible warning
ceases. 188
Displays and operationOn-board computer and displays
Cleaning the seat covers
General notes
!
Do not use microfiber cloths to clean
genuine leather, artificial leather or
Alcantara® covers. If used often, these can
damage the cover.
i Note that regular care is essential to
ensure that the appearance and comfort of
the covers is retained over time.
Genuine leather seat covers
Leather is a natural product.
It exhibits natural surface characteristics, for
example:
R Differences in the texture
R Signs of stretching and marking
R Slight nuances of color
These are characteristics of leather and not
material defects.
! To retain the natural appearance of the
leather, observe the following cleaning
instructions:
R Clean genuine leather covers carefully
with a damp cloth and then wipe the
covers down with a dry cloth.
R Make sure that the leather does not
become soaked. It may otherwise
become rough and cracked.
R Only use leather care agents that have
been tested and approved by Mercedes-
Benz. You can obtain these from a
qualified specialist workshop.
Seat covers of other materials
! Observe the following when cleaning:
R Clean artificial leather covers with a cloth
moistened with a solution containing
1% detergent (e.g. dish washing liquid).
R Clean cloth covers with a microfiber
cloth moistened with a solution
containing 1% detergent (e.g. dish
washing liquid). Rub carefully and always
wipe entire seat sections to avoid leaving
visible lines. Leave the seat to dry afterwards. Cleaning results depend on
the type of dirt and how long it has been
there.
R Clean Alcantara® covers with a damp
cloth. Make sure that you wipe entire
seat sections to avoid leaving visible
lines.
Cleaning the seat belts G
WARNING
Seat belts can become severely weakened if
bleached or dyed. This could cause the seat
belts to tear or fail, for instance, in the event
of an accident. This poses an increased risk
of injury or fatal injury.
Never bleach or dye the seat belts.
! Do not clean the seat belts using chemical
cleaning agents. Do not dry the seat belts
by warming them above 176 ‡ (80 †) or
placing them in direct sunlight.
X Use clean, lukewarm water and soap
solution. 226
CareMaintenance and care
R
Do not start the engine if the battery is frozen. Let the battery thaw first.
R Only jump-start from batteries with a 12 V voltage rating.
R Only use jumper cables which have a sufficient cross-section and insulated terminal clamps.
R If the battery is fully discharged, leave the battery that is being used to jump-start connected
for a few minutes before attempting to start. This charges the battery slightly.
R Make sure that the two vehicles do not touch.
Make sure that:
R the jumper cables are not damaged.
R when the jumper cables are connected to the battery, uninsulated sections of the terminal
clamp do not come into contact with other metal sections.
R the jumper cables cannot come into contact with parts such as the V-belt pulley or the fan.
These parts move when the engine is started and while it is running.
X Press the electric parking brake handle.
X Shift the transmission to Pwith the button in the center console.
X Remove the SmartKey from the ignition lock.
X Switch off all electrical consumers (e.g. radio, blower, etc.).
X Open the hood (Y page 214). Position number
0084identifies the charged battery of the other vehicle or an equivalent jump-
starting device.
X Slide cover 0083of positive terminal 0043in the direction of the arrow.
X Connect positive terminal 0043on your vehicle to positive terminal 0044of donor battery 0084
using the jumper cable, beginning with your own battery.
X Start the engine of the donor vehicle and run it at idling speed. Jump-starting
241Breakdown assistance Z