2016 MERCEDES-BENZ B-Class ELECTRIC radiator

Display messagesPossible causes/consequences andMSolutions
Radar Sensors
Dirty See Opera‐
tor's Manual
COLLISION PREVENTION ASSIST PLUS is temporarily restricted or
inoperative.
Possible causes are:
Rthe sensors in the radiator trim and/or in the bumpers are dirty
Rthe function of COLLISION PREVENTION ASSIST PLUS is
impaired due to heavy rain or snow.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage disappears. COLLISION PREVENTION ASSIST PLUS is opera-
tional again.
If th e display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecur eth e vehicle against rolling away (Ypage 153).
XSwitc h offthe drive system.
XClean the sensors in the following location s(Ypage 277):
Rin the radiatortrim
Rin thefront bumper
Rin the rear bumper, particularly in the middle of the rear
bumper
XStart th e drive system again.
The display message disappears.
ã
Acoustic Vehicle
Indication Inoper‐
ative
The sound generator is not working. The vehicle can still be driven;
however, no vehicle sounds can be generated. As a result, your
vehicle may not be heard by other road users until it is very close
to them, or it may not be heard at all.
XDrive with particular care, allowing for the possibility that other
road users may behave unpredictably.
XVisit a qualified specialist workshop.
6
SRS Malfunction
Service Required
The restraint system is faulty. The 6warning lamp also lights
up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
Fo r further information about the restraint system, see
(
Ypage 40).
210Display messages
On-board computer and displays

Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops (
Ypage 26).
Engine compartment
Hood
Important safety notes
GWARNING
If the hood is unlatched, it may open up when the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. Before
every trip, ensure that the hood is locked.
GWARNING
When opening and closing the hood, it may
suddenly fall into the closed position. There is a risk of injury to persons within range of
movement of the hood.
Open and close the hood only when no one is
within its range of movement.
GWARNING
Certain components in the engine compart-
ment may be very hot, e.g. the drive system
and radiator. Working in the engine compart-
ment poses a risk of injury.
If possible, let the drive system cool down and only touch the components described in the
following.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There is a risk of injury.
If you need to do any work inside the engine
compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothing and hair, for exam-
ple, away from moving parts
Opening the hood
GWARNING
Certain components in the engine compart-
ment may be very hot, e.g. the drive system
and radiator. Working in the engine compart-
ment poses a risk of injury.
If possible, let the drive system cool down and only touch the components described in the
following.
GWARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured by
the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
!Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood.
270Engine compartment
Maintenance and care

XMake sure that the windshield wipers are
switched off.
XPull release lever:on the hood.
The hood is released.
XReach into the gap between the hood and
the radiator trim and press hood catch
lever ;to the left.
XRaise the hood.
XPull support strut ?out of bracket A.
XLift up support strut ?and insert it into
yellow retaining clip =.
Closing the hood
XRaise the hood slightly and, at the same
time, remove support strut ?from yellow
retaining clip =.
XSwing support strut ?down and press it
into bracket Auntil it engages.
XLower the hood and let it fall from a height
of approximately 8 in (20 cm).
XCheck that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Do not press the hood
closed. Open the hood again and close it
with a little more force.
Checking and adding other service
products
Checking coolant level
GWARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
!The coolant may only be checked and cor-
rected when the engine is cool (coolant
temperature below 104 ‡ (40 †). Check-
ing the coolant when the coolant tempera-
ture is above 104 ‡ (40 †) may result in
damage to the engine or to the engine cool-
ing system.
Engine compartment271
Maintenance and care
Z

XPark the vehicle on a level surface.
Only check the coolant level when the vehi-
cle is on a level surface and the drive sys-
tem has cooled down.
XTurn the SmartKey to position2in the igni-
tion lock (
Ypage 131).
XCheck the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
104 ‡ (40 †).
XTurn the SmartKey to position 0in the igni-
tion lock (
Ypage 131).
XSlowly turn cap :counter-clockwise to
relieve excess pressure.
XTurn cap :further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank ;.
XIf necessary, add coolant that has been tes-
ted and approved by Mercedes-Benz.
XReplace cap:and turn it clockwise as far
as it will go.
For further information on coolant, see
(
Ypage 336).
Windshield washer system
GWARNING
Certain components in the engine compart-
ment may be very hot, e.g. the drive system
and radiator. Working in the engine compart-
ment poses a risk of injury.
If possible, let the drive system cool down and only touch the components described in the
following.
GWARNING
Windshield washer concentrate is highly flam- mable. If it comes into contact with hot com-
ponents in the front compartment, it may
ignite. There is a risk of fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
XTo open: pull cap:upwards by the tab.
XAdd the premixed washer fluid.
XTo close: press cap :onto the filler neck
until it engages.
If the washer fluid level drops below the rec-
ommended minimum of 1 liter, a message
appears in the multifunction display prompt-
ing you to add washer fluid (
Ypage 227).
Further information on windshield washer
fluid/antifreeze (
Ypage 336).
ASSYST PLUS
Service message
The ASSYST PLUS service interval display
informs you of the next service due date.
You can find information on the type of ser-
vice and service intervals in the Maintenance
Booklet.
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
The multifunction display shows a service
message for several seconds, e.g.:
RService A in .. Days
RService A Due
RService A Exceeded by .. Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until
the next service due date is displayed.
The letter A
orB, possibly in connection with a
number or another letter, indicates the type
272ASSYST PLUS
Maintenance and care