2016 MERCEDES-BENZ CLA air condition

Display messages
Possible causes/consequences and P Solutions
indicato r lamp remain s lit or goe s out depend s on how OCS clas-
sifies th e occupant .
If th e condition s are no t fulfilled , th e system is no t operating cor-
rectly. X
Visit a qualified specialist workshop immediately.
Fo r further information about th e Occupant Classification System,
see ( Y
page 51) .
Front Passenger
Airbag Enable d See
Operator' s Manual The front-passenger air bag and front-passenger knee bag are
enabled during th e journey, eve n though :R
a child, a small adult or an objec t weighin g less than th e sys-
tem' s weight threshold is locate d on th e front-passenger seat
or R
th e front-passenger seat is unoccupied
The system may detec t objects or forces applying additional
weight on th e seat .
G WARNIN G
The front-passenger fron t air bag and front-passenger knee bag
may be triggered unintentionally.
There is an increase d ris k of injury.X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 169).X
Switc h th e ignition off. X
Ope n th e front-passenger door. X
Remove th e child and th e child restrain t system from th e front-
passenger seat .X
Mak e sur e that there are no objects on th e seat addin g to th e
weight .
The system may otherwise detec t th e additional weight and
interpret th e seat occupant's weight as greate r than it actually
is. X
Kee p th e seat unoccupied , close th e front-passenger doo r and
switch on th e ignition .X
Observ e th e PASSENGER AI R BA G indicato r lamp s in th e ce nter
console and th e multifunction display and chec k th e following :238
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Seat unoccupied and ignition switched on :R
a self-diagnosi s is carrie d out . The PASSENGER AI R BA G OF F
and PASSENGER AI R BA G ON indicato r lamp s mus t ligh t up
simultaneousl y fo r approximately six secondsR
th e PASSENGER AI R BA G OF F indicato r lamp mus t then ligh t
up and remain lit after th e self-diagnosis. If th e indicato r lamp
is on , OCS has deactivated th e front-passenger fron t air bag
and front-passenger knee bag ( Y
page 51 )R
th e Front Passenger Air Bag Enable d See Opera‐
tor's Manual or Front Passenger Air Bag Disabled
See Operator' s Manual display message s mus t no t be
shown in th e multifunction displayX
Wait fo r a period of at leas t 60 seconds until th e necessar y sys-
te m checks hav e been completed.X
Mak e sur e that th e display message s do no t appea r in th e mul-
tifunction display.
If these condition s are fulfilled , th e front-passenger seat can be
occupied again . Whether th e PASSENGER AI R BA G OF F or ON
indicato r lamp remain s lit or goe s out depend s on how OCS clas-
sifies th e occupant .
If th e condition s are no t fulfilled , th e system is no t operating cor-
rectly. X
Visit a qualified specialist workshop immediately.
Fo r further information about th e Occupant Classification System,
see ( Y
page 51).
Lights
i Vehicles wit h LE D bulbs in th e ligh t clusters :
The display message fo r th e correspondin g lamp only appears when all of th e LEDs in th e
lamp hav e failed. Display messages 23 9
On-board computer and displays Z

Tires Display messages
Possible causes/consequences and P Solutions
Check Tire Pres‐
sure Soon Canada only:
The tire pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
Possible causes: R
you have changed the positions of the wheels and tires or instal-
led new wheels and tires. R
the tire pressure in one or more tires has dropped
G WARNING
Tire pressures that are too low pose the following hazards: R
they may burst, especially as the load and vehicle speed
increase. R
they may wear excessively and/or unevenly, which may greatly
impair tire traction. R
the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident. X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so. X
Secure the vehicle against rolling away ( Y
page 169).X
Check the tires and, if necessary, follow the instructions for a
flat tire ( Y
page 310). X
Check the tire pressures and, if necessary, correct the tire pres-
sure. X
Restart the tire pressure loss warning system when the tire
pressure is correct ( Y
page 336).
Check Tire Pres‐
sure Then Restart
Run Flat Indicator Canada only:
The tire pressure loss warning system generated a display mes-
sage and has not been restarted since. X
Set the correct tire pressure in all four tires. X
Restart the tire pressure loss warning system ( Y
page 336).
Run Flat Indicator
Inoperative Canada only:
The tire pressure loss warning system is faulty. X
Visit a qualified specialist workshop.250
Displa y messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Please Correc t
Tir e Pressure US A only:
The tire pressur e is to o low in at leas t on e of th e tires , or th e tire
pressur e difference between th e wheels is to o great.X
Chec k th e tire pressures at th e next opportunity ( Y
page 336).X
If necessary, correc t th e tire pressure.X
Restart th e tire pressur e monitor ( Y
page 338).
Check Tires US A only:
The tire pressur e in on e or mor e tires has dropped significantly.
The whee l position appears in th e multifunction display.
A warnin g tone also sounds.
G WARNIN G
Tir e pressures that are to o low pos e th e following hazards :R
they may burst, especially as th e load and vehicl e speed
increase . R
they may wear excessivel y and/o r unevenly, whic h may greatl y
impair tire traction .R
th e drivin g characteristics , as well as steerin g and braking, may
be greatl y impaired.
There is a ris k of an accident. X
Stop th e vehicl e without makin g any sudden steerin g or brakin g
maneuvers . Pay attention to th e traffic condition s as you do so.X
Secur e th e vehicl e against rollin g away ( Y
page 169).X
Chec k th e tires and , if necessary, follow th e instruction s fo r a
flat tire ( Y
page 310). X
Chec k th e tire pressur e ( Y
page 336).X
If necessary, correc t th e tire pressure.Display messages 25 1
On-board computer and displays Z

Safety systems Problem
Possible causes/consequences and P Solutions
' (USA only)
M (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds. G WARNING
The brake boosting effect is malfunctioning and the braking char-
acteristics may be affected.
There is a risk of an accident. X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances. X
Secure the vehicle against rolling away ( Y
page 169).X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction
display.
' (USA only)
M (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds. There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of an accident. X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances. X
Secure the vehicle against rolling away ( Y
page 169).X
Do not add brake fluid. Adding more will not remedy the mal-
function. X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction
display.260
Warning and indicator lamps in the instrument cluster
On-board computer and displays

Tires Problem
Possible causes/consequences and P Solutions
w
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit. The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
G WARNING
Tire pressures that are too low pose the following hazards: R
they may burst, especially as the load and vehicle speed
increase. R
they may wear excessively and/or unevenly, which may greatly
impair tire traction. R
the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident. X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so. X
Secure the vehicle against rolling away ( Y
page 169).X
Observe the additional display messages in the multifunction
display. X
Check the tires and, if necessary, follow the instructions for a
flat tire ( Y
page 310). X
Check the tire pressure ( Y
page 336).X
If necessary, correct the tire pressure.
w
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit. The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident. X
Observe the additional display messages in the multifunction
display. X
Visit a qualified specialist workshop immediately.270
Warning and indicator lamps in the instrument cluster
On-board computer and displays

Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
Mercedes-Benz Customer Assistance Center
at 1-800-FOR-MERCedes (1-800-367-6372)
or 1-866-990-9007
Emergency call Important safety notes
G WARNING
It can be dangerous to remain in the vehicle,
even if you have pressed the SOS button in an
emergency if: R
you see smoke inside or outside of the vehi-
cle, e.g. if there is a fire after an accident R
the vehicle is on a dangerous section of
road R
the vehicle is not visible or cannot easily be
seen by other road users, particularly when
dark or in poor visibility conditions
There is a risk of an accident and injury.
Leave the vehicle immediately in this or simi-
lar situations as soon as it is safe to do so.
Move to a safe location along with other vehi-
cle occupants. In such situations, secure the
vehicle in accordance with national regula-
tions, e. g. with a warning triangle.
General notes
Observe the notes on system activation
( Y
page 282).
An emergency call is dialed automatically if an
air bag or Emergency Tensioning Device is
triggered. You cannot end an automatically
triggered emergency call yourself.
An emergency call can also be initiated man-
ually.
As soon as the emergency call has been ini-
tiated, the indicator lamp in the SOS button
flashes. The Connecting Call
message
appears in the multifunction display.
The audio output is muted. Once the connection has been made, the
Call Connected
message appears in the
multifunction display.
All important information on the emergency is
transmitted, for example: R
current location of the vehicle (as deter-
mined by the GPS system) R
vehicle identification number R
information on the severity of the accident
Shortly after the emergency call has been ini-
tiated, a voice connection is automatically
established between the Customer Assis-
tance Center and the vehicle occupants. R
If the vehicle occupants respond, the
Mercedes-Benz Customer Assistance Cen-
ter attempts to get more information on the
emergency. R
If there is no response from the vehicle
occupants, an ambulance is immediately
sent to the vehicle.
If no voice connection can be established to
the Mercedes-Benz Customer Assistance
Center, the system has been unable to initiate
an emergency call.
This can occur, for example, if the relevant
mobile phone network is not available. The
indicator lamp in the SOS button flashes con-
tinuously.
The Call Failed message appears in the
multifunction display and must be confirmed.
In this case, summon assistance by other
means.
Making an emergency call Features 283
Stowage and features Z

Displaying service messages X
Switc h on th e ignition .X
Press th e Y or e butto n to selec t th e
Serv.
menu.X
Press th e c or d butto n to selec t th e
ASSYST PLU S
submen u and confirm by
pressing th e v button.
The servic e due dat e appears in th e multi-
function display.
Information about Service
Resetting th e ASSYS T PLUS service
interva l display
! If th e ASSYST PLU S servic e interval dis -
play has been inadvertentl y reset , this set -
ting can be correcte d at a qualified special-
ist workshop .
Hav e servic e wor k carrie d out as described
in th e Maintenance Booklet . Thi s may oth-
erwise lead to increase d wear and damage
to th e major assemblies or th e vehicle.
A qualified specialis t workshop , e.g. an
authorized Mercedes-Ben z Center, will reset
th e ASSYST PLU S servic e interval display
after th e servic e wor k has been carrie d out .
You can also obtain further information on
maintenance work, fo r example.
Specia l service requirement s
The specifie d maintenance interval take s only
th e normal operation of th e vehicle into
account. Under arduous operatin g condition s
or increase d load on th e vehicle, mainte -
nance wor k mus t be carrie d out more fre-
quently, fo r example:R
regular city drivin g wit h frequent intermedi-
at e stops R
if th e vehicle is primarily used to trave l
short distances R
use in mountainous terrain or on poo r road
surfaces R
if th e engin e is ofte n lef t idlin g fo r lon g peri-
ods
Under these or similar conditions, have, fo r
example, th e air filter, engin e oil and oil filte r
replaced or changed more frequently. Under
arduous operatin g conditions, th e tires mus t
be checke d more often. Further information
can be obtained at a qualified specialist work-
shop, e.g. an authorized Mercedes-Ben z Cen -
ter.
Drivin g abroadAn extensive Mercedes-Ben z Servic e networ k
is also available in other countries. You can
obtain further information from any author -
ized Mercedes-Ben z Center.
Car e
General notes
H Environmental not e
Dispose of empty packagin g and cleanin g
cloths in an environmentally responsible man -
ner.
! Fo r cleanin g your vehicle, do no t use any
of th e following : R
dry, rough or har d cloths R
abrasiv e cleanin g agents R
solvents R
cleanin g agents containin g solvents
Do no t scrub .
Do no t touch th e surfaces or protective
films wit h har d objects , e.g. a rin g or ic e
scraper. You could otherwise scratch or
damage th e surfaces and protective film.
! Do no t par k th e vehicle fo r an extended
period straight after cleanin g it , particularly
after havin g cleaned th e wheels wit h whee l
cleaner. Wheel cleaners could caus e
increase d corrosion of th e brake discs and
brake pads/linings. Fo r this reason , youCare 301
Maintenance and care Z