warning lights MERCEDES-BENZ S CLASS 2016 Owner's Guide

Display messages
Possible causes/consequences and P Solutions
I (USA
only)
$ ( Canada
only)
Parkin g Brake Inop‐
erativ e The yellow $ warning lamp lights up. The red I (US A only)
or $ (Canada only) indicator lamp flashes for about te n seconds
after th e electric parking brak e has been applie d or released. It then
goe s out or remain s lit .
The electric parking brak e is malfunctioning , e.g. because of over-
voltag e or undervoltage. X
Remove th e caus e for th e overvoltage or undervoltage, e.g. by
charging th e battery or restarting th e engine.X
Engage or release th e electric parking brake.
If it remain s impossible to apply or release th e electric parking brake:X
Switc h off th e ignition and tur n it bac k on .X
Engage or release th e electric parking brake.
If th e electric parking brak e still canno t be released:X
Consult a qualified specialist workshop .
If th e electric parking brak e still canno t be applied:X
Visit a qualified specialist workshop .
The yellow $ warning lamp lights up and th e red I (US A only)
or $ (Canada only) indicator lamp flashes .
It is no t possibl e to apply th e electric parking brak e manually.X
Shift th e transmission to position P .X
Visit a qualified specialist workshop .
' (USA
only)
M ( Canada
only)
Check Brake Fluid
Level There is no t enough brak e flui d in th e brak e fluid reservoir .
In addition , th e ' (US A only) or M (Canada only) warning lamp
lights up in th e instrumen t cluste r and a warning tone sounds.
G WARNIN G
The braking effec t may be impaired.
There is a ris k of an accident.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. Do no t continu e drivin g
under any circumstances. X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Consult a qualified specialist workshop .X
Do no t add brak e fluid . This does no t correc t th e malfunction .
& Check Brake Pad Wea r The brak e pads/linings hav e reached their wear limit.
US A only: th e red ' brak e system warning lamp also lights up while
th e engin e is running. X
Visit a qualified specialist workshop .
S Inoperative On e or mor e main features of th e mbrace system are malfunctioning .X
Visit a qualified specialist workshop .Display messages 28 3
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
u SRS Malfunction Ser ‐
vic e Required The restrain t system is faulty. The u warning lamp also lights up in
th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th e event of an accident, may no t be triggered .
There is an increased ris k of injury.X
Visit a qualified specialist workshop immediately.
Fo r further information about th e restrain t system, see ( Y
page 44) .
u Front Lef t Malfunc‐
tio n Servic e
Required or Front
Right Malfunction
Servic e Required The restrain t system has malfunctioned at th e fron t on th e lef t or right .
The u warning lamp also lights up in th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th e event of an accident, may no t be triggered .
There is an increased ris k of injury.X
Visit a qualified specialist workshop immediately.
u Rea r Lef t Malfunc‐
tio n Servic e
Required or Rea r
Right Malfunction
Servic e Required The restrain t system has malfunctioned at th e rear on th e lef t or right .
The u warning lamp also lights up in th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th e event of an accident, may no t be triggered .
There is an increased ris k of injury.X
Visit a qualified specialist workshop immediately.
u Rea r Lef t Malfunc‐
tio n Servic e
Required or Rea r
Right Malfunction
Servic e Required G WARNIN G
If th e seat belt buckl e extender is no t in th e predefine d position , th e
seat belt canno t provid e th e intended level of protection .
There is an increased 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
Perfor m th e specified assistanc e measures when display message
Check Lef t Rea r Bel t See Operator' s Manual or Check
Right Rea r Bel t See Operator' s Manual is shown
( Y
page 285).
If th e display message does no t disappear :X
Visit a qualified specialist workshop immediately. Display messages 28 7
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
u Rea r Center Malfunc‐
tio n Servic e
Required The restrain t system has malfunctioned at th e rear center. The u
warning lamp also lights up in th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th e event of an accident, may no t be triggered .
There is an increased ris k of injury.X
Visit a qualified specialist workshop immediately.
u Lef t Sid e Curtai n
Airbag Malfunction
Servic e Required or
Right Sid e Curtai n
Airbag Malfunction
Servic e Required There is a malfunction in th e left-han d or right-hand window curtai n air
bag.
The u warning lamp also lights up in th e instrumen t cluster.
G WARNIN G
The lef t or right window curtai n air bag may either be triggered unin-
tentionally or, in th e event of an accident, may no t be triggered .
There is an increased ris k of injury.X
Visit a qualified specialist workshop immediately.288
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
I Check Lef t Daytim e
Runnin g Light or
Check Right Daytim e
Runnin g Light The lef t or right-hand daytime runnin g lamp is faulty.X
Visit a qualified specialist workshop .
I Active Headlamps
Inoperative The active ligh t function is faulty.X
Visit a qualified specialist workshop .
I Malfunction See
Operator’ s Manual The exterio r lighting is defective. X
Visit a qualified specialist workshop .
I Aut o Lam p Function
Inoperative The ligh t sensor is defective. X
Visit a qualified specialist workshop .
I Switch Off Lights You leav e th e vehicl e and th e lights are switched on . A warning tone
also sounds. X
Turn th e ligh t switch to position X .
I Switch On Headlamps You are drivin g wit h low-beam headlamp s switched off .X
Turn th e ligh t switch to position X or X .
Adaptive Highbeam
Assist Plu s Inoper ‐
ative Adaptive Highbea m Assis t Plus is faulty.X
Visit a qualified specialist workshop .
Adaptive Highbeam
Assist Plu s Cur ‐
rently Unavailable
See Operator' s Man ‐
ual Adaptive Highbea m Assis t Plus is deactivated and temporarily inop-
erative .
Possibl e causes are: R
th e windshield in th e camera' s field of vision is dirty.R
visibilit y is impaire d due to heav y rain , snow or fog .X
Clean th e windshield.
If th e system detects that th e camera is full y operational again , th e
Adaptive Highbeam Assist Plu s Available Again message is
displayed.
Adaptive Highbea m Assis t Plus is operational again .Display messages 29 3
On-board computer and displays Z

X
To switch on the heating function: press
and hold button D until the red indicator
lamp on the button lights up. X
To switch off the function: press and hold
button D until the indicator lamp on the but-
ton goes out.
The rubber mat can be removed for cleaning.
Clean with clear, lukewarm water only.
Do not use hard or sharp objects to clean the
cup holder. Use only a soft cloth to clean it.
Sun visors
Overview
G WARNING
If the mirror cover of the vanity mirror is folded
up when the vehicle is in motion, you could be
blinded by incident light. There is a risk of an
accident.
Always keep the mirror cover folded down
while driving.
C
Mirror lightD
Additional sun visor

Observe the following to make sure that the
automatic transmission stays in position N neu-
tral:
Operating with the SmartKey: X
Make sure that the ignition is switched on. X
Make sure that the vehicle is stationary. X
Depress and hold the brake pedal. X
Shift to neutral N .X
Release the brake pedal. X
Release the electric parking brake, if neces-
sary. X
Switch off the ignition and leave the SmartKey
in the ignition lock.
Operating with the Start/Stop button: X
Make sure that the ignition is switched on. X
Make sure that the vehicle is stationary. X
Depress and hold the brake pedal. X
Engage park position P .X
Release the brake pedal. X
Remove Start/Stop button from ignition lock
( Y
page 162).X
Insert the SmartKey into the ignition lock. X
Switch on the ignition. X
Depress and hold the brake pedal. X
Shift to neutral N .X
Release the brake pedal. X
Release the electric parking brake, if neces-
sary. X
Switch off the ignition and leave the SmartKey
in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off wax
from the windshield and the wiper blades. This
will prevent smears and reduce wiping noises
caused by residue on the windshield.
Washing by hand
In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in each country. X
Do not use hot water and do not wash the
vehicle in direct sunlight. X
Use a soft sponge to clean. X
Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz. X
Thoroughly hose down the vehicle with a gen-
tle jet of water. X
Do not point the water jet directly towards the
air inlet. X
Use plenty of water and rinse out the sponge
frequently. X
Rinse the vehicle with clean water and dry
thoroughly with a chamois. X
Do not let the cleaning agent dry on the paint-
work.
Carefully remove all deposits of road salt as
soon as possible when driving in winter.
Power washers
G WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-
edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Always maintain a distance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information about the
correct distance is available from the equip-
ment manufacturer.
Move the power washer nozzle around when
cleaning your vehicle.
Do not aim directly at any of the following: R
tires R
door gaps, roof gaps, joints, etc. R
electrical components R
battery R
connectors R
lights R
seals R
trim R
ventilation slots
Damaged seals or electrical components can
lead to leaks or failures.360
Care
Maintenance and care

! Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after cleaning.
Braking heats the brake discs and the brake
pads/linings, thus drying them. The vehicle
can then be parked.
Cleaning the windows
G WARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
! Do not use dry cloths, abrasive products,
solvents or cleaning agents containing sol-
vents to clean the inside of the windows. Do
not touch the insides of the windows with
hard objects, e.g. an ice scraper or ring. There
is otherwise a risk of damaging the windows.
! Clean the water drainage channels of the
windshield and the rear window at regular
intervals. Deposits such as leaves, petals and
pollen may under certain circumstances pre-
vent water from draining away. This can lead
to corrosion damage and damage to elec-
tronic components. X
Clean the inside and outside of the windows
with a damp cloth and a cleaning product that
is recommended and approved by Mercedes-
Benz.
Cleaning wiper blades
G WARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury. Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
! Do not pull the wiper blade. Otherwise, the
wiper blade could be damaged.
! Do not clean wiper blades too often and do
not rub them too hard. Otherwise, the graph-
ite coating could be damaged. This could
cause wiper noise.
! Hold the wiper arm securely when folding
back. The windshield could be damaged if the
wiper arm smacks against it suddenly. X
Fold the windshield wiper arms away from the
windshield ( Y
page 136). X
Carefully clean the wiper blades with a damp
cloth. X
Fold the windshield wiper arms back again
before switching on the ignition.
Cleaning the exterior lighting
! Only use cleaning agents or cleaning cloths
which are suitable for plastic light lenses.
Unsuitable cleaning agents or cleaning cloths
could scratch or damage the plastic light len-
ses. X
Clean the plastic lenses of the exterior lights
with a wet sponge and a mild cleaning agent,
e.g. Mercedes-Benz car shampoo or cleaning
cloths.
Mirror turn signals
! Only use cleaning agents or cleaning cloths
that are suitable for plastic lenses. Unsuitable
cleaning agents or cleaning cloths could
scratch or damage the plastic lenses of the
mirror turn signals. X
Clean the plastic lenses of the mirror turn sig-
nals in the exterior mirror housing using a wet
sponge and mild cleaning agent, e.g.
Mercedes-Benz car shampoo or cleaning
cloths.
Cleaning the sensors
! If you clean the sensors with a power
washer, make sure that you keep a distance
of at least 11.8 in (30 cm) between the vehicle
and the power washer nozzle. Information362
Care
Maintenance and care

Important safety notes
G WARNIN G
Eac h tire, includin g th e spar e (if provided),
should be checke d at least once every two
week s when cold and inflated to th e pressur e
recommended by th e vehicl e manufacturer
on th e Tir e and Loading Information placard
on th e driver' s door B-pillar or th e tire pres-
sur e label on th e inside of th e fuel filler flap . If
your vehicl e has tires of a differen t siz e than
th e siz e indicated on th e Tir e and Loading
Information placard or, if available, th e tire
pressur e label, you should determine th e
proper tire pressur e for those tires .
As an added safet y feature, your vehicl e has
been equipped wit h a tire pressur e monitoring
system (TPMS) that illuminate s a low tire pres-
sur e telltale when on e or mor e of your tires
are significantly underinflated. Accordingly,
when th e low tire pressur e telltale lights up,
you should stop and chec k your tires as soo n
as possible , and inflat e them to th e proper
pressure. Drivin g on a significantly underin-
flated tire causes th e tire to overheat and can
lead to tire failure.
Underinflation also reduce s fuel efficiency
and tire tread life , and may affec t th e vehicle's
handlin g and stopping ability. Pleas e note that
th e TPM S is no t a substitut e for proper tire
mainte
nance , a nd it is th e d river' s responsi-
bilit y to maintai n correc t tire pressure, eve n if
underinflation has no t reached th e level to
trigge r illumination of th e TPM S low tire pres-
sur e telltale.
Your vehicl e has also been equipped wit h a
TPM S malfunction indicator to indicat e when
th e system is no t operating properly. The
TPM S malfunction indicator is combined wit h
th e low tire pressur e telltale. When th e sys-
te m detects a malfunction , th e warning lamp
will flas h for approximately a minute and then
remain continuously illuminated. This
sequenc e will be repeated every time th e vehi-
cle is started as lon g as th e malfunction
exists. When th e malfunction indicator is illu- minated, th e system may no t be able to detec t
or signal low tire pressur e as intended.
TPM S malfunction s may occur for a variet y of
reasons, includin g th e installation of incom-
patible replacemen t or alternate tires or
wheels on th e vehicl e that preven t th e TPM S
from functioning properly. Always chec k th e
TPM S malfunction telltale after replacing on e
or mor e tires or wheels on your vehicl e to
ensur e that th e replacemen t or alternate Tires
and wheels allow th e TPM S to continue to
function properly.
It is th e driver' s responsibilit y to set th e tire
pressur e to that recommended for cold tires
whic h is suitable for th e operating situation
( Y
page 387). Not e that th e correc t tire pressur e
for th e curren t operating situation must first be
taught-in to th e tire pressur e monitor. If there is
a substantial loss of pressure, th e warning
threshold for th e warning message is aligned to
th e referenc e value s taught-in . Restart th e tire
pressur e monitor after adjusting th e pressur e of
th e cold tires ( Y
page 392). The curren t pres-
sures are saved as ne w referenc e values. As a
result , a warning message will appear if th e tire
pressur e drops significantly.
The tire pressur e mon ito r does no t w
arn you of
an incorrectl y set tire pressure. Observ e th e
note s on th e recommended tire pressur e
( Y
page 387).
The tire pressur e monitor is no t able to warn you
of a sudde n loss of pressure, e.g. if th e tire is
penetrated by a foreign object. In th e event of a
sudde n loss of pressure, brin g th e vehicl e to a
halt by braking carefully. Avoid abrup t steering
movements.
The tire pressur e monitor has a yellow warning
lamp in th e instrumen t cluste r for indicating
pressur e loss or a malfunction . Whether th e
warning lamp flashes or lights up indicates
whether a tire pressur e is to o low or th e tire
pressur e monitor is malfunctioning :R
if th e warning lamp is lit continuously, th e tire
pressur e on on e or mor e tires is significantly
to o low. The tire pressur e monitor is no t mal-
functioning . R
if th e warning lamp flashes for aroun d a
minute and then remain s lit constantly, th e
tire pressur e monitor is malfunctioning .
In addition to th e warning lamp , a message
appear s in th e multifunction display. Observ eTire pressure 391
Wheels and tires Z