sensor MERCEDES-BENZ SL-Class 2016 R231 Owner's Guide

Display messagesPossible causes/consequences andMSolutions
PRE-SAFE
PRE-SAFEFunctions
Currently Limited
SeeOperator'sMan‐
ual
PRE ‑S AF E®Brake is deactivated or temporarily inoperative. Pos -
sibl ecauses are:
Rfunction is impaire ddue to heav yrain or snow.
Rth esensor sin th eradiato rtrim and th ebumper are dirty.
Rth erada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion sor other source sof electromagnetic radiation .
RMercedes-AMG vehicles: ESP®is deactivated
Rthesystem is outside th eoperating temperature range.
Rth eon-boar dvoltag eis to olow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
PRE ‑S AF E
®Brake is operational again .
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XClean th esensor sin th eradiato rgrill and th ebumper
(
Ypage 546).
XRestart th eengine.
XMercedes-AMG vehicles: reactivat eES P®(Ypage 76) .
PRE-SAFEFunctions
LimitedSee Opera‐
tor's Manual
PRE-SAF E®Brake is inoperative due to amalfunction .BA SPLU Sor
th edistanc ewarnin gsignal may also hav efailed.
XVisit aqualified specialist workshop .
Display messages247
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Radar Sensors
Dirty See Opera‐
tor's Manual
At leaston eof th efollowing drivin gsystems or drivin gsafet ysys-
tems is temporarily restricted or inoperative:
RPRE-SAF E®Brake
RDISTRONIC PLU S
RActive LaneKeepin gAssis t
RActive Blind Spot Assis t
If th erada rsensor system in fron tis dirty, Active Blind Spot Assis t
will no tperform acourse-correcting brak eapplication .
Possibl ecauses are:
Rth esensor sin th eradiato rtrim and/o rin th ebumpers are dirty
Rth efunction of th edrivin gsystem and/o rdrivin gsafet ysystem
is impaire ddue to heav yrain or snow.
A warnin gtone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears. Al ldrivin gsystems and drivin gsafet ysystems
are operative again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XSwitchof fth eengine.
XClean th esensor sin th efollowing location s (Ypage 546):
Rin theradiato rtrim
Rin th efron tbumper
Rin th erear bumper, particularl yin th emiddle of th erear
bumper
XRestart th eengine.
The display message disappears.
A
Malfunction Ser ‐
viceRequired
The rol lbars are defective.
GWARNIN G
The rollbars will then possibl yno tbe extended in th eevent of an
accident.
There is an increase dris kof injury.
XVisit aqualified specialist workshop immediately.
248Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
b
RearFog Lam p
The rear fo glamp is faulty.
XVisit aqualified specialist workshop .
b
Check Front Left
Standing
LamporCheck Front
RightStandingLam p
The fron tlef tor fron tright parkin gor standin glamp is defective.
XVisit aqualified specialist workshop .
b
Backup Light
The backup lamp is defective.
XVisitaqualified specialist workshop .
b
CheckLeftDaytim e
Running
LightorChec kRight
Daytim eRunnin g
Light
The leftor right-hand daytime running lamp is faulty.
XVisit aqualified specialist workshop .
b
Active Headlamps
Inoperative
The active lightfunction is faulty.
XVisit aqualified specialist workshop .
b
Malfunction See
Operator'sManual
The exterio rlighting is defective.
XVisit aqualified specialist workshop .
b
AutoLampFunction
Inoperative
The ligh tsensor is defective.
XVisit aqualified specialist workshop .
b
Switch Off Lights
You leaveth evehicl eand th eligh tis still switched on . Awarnin g
tone also sounds.
XTur nth eligh tswitch to position Ã.
254Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Active LaneKeep‐
ing Assist Cur ‐
rentlyUnavailable
SeeOperator'sMan‐
ual
Active Lan eKeepin gAssis tis deactivated and temporarily inop-
erative .
Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty.
Rvisibility is impaire ddue to heav yrain ,snow or fog.
Rthere hav ebeen no lan emarking sfo ran extended period.
Rth elan emarking sare worn, dark or covered, e.g. by dir tor snow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Active Lan eKeepin gAssis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XClean th ewindshield.
Active Lan eKeep‐
ing Assist Inoper ‐
ative
Active LaneKeepin gAssis tis defective.
XVisit aqualified specialist workshop .
Active Blind Spot
Assist Currently
Unavailable See
Operator'sManual
Active Blind Spot Assis tis temporarily inoperative. Possibl ecau-
ses are:
Rth esensor sare dirty.
Rfunction is impaire ddue to heav yrain or snow.
Rth erada rsensor system is outside th eoperating temperature
range.
Rth erada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion sor other source sof electromagnetic radiation .
The yello w9 indicato rlamp salso ligh tup in th eexterio rmir -
rors.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Active Blind Spot Assis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XClean th esensor s (Ypage 546).
XRestart th eengine.
260Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
ParkAssistInoper ‐
ative
You hav ejus tcarrie dout alarg enumber of turning or parkin g
maneuvers .
Active Parking Assis twill become available again after approx -
imately te nminute s (
Ypage 202).
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSwitc hof fand restar tth eengine.
If th emultifunction display still shows th edisplay message :
XVisitaqualified specialist workshop .
PARKTRONICis defective.
XVisit aqualified specialist workshop .
ParkAssist Fin ‐
ished
The vehicleis parked. Awarnin gtone also sounds.
The display message disappear sautomatically.
DISTRONIC PLU SOffDISTRONIC PLU Shas been deactivated (Ypage 182).
If it was deactivated automatically, awarnin gtone also sounds.
DISTRONICPLU SNow
Available
DISTRONIC PLU Sis operational again after havin gbeen tempo -
rarily unavailable .You can no wreactivat eDISTRONIC PLU S
(
Ypage 182).
DISTRONICPLU SCur‐
rentlyUnavailable
SeeOperator' sMan‐
ual
DISTRONIC PLU Sis temporarily inoperative. Possibl ecauses are:
Rth erada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion sor other source sof electromagnetic radiation .
Rthesystem is outside th eoperating temperature range.
RThe on-boar dvoltag eis to olow.
A warnin gtone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
DISTRONIC PLU Sis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XRestart th eengine.
262Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
WarningTir eMal ‐
function
The tire pressur ein on eor mor etires has dropped suddenly. The
whee lposition is shown in th emultifunction display.
GWARNIN G
Drivingwit h a flat tire poses aris kof th efollowing hazards :
Raflat tire affects th eabilit yto steer or brak eth evehicle.
Ryou could los econtrol of th evehicle.
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-
up and possibl y afire.
There is aris kof an accident.
XStop th evehicl ewithout makin gany sudden steerin gor brakin g
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XCheckth etires and ,if necessary, follow th einstruction sfo r a
flat tire (
Ypage 550).
TirePress. Moni‐
tor Currently
Unavailable
Becaus ethere is interferenc efrom astron gsource of radi owaves,
no signal sfrom th etire pressur esensor sare detected. The tire
pressur emonitor is temporarily malfunctioning.
XDrive on .
The tire pressur emonitor restarts automatically as soo nas th e
problem has been resolved.
TirePress .Sen ‐
sor(s) Missin g
There is no signal from th etire pressur esensor of on eor several
wheels. The pressur eof th eaffecte dtire does no tappea rin th e
multifunction display.
XHav eth efault ytire pressur esensor replaced at aqualified spe -
cialist workshop .
TirePressure Mon ‐
itorInoperative
No Wheel Sensor s
The wheels mounted do no thav e a suitable tire pressur esensor .
The tire pressur emonitor is deactivated.
XMoun twheels wit hsuitable tire pressur esensors.
The tire pressur emonitor is activated automatically after drivin g
fo r a few minutes.
Tir ePress. Moni‐
tor Inoperative
The tire pressur emonitor is faulty.
XVisit aqualified specialist workshop .
Display messages265
On-board computer and displays
Z

Engine
ProblemPossible causes/consequences andMSolutions
;
The yellow Check
Engine warning lamp
lights up while the
engine is running.There may be a malfunction, for example:
Rin the engine management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system
Rin the fuel system
The emission limit values may be exceeded and the engine may be
in emergency mode.
XHave the vehicle checked as soon as possible at a qualified
specialist workshop.
iIn some states, you must immediately visit a qualified special-
ist workshop as soon as the yellow Check Engine warning lamp
lights up. This is due to the legal requirements in effect in these
states. If in doubt, check whether such legal regulations apply in the state in which you are currently driving.
8
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
8
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the ;
Check Engine warning
lamp may light up.The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
XIf the fuel filler cap is not correctly closed: close the fuel filler
cap.
XIf the fuel filler cap is closed: visit a qualified specialist work-
shop.
?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gage is at the
start of the scale.The temperature sensor for the coolant temperature gage is defec-
tive.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
XSecure the vehicle against rolling away (Ypage 171).
XConsult a qualified specialist workshop.
278Warning and indicator lamps
On-board computer and displays

Display settings
Setting th ebrightness
The brightness detecte dby th edisplay ligh t
sensor affects th esetting option sfo rthis
function .
XPressW.
XSelectSettingsby turnin gcVd the
COMAN Dcontroller and press Wto con-
firm.
XSelec tDispla yand press Wto confirm .
XSelectBrightnes sand pressWto con-
firm.
XAdjust th ebrightness by turnin gcVd the
COMAN Dcontroller and press Wto con-
firm.
Display design
Your COMAN Ddisplay feature soptimize d
design sfo roperation durin gdaytime and
night-time hours. You can customiz eth e
design by manually selecting day or night
design ,or opt fo ran automatic setting .
XPressW.
XSelectSettingsby turnin gcVd the
COMAN Dcontroller and press Wto con-
firm.
XSelec tDispla yand press Wto confirm .
XSelectDay Mod e,Night Mod eorAuto‐
maticby turnin gcVd theCOMAN Dcon-
trolle rand press Wto confirm .
A dot indicates th ecurren tsetting .
DesignExplanation
Day Mod eThe display is set perma-
nently to day design .
Night ModeThe display is set perma-
nently to night design .
AutomaticIf theAutomaticsetting
is selected, COMAN D
evaluates th ereadings
from th eautomatic vehi-
cl eligh tsensor and auto-
matically switches
between th edisplay
designs.
Time settings
General information
If COMAN Dis equipped wit h anavigation sys-
te m and has GPS reception ,COMAN Dauto-
matically set sth etime and date. You can
chang eth etime in minut eincrements. The
dat ecan also be changed.
iIf you adjust th etime in minut eincre-
ments ,any time zone setting sand setting s
fo rchangin gbetween summer and stand -
ard time are lost. Switchin gbetween sum -
mer and standard time (
Ypage 309).
iThe following navigation system function s
require th etime, time zone and summer /
standard time to be set correctl yin order to
wor kproperly:
Rrout eguidanc eon routes wit htime-
dependen ttraffic guidanc e
Rcalculation of expecte dtime of arrival
iWit hthis function ,you can set th etime fo r
every display in th evehicle.
Setting th etime/date forma t
XPress theW button.
XSelectTim eby turnin gcVd the COMAND
controller and press Wto confirm.
308System settings
COMAND

Cleaning the sensors
!If you clean the sensors with a power
washer, make sure that you keep a dis-
tance of at least 11.8 in (30 cm)betwee n
th evehicl e and the power washer nozzle.
Information about the correct distance is
available from the equipment manufac-
turer.
XClean sensors :of the driving systems
with water, car shampoo and a soft cloth.
Cleaning the rear view camera
!Do not clean the camera lens and the area
around the rear view camera with a power
washer.
XUse clear water and a soft cloth to clean
camera lens :.
Cleaning the exhaust pipe
GWARNING
The exhaust tail pipeand tail pipetrim can
become very hot. Ifyou come into contact
wit h these parts of the vehicle, you could burn
yourself. There isa risk of injury.
Always be particularly careful around the
exhaust tail pipeand the tail pipetrim. Allow
these components to cool downbefore touch-
ing them.
!Do not clean the exhaust pipe with acid-
based cleaning agents, such as bathroom
cleaner or wheel cleaner.
XClean the exhaust pipe with a chrome care
product tested and approved by Mercedes-
Benz.
Impurities combined with the effects of road
grit and corrosive environmental factors may
cause flash rust to form on the surface. You
can restore the original shine of the exhaust
pipe by cleaning it regularly, especially in win-
ter and after washing.
Interior care
Cleaning the display
!For cleaning, do not use any of the fol-
lowing:
Ralcohol-based thinner or gasoline
Rabrasive cleaning agents
Rcommercially-available household clean-
ing agents
These may damage the display surface. Do not put pressure on the display surface
when cleaning. This could lead to irrepara-
ble damage to the display.
546Care
Maintenance and care

Checking tire pressures manually
To determine and set the correct tire pres-
sure, proceed as follows:
XRemove the valve cap of the tire that is to
be checked.
XPress the tire pressure gauge securely onto
the valve.
XRead the tire pressure and compare it to
the recommended value on the Tire and
Loading Information placard or the tire
pressure table (
Ypage 571).
XIf the tire pressure is too low, increase the
tire pressure to the recommended value.
XIf the tire pressure is too high, release air.
To do so, press down the metal pin in the
valve, using the tip of a pen for example.
Then check the tire pressure again using
the tire pressure checker.
XScrew the valve cap onto the valve.
XRepeat these steps for the other tires.
Tire pressure monitor
General notes
If a tire pressure monitor is installed, the vehi-
cle's wheels have sensors that monitor the
tire pressures in all four tires. The tire pres-
sure monitor warns you if the pressure drops
in one or more of the tires. The tire pressure
monitor only functions if the corresponding
sensors are installed in all wheels.
Information on tire pressures is displayed in
the multifunction display. After a few minutes
of driving, the current tire pressure of each
tire is shown in the Serv.
menu of the multi-
function display.
Example :curren ttir epressur edisplay
For information on the message display, refer
to the "Checking the tire pressure electroni-
cally" section (
Ypage 577).
Important safety notes
GWARNING
Each tire, including the spare (if provided),
should be checked at least once a month
when cold and inflated to the pressure rec-
ommended by the vehicle manufacturer on
the Tire and Loading Information placard on
the driver's door B-pillar or the tire pressure
label on the inside of the fuel filler flap. If your
vehicle has tires of a different size than the
size indicated on the Tire and Loading Infor-
mation placard or the tire pressure label, you
should determine the proper tire pressure for
those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pres-
sure telltale when one or more of your tires
are significantly underinflated. Accordingly,
when the low tire pressure telltale illuminates,
you should stop and check your tires as soon
as possible, and inflate them to the proper
pressure. Driving on a significantly underin-
flated tire causes the tire to overheat and can lead to tire failure. Underinflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driv-
er's responsibility to maintain correct tire
pressure, even if unde rinf
lation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate if the
system is not operating properly. The TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the warning lamp will
flash for approximately a minute and then
Tire pressure575
Wheels and tires
Z