sensor MERCEDES-BENZ CLA 2018 Owner's Manual

Display messages
Possible causes/consequences and P Solutions
TirePress .S en ‐
sor(s) Missin g US Ao nl y:
There is no signal from th et ir ep ressur es ensor of on eors everal tires .
The pressur eoft he affecte dt ir ed oes no ta ppear in th em ultifunction
display. X
Hav et he fault yt ir ep ressur es ensor replace dataq ualified special -
ist workshop .
Tir eP ressure Moni‐
tor Inoperative No
Wheel Sensor s US Ao nl y:
The wheels mounte ddon ot hav eas uitable tire pressur es ensor .T he
tire pressur em onitor is deactivated.X
Moun tw heels wit hs uitable tire pressur es ensors.
The tire pressur em onitor is activated automatically after drivin gf or
af ew minutes.
Tir e Press. Monito r
Inoperative US Ao nl y:
The tire pressur em onitor is faulty.X
Visit aq ualified specialist workshop .
Vehicle Display messages
Possible causes/consequences and P Solutions
Depres sB rake to
Start Engine You hav ea ttempte dtos ta rt th ee ng in ew it ht he transmission in posi-
tion N without depressing th eb rak ep edal .X
Depress th eb rak ep edal .
To Deselect P or N,
Depres sB rake and
Start Engine You hav ea ttempte dtos hift th et ra nsmission to position R or D with-
out starting th ee ng ine.X
Start th ee ng ine.X
Depress th eb rak ep edal .
i It is only possibl etos hift th et ra nsmission from position P to th e
desire dp osition if you depress th eb rak ep edal .O nl yt he nc an th e
parking loc kbed eactivated. If you do no td epress th eb rak ep edal ,
th eD IR ECT SELECT lever can still be moved but th ep arking loc k
remain se ng aged.
i At transmission fluid temperatures belo w

Cleaning wiper blades
G WARNING
You coul db ecome trapped by th ew indshield
wiper sift he ys ta rt moving while cleanin gt he
windshield or wiper blades .T her eisar is ko f
injury.
Always switch off th ew indshield wiper sa nd
th ei gnition before cleanin gt he windshield or
wiper blades.
! Only fold th ew indshield wiper sa way from
th ew indshield when vertical. Otherwise, you
will damag et he hood.
! Do no tp ull th ew iper blade. Otherwise, the
wiper blade coul dbed amaged.
! Do no tc lean wiper blades to oo ften and do
no tr ub them to oh ard .O th erwise, th eg raph-
ite coatin gc oul dbed amaged. This could
caus ew iper noise.
! Hol dt he wiper arm securely when folding
back .T he windshield coul dbed amaged if the
wiper arm smacks against it suddenly. X
Fol dt he windshield wiper arm sa way from the
windshield. X
Carefully clean th ew iper blades wit had amp
cloth. X
Fol dt he windshield wiper arm sb ack again
before switching on th ei gnition.
Cleaning th ee xterior lighting
! Only use cleanin ga gents or cleanin gc loths
whic ha re suitable for plastic light lenses.
Unsuitable cleanin ga gents or cleanin gc loths
coul ds cr atch or damag et he plastic light len-
ses. X
Clean th ep lastic lenses of th ee xteri or lights
wit haw et sponge and am ild cleanin ga gent,
e.g .M ercedes-Ben zc ar shampoo or cleaning
cloths.
Cleaning th em irror turn signals
! Only use cleanin ga gents or cleanin gc loths
that are suitable for plastic lenses .U ns uitable
cleanin ga gents or cleanin gc loth sc ould
scratch or damag et he plastic lenses of the
mirror tur ns ignals. X
Clean th ep lastic lenses of th em irror tur ns ig-
nals in th ee xteri or mirror housing usin gaw et
sponge and mild cleanin ga gent, e.g.
Mercedes-Ben zc ar shampoo or cleaning
cloths.
Cleaning th es ensors
! If you clean th es ensor sw it hap ower
washer, mak es ure that you keep ad istance
of at least 11.8 in (30 cm )b etween the vehicl e
and th ep ower washer nozzle. Information
about th ec orrec td istanc eisa vailabl ef ro m
th ee quipment manufacturer.
X
Clean sensors C of th ed riving systems with
water, car shampoo and as of tc loth.
Cleaning th er ea rv iew camera
! Do no tc lean th ec amera len sa nd th ea rea
aroun dt he rear view camera with ap ower
washer. Care 265
Maintenance and care Z

'OK' to Restart message in the multifunction
displa yint he Serv. menu. Information on the
message displa yc an be found in the "Restarting
the tire pressure loss warning" section
( Y
page 294).
Important safety notes The tire pressure warning system does not warn
you of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
( Y
page 290).
The tire pressure loss warning does not replace
the need to regularly check the tire pressure. An
even loss of pressure on several tires at the
same time cannot be detected by the tire pres-
sure loss warning system.
The tire pressure monitor is not able to warn you
of as udden loss of pressure, e.g. if the tire is
penetrated by af oreign object. In the event of a
sudden loss of pressure, bring the vehicle to a
halt by braking carefully .A void abrupt steering
movements.
The function of the tire pressure loss warning
system is limited or delayed if: R
snow chains are mounted on your vehicle's
tires. R
road conditions are wintry. R
you are driving on sand or gravel. R
you adopt av ery sporty driving style (corner-
ing at high speeds or driving with high rates of
acceleration). R
you are driving with ah eavy load (in the vehi-
cle or on the roof)
Restarting the tire pressure loss warn-
ing system Restart the tire pressure loss warning system if
you have: R
changed the tire pressure R
changed the wheels or tires R
mounted new wheels or tires X
Before restarting, make sure that the tire
pressures are set properly on all four tires for
the respective operating conditions.
The recommended tire pressure can be found
on the Tire and Loading Information placard
on the B-pillar. Additionally ,at ire pressure
table is attached to the fuel filler flap. The tire
pressure loss warning system can only give
reliable warnings if you have set the correct tire pressure. If an incorrect tire pressure is
set, these incorrect value sw ill be monitored.X
Also observe the notes in the section on tire
pressures ( Y
page 290). X
Make sure that the SmartKey is in position H
in the ignition lock ( Y
page 122).X
Press Y or e on the steering wheel to
select the Serv. menu.X
Press the c or d button to select
Tire Pressure . X
Press the v button.
The Run Flat Indicator Active Press
'OK' to Restart message appears in the
multifunction display.
If you wish to confirm the restart: X
Press the v button.
The Tire Pressure Now OK? message
appears in the multifunction display. X
Press the c or d button to select Yes .X
Press the v button.
The Run Flat Indicator Restarted mes-
sage appears in the multifunction display.
After at each-in period, the tire pressure loss
warning system will monitor the set tire pres-
sures of all four tires.
If you wish to cance lt he restart:X
Press the 8 button.
or X
If the Tire Pressure Now OK? message
appears, press the c or d button to
select Cancel . X
Press the v button.
The tire pressure value ss tored at the last
restart will continue to be monitored.
Tire pressure monitor (Canada only)
General notes If at ire pressure monitor is installed, the vehi-
cle's wheels have sensors that monitor the tire
pressures in all four tires. The tire pressure mon-
itor 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 af ew minutes of
driving, the current tire pressure of each tire is294
Tire pressure
Wheels and tires

The tire pressure monitor has ay ellow warning
lamp in the instrument cluster for indicating
pressure loss or am alfunction. Whether the
warning lamp flashes or lights up indicates
whether at ire pressure is too low or the tire
pressure monitor is malfunctioning: R
if the warning lamp is lit continuously, the tire
pressure on one or more tires is significantly
too low. The tire pressure monitor is not mal-
functioning. R
if the warning lamp flashes for around a
minute and then remains lit constantly, the
tire pressure monitor is malfunctioning.
In addition to the warning lamp, am essage
appears in the multifunction display .O bserve
the information on display messages
( Y
page 211).
It may take up to ten minutes for am alfunction
of the tire pressure monitor to be indicated. A
malfunction will be indicated by the tire pres-
sure warning lamp flashing for approximately
one minute and then remaining lit. When the
malfunction has been rectified, the tire pressure
warning lamp goes out after af ew minutes of
driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at ag as station with ap ressure gauge. The
tire pressures shown by the on-board computer
refer to those measured at sea level. At high
altitudes, the tire pressure values indicated by a
pressure gauge are higher than those shown by
the on-board computer. In this case, do not
reduce the tire pressures.
The operation of the tire pressure monitor can
be affected by interferenc ef rom radio transmit-
ting equipment (e.g. radio headphones, two-way
radios) that may be being operated in or near the
vehicle.
Checking the tire pressur ee lectroni-
cally X
Make sure that the SmartKey is in position H
in the ignition lock ( Y
page 122).X
Press Y or e on the steerin gw heel to
select the Serv. menu.X
Press the c or d button to select
Tire Pressure .X
Press the v button.
The current tire pressure of each tire is shown
in the multifunction display. If the vehicle was parked for longer than
20 minutes, the Tire pressure will be
displayed after driving af ew minutes
message is shown.
After at each-in process, the tire pressure mon-
itor automatically detect sn ew wheels or new
sensors. As long as ac lear allocation of the tire
pressure value to the individual wheels is not
possible, the Tire Pressure Monitor Active
message is shown instead of the tire pressure
display .T he tire pressures are already being
monitored.
If an emergenc ys pare wheel is mounted, the
system may continue to show the tire pressure
of the wheel that has been removed for af ew
minutes. If this occurs, not et hat the value dis-
played for the position where the spare wheel is
mounted is not the same as the current tire
pressure of the emergenc ys pare wheel.
Tire pressur em onitor warning mes-
sages If the tire pressure monitor detect sap ressure
loss in one or more tires, aw arning message is
shown in the multifunction display .T he yellow
tire pressure warning lamp then lights up. R
If the Please Correct Tire Pressure
message appears in the multifunction display,
the tire pressure in at least one tire is too low.
The tire pressure must be corrected when the
opportunit ya rises. R
If the Check Tire Pressure message
appears in the multifunction display ,t he tire
pressure in one or more tires has dropped
significantly. The tires must be checked. R
If the Tire Pressure Warning Tire Fail‐
ure message appears, the tire pressure in one
or more tires has dropped suddenly. The tires
must be checked.
Observe the instructions and safety notes in the
display messages in the "Tires" section
( Y
page 211).
If the wheel positions on the vehicle are rotated,
the tire pressures may be displayed for the
wrong positions for as hort time. This is rectified
after af ew minutes of driving, and the tire pres-
sures are displayed for the correc tp ositions.296
Tir ep re ssure
Wheels and tires