tire pressure MERCEDES-BENZ CLS 2016 User Guide

Tires Display messages
Possible causes/consequences and P Solutions
Check
Tire Pressure Soon 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 installed
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 146).X
Check the tires and, if necessary, follow the instructions for a flat
tire ( Y
page 287). X
Check the tire pressures and, if necessary, correct the tire pressure. X
Restart the tire pressure loss warning system when the tire pres-
sure is correct ( Y
page 308).
Check Tire Pressure
Then Restart Run
Flat Indicator The tire pressure loss warning system generated a display message
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 308).
Run Flat Indicator
Inoperative The tire pressure loss warning system is faulty. X
Visit a qualified specialist workshop.
Correct
Tire Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great. X
Check the tire pressures at the next opportunity ( Y
page 308).X
If necessary, correct the tire pressure. X
Restart the tire pressure monitor ( Y
page 311).230
Displa y messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Check
Tires The tire pressur e in on e or mor e tires has dropped significantly. The
whee l position is shown in th e multifunction display.
A warning tone also sounds.
G WARNIN G
Tir e pressures that are to o low pos e th e followin g 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 steering and braking , may be
greatl y impaired.
There is a ris k of an accident.X
Stop th e vehicl e without making any sudden steering or braking
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 146).X
Chec k th e tires and , if necessary, follow th e instruction s for a flat
tire ( Y
page 287). X
Chec k th e tire pressur e ( Y
page 308).X
If necessary, correc t th e tire pressure.
Warnin g
Tir e Malfunction The tire pressur e in on e or mor e tires has dropped suddenly. The whee l
position is shown in th e multifunction display.
G WARNIN G
Drivin g wit h a flat tire poses a ris k of th e followin g hazards :R
a flat tire affects th e abilit y to steer or brak e th e vehicle.R
you could lose control of th e vehicle.R
continued drivin g wit h a flat tire will caus e excessive heat build-up
and possibl y a fire.
There is a ris k of an accident.X
Stop th e vehicl e without making any sudden steering or braking
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 146).X
Chec k th e tires and , if necessary, follow th e instruction s for a flat
tire ( Y
page 287).
Tir e Press. Monito r
Currently Unavaila‐
ble Becaus e there is interferenc e from a stron g source of radi o waves, no
signals from th e tire pressur e sensor s are detected. The tire pressur e
monitor is temporarily malfunctioning .X
Drive on .
The tire pressur e monitor restarts automatically as soo n as th e
problem has been resolved.
TirePress . Sen ‐
sor(s) Missin g There is no signal from th e tire pressur e sensor of on e or several
wheels. The pressur e of th e affecte d tire does no t appear in th e mul-
tifunction display. X
Hav e th e fault y tire pressur e sensor replace d at a qualified special -
ist workshop . Display messages 23 1
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Tir e Pressure Moni‐
tor Inoperative No
Wheel Sensor s The wheels mounte d do no t hav e a suitable tire pressur e sensor . The
tire pressur e monitor is deactivated.X
Moun t wheels wit h suitable tire pressur e sensors.
The tire pressur e monitor is activated automatically after drivin g for
a few minutes.
Tir e Press. Monito r
Inoperative The tire pressur e monitor is faulty.X
Visit a qualified specialist workshop .
Vehicle Display messages
Possible causes/consequences and P Solutions
Shift to 'P' or 'N'
to Start Engine : You hav e attempte d to start th e engin e wit h th e transmission in posi-
tion R or D . X
Shift th e transmission to position P or N .
To Shift fro m 'P'
Apply Brake You hav e attempte d to mov e th e transmission selector lever to posi-
tion D , R or N without depressing th e brak e pedal .X
Depress th e brak e pedal .
To Deselect P or N,
Depres s Brake and
Start Engine Wit h th e engin e switched off , you hav e attempte d to shift th e trans -
mission out of position P or N int o another transmission position .X
Depress th e brak e pedal .X
Start th e engine.
Ris k of Rollin g Awa y
Vehicl e Not in 'P' The driver's door is open or no t full y closed and th e transmission is in
position R , N or D .
A warning tone also sounds.
G WARNIN G
The vehicl e may rol l away.
There is a ris k of an accident.X
Shift th e transmission to position P .X
Secur e th e vehicl e against rollin g away ( Y
page 146).X
Clos e th e driver's door completely.
Onl y Shift
to 'P' whe n Vehicl e
is Stationar y The vehicl e is moving .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
Shift th e transmission to position P .232
Display messages
On-board computer and displays

Tires Warning/
indicator
lamp Q Signal type
Possible causes/consequences and P Solutions
w
Q The yellow combination low tire pressure telltale/TPMS malfunction telltale for
the TPMS (pressure loss or 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 trac-
tion. 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 146).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 287). X
Check the tire pressure ( Y
page 308).X
If necessary, correct the tire pressure.
w
Q 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.244
Warning and indicator lamps in the instrument cluster
On-board computer and displays

i Example: equipment and country-specific
variations possible.
Vehicles with alloy wheels and hub caps On vehicles with alloy wheels and hub caps, a
socket is also provided.
Flat tire
Preparing the vehicle Your vehicle may be equipped with: R
MOExtended tires (tires with run-flat proper-
ties) ( Y
page 287)
Vehicle preparation is not necessary on vehi-
cles with MOExtended tires R
a TIREFIT kit ( Y
page 286)R
an emergency spare wheel ( Y
page 326)
Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory. It
is therefore recommended that you additionally
equip your vehicle with a TIREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. A TIREFIT kit may be obtained from
a qualified specialist workshop.
Information on changing and mounting wheels
( Y
page 320). X
Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic. X
Switch on the hazard warning lamps. X
Secure the vehicle against rolling away
( Y
page 146). X
If possible, bring the front wheels into the
straight-ahead position. X
Vehicles with AIRMATIC: make sure that "nor-
mal" level is selected ( Y
page 166).X
Switch off the engine. X
Remove the SmartKey from the ignition lock.
or, on vehicles with KEYLESS ‑ GO:X
Open the driver's door.
T he on-board electronics now have status 0 .
This is the same as the SmartKey having been
removed. X
Remove the Start/Stop button from the igni-
tion lock ( Y
page 127).X
Make sure that the passengers are not endan-
gered as they do so. Make sure that no one is
near the danger area while a wheel is being changed. Anyone who is not directly assisting
in the wheel change should, for example,
stand behind the barrier. X
Get out of the vehicle. Pay attention to traffic
conditions when doing so. X
Close the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive your vehi-
cle even if there is a total loss of pressure in one
or more tires. The affected tire must not show
any clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-bear-
ing capacity and the speed index ( Y
page 315).
MOExtended tires may only be used in conjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor.
If a pressure loss warning message appears
in the multifunction display: R
observe the instructions in the display mes-
sages ( Y
page 230). R
check the tire for damage. R
if driving on, observe the following notes.
The driving distance possible in run-flat mode is
approximately 50 miles (80 km) when the vehi-
cle is partially laden. When the vehicle is fully
laden it is approximately 19 miles (30 km).
In addition to the vehicle load, the driving dis-
tance possible depends upon: R
vehicle speed R
road condition R
outside temperature
The driving distance p ossible in run-flat mode
may be reduced by extreme driving conditions
or maneuvers, or it can be increased through a
moderate style of driving.
The driving distance possible in run-flat mode is
counted from the moment the tire pressure loss
warning appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h). Flat tire 287
Breakdown assistance

Tire pressure not reached If a pressure of 180 kPa (1.8 bar/26 psi) has not
been attained after five minutes: X
Switch off the tire inflation compressor. X
Unscrew the filler hose from the valve of the
faulty tire.
Note that tire sealant may escape when you
unscrew the filler hose. X
Very slowly drive forwards or reverse approx-
imately 30 ft (10 m). X
Pump up the tire again.
After a maximum of five minutes the tire pres-
sure must be at least 180 kPa (1.8 bar/
26 psi).
G WARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and a tire
pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tire pressure reached
G WARNING
A tire temporarily sealed with tire sealant
impairs the driving characteristics and is not
suitable for higher speeds. There is a risk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed
the specified maximum speed with a tire that
has been repaired using tire sealant.
The maximum speed for a tire sealed with tire
sealant is 50 mph (80 km/h). The upper part of
the TIREFIT sticker must be affixed to the instru-
ment cluster in the driver's field of vision.
! After use, excess tire sealant may run out of
the filler hose. This could cause stains.
Therefore, place the tire sealant bottle with
filler hose in the plastic bag which is con-
tained in the TIREFIT kit. H Environmental note
Have the used tire sealant bottle disposed of
professionally, e.g. at a qualified specialist
workshop.
If a tire pressure of 180 kPa (1.8 ba r/ 26 psi) has
been attained after five minutes: X
Switch off the tire inflation compressor. X
Unscrew the filler hose from the valve of the
faulty tire. X
Stow the tire sealant bottle and the tire infla-
tion compressor. X
Pull away immediately .X
Stop after driving for approximately ten
minutes and check the tire pressure with the
tire inflation compressor.
The tire pressure must now be at least
130 kPa (1.3 bar/19 psi).
G WARNING
If the required tire pressure is not reached
after driving for a short period, the tire is too
badly damaged. The tire sealant cannot repair
the tire in this instance. Damaged tires and a
tire pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
i In cases such as the one mentioned above,
contact an authorized Mercedes-Benz Cen-
ter. Or call 1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada). X
Correct the tire pressure if it is still at least
130 kPa (1.3 bar/19 psi). See the Tire and
Loading Information placard on the driver's
side B-pillar or the tire pressure table in the
fuel filler flap for values. X
To increase the tire pressure: switch on the
tire inflation compressor.290
Flat tire
Breakdown assistance

X
To reduce the tire pressure: depress pres-
sure release button m next to pressure gauge
n . X
When the tire pressure is correct, unscrew the
filler hose from the valve of the sealed tire. X
Screw the valve cap onto the tire valve of the
sealed tire. X
Pull the tire sealant bottle out of the tire infla-
tion compressor.
The filler hose remains attached to the tire
sealant bottle. X
Drive to the nearest qualified specialist work-
shop and have the tire changed there. X
Have the tire sealant bottle and the filler hose
replaced as soon as possible at a qualified
specialist workshop. X
Have the tire sealant bottle replaced every
four years at a qualified specialist workshop.
Battery (vehicle)
Important safety notes Special tools and expert knowledge are required
when working on the battery, e.g. removal and
installation. You should therefore have all work
involving the battery carried out at a qualified
specialist workshop.
G WARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can
lead to function restrictions applying to
safety-relevant systems, e.g the lighting sys-
tem, the ABS (anti-lock braking system) or the
ESP ®
(Electronic Stability Program). The oper-
ating safety of your vehicle may be restricted. You could lose control of the vehicle, for
example: R
when braking R
in the event of abrupt steering maneuvers
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar inci-
dent, contact a qualified specialist workshop
immediately. Do not drive any further. You
should have all work involving the battery car-
ried out at a qualified specialist workshop.
For further information about ABS ( Y
page 64)
and ESP ®
( Y
page 69).
G WARNING
Electrostatic build-up can lead to the creation
of sparks, which could ignite the highly explo-
sive gases of a battery. There is a risk of an
explosion.
Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-start-
ing.
Always make sure that neither you nor the bat-
tery is electrostatically charged. A build-up of
electrostatic charge can be caused, for exam-
ple: R
by wearing clothing made from synthetic
fibers R
due to friction between clothing and seats R
if you push or pull the battery across the car-
pet or other synthetic materials R
if you wipe the battery with a cloth
G WARNING
During the charging process, a battery produ-
ces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion.Battery (vehicle) 291
Breakdo wn assis tance Z

Important safety notes
G WARNIN G
If wheels and tires of th e wrong siz e are used,
th e whee l brakes or suspension component s
may be damaged. Ther e is a ris k of an acci-
dent.
Always replace wheels and tires wit h those
that fulfill th e specification s of th e original
part .
When replacing wheels, mak e sur e to use th e
correct: R
designation R
model
When replacing tires , mak e sur e to use th e
correct: R
designation R
manufacturer R
model
G WARNIN G
A flat tire severely impairs th e driving , steer -
ing and braking characteristics of th e vehicle.
Ther e is a ris k of accident.
Tires without run-flat characteristics :R
do no t driv e wit h a flat tire.R
immediately replace th e flat tire wit h your
emergenc y spar e whee l or spar e wheel, or
consult a qualified specialist workshop.
Tires wit h run-flat characteristics :R
pay attention to th e information and warn -
ing notice s on MOExtended tires (tire s wit h
run-flat characteristics).
Accessories that are no t approve d for your vehi-
cle by Mercedes-Ben z or are no t bein g used cor-
rectl y can impair th e operating safety.
Before purchasing and usin g non-approve d
accessories, visit a qualified specialist work-
sho p and ask about :R
suitabilit yR
legal stipulation sR
factory recommendation s Further information regarding wheels and tires
can be foun d under "Wheel/tire combinations"
( Y
page 325).
You can ask for information regarding permitte d
wheel-tire combination s at an authorize d
Mercedes-Ben z Center.
Information on tire pressur e can be found:R
on th e Tir e and Loading Information placard
on th e B-pillar on th e driver' s side
( Y
page 311) R
in th e tire pressur e table in th e fuel filler flap
( Y
page 144) R
under "Tir e pressure" ( Y
page 304)
Operation
Information on driving Chec k th e tire pressur e when th e vehicl e is
heavily laden and adjust prio r to a trip.
While driving , pay attention to vibrations, noises
and unusual handlin g characteristics , e.g. pull-
ing to on e side . This may indicat e that th e
wheels or tires are damaged. If you suspec t that
a tire is defective, reduce your spee d immedi-
ately. Stop th e vehicl e as soo n as possible to
chec k th e wheels and tires for damage. Hidden
tire damag e could also be causing th e unusual
handlin g characteristics . If you fin d no sign s of
damage, hav e th e tires and wheels checke d at a
qualified specialist workshop.
When parking your vehicle, mak e sur e that th e
tires do no t get deformed by th e cur b or other
obstacles. If they canno t be avoided, driv e ove r
obstacles suc h as curbs slowly and at an obtuse
angle. Otherwise, you may damag e th e wheels
or tires .
Regular checking of wheels and tires
G WARNIN G
Damaged tires can caus e tire inflation pres-
sur e loss . As a result , you could lose control of
your vehicle. Ther e is a ris k of accident.
Chec k th e tires regularly for sign s of damag e
and replace any damaged tires immediately. Operation 301
Wheels and tires Z

Check wheels and tires for damage at least once
a month. Check wheels and tires after driv ing
off-road or on rough roads. Damaged wheels
can cause a loss of tire pressure. Pay particular
attention to damage such as: R
cuts in the tiresR
punctures R
tears in the tiresR
bulges on tires R
deformation or severe corrosion on wheels
Regular ly check the tire tread dept h and the
condition of the tread across the whole widt h of
the tire ( Y
page 302). If necessary, turn the
front wheels to full lock in order to inspect the
inner side of the tire surface.
All wheels must have a valve cap to protect the
valve against dirt and moisture. Do not mount
anything onto the valve other than the standard
valve cap or other valve caps approved by
Mercedes-Benz for your veh icle . Do not use any
other valve caps or systems, e.g. tire pressure
monitoring systems.
Regular ly check the pressure of all the tires par-
ticularly prio r to long tr ips. Adjust the tire pres-
sure as necessary ( Y
page 304).
Observe the notes on the emergency spare
wheel ( Y
page 326).
The service life of tires depends, among other
things, on the foll owin g factors:R
driv ing styleR
tire pressure R
dist ance covered
Notes on tire tread
G WAR NING
In suff icie nt tire tread will reduce tire traction.
The tire is no longer able to dissipat e water.
This means that on wet road surfaces, the risk
of hydroplaning increases, in particular where
speed is not adapted to suit the driv ing con-
dit ions. There is a risk of acc iden t.
If the tire pressure is too high or too low, tires
may ex hibit diff erent leve ls of wear at diff er-
ent locations on the tire tread. Thus, you
should regularly check the tread dept h and
the condition of the tread across the entire
widt h of all tires. Minimum tire tread depth for: R
Summer tires:

MOExtended tires (tires with run-flat
properties) With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive your vehi-
cle even if there is a total loss of pressure in one
or more tires.
MOExtended tires may only be used in conjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor
and on wheels specifically tested by Mercedes-
Benz.
Notes on driving with MOExtended tires with a
flat tire ( Y
page 287).
Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory. It
is therefore recommended that you additionally
equip your vehicle with a TIREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. A TIREFIT kit can be obtained from
a qualified specialist workshop.
Winter operation
General notes Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section ( Y
page 320).
Driving with summer tires At temperatures below 45 ‡ (+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on your vehicle
to M+S tires. Using summer tires at very cold
temperatures could cause cracks to form,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility for
this type of damage.
G WARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control of
your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately. M+S tires
G WARNING
M+S tires with a tire tread depth of less than