light MERCEDES-BENZ C-CLASS COUPE 2015 Owners Manual

If you wish to cancel th
erestart:
X Press the %button.
or X If the Tyrep ressure now OK?
Tyr ep ressure now OK? message
appears, press 9or: to select Can‐
Can‐
cel
cel .
X Press ato confirm.
The tyr epressure values store datthelast
restar twill continue to be monitored. Tyre pressure monitor
General notes If
at yrep ressure monito rsystem is fitted, the
vehicle's wheels have sensor sfitte dthatm oni-
to rt he tyrep ressure sinall four tyres. The tyre
pressure monito rwarn syou if th epressure
drops in on eormoreoft hetyres. The tyr epres-
sure monito ronlyf unction sifthecorresponding
sensor sare fitte dtoall wheels.
Information on tyr epressure sisshown in the
multifunction display. Afte rafew minute sof
driving ,the curren ttyrep ressure of each tyr eis
shown in the Service
Service menuoft hemultifunction
display; see illustration (example). For further informatio
nondisplaying this mes-
sage, refer to th e"Checkin gthe tyrep ressure
electronically" sectio n(Ypage 360).
Important safety notes It is th
edriver' sresponsibility to set th etyre
pressure to th erecommended col dtyrep res-
sure suitable for th eoperatin gsituation
(Y page 356). Not ethatthe correc ttyrep res-
sure for th ecurren toperatin gsituatio nmust
first be taught-in to th etyrep ressure monitor. If
there is asubstantial loss of pressure ,the warn-
ing threshold for th ewarning message is aligned to th
ereferenc evalues taught-in .Restart the
tyr ep ressure monito rafter adjusting to th ecold
tyr ep ressure (Y page 360). The curren tpres-
sure sare save dasnew reference values. This
will ensure that awarning message will only
appear if th etyrep ressure drops significantly.
The tyr epressure monito rdoes no twarn you of
an incorrectly set tyr epressure .Observ ethe
note sont herecommended tyr epressure
(Y page 356).
The tyr epressure monito risnotable to warn
you of asudde nloss of pressure ,e.g.ift hetyre
is penetrated by aforeign object .Intheevent of
as udde nloss of pressure ,brin gthe vehicle to a
halt by braking carefully. Avoid abrupt steering
manoeuvres.
The tyr epressure monito rhas ay ellow warning
lamp in th einstrumen tcluste rfor indicating a
pressure loss or malfunction. Dependin gonhow
th ew arning lamp flashes or light sup,at yre
pressure that is to olow or amalfunctio ninthe
tyr ep ressure monito risindicated:
R if th ewarning lamp is lit continuously, th etyre
pressure on on eormoret yres is significantly
to ol ow. The tyr epressure monito risnotmal-
functioning.
R if th ewarning lamp flashes for aroun da
minute and then remains lit constantly, the
tyr ep ressure monito rismalfunctioning.
In addition to th ewarning lamp, amessage
appear sinthemultifunction display. Observe
th ei nformatio nondisplay messages
(Y page 277).
It may tak euptotenminute sfor am alfunction
of th etyrep ressure monito rtobeindicated. A
malfunctio nwill be indicated by th etyrep res-
sure warning lamp flashin gfor approximately
on em inute and then remaining lit .When the
fault has been rectified, th etyrep ressure warn-
ing lamp goes out after you have driven for afew
minutes.
The tyr epressure values indicated by th eon-
boar dcomputer may differ from those meas-
ured at afilling statio nusingap ressure gauge.
The tyr epressure sshown by th eon-board com-
puter refer to those measured at sea level. At
high altitudes, th etyrep ressure values indica-
te dbyap ressure gauge are higher than those
shown by th eon-board computer. In this case,
do no treduc ethe tyrep ressures.
The operatio nofthetyrep ressure monito rcan
be affected by interferenc efromr adio transmit-
tin ge quipmen t(e.g. radio headphones, two-way Tyre pressure
359Wheels and tyres Z

radios) that may be being operated in or near the
vehicle.
Checking the tyre pressure electroni-
cally X
Make sure that the key is in position 2in the
ignitio nlock (Y page145).
X Press òon the steering whee ltocall up
the menu list.
X Press 9or: on the steering whee lto
select the Service
Servicemenu.
X Confirm by pressing aon the steering
wheel.
X Select Tyre pressure
Tyre pressure with9 or:.
X Press ato confirm.
The multifunction display shows the current
tyre pressure of each wheel.
If the vehicl ewas parked for longer than
20 minutes ,the following message appears:
Tyre pressure swill be displayed
Tyre pressure swill be displayed
after afew minutes of driving
after afew minutes of driving.
After ateach-in period, the tyre pressure moni-
tor automatically detects new wheels or new
sensors. As long as acleara llocation of the tyre
pressure values to the individualw heels is not
possible, the Tyre Tyrepressure
pressure monitor
monitoractive
active
message is shown instead of the tyre pressure
display.T he tyre pressures are already being
monitored.
If an emergency spare whee lisfitted, for afew
minutes the system may continue to show the
tyre pressure of the whee lthat has been
removed .Ifthis occurs, note that the valu edis-
played for the position where the spare whee lis
fitted is not the same as the current tyre pres-
sure of the emergency spare wheel.
Warning message softhe tyre pressure
monitor If the tyre pressure monitor detects
apressure
loss in one or more tyres, awarning message is
shown in the multifunction display.T he yellow
tyre pressure warning lamp then lights up.
R If the Please correct tyre pressure
Please correct tyre pressure
message appears in the multifunction display,
the tyre pressure in at least one tyre is too
low.T he tyre pressure must be corrected
when the opportunity arises.
R If the Check Check tyre(s)
tyre(s) message appears in the
multifunction display,t he tyre pressure in at least one tyre has dropped significantly. The
tyres must be checked.
R If the Warning tyre defect Warning tyre defect message
appears in the multifunction display,t he tyre
pressure in at least one tyre has dropped sud- denly .The tyres must be checked.
Observe the instructions and safety notes in the display messages in the "Tyres" section
(Y page2 77).
If the whee lpositions on the vehicl eare inter-
changed ,the tyre pressures may be displayed
for the wrong positions for ashort time. After a
few minutes of driving, this is rectified and the
tyre pressures are displayed for the correct
positions.
Restarting the tyre pressure monitor When you restart the tyre pressure monitor, all
existing warning messages are deleted and the
warning lamp sgoout. The monitor uses the cur-
rently set tyre pressures as the reference values
for monitoring. In most cases, the tyre pressure monitor willa utomatically detect the new refer-
ence values after you have changed the tyre
pressure. However, you can alsos et reference
values manually as described here. The tyre
pressure monitor then monitors the new tyre
pressure values.
X Use the table on the insid eofthe fuel filler flap
to ensure that the tyre pressure is set cor-
rectly in all four tyres for the current operating
conditions.
Also observe the notes in the section on tyre
pressures (Y page356).
X Make sure that the key is in position 2in the
ignitio nlock (Y page145).
X Press òon the steering whee ltocall up
the menu list.
X Press 9or: on the steering whee lto
select the Service Servicemenu.
X Confirm by pressing aon the steering
wheel.
X Select Tyre pressure
Tyre pressure with9 or:.
X Press ato confirm.
The multifunction display shows the current
tyre pressure of each whee lortheTyre Tyre 360
Tyre pressureWheels and tyres

must be positioned vertically, directly under
the jacking point of the vehicle.
Observe the following when raising the vehi- cle:
R only use the vehicle-specifi cjack that has
been tested and approved by Mercedes-Benz
to rais ethe vehicle. If the jack is used incor-
rectly, it could tip over while the vehicl eis
raised.
R the jack is designed only to rais eand hold the
vehicl efor as hort time while awhee lisb eing
changed. It is not permissibl etouse it to per-
form maintenance work under the vehicle.
R avoi dchanging the whee lonuphill and down-
hill slopes.
R before raising the vehicle, safeguard it from
rolling awaybya pplying the parking brake and
positioning whee lchocks. Do not release the
parking brake while the vehicl eisraised.
R the jack must be placed on afirm, flat and
non-slip surface. On aloose surface, alarge,
flat load-bearing underlay must be used .Ona
slippery surface, anon-slip underlay must be
used ,e.g. rubber mats.
R do not use wooden blocks or similar objects
as ajack underlay.O therwise, the jack willn ot
be abletoa chieve its load-bearing capacity
due to the restricted height.
R make sure that the distance betwee nthe
underside of the tyres and the ground does
not exceed 3cm.
R never place yourh ands or feet under the
raised vehicle.
R do not lie under the vehicle.
R do not start the engine when the vehicl eis
raised.
R do not open or close adoor or the boot lid
when the vehicl eisraised.
R make sure that no persons are present in the
vehicl ewhen the vehicl eisraised.
Vehicles with light-alloy wheels and hub
caps: the whee lbolts are covered by ahub cap.
Before you can unscrew the whee lbolts, you
must remove the hub cap. Two different variants
can be fitted. Vehicles with plastic hub cap:
X To remove: turn the centre cover of hub
cap :anti-clockwis eand remove.
X To fit: before fitting, ensure that hub cap :is
in the open position. To do this, turn the
centre cover anti-clockwise.
X Position hub cap :and turn the centre cover
clockwise until hub cap :engage sphysically
and audibly.
X Make sure that hub cap :is fitted securely. Vehicles with aluminium hub cap:
X To remove: take socket;and whee lwrench
= from the vehicl etool kit (Y page 336).
X Position socket ;on hub cap :.
X Position whee lwrench =on socket ;.
X Using whee lwrench =,turn hub cap :anti-
clockwise and remove it.
X To fit: before fitting, check hub cap :and
the whee larea for dirt and clean if necessary.
X Put hub cap :in position and turn until it is in
the right position.
X Position socket ;on hub cap :.
X Attach whee lwrench =to socket ;and
tighten hub cap :.
The tightening torque must be 25 Nm. Changing
awheel
363Wheelsa nd tyres Z