warning light MERCEDES-BENZ SLK ROADSTER 2012 Manual Online

warm tyres and only correct it if it is too low
for the current operating conditions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damage
R have a negative effect on handling charac-
teristics and thus the driving safety (e.g .by
causing aquaplaning)
i The tyre pressure values given for low
loads are minimum values which offe ryou
good ride comfor tcharacteristics.
However, you can also use the values given
for higher loads. These are permissible and
will not adversely affect the running of the
vehicle. H
Environmental note
Check the tyre pressure regularly, at least
every 14 days.
For speeds up to 210 km/h the values given
on the tyre pressure information label (fuel
filler flap) may be reduced by 30 kPa (0.3 bar,
4p si) without a reduction in safety.
This improves the ride comfort of your vehi-
cle; however, the fuel consumption may
increase slightly. Tyre pressure loss warning system
Important safety notes While the vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect
significant pressure loss in a tyre. If the speed
of rotation of a wheel changes as a result of
a loss of pressure, a corresponding warning
message will appearint he multifunction dis-
play.
The tyre pressure warning system does not
warn you of an incorrectly set tyre pressure.
Observe the notes on the recommended tyre
pressure (Y page 289). The tyre pressure loss warning system does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of
pressure on several tyres at the same time
cannot be detected by the tyre pressure loss
warning system.
The tyre pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tyre is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delayed if:
R
snow chains are fitted to your vehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
R you adopt a very sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration).
R you are driving with a heavy load (in the
vehicle or on the roof).
Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system
if you have:
R
changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
pressures on the inside of the fuel filler flap
to ensure that the tyre pressure in all four
tyres is set correctly for the respective
operating conditions.
The tyre pressure loss warning system can
only give reliable warnings if you have set
the correct tyre pressure. If an incorrect
tyre pressure is set, these incorrectv alues
will be monitored.
X Observe the notes in the section on tyre
pressures ( Ypage 289). Tyre pressure
291Wheels and tyres Z

Checking tyre pressure electronically
X
Make sure that the key is in posi-
tion 2(Ypage 127) in the ignition lock.
X Press the =or; buttononthe steer-
ing wheel to select the Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The current tyre pressure for each wheel
will be displayed in the multifunction dis-
play.
If the vehicle has been parked for longer than
20minutes, the Tyre pressures will be displayed after a few minutes of
driving message appears.
After a teach-in period, the tyre pressure
monitor automatically recognises new
wheels or new sensors. As long as a clear
allocation of the tyre pressure values to the
individual wheels is not possible, the Tyrepressure monitor active display mes-
sage is shown instead of the tyre pressure
display. The tyre pressures are already being
monitored.
i If a spare wheel/emergency spare wheel
is fitted, the system may continue to show
the tyre pressure of the wheel that has
been removed for a few minutes. If this
occurs, note that the value displayed for
the position where the spare wheel/emer-
gency spare wheel is fitted is not the same
as the spare wheel/emergency spare
wheel's current tyre pressure.
Warning messages of the tyre pressure
monitor If the tyre pressure monitor detects a signifi-
cant pressure loss on one or more tyres, a
warning message is shown in the multifunc-
tion display. Awarning tone also sounds and
the tyre pressure warning lamp lights up in
the instrument cluster. Each tyre that is affected by a significant loss
of pressure is highlighted in the pressure dis-
play.
If the
Please correct tyre pressure message appears in the multifunction dis-
play:
X
Chec kthe tyre pressure on all four wheels
and correct it if necessary.
i If the wheel positions on the vehicle are
interchanged, the tyre pressures may be
displayed for the wrong positions for a
short time. This is rectified after a few
minutes of driving, 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 lamps go out. The monitor uses
the currently set tyre pressures as the refer-
ence values for monitoring. In most cases, the
tyre pressure monitor will automatically
detect the new referencev
alues after you
have changed the tyre pressure.
i For an overview of th emenus, see
(Y page 182).
If you wish to define the new reference values
manually:
X Use the table on the inside of the fuel filler
flap to ensure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Also observe the notes in the section on
tyre pressures (Y page 289).
X Make sure that the key is in position 2in
the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The multifunction display shows the cur-
rent tyre pressure of the individual tyres or Tyre pressure
293Wheels and tyres Z

Tyres
Summer tyres Light-alloy wheels V1 V2 V3 V4
BA
205/5
5 R16 91 V 17 7.0
Jx16 H2 ET 37.5 #
— — —
BA
205/55 R16 91 V
17 7.0 J x 16 H2 ET 38 #
— — —
FA
RA
205/55 R16 91 W
17
225/50 R16 92 W 17, 18 7.0
Jx16 H2 ET 37.5
8.0 Jx16 H2 ET 33.5 # #
— —
FA
RA
205/55 R16 91 W
17
225/50 R16 92 W 17 7.0 J x 16 H2 ET 38
7.5
Jx16 H2 ET 45.5 — #
— —
FA
RA 225/45 R17 91 W
245/40
R17 91 W 18, 19 7.5 J x 17 H2 ET 42
8.5 J x 17 H2 ET 36 # # #
—
FA
RA
225/45 R17 91 W MOExtended
20
245/40 R17 91 W
MOExtended 18, 19, 20 7.5 J x 17 H2 ET 42
8.5 J x 17 H2 ET 36 # # #
—
FA
RA
225/40 R18 92 Y XL
21
245/35 R18 92 Y XL 18, 19, 21 7.5 J x 18 H2 ET 42
8.5 J x 18 H2 ET 36 # # #
—
FA
RA 235/40 ZR18 95
YXL
255/35 ZR18 94 Y XL 19, 21 8.0 J x 18 H2 ET 43
9.0 J x 18 H2 ET 42 — — — #
Winter tyres Light-allo
ywheels V1 V2 V3 V4
BA
205/55 R1 6 91 H M+S
i17 7.0
Jx16 H2 ET 37.5 # #
— —
BA
205/55 R1 6 91 H M+S
i17 7.0 J x 16 H2 ET 38 # #
— —
BA
225/45 R17 91 H M+S
i18 7.5 J x 17 H2 ET 42 # # #
—
BA 235/40 R18 95 V XL M+S
i 8.0 J x 18 H2 ET 43 — — — #
FA
RA 235/40 R18 95 V XL M+S
i
255/35 R18 94 V XL
M+Si 19, 21 8.0 J x 18 H2 ET 43
9.0 J x 18 H2 ET 42 — — — #
17
Not in conjunction with Sports package code 950/952.
18 SLK 200 BlueEFFICIENCY (V1), SLK 250 BlueEFFICIENCY (V1). SLK 250 CDI BlueEFFICIENCY (V2): additional
measures necessary (additional wheel-arch extensio nonrear axle wheel cutout).
19 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
20 MOExtended tyres (tyres featuring run-flat characteristics) only in combination with an activated tyre pres-
sure loss warning system.
21 Observe notes on "large wheels" in the "Wheel/tyre combinations" section. Wheel and tyre combinations
297Wheels and tyres Z