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Wheels and tyres
CAUTION
Follow the instructions given on the tempora-
ry s
pare wheel label.
Note
The tyre pressure of the spare wheel must al-
way
s correspond to the highest pressure pre-
scribed for the model of vehicle in question.
Tyre monitoring systems
Tyr
e pressure*
The tyre pressure monitoring system uses
ABS
sen
sor
s to compare the revolutions and
the circumference of each wheel. Should the
circumference of any wheel change, the
warning lamp on the general instrument
panel will light up and an audible warning
will be heard.
Tyre circumference may change if:
●
Tyre pressure is too low
●
Tyre structure is damaged
●
Vehicle load not evenly distributed
●
wheels on one axle are subjected to greater
load, (e.g. driving with trailer, uphill, down-
hill);
●
Snow chains are fitted
●
The temporary spare wheel is fitted
●
One wheel on the axle has been changed
Basic system settings
Should the tyre pressure change or if one or
more wheels are changed or the position of
the wheel on the vehicle is changed, e.g.
changing round the front and rear wheels, or
where a warning lamp lights up when driv-
ing, the system must be adjusted as follows:
●
Inflate all tyres to the prescribed pressures
››› page 218.
●
Switch the ignition on.
●
Store the new tyre pressure in the Easy
Connect system with the
button and the
S
ET
TINGS
function button ›
›
›
page 21.
●
In vehicles without radio: press and hold
down the button with the ignition on,
until an acoustic signal is heard.
The warning lamp lights up
If the pressure on at least one tyre is signifi-
cantly lower than the pressure set by the driv-
er, the warning lamp will light up ›››
.
The w
arnin
g l
amp flashes
If the warning lamp flashes, there is a fault in
the system. Contact a specialised service to
have it fixed.
WARNING
●
If the warnin
g lamp lights up, slow down
immediately and avoid any severe braking or
steering manoeuvres. Stop and check the
tyres and their pressure as soon as possible.
●
Under certain conditions (e.g. sporty driv-
ing style, driving on loose surfaces or in win-
ter) the warning lamp may take a while to
light up or may remain switched off.
●
Despite the tyre pressure monitoring sys-
tem, the driver remains responsible for main-
taining the correct tyre pressure. You must
therefore check the tyre pressure often.
Note
●
The tyre pr
essure monitoring system is not
a replacement for regularly checking the tyre
pressure, as it is unable to recognise an even
drop in pressure.
●
The tyre pressure monitoring system is un-
able to warn of a sudden drop in tyre pres-
sure, e.g. a puncture. In this case, try to stop
the vehicle carefully with no severe braking
or steering manoeuvres.
●
To ensure the tyre pressure monitoring sys-
tem works correctly, the basic setting must
be performed every 10 000 km (6000 miles)
or once a year.
●
If the battery is disconnected the warning
lamp lights up when the ignition is switch-
ed on. This warning lamp must switch off af-
ter covering a short distance.
221
Technical dataAdviceOperationEmergenciesSafety
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