R
Check the tyre for foreign objects.
R
Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop.
H
Environmental note
Check the tyre pressure regularly, at least
every 14 days.
The recommended tyre pressures for various
operating conditions can be found on the tyre
pressure table on the fuel filler flap
(
Y
page 109).
Operation with a trailer: the applicable value
for the rear axle is the maximum value stated in
the tyre pressure table.
The tyre pressure table may also state tyre pres-
sures for different load conditions. These are
defined in the table as different numbers of pas-
sengers and amounts of luggage. The actual
number of seats may differ from this.
If tyre sizes are not specified, the tyre pressures
stated on the tyre pressure information label
apply for all tyres approved for this vehicle.
If one or more tyre sizes precedes a tyre pres-
sure, the following tyre pressure information is
valid only for that tyre size.
Use a suitable pressure gauge to check the tyre
pressure. The outer appearance of a tyre does
not give any reliable indication of the tyre pres-
sure.
You can also check the tyre pressure using the
on-board computer.
If possible, correct tyre pressures only when the
tyres are cold.
The tyres are cold:
R
if the vehicle has been parked with the tyres
out of direct sunlight for at least three hours
and
R
if the vehicle has not been driven further than
1.6 km
Depending on the outside temperature, the
vehicle speed and the load on the tyres, the tyre
temperature and thus the tyre pressure changes
by approximately 10 kPa (0.1 bar/1.5 psi) per
10 †. Take this into account when checking the
pressure of warm tyres. Correct the tyre pres-
sure only if it is too low for the current operating
condition.
Driving with a 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 character-
istics and thus driving safety (e.g. aquaplan-
ing)
The tyre pressure values given for low loads are
minimum values that offer you good driving
comfort characteristics.
However, you can also use the values given for
higher loads. These are permissible and will not
adversely affect the running of the vehicle.
Tyre pressure monitor
General notes
If a tyre pressure monitor is fitted, the vehicle's
wheels have sensors fitted that monitor the tyre
pressures in all four tyres. The tyre pressure
monitor warns you if the pressure drops in one
or more of the tyres. The tyre pressure monitor
functions only if the corresponding sensors are
fitted to all wheels.
Information on tyre pressures is shown on the
multifunction display. After a few minutes of
driving, the current tyre pressure of each wheel
is shown in the
Serv.
Serv.
menu.
Tyre pressure
239
Whee
ls
and
tyre
s
Z
