standstill. Do not carry out any sudden steer-
ing maneuvers.
The tire pressure monitor has a yellow h
warning lamp in the instrument cluster for
indicating pressure loss/malfunctions (USA)
or pressure loss (Canada). Depending on how
the warning lamp flashes or lights up, an
underinflated tire or a malfunction in the tire
pressure monitor is displayed:
R
if the h warning lamp is lit continuously,
the tire pressure on one or more tires is
significantly too low. The tire pressure mon-
itor is not malfunctioning.
R
USA only: if the h warning lamp flashes
for 60 seconds and then remains lit con-
stantly, the tire pressure monitor is mal-
functioning.
Only vehicles with steering wheel buttons: the
on-board computer displays information on
tire pressure. After a few minutes of driving,
the current tire pressure of each tire is shown
in the on-board computer.
USA only: if the tire pressure monitor is mal-
functioning, it may be more than 10 minutes
before the malfunction is shown. The h
tire pressure warning lamp flashes for
60 seconds and then remains lit. When the
malfunction has been rectified, the h tire
pressure warning lamp goes out after a few
minutes of driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at a gas station with a pressure gage.
The tire pressures shown by the on-board
computer refer to those measured at sea
level. At high altitudes, the tire pressure val-
ues indicated by a pressure gage are higher
than those shown by the on-board computer.
In this case, do not reduce the tire pressures.
If radio transmitting equipment (e.g. wireless
headphones, two-way radios) is operated
inside the vehicle or in the vicinity of the vehi-
cle, this can interfere with the operation of the
tire pressure monitor.
Checking the tire pressure electroni-
cally (vehicles with steering wheel but-
tons)
Tire pressure display
Using the steering wheel buttons
X
Turn the key to position 2 in the ignition
lock.
X
Press the V or U button repeatedly
until the standard display is shown
(Y page 187).
X
Press the 9 or : button repeatedly
until the current pressure of the individual
tires is shown in the display.
If the vehicle is parked for longer than
20 minutes or you then drive at less than
18 mph (30 km/h), the Tire pres. dis‐Tire pres. dis‐
played after driving for severalplayed after driving for several
minutesminutes message appears.
i
The tire pressure value shown in the dis-
play may differ from those measured at a
gas station using a pressure gage. The on-
board computer will generally give you a
more exact value.
Tire pressure loss warning system
Vehicles with steering wheel buttons
If the tire pressure monitor detects a signifi-
cant pressure loss on one or more tires, the
on-board computer displays a warning mes-
sage. The h tire pressure loss warning
lamp in the instrument cluster (Y page 226)
lights up.
The tire pressure is shown in 2 red rectangles.
The pressure of the tire concerned is shown in
one of the two rectangles (Y page 197). Addi-
tionally, a warning tone sounds.
292
Tire pressure
Wheels and tires
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