254 Car careThe system does not warn if the tire pres-
sure is too high.
If the system has warned or triggered an
alarm due to inadequate pressure then
the pressure must be reset to the recom-
mended pressure so that the warning/alarm
is cleared.If the tire pressure decreasesIf the tire pressure decreases to 6 psi
(40 kPa) below the recommended pressure
then a warning is shown on the SID as to
which tires are affected.
Adjust the pressure as soon as possible. If the tire pressure continues to decrease
then an alarm is shown on the SID when the
pressure has decreased to 23 psi (160 kPa)
which is the lowest permitted pressure for
the tire.
An alarm is also received when leakage is
greater than 3 psi/min. (20 kPa/min.).
Reduce speed (avoid heavy braking and
significant steering wheel movement) and
stop the car as soon as possible at a suita-
ble location. Replace the defective wheel.
The fault message can remain for up to
10 minutes after restarting the car. Then it
disappears if the tire pressure is correct.Check/adjust the pressure in the other tires
when a fault message is shown.
Note that the tire pressure can decrease
without a puncture. The pressure could
decrease around 3 psi (20 kPa) during a
three month period.
The outside temperature could also affect
tire pressure.
The temperature in the
tire also affects the
tire pressure. The spec ified tyre pressures
are valid for cold tyres. The increased tyre
pressure resulting from extensive driving
must not be reduced. For further informa-
tion on tire air pressure , see page 240.
Allow 10 minutes for the system to recog-
nize the wheel/sensors positions after fitting
a new set of tires. During this period no low
pressure warning or alarm can be triggered.
Tire pressure low,
front right. Check tires.
Low tire pressure rear
left. Make a safe stop.
Valve with sensor
Valve without sensor
93_US_7carcare_MY09.fm Page 254 Tuesday, April 15, 2008 11:26 AM
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