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229Car care
Automatic tire pressure
monitoring
(option, certain variants only)
The pressure monitoring system consists of
a sensor in each wheel, a detector in three
wheel housings and a receiver. The sensors
are located inside the wheels directly adja-
cent to the air valves.
Tire pressure information is sent wirelessly
to the receiver.
The system checks the tire pressure when
the car is travelling over 18 mph (30 km/h).
The system is “self-learning”, which means
that the position of the wheels can be
changed without requiring adjustments to
the monitoring system. The spare wheel
does not have a sensor.
The sensor batteries have an average life of
10 years. The batteries cannot be changed
but require the sensor units to be replaced.
The system does not warn if a tire is overin-
flated.
If the tire pressure drops
If the tire pressure drops 0.3 bar (4 psi)
below the recommended pressure, the SID
will issue a warning as to which tire is
affected.
Adjust the tire pressure as soon as possible.
WARNING
The system is intended to aid the driver.
The driver is always ultimately responsi-
ble for ensuring that the tire pressure is
correct.
NOTICE
Great care must be taken when changing
tires so as not to damage the sensors that
are integrated in the valves.
Tire pressure low,
front left.
Check tires.
Valve with sensor