Vauxhall Ampera Owner's Manual page 165

164 Vehicle care
Adaptive threshold function
The tyre pressure monitoring system
automatically detects if the vehicle is
driven with a tyre pressure
appropriate for a load of up to
3 people or for a full load.
If the tyre pressure is to be reduced,
switch off ignition before reducing.
Sensor matching process - Auto
learn function
Each tyre pressure monitoring
system sensor has a unique
identification code. The identification
code needs to be matched to a new
tyre/wheel position after rotating the
vehicle's tyres or replacing one or
more of the sensors.
After a tyre with sensors is installed or
after rotating the vehicle tyres, the
vehicle must remain stationary for
approx. 20 minutes, before the
system recalculates. The following
relearn process takes up to
10 minutes of driving at a minimum
speed of 12 mph. During the
recalculation process $ or pressure
values changing tyre/wheel position
may be displayed in the DIC.
If problems occur during the relearn
process a warning message will be
displayed in the DIC.
Fault
The tyre pressure monitoring system
will not work properly if one or more of
the sensors are missing or
inoperable.
When the system detects a
malfunction, A flashes for approx.
1 minute and then stays on for the
remainder of the vehicle on/off cycle.
A DIC warning message is displayed.
A and the DIC warning message
come on at each vehicle on/off cycle
until the problem is corrected. Some
of the conditions that may cause
these messages to come on are:
■ The tyre pressure monitoring
system sensor matching process
was started but not completed or
not completed successfully after
rotating the tyres. The DIC
message and A should go off once
the tyre pressure monitoring
system sensor matching process
has been performed successfully.
■ One or more tyre pressure
monitoring system sensors are
missing or damaged. The DIC
message and A should go off when
the sensors have been installed
and the sensor matching process
has been performed successfully.
Seek the assistance of a workshop.
■ Replacement tyres or wheels do
not match the original equipment
tyres or wheels. Tyres and wheels
other than those recommended
could prevent the tyre pressure
monitoring system from functioning
properly.
■ Operating electronic devices or
being near facilities using radio
wave frequencies similar to the tyre
pressure monitoring system could
cause the tyre pressure monitoring
system sensors to malfunction.
If the tyre pressure monitoring system
is not working properly, it cannot
detect or signal a low tyre condition.
Seek the assistance of a workshop.