Volkswagen The Golf 2004 Service Training page 41

Calibration
Since the tyre characteristics can change,
a calibration procedure must be performed each
time the tyre pressure is altered, or when a wheel
is changed, to allow new reference data to be
calculated.
Calibration procedure
To start the calibration procedure, the tyre
pressure monitor display button must be pressed
for 2 seconds. The warning lamp in the
speedometer will light up while the button is
pressed and will go out after 2 seconds.
In addition, a confirmation signal will sound.
As the vehicle is driven normally, the system will
calibrate itself to the set tyre pressures and type
of tyres. Tyre pressure monitoring will gradually
take over as the calibration procedure nears the
end. It takes just a few minutes before basic
monitoring can start, based on the figures
analysed by the system.
System fault
In the event of a fault in the ABS with EDL control
unit, tyre pressure monitoring will be stopped
and the tyre pressure monitor warning lamp will
light up in the speedometer.
Diagnosis
Diagnosis is carried out using the diagnosis tester
VAS 5051/5052 via the guided fault finding
function in the ABS with EDL control unit J104.
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