WABCO OptiTire System Description page 70

Operation
System failure
A system failure has occurred if display shows crossed-out "IVTM". OptiTire does not signal warning
messages for any wheel. The driver must check the tire pressures manually on the wheel.
System error
Repair note
– Check the supply voltage of the ground line.
– Check the cable connections.
– Carry out a system diagnostics.
Battery warning
If the wheel sensor battery's end of life has been reached after around 9 years, a battery warning is set
around half a year beforehand. This is indicated in the display by a flashing sensor and a corresponding
battery symbol. No warning lamp is indicated.
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