WABCO OptiTire - No Signal Received from the Sensor

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Workshop notes
11.2.6 No signal received from the sensor
Battery life
An internal lithium battery supplies the sensor with power.
For reasons relating to mechanical stress and tightness, the battery is coated within the sensor and
cannot be exchanged.
The battery life-time depends on certain factors. Under normal operating conditions the life of the
battery will be up to 9 years.
Since signicant pressure deviation increases transmission frequency for short-term warning, frequent
pressure changes cause a shorter life time.
The replacement required due to a weak battery will be indicated around half a year before the
end of its life. A corresponding entry in the diagnostic memory will be seen.
Checklist for sensor
– If the warning "no reception wheel module" is repeated often in the WABCO Display, you can use
the checklist to determine if the sensor should be replaced.
– Copy in this table line per line the default value to the "Result" column if the description matches.
– Total the standard values in the "Result" column.
You will nd more information on your items in the section "Test result" 76.
Ensure while troubleshooting that the vehicle is not in vicinity of high-frequency radiation
(Chapter "6.1.1 The external sensor (WM2)", page 22).
Checklist
NO. DESIGNATION DEFAULT RESULT
1a Warning "No reception" is not active but stored in diagnostic
memory (fault shown blue in diagnosis).
0
1b Warning "No reception" is active (fault shown in red in diagnosis). 2
2a Warning "No reception" appears for one sensor. 0
2b Warning "No reception" appears for several sensors. 3
3a The age of the sensor (according to the engraved production date
in format WW/YY) is less than 5 years.
0
3b The age of the sensor lies between 5 and 7 years. 4
3c The age of the sensor is more than 7 years. 8
4a The average outside temperature was around -20 °C while
occurrence of the failure
0
4b The average outside temperature was around 0 °C while
occurrence of the failure
3
4c The average outside temperature was around +20 °C while
occurrence of the failure
5
5a Activation of the external sensor WM2 with bar magnet or the
internal sensor WIS or SMS with the WABCO TPMS Manager
(WIS) is successful.
0