User's Manual

1.3.3 Normal operation
After startup of the system, the display must indicate the status of each tire, including its pressure and
temperature in once cycle. For each tire and each condition, the information must be displayed at least
one second. After this cycle, the system should switch to ordinary operating mode, thus switching the
display to blank, unless there are any errors or malfunctions. The normal operation mode must be
reached at least 15 seconds after switching the ignition to the “On” / “Run” position in combination
with 2.3.1 (standby mode). Otherwise normal operation mode must be reached at least 60 seconds after
switching the ignition to the “On” / “Run” position.
1.3.4 Loss of Signal
If one or more sensors’ signals have not been received during 10 minutes, while at least one signal has
been received, the system must alert and warn the driver by beeping once for 1s and illuminating the
transmission status indicator. Further more, the respective tire symbols must be blink for 60s and
illuminated permanently after that time, until all signals have been received. The beep must be repeated
each minute until the condition is improved or the driver pressed the button “CHECK”. The 3-digits
7-segment display will show nothing.
Loss of signal displayed:
(European and US version)
1.3.5 TPMS detection requirements
1.3.5.1 Pressure alert stage one
If one or more tires’ pressure drops 25% or more below the preset reference pressure or below the tire
specific pressure (Table 1), whichever is higher, a pressure alert must be triggered. To realise the
requirements of Table 1 the customer can change the alert threshold between 10% and 40% below the
reference pressure.
The “Pressure Warning” icon will be shown and the icon of the corresponding tire will blink for one
minute and beep in the same frequency for 15 seconds. The driver must be able turn off the beeping