User's Manual

spare tire, the 3-digit 7-segment section will show nothing and the backlighting will turn off after one
minute.
1.3.5.3 Rapid loss of pressure
If one or more tires are reporting a pressure loss of 0.2 bar or more within 60 seconds, the system must
alert the driver of a fast leaking tire. A 3 Step Indication procedure will be used to highlight this
condition:
Step 1. The “Fast Leaking” and “Pressure Warning” icon will be shown and the icon of the
corresponding tire will blink for 90 seconds and beep at the same frequency (1 Hz) for 15 seconds. The
driver must be able turn off the beeping whenever he pushes the button.
Step 2. The “Fast Leaking” and “Pressure Warning” icon will be shown and the icon of the
corresponding tire will blink only with doubled frequency (2 Hz) for 90 seconds and beep at the same
frequency for 15 seconds. The driver must be able turn off the beeping whenever he pushes the button.
Step 3. The “Fast Leaking” and “Pressure Warning” icon will be shown and the icon of the
corresponding tire will blink at a doubled frequency again (4 Hz) and beep at the same frequency for
15 seconds. The driver must be able turn off the beeping whenever he pushes the button.
Step 3 will be repeated continuously until the condition is improved (a normal or warning condition has
been met).
During this whole period, the 3-digit 7-segment section will show the current pressure of this tire.
If more than one tire is affected, the system will cycle through the tires affected, showing each
under-inflated tire’s pressure for 2 seconds
continuously.
Rapid loss of pressure displayed:
(European version: red; US version: yellow)