Turn the knurled ring to 
.
The warning light 
on the instrument
cluster will come on.
See also:
Flowing/Rising Water
WARNING!
Do not drive on or across a road or path where water is flowing and/or rising
(as in storm run-off). Flowing water can wear away the road or path’s surface and
cause your vehicle to sin ...
Suspensions
...
TIREFIT Kit Components And Operation
1. Sealant Bottle
2. Deflation Button
3. Pressure Gauge
4. Power Button
5. Mode Select Knob
6. Sealant Hose (Clear)
7. Air Pump Hose (Black)
8. Power Plug
Using The Mode Select Knob And Hose ...