Q5 What pressure change actually sets the Q5 gauge off?

[Leebroath]

W were travelling up to Aberdeen today and the alert came on the dashboard ‘Tyre Under-inflated’

I’m wondering what amount of pressure release actually sets this off or can this accidentally appear by just driving along the road

I’ve reset the gauge and the alert has not displayed again since it went of so it may just be a once off, but wondered has anyone had the same experience? Can it really easily be set off

 

[RS3 S.]

............I had the same on my RS3 when I had it. Checked the pressure when I could & it was fine, think it happened around twice in the 2 years of having the car & if correct was this time of year?. Maybe due to the drop in pressure/colder weather?, if it's all correct I wouldn't worry.

 

[Leebroath]

I suppose yes with the cold weather, will keep an eye out