The dealer told me about the flat tyre indicator. He said a lot of people seem to think it's a fancy pressure reader but it's not (no surprise for £35 really!).
You pump up the tyres to the required pressure and then press the button on the dash.
What it then does is that it knows all the tyres have the same rolling radius and time. If you get a flat the radius and timing will go out of whack compared to the other wheels and it will light up.
Only worth doing if you can do yourself, i've done a couple in A3's about £9 for the switch and then just a bit of a fiddle hooking up some wires, and tweakign with vagcom, not hard though.
Not got copies of the scirocco wiring diagrams yet to investigate what wiring is pre run, but it should be standard VW stuff.
All the factory options are relatively easy retrofits, i'll certainly be retrofitting the sat nav, cruise, tpms, etc save heaps of cash.
I see a hell of a lot of people driving along with flat or nearly flat tyres. I guess it can also give you a warning that a tyre is on its way. I'm not sure what the percentage change in circumference is before it's set off.
Its not just to tell you have a flat - that is obvious both by feel and view - it also warns you of a slow puncture ........
I have it on my Octavia - the light went on once - I stopped the car and found a nail in the tyre - Quick trip to nearest tyre place, tyre repaired and the journey continued. I was on a long journey and using motorway/dual carriageway type roads and clearly going quite fast - had I had no knowledge of a tyre problem and left it untouched I could have had a blowout and an accident (which happened to my dad a few years ago which very nearly killed my mum - tyre blowout - left road hit a tree at only 45 mph - she broke all her ribs, had her spleen removed and spent 4 weeks in intensive care! - might have been averted if they had one of these).
Therefore the tyre indicator for 35 quid is a bargain IMO.
Ive had my light go on, on my GTI, went to quick fit, they found a lagging pin! tyre was just about to rip wide open, would not like to have been doing motorway speeds if that had gone!
