Hello from Spain , As owner of a Tiguan Bj. 11/11 , I may ask you the following question in the hope of finding a (a) gifted (r) “Bloger” (in) who can explain it well. The car calculates in each wheel with compressed air sensor transmitter, and indeed on each air valve . This sensor “funks” up to the display in the cockpit but ….. my question is: Where is the radio receiver ? On the tire ?, On each axle ? Is it a piece or part which one can also expand , replace how the transmitter at the valve ? Could I get somewhere a picture, drawing, sketch of this part and its place in the car ? Thanks in advance , Spain