Sorry man, I do not have the bike with me, because she is now not healthy. Otherwise I could make a pic to illustrate you the sensors I mean.
Take off the seat; you are now looking at the sub frame of your bike. On the right side, the break side of your bike, you will see a couple of little black boxes, 5 or 6.
I think they are now Bosch, is you will change one of these, try to buy some Siemens.
I think is the first one in the line of queue.
Good luck!