I took the bike in yesterday and they paired the new sensor to the bike right away. The service manager was onto it immediately. He spoke to the guy who installed it and found he hadn't fitted a new sensor before, only replaced the same sensor in the original wheel if their bead breaker dislodges it when fitting a new tyre. He didn't realise that a new sensor needed to be paired.
The problem I was getting with the sensor was that it was often dropping contact with the bike and the warning light popping up. I'd click through the readout to see the front wheel with a psi number but dashes for the rear. Then, anything from ten minutes to an hour later, it would connect again and give me a psi for the rear wheel but the warning light would stay on until I turned the bike off. This would happen several times a day. I took photos of the readout with good pressure for both wheels and the light on and showed them to the service manager. He'd never seen that happen before. Between the photos and the letter I'd written describing the problem, he was very supportive of a warranty replacement. .
From Woodrising (no, nobody else has heard of it either) Rides a Springfield Dark Horse