Hi all, I had the same issue around 6 months ago. Bike was throwing MTC error and as everyone else did, I changed the battery as mine was getting worn. Bike started, rode around 200m and it died as I downshifted, wouldn’t start and had to push her back. Tried again later and it wouldn’t start and still kept throwing MTC error. Took it to my dealer, explained the issues and what I had done to date. They took her in, ran diagnostics and came back with a dead crank position sensor. Roughly $500 dollars later and one week waiting for parts and she’s a good as new. No issues, runs a treat and no errors yet. My girl is 2018 with full AR RS22 system with a custom tune on a PCV. Screams like a banshee