I only have 3K miles on my 2015 F3. Last summer my Spyder started fine, I drove about 2 miles and noticed my gear number read E and I had several warning lights on the dash. Went to turn around to go home, engine died. Waited a few minutes and it started again with no errors. Called dealer, they said battery was low. Changed battery and all OK. At that point I bought a battery tender which was on all winter. I have ridden a few times this spring and now the same thing is happening. Gear reads E, numerous errors coming across dash...transmission problem, electronic error, DSS...engine choked out when it tried to shift down to stop. I got home finally and checked for fault codes, it said no active fault codes. Bought new battery (where I bought battery they said old one was still good) and seems fine. I thought the battery tender would keep it in good shape. I'm leary going very far from home with this coming out of no where. Any thoughts?