I have a 2013 90. Gets very little use apart from between September and February. Recently tried to start it but no joy, not a sound. I jumped it and all good. As I drove it a short distance the red alarm light remained on so decided to return to base. The fob would not work so locked with the key. Tried second new fob, no joy. Next day tried again this time it turned, part fired then stopped. Tried several times eventually it started. Drove if for 20miles all good. Next day it would fire then stop. I tried jumping again but same issue. Turns but will not keep engine running.
total novice and know zilch about motor vehicles any ideas apart from roadside rescue?
Nedh