So having just got my V4S back from having the fork seal replaced I decided to nip out for a ride today. After a coffee stop the bike was as dead as a dodo, initially no key error, then nothing, then got to the enter code but as soon as I did the bike died. AA man jumped it for me, the battery was showing under 10V. It was then charging at 14V but died when he initially removed the battery pack. Restarted and left it running and it seems ok. Popped into the dealer and they have put me one on charge to collect tomorrow. The access looks rather tight so before I attempt replace it myself Do you have to lift the tank cover to remove it?
They’re easy to change. FYI, for you and other owners, if the battery voltage drops to 10 or below, the dash and all the control units switch off. The dash can then gothrough a complete reboot when you next try. If the battery has got that low, when using a jump pack to start, as you experienced, the jump pack needs to remain connected for some time until the charging system has built up the charge in the battery again, otherwise, as you experienced, the bike will just die when the jump pack is removed. I know not if it’s sensible leaving the jump pack attached while there’s 14.2V going into the battery from the charging circuit, something tells me no, but there’s no option really.
Same thing happened to me in July. Started with the bike not starting as quickly as normal, after a stop, but thought it was down to high temperatures in Southern Italy. Only a 12 month warranty on OEM battery. New one has 2 year.
