Hi and thanks again for the reply. Battery is relatively new and performing fine. I have a read-only copy of Vida on a virtual machine for part numbers and procedures, but using a cheap Bluetooth OBD I found a couple of fault codes, one of which was Clutch Position Sensor. Cleared faults and it is working again. For how long remains to be seen, but I will keep an eye on it. We have had a long period of wet weather, and my screen needs a re-seal so it's entirely possible some water has got in and caused trouble. Another task for the to-do list.