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.

Hi Schnappi, thanks so much for taking the time to reply. Curious, I've just had a look and I do not have Relay 6 in my fusebox at all! I'm presuming that because it's starting normally that the starter motor relay is fine, also the clutch switch must be ok because it won't start at all without the clutch depressed. In the list inside the lid, R6 is blank.

2010 V50 T5. Had it 10 years, and suddenly the Autostart function isn't working. This is not the stop/start feature - I don't have that. This is the engine start feature on 5-cyl cars where you just flick the key to position III and do not have to hold it until the engine runs. Otherwise the car runs fine, no errors.

Does anyone know how it actually works? I'm presuming some sort of relay which controls it, but the relays list in my handbook is not giving me any clues.

It's a very minor annoyance but I'd like it to work again, because after 10 years I keep forgetting to hold the key!

Many thanks