Engine: D5244: weird crank no start

[airways]

2003 V70 D5 163 215k miles

Yesterday after a 30 min drive coming in to park I got a random light on that passenger rear door was open. Didn't think much of it, parked up turned car off and opened then closed the door (no problem)

Came back to her about 30 mins later, key in, ignition on and nothing lights up. car would crank but no start. Key out, back in and only the radio lit up but yet again crank no start.

I disconnected the battery for 20 mins and back up she fired although now with an SRS service required message.

Anyone any idea what this might have been, it's the second time it has happened in the past 6 months and I don't want it to happen somewhere inconvenient? I haven't had any previous electrical problems with the car.

[Simmy]

you need to get the car scanned with vida these events will have left a marker which will point you to where the fault lies. whats the battery condition like?

[airways]

Battery is in good condition, replaced within the last 10 months. I'll plug it into VIDA tomorrow and post the results. Car has started fine multiple times today, hopefully VIDA points me in the right direction

[airways]

Got her plugged into VIDA yesterday here are the codes

ECM-E003 Configuration fault - Faulty configuration
AUM-E003 Configuration faut Faulty configuration
BCM-E003 Configuration fault Faulty configuration
DIM-E003 Configuration faut Faulty configuration
PSM-E003 Configuration fault Faulty configuration
SAS-E003 Configuration faut Faulty configuration
SRS-E003 Configuration fault Faulty configuration

Could this be main relay? If so does anyone know how I can test it wont happen again after replacing?

[airways]

Should also mention all codes cleared fine and havent reappeared, thats not to say it wont randomly happen again