thanks Petef, yeah pretty strange, hopefully it's in the one-off bucketSorry - haven’t come across anything like that and I run ACC almost every time I get in the car with pilot assist on as well.
We dont run the car more than 20kms daily, and rarely use the M1 as we work from home, charge it every 4-5 days (30%-90%)
I hope it's a software glitch and not a 12v issue, as all the systems were on, lights, wipers, ACC/Pilot Assist, BSM etc