Hi Jeroense,Hi Daniel,
I have te same issue with my car, V40, D2 - 2013.
They have replaced the alternator. With that, I drove without disruption for about 2 weeks. Unfortunately, the same problem occurs again.
Have you found a solution by now?
Unfortunately no solution yet, the problem is so intermittent I am hesitant to get it fixed as a matter of urgency unless it impacts the braking system, handling etc of the car. My thoughts had been pointing towards the alternator so interesting to hear that this has not solved the issue for you.
I had been told about checking earthing points (I have checked these and can see no visible issue there in terms of their connection), I also took the CEM out and cleaned it and the connectors using contact spray, but again this has not solved the issue for me.
Having heard that the alternator change did not cure the issue for you, I guess the next point of checking would be the condition of the battery if there are any dead cells etc in it.