Mine is sitting on 2362 days overdue, but to be fair I haven't had it cleared since I did the last service back in August, so there were already a few days on it.
This is just another example of how badly developed the Grenadier software is, there are numerous glitches and latent messages that crop-up out of the blue. I now have three service messages, the usual days and milage overdue, but also a 'Service in 65H', which is completely wrong, but another one of those latent bugs that has been left in the software as a result of some of the worst programming I have seen since Uni (a long time ago

now). Korg said it best ''moron software developer at whatever software company that Ineos uses'', there would also be the software developer/engineer employed by Ineos in that mix, or maybe there wasn't/isn't one, which would be part of the problem !