My DS4 PHEV (23plate) keeps displaying a message on the media screen at the start of every journey. The message always reads “take advantage of hybrid - x journeys and days since last charge” this is displaying despite me regularly charging the vehicle and the battery displaying as full.
I think I was getting that message at the same time I had “electric mode unavailable” messages even though traction battery fully charged (2022 DS4 PHEV). That warning message cleared after a few weeks without me doing anything other than drive in petrol/ICE mode, and I’ve never seen it since.
I haven’t seen that message when Electric only mode has been working. My driving is mostly short journeys in Electric mode, but a few longer ones but where car usually is fully charged and so starts up in Electric mode until traction battery runs out.