Same problem has just started on my 2009 Alphard this morning. Battery was dead as I had been away for several weeks and light just appeared after starting with battery pack. Took it for a short drive and same issue as others in that Hybrid doesnt kick in and stays on petrol. In addition to red car with exclamation mark there's also another red car constantly flashing on the left of the display which I haven't seen before.
One forum suggested a way to get rid of the red car/exclamation light was to clean the battery cooling fan from underneath the passengers seat. Anyone tried this?
Also anyone know a mechanic that will deal with Alphard Hybrids in the Gloucestershire area?