I had same problem few weeks ago. -20 to 25 c temps. Got the discharge msg.called delare, told me it had to do with temp.warmed up to -2 and msg went away.
Last week has been -25 to 35 for 4 days. Same msg. I drive 75 km to work daily. Msg still stays on.
Temp now is - 10 msg still there.
Thinking of taking it into delar. Anyone else haing same issues ?