05 Pacifica 3.5 AWD Touring - Stall, horn goes off
 

Hi all.

This just started last night and I can't figure it out.

Car has been running well, suddenly I'm finding it starts ok, I go to put it in reverse and it stalls, the dash lights all light up, then go dark, and then the horn goes 4 times.
No check engine, no digital message on the display.
Everything works fine in drive or neutral.

Any ideas?

Thanks.

Mark.