Yes another post re becm,have a 1997 P38 4L and the followingt is the problem.
Drove the car a short distance without any problem,came back about 15 minutes alter and got the engine immobilised press key,did this and nothing happened,tried to enter the eka which is correct and the whone thing locked up.
Put my hawkeye on to see what it said and the bcem failed to show up,there is power at the diag plug.
Anyone got a bright idea as to what has happened.

Have you checked every fuse, under seat and bonnet. Are there any loose connectors any where?

Do the doors lock/unlock? What about the headlights, do they work? All of them!?