**SOLVED**
Help!
I ran thru some water (at 50 mph)and not a minute later I got trans failsafe
And engine fail safe.
It died and I had to pull off the road, she wouldn’t restart and my obd 2 reader wouldn’t connect.
I’m gonna leave it over night and try again tomorrow.
What all is your first thought?
What should I bring with me to diagnose? (if it doesn’t just fire up)
I’m just sick. It’s been such a good car.
2005 e53 4.4 sport 150.xxx

SOLVED
When I hit what seems to be about 10 inches of water at 50 mph
It forced enough water in the ECU box to trigger the Engine failsafe prog.
I drained water from the main computer VDO box seemed to sealed.
THE FIX
Unplug everything remove the ecu, open it “small star screws” and airhose it
Use a (electronics cleaner spray to remove any corrosion due to water exposure)
spray silicone oil in to the box and Re-air hose it to distribute the spray.
NEXT
Return to the engine bay and air hose all the harness
(They hold a suprising amount of water)
Spray the connectors lightly with said silicone to repel water in the future.
That’s it!