If the doors didn't work then the trunk didn't lock either. Read through this thread (link below) to get yourself educated about what to look for and what you need to do . . .

It is likely that your central locking pump and security module are flooded. Read through this thread for information . . . (start at post #22 for photos).

Headlight headache...do you have water in you trunk?

Water can leak into the well in the lower right side rear area of the trunk. Once water gets in there it cannot drain out and ends up flooding the electronics mounted down there. Usually the water leak is from the "wing" mount plate. You'll see that information in the thread too.

There are MANY threads on the forum about this issue . . . here's another good one . . .

Central locking not functional