wetxp97

I have a 97 xp and almost sunk it. The front driveshaft popped out and water started coming in through the rear driveshaft seal, I barely got it to the shore by swimming it. It had about 10 inches of water in it and now when I put the tether and cap it will not beep. I've tried the the advance diagnostics and it beeps 2 times quikly, which means the mpem does not recognize the key. I've tested the post and the cap is still magnetic. I changed the 15 amp fuse for the battery but that was the only one bad. Is my mpem shot or can it be something else