crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934241:0crwdne2934241:0 BWest

crwdns2934249:0crwdne2934249:0:

Open it up and remove the battery, making sure everything is dry as a bone. [http://www.ifixit.com/Device/DualShock_3#deviceGuides|Dualshock Repair guides]

While in there check for corrosion/rust if any is present, depending on how extensive it is, try removing it if you can using a light touch.

All of this assumes that the controller was not powered on while submerged, if it was you may be out a controller as the motherboard may already be fried.  If you're lucky it may only be the battery thats dead.

crwdns2915684:0crwdne2915684:0:

open