Can A Dualshock4 survive Falling in a toilet

Hi,

You can only hope but most probably there will be some damage.

As you know water and electronics and electricity are not a good mix.

The water causes corrosion, which starts immediately and it also provides circuit paths for the electricity which were not in the controller’s operating design and could damage the components.

Rice does not fix the problems caused by corrosion

Rice is for dinner not repair

First do not turn on your controller and then you need to remove the battery as soon as possible from the controller to minimize any further damage.

Then you need to dis-assemble the rest of the controller and clean all the affected parts using Isopropyl Alcohol 99%+ (available from electronics parts stores)to remove all traces of corrosion and water. Do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain scents and is not as effective. If you do check the label to verify the amount

Here is a link that describes the process.

Electronics Water Damage

As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board.

Hopefully after you have done all this the controller might possibly work correctly again.

Here is a link to the ifixit guide(s) for repairing your controller

DualShock 4 CUH-ZCT2

If this process seems too daunting, take your controller to a reputable, professional electronics repair service and ask for a quote for a repair. If you decide to do this, do it sooner than later.