My 2010 C70 leaks the water out of the windshield washer tank, a message indicating the tank is empty comes up on the dash. Checking the hoses to/from the tank I cannot see a loose hose.
Has anyone else had this problem?

 

It may be cracked, but check where the motors and sensors are and see if the bushings may be leaking. Does it have headlight washers? it may have another pump.

You would have to remove the bumper to access.