Check the gasket around the water squirter above the rear window. My attachment dried up and cracked. Didn't notice it until the washing unit had fallen inside of the tailgate.
I installed a Takagi Tankless water heater 3 months ago. It works great. It was probably twice as much as a traditional water heater, but I was able to mount it outside. Getting the square footage in my house was an easy trade for the extra cost of the tankless water heater. Some are only...